CA2624404A1 - Externally-applied patient interface system and method - Google Patents
Externally-applied patient interface system and method Download PDFInfo
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- CA2624404A1 CA2624404A1 CA002624404A CA2624404A CA2624404A1 CA 2624404 A1 CA2624404 A1 CA 2624404A1 CA 002624404 A CA002624404 A CA 002624404A CA 2624404 A CA2624404 A CA 2624404A CA 2624404 A1 CA2624404 A1 CA 2624404A1
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- transfer component
- fluid transfer
- fluid
- wound
- incision
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive plasters or dressings
- A61F13/0203—Adhesive plasters or dressings having a fluid handling member
- A61F13/022—Adhesive plasters or dressings having a fluid handling member having more than one layer with different fluid handling characteristics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive plasters or dressings
- A61F13/0203—Adhesive plasters or dressings having a fluid handling member
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- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
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- A61M1/732—Visual indicating means for vacuum pressure
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- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
- A61M1/734—Visual indicating means for flow
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- A61M1/71—Suction drainage systems
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/915—Constructional details of the pressure distribution manifold
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- A—HUMAN NECESSITIES
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- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/91—Suction aspects of the dressing
- A61M1/916—Suction aspects of the dressing specially adapted for deep wounds
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- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/95—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing with sensors for exudate composition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
- A61M1/96—Suction control thereof
- A61M1/964—Suction control thereof having venting means on or near the dressing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
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- A61M2205/00—General characteristics of the apparatus
- A61M2205/50—General characteristics of the apparatus with microprocessors or computers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M2230/00—Measuring parameters of the user
Abstract
A tissue closure treatment system and method are provided with an external patient interface. A first fluid transfer component FTCl comprises a strip of porous material, such as rayon, with liquid wicking properties. FTCl can be placed directly on a suture line for transferring fluid exuded therethrough.
An underdrape is placed over FTCl and includes a slot exposing a portion of same. FTC.2 comprises a suitable hydrophobic foam material, such as polyurethane ether, and is placed over the underdrape slot in communication with FTCl. Negative pressure is applied to FTC2 through a connecting fluid transfer component FTC.3. A negative pressure source can comprises a manual device or a power-operated suction device. The tissue closure method includes a manual operating mode using a manual suction device with an automatic shut off for discontinuing suction when a predetermined volume of fluid has been drained. An automatic operating mode utilizes a microprocessor, which can be preprogrammed to respond to various patient and operating conditions. The method proceeds through several phases with different components in place and different patient interface functions occurring in each.
An underdrape is placed over FTCl and includes a slot exposing a portion of same. FTC.2 comprises a suitable hydrophobic foam material, such as polyurethane ether, and is placed over the underdrape slot in communication with FTCl. Negative pressure is applied to FTC2 through a connecting fluid transfer component FTC.3. A negative pressure source can comprises a manual device or a power-operated suction device. The tissue closure method includes a manual operating mode using a manual suction device with an automatic shut off for discontinuing suction when a predetermined volume of fluid has been drained. An automatic operating mode utilizes a microprocessor, which can be preprogrammed to respond to various patient and operating conditions. The method proceeds through several phases with different components in place and different patient interface functions occurring in each.
Description
2 PCT/US2006/038855 Externally-Applied Patient Interface System and Method Technical Field The present invention relates generally to medical devices and methods for treating closed wounds and incisions and fbr managing moisture therein, and in particular to a system and method for draining and/or irrigating tissue separations, such as surgical incisions, and for compressing and stabilizing a dissected or traumatized field with ambient air pressure created by an external patient interface component and a vacuum source.
Background Art Tissue separations can result from surgical procedures and other causes, such as traumatic and chronic wounds. Va,rious medical procedures are employed to close tissue separations. An important consideration relates to securing separate tissue portions together in order to promote closure and healing. Incisions and wounds can be closed with sutures, staples and other medical closure devices. The "first intention" (primary intention healing) in surgery is to "close" the incision. For load-bearing tissues, such as bone;
fascia, and muscle, this requires substantial material, be it suture material, staples, or plates and screws. For the wound to be "closed," the,epithelial layer must seal. To accomplish this, the "load bearing"
areas of the cutaneous and subcutaneous layers (i.e., the deep dermal elastic layer and the superficial fascia or fibrous layers of'the adipose tissue, respectively) must also at least be held in approximation long enough for collagen deposition to take place to unite the separated parts.
Other important considerations include controlling bleeding, reducing scarring, eliminating the potential of hematoma, seroma, and."dead-space" formation and managing pain. Dead space problems are more apt to occur in the subcutaneous closure.
Relatively shallow incisions can normally be closed with surface-applied closure techniques, such as sutures, staples, glues and adhesive tape strips. However, deeper incisions may well require not only skin surface closure, but also time-consuming placement of multiple layers of sutures in the load-bearing planes.
Infection prevention is another important consideration. Localized treatments include various antibiotics and dressings, which control or prevent bacteria at the incision or wound site. Infections can also be treated'.and controlled systemically with suitable antibiotics and other pharmacologics.
Other tissue-separation treatment objectives include minimizing the traumatic and 1o scarring effects of surgery and minimizing edema. Accordingly, various closure techniques, postoperative procedures and pharmacologics are used to reduce postoperative swelling, bleeding, seroma, infection and other undesirable, postoperative side effects.
Because separated tissue considerations are, so prevalent in the medical field, including most surgeries, effective, expedient, infection-free and aesthetic tissue closure is highly desirable from the standpoint of both patients and health-care practitioners. The system, interface and method of the present invention can thus be widely practiced and potentially provide widespread benefits to many patients.
Fluid control considerations are typically involved in treating tissue separations. For example, subcutaneous bleeding occurs at the fascia and muscle layers in surgical incisions.
Accordingly, deep drain tubes are commonly installed for the purpose of draining such incisions. Autotransfusion has experienced increasing popularity in recent years as equipment and techniques for reinfusing patients' whole blood have advanced considerably.
Such procedures have the advantage of reducing dependence on blood donations and their inherent risks. Serous fluids are .also;typically exuded from incision and wound sites and
Background Art Tissue separations can result from surgical procedures and other causes, such as traumatic and chronic wounds. Va,rious medical procedures are employed to close tissue separations. An important consideration relates to securing separate tissue portions together in order to promote closure and healing. Incisions and wounds can be closed with sutures, staples and other medical closure devices. The "first intention" (primary intention healing) in surgery is to "close" the incision. For load-bearing tissues, such as bone;
fascia, and muscle, this requires substantial material, be it suture material, staples, or plates and screws. For the wound to be "closed," the,epithelial layer must seal. To accomplish this, the "load bearing"
areas of the cutaneous and subcutaneous layers (i.e., the deep dermal elastic layer and the superficial fascia or fibrous layers of'the adipose tissue, respectively) must also at least be held in approximation long enough for collagen deposition to take place to unite the separated parts.
Other important considerations include controlling bleeding, reducing scarring, eliminating the potential of hematoma, seroma, and."dead-space" formation and managing pain. Dead space problems are more apt to occur in the subcutaneous closure.
Relatively shallow incisions can normally be closed with surface-applied closure techniques, such as sutures, staples, glues and adhesive tape strips. However, deeper incisions may well require not only skin surface closure, but also time-consuming placement of multiple layers of sutures in the load-bearing planes.
Infection prevention is another important consideration. Localized treatments include various antibiotics and dressings, which control or prevent bacteria at the incision or wound site. Infections can also be treated'.and controlled systemically with suitable antibiotics and other pharmacologics.
Other tissue-separation treatment objectives include minimizing the traumatic and 1o scarring effects of surgery and minimizing edema. Accordingly, various closure techniques, postoperative procedures and pharmacologics are used to reduce postoperative swelling, bleeding, seroma, infection and other undesirable, postoperative side effects.
Because separated tissue considerations are, so prevalent in the medical field, including most surgeries, effective, expedient, infection-free and aesthetic tissue closure is highly desirable from the standpoint of both patients and health-care practitioners. The system, interface and method of the present invention can thus be widely practiced and potentially provide widespread benefits to many patients.
Fluid control considerations are typically involved in treating tissue separations. For example, subcutaneous bleeding occurs at the fascia and muscle layers in surgical incisions.
Accordingly, deep drain tubes are commonly installed for the purpose of draining such incisions. Autotransfusion has experienced increasing popularity in recent years as equipment and techniques for reinfusing patients' whole blood have advanced considerably.
Such procedures have the advantage of reducing dependence on blood donations and their inherent risks. Serous fluids are .also;typically exuded from incision and wound sites and
-3-require drainage and disposal. Fresh incisions and wounds typically exude blood and other fluids at the patient's skin surface for several days during initial healing, particularly along the stitch and staple lines along which the separated tissue portions are closed.
Another area of fluid control relates to irrigation. Various irrigants are supplied to separated tissue areas for counteririg infection, anesthetizing, introducing growth factors and otherwise promoting healing. An effective fluid control system preferably accommodates both draining and irrigating functiqns sequentially or simultaneously.
Common orthopedic surgical procedures include total joint replacements (TJRs) of the hip, knee, elbow, shoulder, foot and other joints. The resulting tissue separations are often subjected to flexure and moVement associated with the articulation of the replacement joints. Although the joints can be immobilized as a treatment option, atrophy and stiffness tend to set in and prolong the rehabilitation period. A better option is to restore joint functions as soon as possible. Thus, an important objective of orthopedic surgery relates to promptly restoring to patients the maximum use of their limbs with maximum ranges of movement.
Similar considerations arise in connection with various other medical procedures. For example, arthrotomy, reconstructive and cosmetic procedures, including flaps and scar revisions, also require tissue closures and are often subjected to movement and stretching.
Other examples include incisions and wounds in areas of thick or unstable subcutaneous tissue, where splinting of skin and;subcutaneous tissue might reduce dehiscence of deep sutures. The demands of mobilizing the extremity and the entire patient conflict with the restrictions of currently available methods of external compression and tissue stabilization.
For example, various types of bandage wraps and compressive hosiery are commonly used for these purposes, but none provides the advantages and benefits of the present invention
Another area of fluid control relates to irrigation. Various irrigants are supplied to separated tissue areas for counteririg infection, anesthetizing, introducing growth factors and otherwise promoting healing. An effective fluid control system preferably accommodates both draining and irrigating functiqns sequentially or simultaneously.
Common orthopedic surgical procedures include total joint replacements (TJRs) of the hip, knee, elbow, shoulder, foot and other joints. The resulting tissue separations are often subjected to flexure and moVement associated with the articulation of the replacement joints. Although the joints can be immobilized as a treatment option, atrophy and stiffness tend to set in and prolong the rehabilitation period. A better option is to restore joint functions as soon as possible. Thus, an important objective of orthopedic surgery relates to promptly restoring to patients the maximum use of their limbs with maximum ranges of movement.
Similar considerations arise in connection with various other medical procedures. For example, arthrotomy, reconstructive and cosmetic procedures, including flaps and scar revisions, also require tissue closures and are often subjected to movement and stretching.
Other examples include incisions and wounds in areas of thick or unstable subcutaneous tissue, where splinting of skin and;subcutaneous tissue might reduce dehiscence of deep sutures. The demands of mobilizing the extremity and the entire patient conflict with the restrictions of currently available methods of external compression and tissue stabilization.
For example, various types of bandage wraps and compressive hosiery are commonly used for these purposes, but none provides the advantages and benefits of the present invention
-4-The aforementioned procedures, as well as a number of other applications discussed below, can benefit from a tissue-closure treatment system and method with a surface-applied patient interface for fluid control and external compression.
Postoperative fluid drainage can be accomplished with various combinations of tubes, sponges, and porous materials adapted for gathering and draining bodily fluids. The prior art includes technologies and methodqlogies for assisting drainage. For example, the Zamierowski U.S. Patents No. 4,969,880; No. 5,100,396; No. 5,261,893; No.
Postoperative fluid drainage can be accomplished with various combinations of tubes, sponges, and porous materials adapted for gathering and draining bodily fluids. The prior art includes technologies and methodqlogies for assisting drainage. For example, the Zamierowski U.S. Patents No. 4,969,880; No. 5,100,396; No. 5,261,893; No.
5,527,293; and No. 6,071,267 disclose the use of pressure gradients, i.e., vacuum and positive pressure, to assist with fluid drainage from wounds, including surgical incision sites.
Such pressure lo gradients can be established by applying porous sponge material either internally or externally to a wound, covering same with a permeable, semi-permeable, or impervious membrane, and connecting a suction vacuum source thereto. Fluid drawn from the patient is collected for disposal. Such fluid control methodologies have been shown to achieve significant improvements in patient healing. Another aspect of fluid management, postoperative and otherwise, relates to the application of fluids to wound sites for purposes of irrigation, infection control, pain control, growth factor application, etc.
Wound drainage devices are also used to achieve fixation and immobility of the tissues, thus aiding healing and closure. This can be accomplished by both internal closed wound drainage and external, open-wound vacuum devices appliedto the wound surface. Fixation of tissues in apposition can also be achieved by bolus tie-over dressings (Stent dressings), taping, strapping and (contact) casting.
Surgical wounds and incisions can benefit from tissue stabilization and fixation, .~.
which can facilitate cell migration pd cell and collagen bonding. Such benefits from tissue stabilization and fixation can occur in connection with many procedures, including fixation of bone fractures and suturing for purposes of side-to-side skin layer fixation.
Moisture management is another critical aspect of surgical wound care involving blood and exudate in deep tissues and transudate at or near the skin surface.
For example, a moist phase should first be provide,d at the epithelial layer for facilitating cell migration. A
tissue-drying phase should next occur in order to facilitate developing the functional keratin layer. Moisture management can also effectively control bacteria, which can be extracted along with the discharged fluids. Residual bacteria can be significantly reduced by wound drying procedures. In some cases such two-stage moist-dry sequential treatments can provide satisfactory bacterial control and eliminate or reduce dependence on antibiotic and antiseptic agents.
Concurrently with such phases, an effective treatment protocol would maintain stabilization and fixation while preventing disruptive forces within the wound. The treatment protocol should also handle varying amounts of wound exudate, including the maximum quantities that typically exude duririg the first 48 hours after surgery.
Closed drainage procedures commonly involve tubular drains placed within surgical incisions.
Open drainage procedures can employ gauze dressings and other absorptive products for absorbing fluids.
However, many previous fluid-handling procedures and products tended to require additional clean-up steps, expose patients and healthcare professionals to fluid contaminants and require regular dressing changes. Moreover, insufficient drainage could result in residual blood, exudate and transudate becoming isolated in the tissue planes in proximity to surgical incisions.
Such pressure lo gradients can be established by applying porous sponge material either internally or externally to a wound, covering same with a permeable, semi-permeable, or impervious membrane, and connecting a suction vacuum source thereto. Fluid drawn from the patient is collected for disposal. Such fluid control methodologies have been shown to achieve significant improvements in patient healing. Another aspect of fluid management, postoperative and otherwise, relates to the application of fluids to wound sites for purposes of irrigation, infection control, pain control, growth factor application, etc.
Wound drainage devices are also used to achieve fixation and immobility of the tissues, thus aiding healing and closure. This can be accomplished by both internal closed wound drainage and external, open-wound vacuum devices appliedto the wound surface. Fixation of tissues in apposition can also be achieved by bolus tie-over dressings (Stent dressings), taping, strapping and (contact) casting.
Surgical wounds and incisions can benefit from tissue stabilization and fixation, .~.
which can facilitate cell migration pd cell and collagen bonding. Such benefits from tissue stabilization and fixation can occur in connection with many procedures, including fixation of bone fractures and suturing for purposes of side-to-side skin layer fixation.
Moisture management is another critical aspect of surgical wound care involving blood and exudate in deep tissues and transudate at or near the skin surface.
For example, a moist phase should first be provide,d at the epithelial layer for facilitating cell migration. A
tissue-drying phase should next occur in order to facilitate developing the functional keratin layer. Moisture management can also effectively control bacteria, which can be extracted along with the discharged fluids. Residual bacteria can be significantly reduced by wound drying procedures. In some cases such two-stage moist-dry sequential treatments can provide satisfactory bacterial control and eliminate or reduce dependence on antibiotic and antiseptic agents.
Concurrently with such phases, an effective treatment protocol would maintain stabilization and fixation while preventing disruptive forces within the wound. The treatment protocol should also handle varying amounts of wound exudate, including the maximum quantities that typically exude duririg the first 48 hours after surgery.
Closed drainage procedures commonly involve tubular drains placed within surgical incisions.
Open drainage procedures can employ gauze dressings and other absorptive products for absorbing fluids.
However, many previous fluid-handling procedures and products tended to require additional clean-up steps, expose patients and healthcare professionals to fluid contaminants and require regular dressing changes. Moreover, insufficient drainage could result in residual blood, exudate and transudate becoming isolated in the tissue planes in proximity to surgical incisions.
-6-Still further, certain hemorrhages and other subdermal conditions can be treated with hemostats applying compression at the skin surface. Free fluid edema resorption can be expedited thereby.
Heretofore there has not been available an externally-applied patient interface system and the metliod with the advantage~ and features of the present invention.
Disclosure of the Invention In the practice of the preserit invention, a system and method are provided for enhancing closure of separated tissue portions using a surface-applied patient interface.
Subsurface drainage, irrigation and autotransfusion components can optionally be used in conjunction with the surface-applied,: external interface. The external interface can be advantageously placed over a stitch or staple line and includes a primary transfer component comprising a strip of porous material; such as rayon, applied directly to the patient for wicking or transferring fluid to a secondary transfer component comprising a sponge or foam material. An underdrape is placed between the transfer elements for passing fluid therebetween through an underdrape opening, such as a slot. An overdrape is placed over the secondary transfer component and the surrounding skin surface. The patient interface is connected to a negative pressure source, such as a vacuum assisted closure device, wall suction or a mecllanical suction pump. A manual control embodiment utilizes a finite capacity fluid reservoir with a shut-off valve for discontinuing drainage when a predetermined amount of fluid is collected. An automatic control embodiment utilizes a microprocessor, which is adapted for programming to respond to various inputs in controlling the operation of the negative pressure source. A closed wound or incision treatment method of the present invention involves three phases of fluid control activity, which correspond to
Heretofore there has not been available an externally-applied patient interface system and the metliod with the advantage~ and features of the present invention.
Disclosure of the Invention In the practice of the preserit invention, a system and method are provided for enhancing closure of separated tissue portions using a surface-applied patient interface.
Subsurface drainage, irrigation and autotransfusion components can optionally be used in conjunction with the surface-applied,: external interface. The external interface can be advantageously placed over a stitch or staple line and includes a primary transfer component comprising a strip of porous material; such as rayon, applied directly to the patient for wicking or transferring fluid to a secondary transfer component comprising a sponge or foam material. An underdrape is placed between the transfer elements for passing fluid therebetween through an underdrape opening, such as a slot. An overdrape is placed over the secondary transfer component and the surrounding skin surface. The patient interface is connected to a negative pressure source, such as a vacuum assisted closure device, wall suction or a mecllanical suction pump. A manual control embodiment utilizes a finite capacity fluid reservoir with a shut-off valve for discontinuing drainage when a predetermined amount of fluid is collected. An automatic control embodiment utilizes a microprocessor, which is adapted for programming to respond to various inputs in controlling the operation of the negative pressure source. A closed wound or incision treatment method of the present invention involves three phases of fluid control activity, which correspond to
-7-different stages of the healing process. In a first phase active drainage is handled. In a second phase components can be independently or sequentially disengaged. In a third phase the secondary transfer component can optionally be left in place for protection and to aid in evacuating any residual fluid from the suture/staple line through the primary transfer component.
In otlier embodiments of the invention, components of the dressing system can be premanufactured for efficient application. A foam piece can be provided with a f-ull or partial rayon cover and a close-fitting overdrape. An access panel with a reclosable seal strip can be installed on the overdrape for access to the foam pieces and the wound area. A
premanufactured external dressing can be provided with a sheath receiving a foam piece, which is accessible through a reclosable seal strip for replacement or reorientation.
Treatment area access is also provided through the seal strip. The system can also be employed as a hemostat.
Brief Description of Drawings The drawings constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof.
Fig. 1 is a schematic, block diagram of a tissue closure treatment and system embodying the present invention.
Fig. 2 is a perspective view of an incision tissue separation with a deep drain tube installed.
Fig. 3 is a perspective view thereof, showing the separated tissue sutured together at the skin.
In otlier embodiments of the invention, components of the dressing system can be premanufactured for efficient application. A foam piece can be provided with a f-ull or partial rayon cover and a close-fitting overdrape. An access panel with a reclosable seal strip can be installed on the overdrape for access to the foam pieces and the wound area. A
premanufactured external dressing can be provided with a sheath receiving a foam piece, which is accessible through a reclosable seal strip for replacement or reorientation.
Treatment area access is also provided through the seal strip. The system can also be employed as a hemostat.
Brief Description of Drawings The drawings constitute a part of this specification and include exemplary embodiments of the present invention and illustrate various objects and features thereof.
Fig. 1 is a schematic, block diagram of a tissue closure treatment and system embodying the present invention.
Fig. 2 is a perspective view of an incision tissue separation with a deep drain tube installed.
Fig. 3 is a perspective view thereof, showing the separated tissue sutured together at the skin.
-8-Fig. 4 is a perspective view thereof, showing the separated tissue sutured together at the deep dermal layer below the skin surface.
Fig. 5 is a perspective view thereof, showing a rayon strip primary fluid transfer component (FTC. 1) and an underdrape being placed on the stitch line.
Fig. 6 is a perspective view thereof, showing FTC.1 and the underdrape in place on the stitch line.
Fig. 7 is a perspective view, thereof, showing a secondary fluid transfer component (FTC.2) in place.
Fig. 8 is a perspective view thereof, showing an overdrape in place.
Fig. 9 is a perspective view thereof, sllowing a connecting fluid transfer component (FTC.3) in place for connecting the system to a negative pressure source.
Fig. 10 is a cross-sectional'view thereof, taken generally along line 10-10 in Fig. 9 and particularly showing FTC.3.
Fig. 11 a is a perspective view thereof, showing FTC.3 removed and the overdrape scored for ventilation.
Fig. 11b is a perspective view thereof, showing the patient interface removed along a perforated tear line in the underdrape and a slit line in the overdrape.
Fig. 11 c is a perspective view of a patient interface adapted for prepackaging, application to a patient and connection to a negative pressure source.
Fig. 5 is a perspective view thereof, showing a rayon strip primary fluid transfer component (FTC. 1) and an underdrape being placed on the stitch line.
Fig. 6 is a perspective view thereof, showing FTC.1 and the underdrape in place on the stitch line.
Fig. 7 is a perspective view, thereof, showing a secondary fluid transfer component (FTC.2) in place.
Fig. 8 is a perspective view thereof, showing an overdrape in place.
Fig. 9 is a perspective view thereof, sllowing a connecting fluid transfer component (FTC.3) in place for connecting the system to a negative pressure source.
Fig. 10 is a cross-sectional'view thereof, taken generally along line 10-10 in Fig. 9 and particularly showing FTC.3.
Fig. 11 a is a perspective view thereof, showing FTC.3 removed and the overdrape scored for ventilation.
Fig. 11b is a perspective view thereof, showing the patient interface removed along a perforated tear line in the underdrape and a slit line in the overdrape.
Fig. 11 c is a perspective view of a patient interface adapted for prepackaging, application to a patient and connection to a negative pressure source.
-9-Figs. 12a-d show alternative embodiment elbow connecting devices FTC.3a-d respectively.
Figs. 12e,f show a modified FTC.2a with removable wedges to facilitate articulation, such as flexure of a patient joint.
Figs. 12g,h show alternative embodiment external patient interface assemblies.
Figs. 13a-c comprise a flowchart showing a tissue closure treatment method embodying the present invention.
Fig. 14 is a schematic, block diagram of an automated tissue closure treatment system comprising an alternative embodiment of the present invention.
Fig. 15 is a cross-sectional view of the alternative embodiment automated tissue closure treatment system.
Fig. 16 is a partial flowchart of an alternative embodiment automated tissue closure treatment method embodying the present invention.
Fig. 17 is a fragmentary, perspective view of a tissue closure treatment system comprising an alternative embodimerit of the present invention, with a reclosable access panel.
Fig. 18 is a perspective view of the reclosable access panel.
Fig 19 is a cross-sectional view of the tissue closure treatment system, taken generally along line 19-19 in Fig 18.
Figs. 12e,f show a modified FTC.2a with removable wedges to facilitate articulation, such as flexure of a patient joint.
Figs. 12g,h show alternative embodiment external patient interface assemblies.
Figs. 13a-c comprise a flowchart showing a tissue closure treatment method embodying the present invention.
Fig. 14 is a schematic, block diagram of an automated tissue closure treatment system comprising an alternative embodiment of the present invention.
Fig. 15 is a cross-sectional view of the alternative embodiment automated tissue closure treatment system.
Fig. 16 is a partial flowchart of an alternative embodiment automated tissue closure treatment method embodying the present invention.
Fig. 17 is a fragmentary, perspective view of a tissue closure treatment system comprising an alternative embodimerit of the present invention, with a reclosable access panel.
Fig. 18 is a perspective view of the reclosable access panel.
Fig 19 is a cross-sectional view of the tissue closure treatment system, taken generally along line 19-19 in Fig 18.
-10-Fig 20 is an enlarged, cross-sectional view of the tissue closure system, particularly showing a reclosable seal strip thereof.
Fig. 21 is a perspective view of the tissue closure system, showing the seal strip open.
Fig 22 is a perspective view of the tissue closure system, showing the seal strip open and a foam piece removed.
Fig 23 is a cross-sectional view of an external dressing assembly, which comprises an alternative embodiment of the present invention.
Fig. 24 is a cross-sectional view of an alternative embodiment tissue closure system with internal and external foam pieces.
Fig. 25 is a cross-sectional view of the system shown in Fig 24, showing the progressive healing of tissue in the wound.
Fig. 26 is a cross-sectional view of the system shown in Fig 24, showing the reepithelialization of the wound.
Fig 27 is a cross-sectional view of a foam piece partially enclosed in rayon.
Fig. 28 is a cross-sectional view of an alternative embodiment tissue closure system, with an external foam piece and an internal foam piece assembly.
Fig. 29 is a cross-sectional view thereof, shown partially collapsed under ambient atmospheric pressure.
Fig. 21 is a perspective view of the tissue closure system, showing the seal strip open.
Fig 22 is a perspective view of the tissue closure system, showing the seal strip open and a foam piece removed.
Fig 23 is a cross-sectional view of an external dressing assembly, which comprises an alternative embodiment of the present invention.
Fig. 24 is a cross-sectional view of an alternative embodiment tissue closure system with internal and external foam pieces.
Fig. 25 is a cross-sectional view of the system shown in Fig 24, showing the progressive healing of tissue in the wound.
Fig. 26 is a cross-sectional view of the system shown in Fig 24, showing the reepithelialization of the wound.
Fig 27 is a cross-sectional view of a foam piece partially enclosed in rayon.
Fig. 28 is a cross-sectional view of an alternative embodiment tissue closure system, with an external foam piece and an internal foam piece assembly.
Fig. 29 is a cross-sectional view thereof, shown partially collapsed under ambient atmospheric pressure.
-11-Fig. 30 is a perspective view of an alternative construction dressing with a reclosable seal strip and fluid access ports.
Fig. 31 is a perspective view of the underside of the dressing, showing a middle backing strip being removed.
Fig. 32 is a perspective view of the dressing, showing side backing strips being removed.
Fig. 33 is a perspective view of the dressing, shown with a squeeze bulb evacuator attached to a fluid port thereof.
Fig 34 is a perspective view of the dressing, shown partially-collapsed under atmospheric pressure.
Fig. 35 is a'perspective view of the dressing, shown with the seal strip open.
Fig. 36 is a perspective view of the dressing, shown with the foam piece removed.
Fig. 37 is a cross-sectional 'view of a foam piece fully-enclosed in rayon.
Fig 38 is a perspective view of an alternative embodiment dressing with a separate liner and foam piece.
Fig. 39 is a perspective view of the dressing, sliown with the foam piece for moved.
Fig. 40 is a perspective vie~v of the dressing, shown with the liner removed.
Fig. 41 is a cross-sectional view of an alternative embodiment dressing with a sheath bottom panel comprising a wicking material.
Fig. 31 is a perspective view of the underside of the dressing, showing a middle backing strip being removed.
Fig. 32 is a perspective view of the dressing, showing side backing strips being removed.
Fig. 33 is a perspective view of the dressing, shown with a squeeze bulb evacuator attached to a fluid port thereof.
Fig 34 is a perspective view of the dressing, shown partially-collapsed under atmospheric pressure.
Fig. 35 is a'perspective view of the dressing, shown with the seal strip open.
Fig. 36 is a perspective view of the dressing, shown with the foam piece removed.
Fig. 37 is a cross-sectional 'view of a foam piece fully-enclosed in rayon.
Fig 38 is a perspective view of an alternative embodiment dressing with a separate liner and foam piece.
Fig. 39 is a perspective view of the dressing, sliown with the foam piece for moved.
Fig. 40 is a perspective vie~v of the dressing, shown with the liner removed.
Fig. 41 is a cross-sectional view of an alternative embodiment dressing with a sheath bottom panel comprising a wicking material.
-12-Fig. 42 is a cross-sectional view of an alternative embodiment dressing system with a covered foam-core transfer element.
Fig. 43 is a cross-sectional view thereof, showing the dressing compressed under pressure.
Fig. 44 is a top plail view thereof.
Fig. 45 is a cross-sectional 'view thereof, showing the dressing configuration prior to application to a patient and taken gerierally along line 45-45 in Fig. 44.
Fig. 46 is a top plan view ofan application involving multiple dressings covering an elongated tissue separation, such as a surgical incision.
Fig. 47 is a perspective view of a wound with drain strips installed in preparation for closure.
Fig. 48 is a cross-sectional view of a dressing comprising an alternative embodiment of the present invention with upper and lower rayon layers.
Fig. 49 is a cross-sectional view thereof, with the dressing compressed.
Fig. 50 is a cross-sectional view of a dressing comprising an alternative embodiment of the present invention with a rayon cover enclosing a reticulated foam core.
Fig. 51 is a cross-sectional view thereof, with the dressing compressed.
Fig. 52 is a cross-sectional view of a dressing comprising an alternative embodiment of the present invention with a sensor connected to a controller.
Fig. 43 is a cross-sectional view thereof, showing the dressing compressed under pressure.
Fig. 44 is a top plail view thereof.
Fig. 45 is a cross-sectional 'view thereof, showing the dressing configuration prior to application to a patient and taken gerierally along line 45-45 in Fig. 44.
Fig. 46 is a top plan view ofan application involving multiple dressings covering an elongated tissue separation, such as a surgical incision.
Fig. 47 is a perspective view of a wound with drain strips installed in preparation for closure.
Fig. 48 is a cross-sectional view of a dressing comprising an alternative embodiment of the present invention with upper and lower rayon layers.
Fig. 49 is a cross-sectional view thereof, with the dressing compressed.
Fig. 50 is a cross-sectional view of a dressing comprising an alternative embodiment of the present invention with a rayon cover enclosing a reticulated foam core.
Fig. 51 is a cross-sectional view thereof, with the dressing compressed.
Fig. 52 is a cross-sectional view of a dressing comprising an alternative embodiment of the present invention with a sensor connected to a controller.
-13-Fig. 53 is a perspective view of an experimental model of the dressing for observing fluid flow therethrough.
Fig. 54 is a graph showing'wetted surface area of the reticulated foam core with respect to liquid volume for different;conditions.
Fig. 55 is a cross-sectional view of a hemostat comprising an alternative embodiment of the present invention.
Best Mode for Carrying Out the Invention 1. Introduction and Environment As required, detailed embodiments of the present invention are disclosed herein;
however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
II. Tissue Closure System 2 Referring to the drawings in more detail, the reference numeral. 2 generally designates a tissue closure treatment system embodying the present invention. As shown in Fig. 1, the system 2 is adapted for use on a patient 4 with an incision or wound 6, which can be closed by a stitch line 8 consisting of sutures 10, staples or other suitable medical fasteners.
A patient interface 12 consists of an optional deep drain 14 connected to a deep drain negative pressure source 15 associated witli a deep drainage reservoir 17 and an external patient interface 16 including a primary fluid transfer component FTC.1 comprising a strip of
Fig. 54 is a graph showing'wetted surface area of the reticulated foam core with respect to liquid volume for different;conditions.
Fig. 55 is a cross-sectional view of a hemostat comprising an alternative embodiment of the present invention.
Best Mode for Carrying Out the Invention 1. Introduction and Environment As required, detailed embodiments of the present invention are disclosed herein;
however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
II. Tissue Closure System 2 Referring to the drawings in more detail, the reference numeral. 2 generally designates a tissue closure treatment system embodying the present invention. As shown in Fig. 1, the system 2 is adapted for use on a patient 4 with an incision or wound 6, which can be closed by a stitch line 8 consisting of sutures 10, staples or other suitable medical fasteners.
A patient interface 12 consists of an optional deep drain 14 connected to a deep drain negative pressure source 15 associated witli a deep drainage reservoir 17 and an external patient interface 16 including a primary fluid transfer component FTC.1 comprising a strip of
-14-rayon or other suitable porous material, an underdrape 20 generally covering FTC.1 and including a slot 20a, a secondary fluid transfer component FTC.2 comprising a hydrophobic sponge and an overdrape 24.
A fluid handling subsystem 26 includes the deep drain negative pressure source
A fluid handling subsystem 26 includes the deep drain negative pressure source
15 and a surface drain negative pressure source 28, which can be combined for applications where a common negative pressure, source and a collection receptacle are preferred. The negative pressure sources 15, 28 can operate either manually or under power.
Examples of both types are well-known in the medical art. For example, a manually operable portable vacuum source (MOPVS) is shown in U.S. Patent No. 3,115,138, which is incorporated herein by reference. The MOPVS:is available from Zimmer, Inc. of Dover, Ohio under the trademark HEMOVAC . Bulb-type actuators, such as that shown in U.S. Patent No.4,828,546 (incorporated herein:by reference) and available from Surgidyne, Inc. of Eden Prairie, Minnesota, can be used on,smaller wounds, for shorter durations or in multiples.
Moreover, power-actuated vacuum can be provided by vacuum assisted closure equipment available under the trademark THE VAC from Kinetic Concepts, Inc. of San Antonio, Texas. Still further, many health-care facilities, particularly hospitals and clinics, are equipped with suction systems with sources of suction available at wall-mounted outlets.
A finite capacity reservoir 30 is fluidically connected to the negative pressure source 28 and is adapted to discharge to a waste receptacle 32. A. shut-off valve 34 is associated with the reservoir 30 and is adapted to automatically discontinue drainage when the reservoir is filled to a predetermin.ed volume.
An optional autotransfusion subsystem 36 can be connected to the deep drain 14 and is adapted for reinfusing the patient 4 with his or her own blood. U.S. Patent No. 5,785,700 discloses such an autotransfusion system with a portable detachable vacuum source, which is available from Zimmer, Inc. and is, iricorporated herein by reference.
Fig. 2 shows an incision 6 forming first and second separated tissue portions 38a,b with incision edges 40a,b. The incision 6 extends from and is open at the skin 42, through the deep dermal layer 44 and the subcutaneous layer 46, to approximately the fascia 48. A
deep drain tube 50 is placed in a lower part of the incision 6 and penetrates the skin 42 at an opening 52.
Fig. 3 shows the incision edges 40a,b secured together by sutures 54 forming a stitch line 56 at the skin surface 42. As an alternative to sutures 54, various other medical fasteners, such as staples, can be used. Fig. 4 shows sutures 55 placed in the deep dermal layer 44 below the skin surface 42.
Fig. 5 shows application of FTC.1 on top of the stitch line 8. FTC.l preferably comprises a suitable porous wicking material, such as rayon, which is well-suited for wicking the fluid that exudes along the stitch line 8. Rayon also tends to dry relatively quickly, and thus efficiently transfers fluid therethrough. The underdrape 20 is placed over FTC.1 and the adjacent skin surface 42. Its slot 20a is generally centered along the centerline of FTC.1 and directly above the stitch line 8. FTC:l and the underdrape 20 can be preassembled in a roll or some other suitable configuration adapted to facilitate placement on the stitch line 8 in any desired length. Fig. 6 shows FTC.1 and the underdrape 20 in place.
The secondary fluid transfer component FTC.2 is shown installed in Fig. 7. It preferably comprises a suitable hydrophobic foam material, such as polyurethane ether (PUE), which comprises a reticulated, lattice-like (foam) material capable of being collapsed by vacuum force (negative pressure) in order to exert positive "shrink-wrap"
type compression on skin surface and still maintain channels that allow passage of fluid. As
Examples of both types are well-known in the medical art. For example, a manually operable portable vacuum source (MOPVS) is shown in U.S. Patent No. 3,115,138, which is incorporated herein by reference. The MOPVS:is available from Zimmer, Inc. of Dover, Ohio under the trademark HEMOVAC . Bulb-type actuators, such as that shown in U.S. Patent No.4,828,546 (incorporated herein:by reference) and available from Surgidyne, Inc. of Eden Prairie, Minnesota, can be used on,smaller wounds, for shorter durations or in multiples.
Moreover, power-actuated vacuum can be provided by vacuum assisted closure equipment available under the trademark THE VAC from Kinetic Concepts, Inc. of San Antonio, Texas. Still further, many health-care facilities, particularly hospitals and clinics, are equipped with suction systems with sources of suction available at wall-mounted outlets.
A finite capacity reservoir 30 is fluidically connected to the negative pressure source 28 and is adapted to discharge to a waste receptacle 32. A. shut-off valve 34 is associated with the reservoir 30 and is adapted to automatically discontinue drainage when the reservoir is filled to a predetermin.ed volume.
An optional autotransfusion subsystem 36 can be connected to the deep drain 14 and is adapted for reinfusing the patient 4 with his or her own blood. U.S. Patent No. 5,785,700 discloses such an autotransfusion system with a portable detachable vacuum source, which is available from Zimmer, Inc. and is, iricorporated herein by reference.
Fig. 2 shows an incision 6 forming first and second separated tissue portions 38a,b with incision edges 40a,b. The incision 6 extends from and is open at the skin 42, through the deep dermal layer 44 and the subcutaneous layer 46, to approximately the fascia 48. A
deep drain tube 50 is placed in a lower part of the incision 6 and penetrates the skin 42 at an opening 52.
Fig. 3 shows the incision edges 40a,b secured together by sutures 54 forming a stitch line 56 at the skin surface 42. As an alternative to sutures 54, various other medical fasteners, such as staples, can be used. Fig. 4 shows sutures 55 placed in the deep dermal layer 44 below the skin surface 42.
Fig. 5 shows application of FTC.1 on top of the stitch line 8. FTC.l preferably comprises a suitable porous wicking material, such as rayon, which is well-suited for wicking the fluid that exudes along the stitch line 8. Rayon also tends to dry relatively quickly, and thus efficiently transfers fluid therethrough. The underdrape 20 is placed over FTC.1 and the adjacent skin surface 42. Its slot 20a is generally centered along the centerline of FTC.1 and directly above the stitch line 8. FTC:l and the underdrape 20 can be preassembled in a roll or some other suitable configuration adapted to facilitate placement on the stitch line 8 in any desired length. Fig. 6 shows FTC.1 and the underdrape 20 in place.
The secondary fluid transfer component FTC.2 is shown installed in Fig. 7. It preferably comprises a suitable hydrophobic foam material, such as polyurethane ether (PUE), which comprises a reticulated, lattice-like (foam) material capable of being collapsed by vacuum force (negative pressure) in order to exert positive "shrink-wrap"
type compression on skin surface and still maintain channels that allow passage of fluid. As
-16-shown, its footprint is slightly smaller than that of the underdrape 20, thus providing an underdrape margin 20b. The wicking layer of FTC.1 can, as an alternative, be sized equal to or almost equal to the footprint of FTC.2. This configuration lends itself to prefabrication as an individual, pre-assembled pad that can be employed by simply removing a releasing layer backing from an adhesive lined underdrape. This configuration also lends itself to easy total removal and replacement of the central part of the assembly without removing drape already adhered to skin if removal and replacement is the desired clinical option rather then staged removal or prolonged single application.
Fig. 8 shows the overdrape 24 applied over FTC.2 and the underdrape 20, with a 1o margin 24a extending beyond the underdrape margin 22b and contacting the patient's skin surface (dermis) 42. Figs. 9 and 10 show a patch connector 58 mounted on FTC.2 and comprising a hydrophobic foam (PUE) material core 58a sandwiched between drape layers 58b. A vacuum drain tube 60 includes an inlet end 60a embedded in the foam core 58a and extends between the drape layers 58b to an outlet end 60b connected to the surface drainage negative pressure source 28.
Fig. 11a shows FTC.3 removed, e.g. by cutting away portions of the overdrape 24 to provide an overdrape opening 54. In addition, the overdrape 24 can be slit at 55 to fiirther ventilate FTC.2. Draining FTC.2 under negative pressure, and further drying it with air circulation (Fig. 11 a) can provide significant healing advantages by reducing the growth of various microbes requiring moist environments in FTC.2. Such microbes and various toxins produced thereby can thus be evaporated, neutralized and otherwise prevented from reentering the patient. Microbe co~trol can also be accomplished by introducing antiseptics in and irrigating various components of the patient interface 12, including the drapes 20, 24;
FTC.1; FTC.2; and FTC.3.
Fig. 8 shows the overdrape 24 applied over FTC.2 and the underdrape 20, with a 1o margin 24a extending beyond the underdrape margin 22b and contacting the patient's skin surface (dermis) 42. Figs. 9 and 10 show a patch connector 58 mounted on FTC.2 and comprising a hydrophobic foam (PUE) material core 58a sandwiched between drape layers 58b. A vacuum drain tube 60 includes an inlet end 60a embedded in the foam core 58a and extends between the drape layers 58b to an outlet end 60b connected to the surface drainage negative pressure source 28.
Fig. 11a shows FTC.3 removed, e.g. by cutting away portions of the overdrape 24 to provide an overdrape opening 54. In addition, the overdrape 24 can be slit at 55 to fiirther ventilate FTC.2. Draining FTC.2 under negative pressure, and further drying it with air circulation (Fig. 11 a) can provide significant healing advantages by reducing the growth of various microbes requiring moist environments in FTC.2. Such microbes and various toxins produced thereby can thus be evaporated, neutralized and otherwise prevented from reentering the patient. Microbe co~trol can also be accomplished by introducing antiseptics in and irrigating various components of the patient interface 12, including the drapes 20, 24;
FTC.1; FTC.2; and FTC.3.
-17-Fig. 11b shows the patient interface 12 removed along underdrape perforated tear lines 56 and slit lines 59 in overdrape 24. It will be appreciated that substantially the entire patient interface 12, except for underdrape and overdrape margins 20b, 24a can thus be removed to provide access to the stitch line 8 and the dermis 42 for visual inspection, evaluation, cleaning, stitch removal, dressing change (e.g., with prepackaged patient interface 12a as shown in Fig. 11 c), consideration of further treatment options, etc.
For example, the overdrape 24 can be slit to around the perimeter or footprint of FTC.2 to permit removing the same. Preferably FTC.2 is easily releasable from the underdrape 20 and FTC.1 whereby FTC.2 can be grasped and lifted upwardly to facilitate running a scalpel through the 1o overdrape 24 and into a separation between the underside of FTC.2 and the underdrape 20.
The FTC.1 can then optionally be removed by tearing the underdrape 20 along its tear lines 56 and removing same as shown in Fig. 11b.
Fig. 11 c shows a prepackaged patient interface 12a adapted for initial or "dressing change" application. Optionally, the rayon strip FTC.1 can have the same configuration or "footprint" as the foam sponge FTC.2, thus eliminating the underdrape 20. The prepackaged patient interface 12a can be sterilely packaged to facilitate placement directly on a stitch line 8. Alternatively, the patient interface components can be prepackaged individually or in suitable groups comprising subassemblies of the complete patient interface 12.
For example, the underdrape/FTC.1 and the overdrape/FTC.2 subassemblies respectively can be prepackaged individually. Various sizes and component configurations of the patient interface can be prepackaged for application as indicated by particular patient conditions.
Preferably, certain sizes and configurations would tend to be relatively "universal" and thus applicable to particular nledical procedures, such as TJRs, whereby patient interface
For example, the overdrape 24 can be slit to around the perimeter or footprint of FTC.2 to permit removing the same. Preferably FTC.2 is easily releasable from the underdrape 20 and FTC.1 whereby FTC.2 can be grasped and lifted upwardly to facilitate running a scalpel through the 1o overdrape 24 and into a separation between the underside of FTC.2 and the underdrape 20.
The FTC.1 can then optionally be removed by tearing the underdrape 20 along its tear lines 56 and removing same as shown in Fig. 11b.
Fig. 11 c shows a prepackaged patient interface 12a adapted for initial or "dressing change" application. Optionally, the rayon strip FTC.1 can have the same configuration or "footprint" as the foam sponge FTC.2, thus eliminating the underdrape 20. The prepackaged patient interface 12a can be sterilely packaged to facilitate placement directly on a stitch line 8. Alternatively, the patient interface components can be prepackaged individually or in suitable groups comprising subassemblies of the complete patient interface 12.
For example, the underdrape/FTC.1 and the overdrape/FTC.2 subassemblies respectively can be prepackaged individually. Various sizes and component configurations of the patient interface can be prepackaged for application as indicated by particular patient conditions.
Preferably, certain sizes and configurations would tend to be relatively "universal" and thus applicable to particular nledical procedures, such as TJRs, whereby patient interface
-18-inventory can be simplified. Alternatively, the individual components can be assembled in various sizes and configurations for "custom" applications.
Figs 12a-d show alternative connecting fluid transfer components FTC.3a-d for connecting FTC.2 to the surface drainage negative pressure source 28. FTC.3a (Fig. 12a) shows a patch connector with a similar construction to FTC.3 and adapted for placement at any location on the overdrape 24. FTC.3a is provided with a Leur lock connector 62.
FTC.3b (Fig. 12b) comprises a strip of hydrophobic (PUE) foam material partially covered by an overdrape 64, which can be configured as a wrap around a patient's limb or extremity 66. FTC.3c (Fig.12c) is an elbow-type connector. FTC.3d (Fig. 12d) is a bellows-type elbow connector, which is adapted to accommodate deflection of the vacuum drain tube 60.
Figs.12e,f show an alternative construction of FTC.2a with multiple, removable wedges 57 formed therein and, adapted for accommodating articulation, such as joint flexure.
The flexibility of FTC.2a can thus be considerably enhanced for purposes of patient comfort, mobility and flexibility. Such wedges can extend transversely and/or longitudinally with respect to FTC.2a. FTC.2a functions in a similar manner with and without the wedges 57 in place or removed.
Fig. 12g shows a modified.patient interface 312 with the underdrape 20 placed below FTC.1. This configuration permits removing FTC. 1 without disturbing the underdrape 20.
Fig. 12h shows a further modified,patient interface 412 with FTC.1 having the same configuration or footprint as FTC.2, whereby they can be fabricated and bonded together. In this configuration the underdrape 2,0 can be omitted.
III. Treatment Method Figs.13a-c comprise a flowchart for a method embodying the present invention.
From start 70 the method proceeds to patient diagnosis and evaluation at 72 and treatment plan at
Figs 12a-d show alternative connecting fluid transfer components FTC.3a-d for connecting FTC.2 to the surface drainage negative pressure source 28. FTC.3a (Fig. 12a) shows a patch connector with a similar construction to FTC.3 and adapted for placement at any location on the overdrape 24. FTC.3a is provided with a Leur lock connector 62.
FTC.3b (Fig. 12b) comprises a strip of hydrophobic (PUE) foam material partially covered by an overdrape 64, which can be configured as a wrap around a patient's limb or extremity 66. FTC.3c (Fig.12c) is an elbow-type connector. FTC.3d (Fig. 12d) is a bellows-type elbow connector, which is adapted to accommodate deflection of the vacuum drain tube 60.
Figs.12e,f show an alternative construction of FTC.2a with multiple, removable wedges 57 formed therein and, adapted for accommodating articulation, such as joint flexure.
The flexibility of FTC.2a can thus be considerably enhanced for purposes of patient comfort, mobility and flexibility. Such wedges can extend transversely and/or longitudinally with respect to FTC.2a. FTC.2a functions in a similar manner with and without the wedges 57 in place or removed.
Fig. 12g shows a modified.patient interface 312 with the underdrape 20 placed below FTC.1. This configuration permits removing FTC. 1 without disturbing the underdrape 20.
Fig. 12h shows a further modified,patient interface 412 with FTC.1 having the same configuration or footprint as FTC.2, whereby they can be fabricated and bonded together. In this configuration the underdrape 2,0 can be omitted.
III. Treatment Method Figs.13a-c comprise a flowchart for a method embodying the present invention.
From start 70 the method proceeds to patient diagnosis and evaluation at 72 and treatment plan at
-19-74. Deep drains 14 are installed at 76 as necessary, and the incision is sutured at 78. Surface interface components 12 are applied at 80 and connected to the external components (i.e., negative pressure sources 15, 28) at 82. The collection reservoir capacity is preset at 84 based on such factors as nature of wound/incision, blood flow, etc.
Phase 1 Deep drainage occurs at 86- and active surface drainage occurs at 88, both being influenced by the negative pressure sources 15, 28. The negative pressure source 28 causes the PUE foam FTC.2 to partially collapse, which correspondingly draws down the overdrape 24 and exerts a positive, compressive force on the closed wound or incision 6.
In the closed 1o environment of the patient interface 12, such force is effectively limited to ambient atmosphere. This limiting control feature protects the patient from excessive force exerted by the patient interface 12. The steady force of up to one atmosphere applied across the closed wound or incision 6 functions similarly to a splint or plaster cast in controlling edema and promoting healing.
A "Reservoir Full" condition is detected at 90 and branches to an interrupt of the surface drainage negative pressure; at 92, after which the reservoir contents are inspected and disposed of at 94. If surface bleeding:is detected by visual inspection at decision box 96, the method branches to a"Discontinue, Active Surface Drainage" step at 98. If the suture line is actively draining at decision box 100; the method loops to the active surface drainage step 88 and continues, otherwise active surface drainage discontinues at 98, i.e. when the wound/incision is neither bleeding inor exuding fluids.
Phase 1 is generally characterized by deep drainage (interactive or passive) and active surface drainage under the influende of manual or powered suction. The normal duration is
Phase 1 Deep drainage occurs at 86- and active surface drainage occurs at 88, both being influenced by the negative pressure sources 15, 28. The negative pressure source 28 causes the PUE foam FTC.2 to partially collapse, which correspondingly draws down the overdrape 24 and exerts a positive, compressive force on the closed wound or incision 6.
In the closed 1o environment of the patient interface 12, such force is effectively limited to ambient atmosphere. This limiting control feature protects the patient from excessive force exerted by the patient interface 12. The steady force of up to one atmosphere applied across the closed wound or incision 6 functions similarly to a splint or plaster cast in controlling edema and promoting healing.
A "Reservoir Full" condition is detected at 90 and branches to an interrupt of the surface drainage negative pressure; at 92, after which the reservoir contents are inspected and disposed of at 94. If surface bleeding:is detected by visual inspection at decision box 96, the method branches to a"Discontinue, Active Surface Drainage" step at 98. If the suture line is actively draining at decision box 100; the method loops to the active surface drainage step 88 and continues, otherwise active surface drainage discontinues at 98, i.e. when the wound/incision is neither bleeding inor exuding fluids.
Phase 1 is generally characterized by deep drainage (interactive or passive) and active surface drainage under the influende of manual or powered suction. The normal duration is
-20-approximately two to three days, during which time post-operative or post-trauma swelling norrn.ally reaches its maximum and begins to recede.
Phase 2 Fig. 13b shows Phase 2 commencing with a "Staged Component Removal?" decision box 102. An affirmative decision leads to independently deactivating and removing components at 103, including discontinuing active suction at 104, which transforms the hydrophobic PUE foam (FTC.2) internal pressure from negative to positive and allows the collapsed FTC.2 to reexpand at 106, potentially increasing surface composite pressure from ambient to positive. Preferably this transition occurs without applying undue pressure to the surface from the decompressed, expanding FTC.2. During Phase 1, negative pressure (i.e., suction/vacuum) tends to compress FTC.2 and correspondingly contracts the overdrape 24, adding to the compression exerted by FTC.2. When the application of negative pressure discontinues, either manually or automatically, FTC.2 re-expands against the constraints of the overdrape 24, and in an equal and opposite reaction presses against the skin 42, particularly along the stitch line 8. FTC.2 can thus automatically transform from ambient to positive pressure simply by disconti.nuing the application of the vacuum source.
The positive pressure exerted on the skin 42 continues to compress and stabilize tissue along the suture line 8 (step 108) in order to reduce swelling and cooperates with the operation of FTC.1 and FTC.2 to continue drainage by evaporation at the suture line 8 at step 110. A negative determination at decision box 102 leads to interface removal at 112 and, unless treatment is to be terminated, stitch line inspection and treatment at 113 and interface replacement at 114, which can involve all or part of the patient interface 12.
The method then proceeds to Phase 3.
Phase 3
Phase 2 Fig. 13b shows Phase 2 commencing with a "Staged Component Removal?" decision box 102. An affirmative decision leads to independently deactivating and removing components at 103, including discontinuing active suction at 104, which transforms the hydrophobic PUE foam (FTC.2) internal pressure from negative to positive and allows the collapsed FTC.2 to reexpand at 106, potentially increasing surface composite pressure from ambient to positive. Preferably this transition occurs without applying undue pressure to the surface from the decompressed, expanding FTC.2. During Phase 1, negative pressure (i.e., suction/vacuum) tends to compress FTC.2 and correspondingly contracts the overdrape 24, adding to the compression exerted by FTC.2. When the application of negative pressure discontinues, either manually or automatically, FTC.2 re-expands against the constraints of the overdrape 24, and in an equal and opposite reaction presses against the skin 42, particularly along the stitch line 8. FTC.2 can thus automatically transform from ambient to positive pressure simply by disconti.nuing the application of the vacuum source.
The positive pressure exerted on the skin 42 continues to compress and stabilize tissue along the suture line 8 (step 108) in order to reduce swelling and cooperates with the operation of FTC.1 and FTC.2 to continue drainage by evaporation at the suture line 8 at step 110. A negative determination at decision box 102 leads to interface removal at 112 and, unless treatment is to be terminated, stitch line inspection and treatment at 113 and interface replacement at 114, which can involve all or part of the patient interface 12.
The method then proceeds to Phase 3.
Phase 3
-21-Fig. 13c shows Phase 3 of the treatment method wherein deep drainage is discontinued and the tube(s) is removed at 118. The overdrape 24 and FTC.2 are removed at 120, 122 respectively. The underd~ape 20 and FTC.1 are preferably configured to permit visual inspection of the suture line,8 therethrough at 124. When the suture line 8 has closed sufficiently, the underdrape 20 and; FTC.1 are removed at 126 and the treatment ends at 128.
Alternatively and if indicated by the patient's condition, all or part of the interface 12 can be replaced in Phase 3 and treatment continued.
IV. Alternative Embodiment Tissue ;Closure System 202 Fig. 14 schematically shows a tissue closure system 202 comprising an alternative embodiment of the present intention, which includes a microprocessor or controller 204, wliich can be connected to one or more sensors 206 coupled to the patient interface 12 for sensing various conditions associated with the patient 4. The microprocessor 204 can be programmed to operate a solenoid 208 coupled to a valve 210 associated witli the reservoir 30 and controlling fluid flow induced by a negative pressure source 228 through its connection to the patient interface,12.
Fig. 15 shows the tissue closure system 202 with the microprocessor 204 connected to multiple sensors 206a,b,c each of which is associated with a flow control component, such as a valve, 210a,b,c respectively. Each flow control component 210a,b,c is associated with a respective negative pressure source 228a,b,c, which in turn controls fluid discharge into canisters or reservoirs 212a,b,c respectively. For example, the patient interface 12 can comprise an external patient interface 16 as described above and a pair of deep drainage tubes 50a,b. The patient interface 12 includes an optional supply component 214, which can comprise one or more fluid reservoirs, pumps (manual or powered) and associated controls, which can connect to the microprocessor 204 for system control. The supply component 214
Alternatively and if indicated by the patient's condition, all or part of the interface 12 can be replaced in Phase 3 and treatment continued.
IV. Alternative Embodiment Tissue ;Closure System 202 Fig. 14 schematically shows a tissue closure system 202 comprising an alternative embodiment of the present intention, which includes a microprocessor or controller 204, wliich can be connected to one or more sensors 206 coupled to the patient interface 12 for sensing various conditions associated with the patient 4. The microprocessor 204 can be programmed to operate a solenoid 208 coupled to a valve 210 associated witli the reservoir 30 and controlling fluid flow induced by a negative pressure source 228 through its connection to the patient interface,12.
Fig. 15 shows the tissue closure system 202 with the microprocessor 204 connected to multiple sensors 206a,b,c each of which is associated with a flow control component, such as a valve, 210a,b,c respectively. Each flow control component 210a,b,c is associated with a respective negative pressure source 228a,b,c, which in turn controls fluid discharge into canisters or reservoirs 212a,b,c respectively. For example, the patient interface 12 can comprise an external patient interface 16 as described above and a pair of deep drainage tubes 50a,b. The patient interface 12 includes an optional supply component 214, which can comprise one or more fluid reservoirs, pumps (manual or powered) and associated controls, which can connect to the microprocessor 204 for system control. The supply component 214
-22-optionally takes to one or more of the tubes 50, 60 for delivering fluid to the patient through the deep drainage tubes 50 or through the external patient interface 16. Such fluids can comprise, for example, antibiotics,, , and aesthetics, irrigating agents, growth factor, and any , ., other fluid beneficial in promoting healing, countering infection and improving patient comfort.
~I..
The methodology of the treatment with the alternative embodiment tissue closure system 202 is shown in Fig. 16 and generally involves modified pretreatment 230 and Phase 1 procedures. From "Start" the me,thod proceeds to a diagnosis/evaluation step 234, a treatment plan step 236, deep drain installation 238, suturing at 240, external interface component application 242, microprocessor programming 244 and connection of the application components at 246, such as connection of the tubing. Phase 1 commences with deep drainage at 248, active suction interface at 250 and a "Suture Line Actively Draining?"
decision box 252. If the suture line is actively draining, the method loops back to the active suction interface step 250, otherwise (negative determination at 252) it proceeds to Phase 2.
V. Applications Without limitation on the generality of usefixl applications of the tissue closure systems 2 and 202 of the present invention, the following partial list represents potential patient conditions and procedures, which might indicate application of the present invention.
= Over closed tissue separations, such as surgical incisions.
= Over joints where the incision is subject to movement and stretching, such as arthrotomy, reconstructive proceedures, cosmetic procedures, flaps, scar revisions, Total Joint Replacement (TJR) procedures, i.e., hip, knee, elbow, shoulder and foot.
= Any wound in an area of thick or unstable subcutaneous tissue, where splinting of skin and subcutaneous tissue might reduce dehiscence of deep sutures.
~I..
The methodology of the treatment with the alternative embodiment tissue closure system 202 is shown in Fig. 16 and generally involves modified pretreatment 230 and Phase 1 procedures. From "Start" the me,thod proceeds to a diagnosis/evaluation step 234, a treatment plan step 236, deep drain installation 238, suturing at 240, external interface component application 242, microprocessor programming 244 and connection of the application components at 246, such as connection of the tubing. Phase 1 commences with deep drainage at 248, active suction interface at 250 and a "Suture Line Actively Draining?"
decision box 252. If the suture line is actively draining, the method loops back to the active suction interface step 250, otherwise (negative determination at 252) it proceeds to Phase 2.
V. Applications Without limitation on the generality of usefixl applications of the tissue closure systems 2 and 202 of the present invention, the following partial list represents potential patient conditions and procedures, which might indicate application of the present invention.
= Over closed tissue separations, such as surgical incisions.
= Over joints where the incision is subject to movement and stretching, such as arthrotomy, reconstructive proceedures, cosmetic procedures, flaps, scar revisions, Total Joint Replacement (TJR) procedures, i.e., hip, knee, elbow, shoulder and foot.
= Any wound in an area of thick or unstable subcutaneous tissue, where splinting of skin and subcutaneous tissue might reduce dehiscence of deep sutures.
-23-= Wounds over reconstructive procedures in which irregular cavities are created. These include resection of tumors, implants, bone, and other tissues. Changes in length and geometry of limbs, and chahges in size, position, and contour of bones and other deep structures.
= Wounds in which eliminatiQn and prevention of dead space is important.
= Treatment of hematomas and seromas.
= Amputation stumps.
= Abdominal, thoracic, flank; and other wounds in which splinting of the wound might assist closing and mobilizing the patient during the postoperative interval.
= Wounds in areas of fragile or sensitive skin, where repeated removal and replacement of tape or other adhesives might produce pain, irritation, or blistering of skin in the vicinity of the wound. Also where dressing changes might produce shear or displacement of tissue so as to compromise primary wound healing.
= Wounds in cases where the, patient wishes to bathe before the skin has healed sufficiently to allow protection from contamination with bath or shower water.
= Wounds subject to contamination with feces, urine, and other body fluids.
= Pediatric, geriatric, psychiatric, and neurologic patients, and other patients likely to disturb dressings and wounds:
= Patients with multiple consitltants and care givers, where repeated inspection of the wound miglit compromise healing.
= Deep closure and surface sutures and staples.
= Any clean surgical or traumatic incision, open, or fully or partially closed by sutures, or where the skin edges can be apposed to a gap no wider than the width of the
= Wounds in which eliminatiQn and prevention of dead space is important.
= Treatment of hematomas and seromas.
= Amputation stumps.
= Abdominal, thoracic, flank; and other wounds in which splinting of the wound might assist closing and mobilizing the patient during the postoperative interval.
= Wounds in areas of fragile or sensitive skin, where repeated removal and replacement of tape or other adhesives might produce pain, irritation, or blistering of skin in the vicinity of the wound. Also where dressing changes might produce shear or displacement of tissue so as to compromise primary wound healing.
= Wounds in cases where the, patient wishes to bathe before the skin has healed sufficiently to allow protection from contamination with bath or shower water.
= Wounds subject to contamination with feces, urine, and other body fluids.
= Pediatric, geriatric, psychiatric, and neurologic patients, and other patients likely to disturb dressings and wounds:
= Patients with multiple consitltants and care givers, where repeated inspection of the wound miglit compromise healing.
= Deep closure and surface sutures and staples.
= Any clean surgical or traumatic incision, open, or fully or partially closed by sutures, or where the skin edges can be apposed to a gap no wider than the width of the
-24-negative pressure zone of the dressing, i.e. where the maximunl separation is less than or equal to the width of FTC.1 (rayon strip).
= In cosmetic and reconstructive surgery, the systems and methods of the present invention can control and conceal the effects of early bleeding, exudation, ecchymosis, and edema of the wound.
= In surgery on the limbs, wh I ere compression and drainage by this method might eliminate or reduce the need for circumferential compressive wrapping.
= Tissue separations that are prone to protracted drainage, such as hip and knee incisions, and tissue separations in patients with health conditions, such as diabetes, that tend to inhibit healing. Shortened hospital stays might result from swelling reduction and control of drainage.
VI. Case Studies = General concept: sequential surface application of foam material (FTC.2) to surgical site and other wounds. Air-drying at the suture line is facilitated by the rayon strip (FTC.1).
= Phase 1: deep drainage (drain tube(s)), active or passive; active suction applied to surface PUE foam (placed on top of surgical incision, drains bleeding and exudate from suture line); active suction compresses PUE foam, thus applying positive compression to the entire dissection field; adhesive-lined film underdrape with an MVTR of 3-800 on skin underlying PUE foam; rayon (or other suitable porous wicking material) strip on suture line; similar type of adhesive film overdrape (MVTR
of 3-800) overlying PUE foam material.
= Duration: approximately 2-3 days, i.e. effective time for active drainage from incision/stitch line to cease and for suture line to dry and heal.
= In cosmetic and reconstructive surgery, the systems and methods of the present invention can control and conceal the effects of early bleeding, exudation, ecchymosis, and edema of the wound.
= In surgery on the limbs, wh I ere compression and drainage by this method might eliminate or reduce the need for circumferential compressive wrapping.
= Tissue separations that are prone to protracted drainage, such as hip and knee incisions, and tissue separations in patients with health conditions, such as diabetes, that tend to inhibit healing. Shortened hospital stays might result from swelling reduction and control of drainage.
VI. Case Studies = General concept: sequential surface application of foam material (FTC.2) to surgical site and other wounds. Air-drying at the suture line is facilitated by the rayon strip (FTC.1).
= Phase 1: deep drainage (drain tube(s)), active or passive; active suction applied to surface PUE foam (placed on top of surgical incision, drains bleeding and exudate from suture line); active suction compresses PUE foam, thus applying positive compression to the entire dissection field; adhesive-lined film underdrape with an MVTR of 3-800 on skin underlying PUE foam; rayon (or other suitable porous wicking material) strip on suture line; similar type of adhesive film overdrape (MVTR
of 3-800) overlying PUE foam material.
= Duration: approximately 2-3 days, i.e. effective time for active drainage from incision/stitch line to cease and for suture line to dry and heal.
-25-= Phase 2: Remove active suction by cutting off (elbow) coiunector and leave FTC.2 in place. Released from suction, FTC.2 expands against the overdrape and exerts positive pressure differential on the operation site. May maintain continued mild compression throughout Phase 2; residual drainage function through rayon strip and into FTC.2 provides continued drying of suture line. Deep drain tubes remain in place during Phase 2 for active deep drainage.
= Duration: approximately three days, i.e. days 3-6 after operation.
= Phase 3: remove overdrape,and FTC.2; leave underdrape and rayon strip in place;
visually observe wound healing progress; transparency desirable.
= Duration: several (e.g., up to three) weeks.
= Clinical trial confirmation: Closure of surgical site in upper chest area in patient with severe healing problems showed excellent results and rapid wound healing.
= Subcuticular (subepidermal) sutures avoid conflict with rayon strip and need for early suture removal, or pressure' on skin sutures beneath compressive black sponge.
= Option: use pressure transducer for interface pressure mapping of wound site and automate control and monitor pressures, flow, etc.
VII. Alternative Embodiment Tissue Closure System 302.
A tissue closure system 302 comprising an alternative embodiment of the present invention is shown in Figs. 17-22. The system 302 is adapted for closing a wound 304 with an undermined area 306 just above the fascia and an upper tissue separation 3081ocated primarily in the dermis and in the subcutaneous layer. A wedge-shaped internal fluid transfer component (foam piece) 310 is located in the tissue separation area 308 and is installed between side drapes 3121ocated ori either side of the wound 304. An external fluid transfer component (foam piece) 314 is placed on top of the internal component 310 and the side
= Duration: approximately three days, i.e. days 3-6 after operation.
= Phase 3: remove overdrape,and FTC.2; leave underdrape and rayon strip in place;
visually observe wound healing progress; transparency desirable.
= Duration: several (e.g., up to three) weeks.
= Clinical trial confirmation: Closure of surgical site in upper chest area in patient with severe healing problems showed excellent results and rapid wound healing.
= Subcuticular (subepidermal) sutures avoid conflict with rayon strip and need for early suture removal, or pressure' on skin sutures beneath compressive black sponge.
= Option: use pressure transducer for interface pressure mapping of wound site and automate control and monitor pressures, flow, etc.
VII. Alternative Embodiment Tissue Closure System 302.
A tissue closure system 302 comprising an alternative embodiment of the present invention is shown in Figs. 17-22. The system 302 is adapted for closing a wound 304 with an undermined area 306 just above the fascia and an upper tissue separation 3081ocated primarily in the dermis and in the subcutaneous layer. A wedge-shaped internal fluid transfer component (foam piece) 310 is located in the tissue separation area 308 and is installed between side drapes 3121ocated ori either side of the wound 304. An external fluid transfer component (foam piece) 314 is placed on top of the internal component 310 and the side
-26-drapes 312, and is covered by an outer drape 316. An optional innermost foam piece 330 can be located in and sized to fit the undermined area 306 and can transfer fluid and gradient forces to and from the internal foam piece 310.
A reclosable access pane13;18 is placed over an opening formed in the outer drape 316 and includes an adhesive-coated perimeter 320 surrounding an adhesive-free center area 322 with a reclosable seal strip 324, extending longitudinally down the centerline thereof.
The seal strip 324 includes a rib or.bead 326, which is releasably captured in a channel 328 (Fig. 20).
., :
In operation, the reclosable access panel 318 is adhesively secured around its perimeter 322 to the outer drape 31,; 6 and provides access to the foam pieces 310, 314 of the dressing system 302. For example, the foam pieces 310, 314 can be changed (Figs. 21 and 22), treatments can be applied and wound healing progress can be visually monitored.
VIII. Alternative External Dressing 402.
Figs. 23-27 show an external dressing 402, which can be premanufactured or preassembled and used for various;wound treatment and closure applications.
The dressing 402 includes a foam piece 404 partially enclosed in a rayon covering 406, which includes an open top 408 secured to an upper perimeter 410 of the foam piece 404, for example, by sutures, staples, adhesive or some other suitable mechanical fastener as shown at 412. The dressing 402 is preferably preassembled with an outer drape 414 including a foam-covering central portion 416 and a perimeter, patient-contact skirt portion 418. A
tucked margin 420 is formed at the intersection of the drape portions 416, 418 and partially underlies the foam piece 404 in order to protect the skinand prevent the formation of low-pressure, vacuum voids around the edge of the foam piece 404 whereat blistering could otherwise occur. In operation, the dressing 402 can be easily changed by cutting around the margin 420,
A reclosable access pane13;18 is placed over an opening formed in the outer drape 316 and includes an adhesive-coated perimeter 320 surrounding an adhesive-free center area 322 with a reclosable seal strip 324, extending longitudinally down the centerline thereof.
The seal strip 324 includes a rib or.bead 326, which is releasably captured in a channel 328 (Fig. 20).
., :
In operation, the reclosable access panel 318 is adhesively secured around its perimeter 322 to the outer drape 31,; 6 and provides access to the foam pieces 310, 314 of the dressing system 302. For example, the foam pieces 310, 314 can be changed (Figs. 21 and 22), treatments can be applied and wound healing progress can be visually monitored.
VIII. Alternative External Dressing 402.
Figs. 23-27 show an external dressing 402, which can be premanufactured or preassembled and used for various;wound treatment and closure applications.
The dressing 402 includes a foam piece 404 partially enclosed in a rayon covering 406, which includes an open top 408 secured to an upper perimeter 410 of the foam piece 404, for example, by sutures, staples, adhesive or some other suitable mechanical fastener as shown at 412. The dressing 402 is preferably preassembled with an outer drape 414 including a foam-covering central portion 416 and a perimeter, patient-contact skirt portion 418. A
tucked margin 420 is formed at the intersection of the drape portions 416, 418 and partially underlies the foam piece 404 in order to protect the skinand prevent the formation of low-pressure, vacuum voids around the edge of the foam piece 404 whereat blistering could otherwise occur. In operation, the dressing 402 can be easily changed by cutting around the margin 420,
-27-removing the foam piece 404 and the drape outer portion 416. The wound can thus be inspected, cleaned, debrided, treated,, etc. and a new dressing 402 put in place. The patient-contact skirt portion 418 of the original dressing can remain in place.
Fig. 23 shows a fluid flow (discharge) directional arrow 421 from an elbow coupling 417 and a discharge tube 419. Alternatively, fluid could be injected into the dressing 402 through the tube 419 and the coupling 417. Hydraulic/pneumatic compressive force arrows 423 are shown in Fig. 23 and represent the downward (i.e. into patient) forces, which can be established by compressing the foam;piece 404 under suction and then releasing the negative pressure differential, thus transitioning the dressing to a positive pressure differential. In a positive pressure differential mode, of operation, the dressing 402 controls edema by pressing the foam piece 404 against the tissite adjacent to the wound. There are many potential medical benefits from controlling edema in this manner. For example, healing is promoted, scar tissue is minimized and patient discomfort can be reduced.
Fig. 24 shows the external dressing 402 used in conjunction with an internal foam piece 422, which is located below the dermis at the top of the subcutaneous layer. The internal foam piece 422 is adapted' for applying a pressure differential within the subcutaneous layer whereby tissue growth and closure are promoted. The inside/outside configuration of the dressing system shown in Fig. 24 can rehabilitate and make pliable a wound edge 424 that has contracted and become hard, immobile and edematous by applying pressure differentials across the external and internal foam pieces 404, 422, such as compression (positive pressure differential) for edema control.
Fig. 25 shows the wound confined to the dermis 426 with another internal foam piece 428 in place. The subcutaneous laye'r is substantially healed. Fig. 26 shows the external foam piece 404 in place alone for drawing the wound edges 430 together at the epidermis.
Fig. 23 shows a fluid flow (discharge) directional arrow 421 from an elbow coupling 417 and a discharge tube 419. Alternatively, fluid could be injected into the dressing 402 through the tube 419 and the coupling 417. Hydraulic/pneumatic compressive force arrows 423 are shown in Fig. 23 and represent the downward (i.e. into patient) forces, which can be established by compressing the foam;piece 404 under suction and then releasing the negative pressure differential, thus transitioning the dressing to a positive pressure differential. In a positive pressure differential mode, of operation, the dressing 402 controls edema by pressing the foam piece 404 against the tissite adjacent to the wound. There are many potential medical benefits from controlling edema in this manner. For example, healing is promoted, scar tissue is minimized and patient discomfort can be reduced.
Fig. 24 shows the external dressing 402 used in conjunction with an internal foam piece 422, which is located below the dermis at the top of the subcutaneous layer. The internal foam piece 422 is adapted' for applying a pressure differential within the subcutaneous layer whereby tissue growth and closure are promoted. The inside/outside configuration of the dressing system shown in Fig. 24 can rehabilitate and make pliable a wound edge 424 that has contracted and become hard, immobile and edematous by applying pressure differentials across the external and internal foam pieces 404, 422, such as compression (positive pressure differential) for edema control.
Fig. 25 shows the wound confined to the dermis 426 with another internal foam piece 428 in place. The subcutaneous laye'r is substantially healed. Fig. 26 shows the external foam piece 404 in place alone for drawing the wound edges 430 together at the epidermis.
-28-Fig. 27 shows the external foam piece 404 covered on the sides and bottom by the rayon covering 406, leaving an open top 408.
IX. Alternative Embodiment Dressing System 502 Fig. 28 shows yet another alternative embodiment internal/external dressing system configuration 502 with an externalfoam piece 504 similar to the foam piece 404 described above and an internal foam assembly. 506 located in the dermis and in the subcutaneous layer.
The assembly 506 consists of a proximate internal foam piece 508, which can be located at the bottom of the subcutaneous layer,on top of the fascia in an undermined cavity 510 formed by the wound, and a distal internal~foam piece 4121ocated primarily in the dermis and the subcutaneous layer portions of the wound between the external foam piece 504 and the proximate internal foam piece 508.
The dressing system configuration 502 can be configured and reconfigured as necessary to accommodate various wound configurations in various stages of healing. For example, the proximate internal foam piece 508 can be removed when the undermined cavity 510 closes. Likewise, the distal internal foam piece 512 can be removed when the subcutaneous layer and the dermis ;have healed. Moreover, the foam pieces 504, 508 and 512 can be replaced with different sizes of foam pieces as necessary in connection with dressing changes and as the wound configuration changes. Such sizes and configurations can be chosen to optimize the beneficial effects of pressure gradients (both positive and negative), fluid control, edema control, antibacterial measures, irrigation and other treatment protocols.
Still further, the access panel 318 described above can be used in conjunction with the dressing system 502 in order to provide access to the foam pieces thereof and to the wound itself.
IX. Alternative Embodiment Dressing System 502 Fig. 28 shows yet another alternative embodiment internal/external dressing system configuration 502 with an externalfoam piece 504 similar to the foam piece 404 described above and an internal foam assembly. 506 located in the dermis and in the subcutaneous layer.
The assembly 506 consists of a proximate internal foam piece 508, which can be located at the bottom of the subcutaneous layer,on top of the fascia in an undermined cavity 510 formed by the wound, and a distal internal~foam piece 4121ocated primarily in the dermis and the subcutaneous layer portions of the wound between the external foam piece 504 and the proximate internal foam piece 508.
The dressing system configuration 502 can be configured and reconfigured as necessary to accommodate various wound configurations in various stages of healing. For example, the proximate internal foam piece 508 can be removed when the undermined cavity 510 closes. Likewise, the distal internal foam piece 512 can be removed when the subcutaneous layer and the dermis ;have healed. Moreover, the foam pieces 504, 508 and 512 can be replaced with different sizes of foam pieces as necessary in connection with dressing changes and as the wound configuration changes. Such sizes and configurations can be chosen to optimize the beneficial effects of pressure gradients (both positive and negative), fluid control, edema control, antibacterial measures, irrigation and other treatment protocols.
Still further, the access panel 318 described above can be used in conjunction with the dressing system 502 in order to provide access to the foam pieces thereof and to the wound itself.
-29-Fig. 29 shows the internal/external dressing system 502 compressed under the vacuum effects of an external vacuum sourcewith the drape 316 drawn tightly down on the compressed outer foam piece 504. ; Thus compressed, the system 502 is adapted to transfer positive pressure differential, compressive forces to the area of the wound.
X. Alternative Embodiment Dressing Assembly 602 Figs. 30-37 show a reclosable, preassembled external dressing assembly 602 comprising an alternative embodiment of the present invention. The dressing assembly 602 includes a foam piece 604, which can be completely covered in rayon 606 or some other suitable material with the desired absorbent and/or wicking capabilities. The foam piece 604 also includes a core 605 comprising a suitable material, such as polyurethane, hydrophobic foam. Alternatively, other foam materials with hydrophobic or hydrophilic properties can be utilized. Various sizes and shapes of the foam piece 604 can also be employed, including cutting and trimming it to size during the course of a medical procedure.
The foam piece 604 is removably placed in a reclosable sheath 608 including a bottom panel 610 selectively covered by removable, adhesive backing strips 612, 614 and 616 forming a central opening 618. As shown in Fig. 31, a central opening 618 in the bottom panel 610 is initially covered by the center backing strip 614. Removing the center backing strip 614 exposes the foam piece 6044hrough the opening 618. The reclosable sheath 608 also includes a top panel 620 with a reclosable seal strip 622 extending from end-to-end and generally longitudinally centered. The seal strip 622 can be similar in construction to the reclosable seal strip 324 describedAbove. The top panel 620 also includes fluid ports 324, 326, which can comprise, for exarriple, Leur lock connectors or some other suitable fluid connection device.
X. Alternative Embodiment Dressing Assembly 602 Figs. 30-37 show a reclosable, preassembled external dressing assembly 602 comprising an alternative embodiment of the present invention. The dressing assembly 602 includes a foam piece 604, which can be completely covered in rayon 606 or some other suitable material with the desired absorbent and/or wicking capabilities. The foam piece 604 also includes a core 605 comprising a suitable material, such as polyurethane, hydrophobic foam. Alternatively, other foam materials with hydrophobic or hydrophilic properties can be utilized. Various sizes and shapes of the foam piece 604 can also be employed, including cutting and trimming it to size during the course of a medical procedure.
The foam piece 604 is removably placed in a reclosable sheath 608 including a bottom panel 610 selectively covered by removable, adhesive backing strips 612, 614 and 616 forming a central opening 618. As shown in Fig. 31, a central opening 618 in the bottom panel 610 is initially covered by the center backing strip 614. Removing the center backing strip 614 exposes the foam piece 6044hrough the opening 618. The reclosable sheath 608 also includes a top panel 620 with a reclosable seal strip 622 extending from end-to-end and generally longitudinally centered. The seal strip 622 can be similar in construction to the reclosable seal strip 324 describedAbove. The top panel 620 also includes fluid ports 324, 326, which can comprise, for exarriple, Leur lock connectors or some other suitable fluid connection device.
-30-The sheath 608 can comprise polyethylene or some other suitable material chosen on the basis of performance criteria such as permeability, flexibility, biocompatibility and antibacterial properties. Various permeable and semi-permeable materials are com.monly used as skin drapes in medical applications where healing can be promoted by exposure to air circulation. The sheath 608 can be formed from such materials for applications where continuous vacuum suction is available and the dressing 602 is not required to be airtight.
According to an embodiment~of the method of the present invention, a dressing assembly 602 can be premanufacture,d, or custom-assembled from si.uitable components for particular applications. In a premapufactured version, the dressing 602 is preferably 1 o presterilized and packaged in sterile packaging.
A common application of the,dressing 602 is on a recently-closed surgical incision for controlling bleeding and other fluid exudate. For example, the dressing 602 can be placed on the patient with its bottom panel opening 618 located over a stitch line 636 (Fig. 36). The center backing strip 614 is peeled from the bottom panel 610 to expose the opening 618 and the adhesive 628 on the bottom panel 610 (Fig. 33). The opening 618 provides a fluid transfer, wliich can also be provided by constructing the sheath bottom pane1610 from a permeable material, or by providing other passage configurations therethrough.
The dressing 602 can then be placed on the patient; with the bottom panel adhesive providing temporary fixation. The side backing strips 6,12, 616 can then be removed, as shown in Fig. 32, and the bottom panel 610 completely secured to the patient.
The fluid ports 624, 626 are adapted for either extraction or infusion of fluids, or both, depending on the particular treatment methodology. For extraction purposes a vacuum source can be attached to one or both of the ports 624, 626, and can comprise a mechanical, powered pressure differential source,. such as wall suction. Alternatively, hand-operated
According to an embodiment~of the method of the present invention, a dressing assembly 602 can be premanufacture,d, or custom-assembled from si.uitable components for particular applications. In a premapufactured version, the dressing 602 is preferably 1 o presterilized and packaged in sterile packaging.
A common application of the,dressing 602 is on a recently-closed surgical incision for controlling bleeding and other fluid exudate. For example, the dressing 602 can be placed on the patient with its bottom panel opening 618 located over a stitch line 636 (Fig. 36). The center backing strip 614 is peeled from the bottom panel 610 to expose the opening 618 and the adhesive 628 on the bottom panel 610 (Fig. 33). The opening 618 provides a fluid transfer, wliich can also be provided by constructing the sheath bottom pane1610 from a permeable material, or by providing other passage configurations therethrough.
The dressing 602 can then be placed on the patient; with the bottom panel adhesive providing temporary fixation. The side backing strips 6,12, 616 can then be removed, as shown in Fig. 32, and the bottom panel 610 completely secured to the patient.
The fluid ports 624, 626 are adapted for either extraction or infusion of fluids, or both, depending on the particular treatment methodology. For extraction purposes a vacuum source can be attached to one or both of the ports 624, 626, and can comprise a mechanical, powered pressure differential source,. such as wall suction. Alternatively, hand-operated
-31-mechanical suction can be provided, such as a suction bulb 630 (Fig. 33) or a Hemovac device available from Zimmer Corp. of Warsaw, Indiana. Such hand-operated suction devices can accommodate patient mability and tend to be relatively simple to operate.
Powered suction and fluid pump devices can be preprogrammed to provide intermittent and alternating suction and infusion, and to automatically respond to patient condition feedback signals. As shown in Fig. 33, the application of a negative pressure differential (suction) collapses the sheath 608 onto the foam piece 604. The various dynamic fluid forces and fluid movement effects described above,can thus be brought into operation and controlled.
Fig. 34 shows the sheath 608 further collapsing on the foam piece 604 as a result of evacuation from both of the fluid ports 24, as indicated by the fluid flow arrows 632. The ambient air pressure force arrows 634 show the application of this force, which tends to collapse the sheath 608 onto the foam piece 604.
Fig. 35 shows opening the seal strip 622 for access to the interior of the dressing 602.
The foam piece 604 can then be removed, as shown in Fig. 36, whereby the stitch line 636 can be visually inspected and/or treated. The foam piece 604 can be flipped over or replaced, as necessary. Fig. 37 shows a cross-section of the foam piece 604, which can be completely covered in rayon or some other suitable wicking material 606 in order to accommodate placement of either side against the stitch line 636.
XI. Alternative Embodiment Dressing Assembly 702 Figs. 38-40 show a dressing assembly 702 comprising an alternative embodiment of the present invention and including a, foam piece 704 comprising any suitable hydrophobic or hydrophilic foam material. The foam piece 704 is selectively and removably located in a sheath 708, which can be similar to the sheath 608 described above. A liner 706 can comprise a piece of rayon or some other suitable material adapted to wick fluid from the stitch line 636
Powered suction and fluid pump devices can be preprogrammed to provide intermittent and alternating suction and infusion, and to automatically respond to patient condition feedback signals. As shown in Fig. 33, the application of a negative pressure differential (suction) collapses the sheath 608 onto the foam piece 604. The various dynamic fluid forces and fluid movement effects described above,can thus be brought into operation and controlled.
Fig. 34 shows the sheath 608 further collapsing on the foam piece 604 as a result of evacuation from both of the fluid ports 24, as indicated by the fluid flow arrows 632. The ambient air pressure force arrows 634 show the application of this force, which tends to collapse the sheath 608 onto the foam piece 604.
Fig. 35 shows opening the seal strip 622 for access to the interior of the dressing 602.
The foam piece 604 can then be removed, as shown in Fig. 36, whereby the stitch line 636 can be visually inspected and/or treated. The foam piece 604 can be flipped over or replaced, as necessary. Fig. 37 shows a cross-section of the foam piece 604, which can be completely covered in rayon or some other suitable wicking material 606 in order to accommodate placement of either side against the stitch line 636.
XI. Alternative Embodiment Dressing Assembly 702 Figs. 38-40 show a dressing assembly 702 comprising an alternative embodiment of the present invention and including a, foam piece 704 comprising any suitable hydrophobic or hydrophilic foam material. The foam piece 704 is selectively and removably located in a sheath 708, which can be similar to the sheath 608 described above. A liner 706 can comprise a piece of rayon or some other suitable material adapted to wick fluid from the stitch line 636
-32-into the foam piece 704, and further adapted to isolate the patient from direct contact with the foam piece 704. The liner 706 can; be sized to lay flat against the bottom panel of the sheath 708.
In operation, the dressing assembly 702 is adapted to utilize readily available components, such as the foam piece 704 and the liner 706, in a dressing adapted for wound inspection, wound treatment and component change procedures, all without having to remove the sheath or disturb its adhesive attachment to the patient. Fig. 39 shows removing the foam piece 704, which can be flipped ov,;er.for reuse or replaced. Fig. 40 shows removing the liner 706, which can also be easily replaced. With the liner 706 removed, the stitch line 636 is exposed for stitch removal, inspection, treatment, irrigation and other procedures. The sheath 708 can then be reclosed and vacuum-assisted and/or other treatment can resume.
XII. Alternative Embodiment Dressing Assembly 802 A dressing assembly 802 comprising an alternative embodiment of the present invention is shown in Fig. 41 and includes a foam piece 804 in a sheath 806 adapted for opening and closing through a reclosable seal strip 808. The sheath 806 includes an upper drape portion 810, which can comprise a suitable semi-permeable or impervious drape material. The sheath 806 includes a perimeter 812, which can be provided with an optional adhesive perimeter seal 813 adapte;d for providing a relatively fluid-tight seal around the sheath 806. The perimeter seal 813 can be relatively narrow in order to minimize patient discomfort, skin maceration, etc. A bottom panel 814 comprises a suitable wicking material, such as rayon, and extends to the sheath perimeter 812. The materials comprising the dressing 802 can be chosen for permeability or occlusiveness, biocompatibility, hydrophobic or hydrophilic reaction to liquids, bacteriastatic and antimicrobial properties, and other performance-related properties and criteria.
In operation, the dressing assembly 702 is adapted to utilize readily available components, such as the foam piece 704 and the liner 706, in a dressing adapted for wound inspection, wound treatment and component change procedures, all without having to remove the sheath or disturb its adhesive attachment to the patient. Fig. 39 shows removing the foam piece 704, which can be flipped ov,;er.for reuse or replaced. Fig. 40 shows removing the liner 706, which can also be easily replaced. With the liner 706 removed, the stitch line 636 is exposed for stitch removal, inspection, treatment, irrigation and other procedures. The sheath 708 can then be reclosed and vacuum-assisted and/or other treatment can resume.
XII. Alternative Embodiment Dressing Assembly 802 A dressing assembly 802 comprising an alternative embodiment of the present invention is shown in Fig. 41 and includes a foam piece 804 in a sheath 806 adapted for opening and closing through a reclosable seal strip 808. The sheath 806 includes an upper drape portion 810, which can comprise a suitable semi-permeable or impervious drape material. The sheath 806 includes a perimeter 812, which can be provided with an optional adhesive perimeter seal 813 adapte;d for providing a relatively fluid-tight seal around the sheath 806. The perimeter seal 813 can be relatively narrow in order to minimize patient discomfort, skin maceration, etc. A bottom panel 814 comprises a suitable wicking material, such as rayon, and extends to the sheath perimeter 812. The materials comprising the dressing 802 can be chosen for permeability or occlusiveness, biocompatibility, hydrophobic or hydrophilic reaction to liquids, bacteriastatic and antimicrobial properties, and other performance-related properties and criteria.
-33-In operation, the dressing 802 is placed on the patient over a wound or stitch line.
The perimeter adhesive 813 can provide temporary fixation and sealing. A strip of tape 816 can be placed over the sheath perimeter 812 for securing the sheath 806 in place. Fluid is transferred through the wicking material layer 814 to the foam piece 804 for evacuation through suitable fluid connectors, as described above, which can be attached to a vacuum source. Moreover, the dressing 802 is adapted for providing a positive pressure gradient, also as described above. The seal strip 808 permits access to the foam piece 804 for flipping over or changing, as indicated.
The foam piece 804, the drape upper portion 810 and the wicking material layer can be assembled for independent movement whereby the only attachment among these components occurs around the periuneter 812 where the drape upper portion 810 is connected to the wicking material layer 814. Such independent freedom of movement permits the dressing assembly 802 to reconfigixre itself and conform to the patient and various applied forces, such as pressure gradients. The individual components can thus expand and contract independently of eacli other without distorting the other components or interfering with the performance and comfort of the dressing assembly 802.
XIII. Alternative Embodiment Dressing System 902 A dressing system 902 comprising another alternative aspect or embodiment of the present invention is shown in Figs. 42-46 and includes a dressing 904 adapted for controlling the application of positive, compressive forces and/or negative, suction forces to a patient witli an incision-type tissue separation 906. Without limitation of the generality of useful applications of the system 902, the incision 906 can comprise a surgical incision, which can optionally be closed with stitches 908 or other suitable wound-closure procedures, including staples, adhesives, tapes, etc. The incision 906 can include a closed suction drainage tube
The perimeter adhesive 813 can provide temporary fixation and sealing. A strip of tape 816 can be placed over the sheath perimeter 812 for securing the sheath 806 in place. Fluid is transferred through the wicking material layer 814 to the foam piece 804 for evacuation through suitable fluid connectors, as described above, which can be attached to a vacuum source. Moreover, the dressing 802 is adapted for providing a positive pressure gradient, also as described above. The seal strip 808 permits access to the foam piece 804 for flipping over or changing, as indicated.
The foam piece 804, the drape upper portion 810 and the wicking material layer can be assembled for independent movement whereby the only attachment among these components occurs around the periuneter 812 where the drape upper portion 810 is connected to the wicking material layer 814. Such independent freedom of movement permits the dressing assembly 802 to reconfigixre itself and conform to the patient and various applied forces, such as pressure gradients. The individual components can thus expand and contract independently of eacli other without distorting the other components or interfering with the performance and comfort of the dressing assembly 802.
XIII. Alternative Embodiment Dressing System 902 A dressing system 902 comprising another alternative aspect or embodiment of the present invention is shown in Figs. 42-46 and includes a dressing 904 adapted for controlling the application of positive, compressive forces and/or negative, suction forces to a patient witli an incision-type tissue separation 906. Without limitation of the generality of useful applications of the system 902, the incision 906 can comprise a surgical incision, which can optionally be closed with stitches 908 or other suitable wound-closure procedures, including staples, adhesives, tapes, etc. The incision 906 can include a closed suction drainage tube
-34-910 in the base of the incision, which can be brought to the skin surface through a stab incision, using well-known surgical procedures.
The dressing 904 includes a dressing cover 909 with an optional perimeter base ring 912, which comprises a semi-permeable material with a layer of skin-compatible adhesive 914 applied to a lower face thereof, Prior to application of the dressing 904, the base ring adhesive 914 mounts a release paper backing 916 (Fig. 45) with a release tab 917 (Fig. 44).
The base ring 912 defines a central, proximal opening 918, through which the dressing 904 is downwardly open. A cover superstructure 920 includes a distal pane1922, a perimeter 924 generally defining a folding, collapsible edge, and a proximal return ring 926 secured to the 1o base ring 912 around the central opening 918 at another folding, collapsible edge. The base and return rings 912, 926 thus form an invaginated, double-thickness base structure 928 adapted to expand and collapse. A distal cover opening 930 is formed in the distal panel 922 and communicates with a flexible, bellows-shaped collapsible sheath, which in turn mounts a length of rigid tubing 934 terminating distally in a connector 936 comprising, for example, a needle-free, leur lock hub or other suitable tubing connection/closure device, such as an air valve. The tubing 934 includes a proxivnal end 935 communicating with the interior of the dressing cover 909.
An optional transfer assembly or element 938 is positioned within the cover 909 and is exposed through the central operiirig 918 tliereof. The transfer assembly 938 optionally includes a compressible, reticulated, core 940, which can comprise, for, example, polyurethane ether foam material chosen for its hydrophobic, resilient and memory performance characteristics. The transfer assembly 938 also includes a porous, flexible liner 942 comprising a material such as Owens rayon surgical dressing with liquid-wicking properties and biocompatibility for direct contact with patients' skin.
The dressing 904 includes a dressing cover 909 with an optional perimeter base ring 912, which comprises a semi-permeable material with a layer of skin-compatible adhesive 914 applied to a lower face thereof, Prior to application of the dressing 904, the base ring adhesive 914 mounts a release paper backing 916 (Fig. 45) with a release tab 917 (Fig. 44).
The base ring 912 defines a central, proximal opening 918, through which the dressing 904 is downwardly open. A cover superstructure 920 includes a distal pane1922, a perimeter 924 generally defining a folding, collapsible edge, and a proximal return ring 926 secured to the 1o base ring 912 around the central opening 918 at another folding, collapsible edge. The base and return rings 912, 926 thus form an invaginated, double-thickness base structure 928 adapted to expand and collapse. A distal cover opening 930 is formed in the distal panel 922 and communicates with a flexible, bellows-shaped collapsible sheath, which in turn mounts a length of rigid tubing 934 terminating distally in a connector 936 comprising, for example, a needle-free, leur lock hub or other suitable tubing connection/closure device, such as an air valve. The tubing 934 includes a proxivnal end 935 communicating with the interior of the dressing cover 909.
An optional transfer assembly or element 938 is positioned within the cover 909 and is exposed through the central operiirig 918 tliereof. The transfer assembly 938 optionally includes a compressible, reticulated, core 940, which can comprise, for, example, polyurethane ether foam material chosen for its hydrophobic, resilient and memory performance characteristics. The transfer assembly 938 also includes a porous, flexible liner 942 comprising a material such as Owens rayon surgical dressing with liquid-wicking properties and biocompatibility for direct contact with patients' skin.
-35-Without limitation on the generality of useful applications of the dressing system 902, post-operative incision dressing applications are particularly well-suited for same. The dressing 904 can be preassembled and sterile-packaged for opening under sterile conditions, such as those typically maintained in operating rooms. The central opening 918 can be sized to accommodate the tissue separati.on 906 witli sufficient overlap whereby the perimeter base ring adhesive 914 adheres to healthy skin around the area of the tissue separation 906 and beyond the area of underlying internal operative dissection. Multiple dressings 904 can be placed end-to-end (Fig. 46) or side-by-side in order to effectively cover relatively long incisions 950. In such multiple dressing applications, the stitch line 952 can be covered with an intervening barrier layer strip 948 at locations where the adhesive-coated base ring crosses same for purposes of patient comfort. The barrier layer strips 948 can comprise, for example:
Xeroform gauze available from Integrity Medical Devices, Inc. of Elwood, New Jersey;
Vaseline gauze; or straps of Owens rayon.
The base ring adhesive 914 preferably forms a relatively fluid-tight engagement around the treatment area. Optionally, the base ring 912 can comprise a, suitable semi-permeable membrane material, with suitable breathability characteristics for enhancing patient comfort and avoiding macexation in the contact areas. A suitable differential pressure source 944 is coupled to the tubing connector 936. Without limitation, the pressure source 944 can comprise automated and manual pressure sources. For example, automated wall suction is commonly available in operating rooms and elsewhere in health-care facilities.
For post-operative incision'dressings, operating room wall suction can be attached to the connector 936, the dressing 904 evacuated, and the wall suction disconnected whereby the connector 936 seals the system; It will be appreciated that a "steady-state" condition of equilibrium can be achieved with positive, ambient air pressure acting externally on the
Xeroform gauze available from Integrity Medical Devices, Inc. of Elwood, New Jersey;
Vaseline gauze; or straps of Owens rayon.
The base ring adhesive 914 preferably forms a relatively fluid-tight engagement around the treatment area. Optionally, the base ring 912 can comprise a, suitable semi-permeable membrane material, with suitable breathability characteristics for enhancing patient comfort and avoiding macexation in the contact areas. A suitable differential pressure source 944 is coupled to the tubing connector 936. Without limitation, the pressure source 944 can comprise automated and manual pressure sources. For example, automated wall suction is commonly available in operating rooms and elsewhere in health-care facilities.
For post-operative incision'dressings, operating room wall suction can be attached to the connector 936, the dressing 904 evacuated, and the wall suction disconnected whereby the connector 936 seals the system; It will be appreciated that a "steady-state" condition of equilibrium can be achieved with positive, ambient air pressure acting externally on the
-36-dressing cover 909 and the transfer assembly 938 compressed internally, and thus exerting compressive forces on the incision,906 and the surrounding area via compressive force arrows 939 (Fig. 43).
For exainple, Fig. 43 shows the dressing 904 collapsed with the rayon dressing liner 942 extending beyond the polyurethane ether foam core 940 and forming a double-thickness liner perimeter 946 located within the double-folded cover perimeter 924. In this configuration any liquid exudate fTpm the incision 906 is effectively transferred by wicking action of the rayon liner 942 away.;from the incision 906 via fluid traiisfer arrows 941.
Serosanguineous fluid emissions can.be expected from an incision line for a short period, commonly a day or two, after an operation. The wicking action of the rayon liner 942, coupled with the slight ambient air, circulation admitted through the semi-permeable base ring 912, cooperate to maintain the incision 906 and the healthy skin around it relatively dry in order to avoid maceration. The pressure differential provided by components of the dressing 904 can also contribute to extraction and removal of wound exudates, in cooperation with the wicking action described above. With the dressing 904 in its compressed configuration (Fig.
43), the tubing proximal end 935 can, engage and be pushed into the transfer element 938 for direct fluid transfer therebetween.
The evacuated dressing 904 provides a number of medical incision-closure and healing benefits. The stabilizing and',fixating effects on the incision and the surrounding tissue resulting from the forces applied by the dressing 904 tend to promote contact healing, as opposed to gap healing or healirig wherein opposing edges are sliding and moving one on the other. Moreover, edema and ecchymosis control are accomplished by exerting positive pressure, compressive force via the compressive force arrows 939 in the compressed core 940, which tends to resume its pre=compression shape and volume as pressure is released
For exainple, Fig. 43 shows the dressing 904 collapsed with the rayon dressing liner 942 extending beyond the polyurethane ether foam core 940 and forming a double-thickness liner perimeter 946 located within the double-folded cover perimeter 924. In this configuration any liquid exudate fTpm the incision 906 is effectively transferred by wicking action of the rayon liner 942 away.;from the incision 906 via fluid traiisfer arrows 941.
Serosanguineous fluid emissions can.be expected from an incision line for a short period, commonly a day or two, after an operation. The wicking action of the rayon liner 942, coupled with the slight ambient air, circulation admitted through the semi-permeable base ring 912, cooperate to maintain the incision 906 and the healthy skin around it relatively dry in order to avoid maceration. The pressure differential provided by components of the dressing 904 can also contribute to extraction and removal of wound exudates, in cooperation with the wicking action described above. With the dressing 904 in its compressed configuration (Fig.
43), the tubing proximal end 935 can, engage and be pushed into the transfer element 938 for direct fluid transfer therebetween.
The evacuated dressing 904 provides a number of medical incision-closure and healing benefits. The stabilizing and',fixating effects on the incision and the surrounding tissue resulting from the forces applied by the dressing 904 tend to promote contact healing, as opposed to gap healing or healirig wherein opposing edges are sliding and moving one on the other. Moreover, edema and ecchymosis control are accomplished by exerting positive pressure, compressive force via the compressive force arrows 939 in the compressed core 940, which tends to resume its pre=compression shape and volume as pressure is released
-37-within the dressing 904. Thus, the effects of restricted or controlled leakage, for example around the base ring 912, tend to be offset by the controlled expansion of the core 940. The limited air movement through the dressing 904 can be beneficial for controlling internal moisture, reducing maceration, etc:
The system 902 is adapted for adjustment and replacement as necessary in the course of closing and healing an incision. Additional air displacement can be applied via the connector 936 from automated or manual sources. Wall suction, mechanized pumps and other automated sources can be applied. Manual vacuum sources include: squeeze-type bulbs (630 in Fig. 33); (Snyder) Hemovac , evacuators available from Zimmer, Inc.
of Warsaw, Indiana; and vacuum tubes. Inspection of the incision 906 can be accomplished by making an L-shaped cut in the dressing cover., superstructure 920 and extracting or lifting the transfer assembly 938, thereby exposing the incision 906. The transfer assembly 938 can be flipped over or replaced. The dressing 904 can then be resealed by applying a replacement portion of the cover 909, whereafter the dressing 904 can be evacuated as described above. After treatment is completed, the cover s I uperstru.cture 920 can be cut away and the transfer assembly 938 can be discarded. The base ring 912 can be peeled away from the skin, or simply left in place until the adhesive 914 releases.
The stabilizing, fixating and closing forces associated with the dressing 904 tend to facilitate healing by maintaining separated tissue portions in contact with each other, and by controlling and/or eliminating lateral.movement of the tissue, which can prevent healing.
The positive pressure, compressive force components associated with the forces in the dressing 902 tend to close the tissue separation 906 and retain the opposing tissue edges in fixed contact with each other whereby healing is promoted. Various other dynamic forces tending to displace the wound edges relative to each other can be effectively resisted.
The system 902 is adapted for adjustment and replacement as necessary in the course of closing and healing an incision. Additional air displacement can be applied via the connector 936 from automated or manual sources. Wall suction, mechanized pumps and other automated sources can be applied. Manual vacuum sources include: squeeze-type bulbs (630 in Fig. 33); (Snyder) Hemovac , evacuators available from Zimmer, Inc.
of Warsaw, Indiana; and vacuum tubes. Inspection of the incision 906 can be accomplished by making an L-shaped cut in the dressing cover., superstructure 920 and extracting or lifting the transfer assembly 938, thereby exposing the incision 906. The transfer assembly 938 can be flipped over or replaced. The dressing 904 can then be resealed by applying a replacement portion of the cover 909, whereafter the dressing 904 can be evacuated as described above. After treatment is completed, the cover s I uperstru.cture 920 can be cut away and the transfer assembly 938 can be discarded. The base ring 912 can be peeled away from the skin, or simply left in place until the adhesive 914 releases.
The stabilizing, fixating and closing forces associated with the dressing 904 tend to facilitate healing by maintaining separated tissue portions in contact with each other, and by controlling and/or eliminating lateral.movement of the tissue, which can prevent healing.
The positive pressure, compressive force components associated with the forces in the dressing 902 tend to close the tissue separation 906 and retain the opposing tissue edges in fixed contact with each other whereby healing is promoted. Various other dynamic forces tending to displace the wound edges relative to each other can be effectively resisted.
-38-XIV. Alternative Embodiment External Dressings 1002, 1012 Figs. 47-49 show another alternative embodiment external dressing 1002. As shown in Fig. 47, a wound 6 can be prepared by placing optional drain strips 1004 between the wound edges and folding the strip distal ends over on the adjacent skin surface. The use of such strips is well-known. A latexversion, which is referred to as a Penrose drain, is available from Davol Inc. of Cranston, Rhode Island. A silastic version, which is referred to as a Swanson incision drain, is available from Wright Medical Technology, Inc.
of Arlington, Tennessee. Alternative deep-wound devices for extracting fluid include drain tubes, such as those described above, and other dpvices. Alternatively, such drain devices can be omitted 1o from incisions that do not require enhanced drainage. Moreover, the drain strips 1004 can be placed over a strip of liquid transfer liner, such as rayon, "veil" dressing or liner, "N-terface"
liner, etc. to increase efficiency and prevent skin maceration.
Fig. 48 shows the dressing 1002, which includes a fluid transfer component 1006 witli a reticulated foam core or block 1008 (e.g. polyurethane-ether as described above) with a surface 1009 and distal/upper and proximal/lower wicking material (e.g., rayon or other suitable wicking material) layers 1010, 1012, which can optionally be bonded to or placed loose on the core 1008. A membrane drape 1014 is placed over the fluid transfer component 1006 and releasably adhered to healthy skin adjacent to the incision 6. An elbow coupling 417 is placed over an opening 1016 forming a discharge port in the membrane drape 1014.
The coupling 417 is attached to a suction or negative pressure source, also as described above. Upon activation of the negative pressure source, fluid movement tends to be concentrated laterally (horizontally) along the bottom wicking layer 1012 towards the perimeter of the fluid transfer component 1006. The pressure differential between the fluid transfer component 1006 and the ambient atmosphere compresses the core 1008 as shown in
of Arlington, Tennessee. Alternative deep-wound devices for extracting fluid include drain tubes, such as those described above, and other dpvices. Alternatively, such drain devices can be omitted 1o from incisions that do not require enhanced drainage. Moreover, the drain strips 1004 can be placed over a strip of liquid transfer liner, such as rayon, "veil" dressing or liner, "N-terface"
liner, etc. to increase efficiency and prevent skin maceration.
Fig. 48 shows the dressing 1002, which includes a fluid transfer component 1006 witli a reticulated foam core or block 1008 (e.g. polyurethane-ether as described above) with a surface 1009 and distal/upper and proximal/lower wicking material (e.g., rayon or other suitable wicking material) layers 1010, 1012, which can optionally be bonded to or placed loose on the core 1008. A membrane drape 1014 is placed over the fluid transfer component 1006 and releasably adhered to healthy skin adjacent to the incision 6. An elbow coupling 417 is placed over an opening 1016 forming a discharge port in the membrane drape 1014.
The coupling 417 is attached to a suction or negative pressure source, also as described above. Upon activation of the negative pressure source, fluid movement tends to be concentrated laterally (horizontally) along the bottom wicking layer 1012 towards the perimeter of the fluid transfer component 1006. The pressure differential between the fluid transfer component 1006 and the ambient atmosphere compresses the core 1008 as shown in
-39-Fig. 49. For example, compression in the range of approximately 20% to 80% is feasible.
The rayon layers 1010, 1012 are thus drawn into closer proximity, particularly around the perimeter of the fluid transfer component 1006, whereby fluid transfer therebetween is facilitated. Still further, the upper rayon layer 1010 tends to draw laterally inwardly under negative pressure, whereas the lower rayon layer 1012, because of being placed on the skin, tends to retain its original shape and size. The upper rayon layer 110, which is less compressible than the foam core 1008, thus tends to deflect downwardly around its perimeter edges, further facilitating fluid flow to the upper rayon layer 1010 and to the discliarge coupling 417. The exposed perimeter edges of the core 1008 facilitate air movement into the core 1008, e.g. through the membr.ane 1014, which can comprise a semi-permeable material.
Figs. 50 and 51 show another,alternative embodiment dressing assembly 1022 with a foam core 1024 fully enclosed in awicking material (e.g. rayon or other suitable wicking material) layer 1026. Fig. 51 shows the dressing 1022 after negative suction pressure is applied, which can cause the rayon layer 1026 to buckle or bunch adjacent to the lower portions of the core perimeter edgqs, thereby providing an extended, buckled wicking material double-layer rim 1028. The rim 1028 can provide an additional interface with the patient's skin, thereby avoiding or reducing pressure-related problems such as shearing force blistering. The rim 1028 can provide another benefit in the form of enhanced airflow for the drying mode of skin maturation, which is a requirement of a long-term (three days to three weeks) postoperative dressing.
Yet another alternative embodiment dressing system comprises the use of the dressing assembly 1012 during an initial heavy exudative phase, which typically occurs approximately 48-72 hours after a surgery. The dressing 1002 can thereafter be removed and the rayon-enclosed dressing assembly 1022 applied for the long-term (typically about three days to
The rayon layers 1010, 1012 are thus drawn into closer proximity, particularly around the perimeter of the fluid transfer component 1006, whereby fluid transfer therebetween is facilitated. Still further, the upper rayon layer 1010 tends to draw laterally inwardly under negative pressure, whereas the lower rayon layer 1012, because of being placed on the skin, tends to retain its original shape and size. The upper rayon layer 110, which is less compressible than the foam core 1008, thus tends to deflect downwardly around its perimeter edges, further facilitating fluid flow to the upper rayon layer 1010 and to the discliarge coupling 417. The exposed perimeter edges of the core 1008 facilitate air movement into the core 1008, e.g. through the membr.ane 1014, which can comprise a semi-permeable material.
Figs. 50 and 51 show another,alternative embodiment dressing assembly 1022 with a foam core 1024 fully enclosed in awicking material (e.g. rayon or other suitable wicking material) layer 1026. Fig. 51 shows the dressing 1022 after negative suction pressure is applied, which can cause the rayon layer 1026 to buckle or bunch adjacent to the lower portions of the core perimeter edgqs, thereby providing an extended, buckled wicking material double-layer rim 1028. The rim 1028 can provide an additional interface with the patient's skin, thereby avoiding or reducing pressure-related problems such as shearing force blistering. The rim 1028 can provide another benefit in the form of enhanced airflow for the drying mode of skin maturation, which is a requirement of a long-term (three days to three weeks) postoperative dressing.
Yet another alternative embodiment dressing system comprises the use of the dressing assembly 1012 during an initial heavy exudative phase, which typically occurs approximately 48-72 hours after a surgery. The dressing 1002 can thereafter be removed and the rayon-enclosed dressing assembly 1022 applied for the long-term (typically about three days to
-40-three weeks) postoperative transudative phase. Alternatively, a rayon wicking material layer alone can be applied to continue wicking-assisted fluid drainage of transudate. The tissues are thus stabilized for critical early collagen strength gain and for removing transudate, thereby allowing for "sealing" of the incision 6 and the drain sites, and promoting drying the skin surface.
Fig. 52 shows yet another embodiment of the wound dressing 1032 with a sensor 1034 in communication with the dressing 1032 and providing an input signal to a controller 1036, which can include a feedback loop 1038 for controlling various operating parameters of a system including the wound dressing 1032. For example, hemoglobin levels can be monitored, as well as pressures, fluid flows, temperatures, patient conditions and various exudate and transudate characteristics.
Fig. 53 shows an experimental model 1042 of the dressing, which is oriented vertically to model fluid flow in the system. The fluid tends to be present in the areas which are shown at the bottom 44 and along the sides 46, 48 of the reticulated polyurethane foam core 1050 and define a fluid transfer zone 1051. An air entrapment zone 1052, i.e. top and center of the foam core 1050, tends to trap air whereby the fluid tends to be drawn towards the outside edges. The polyurethasieether reticulated foam material thus tends to trap air interiorly and move liquid exteriorty. In this configuration, the break point for the ability to move liquid to the discharge elbow 417 occurs at a liquid volume equal to approximately 10% of the.volume of the non-compressed foam core 1050. Liquid absorption in the reticulated foam can be enhanced by coating its passages with protein.
Table I shows the compression effect of the reticulated polyurethane ether foam material under various negative pressure levels.
TABLE I
Fig. 52 shows yet another embodiment of the wound dressing 1032 with a sensor 1034 in communication with the dressing 1032 and providing an input signal to a controller 1036, which can include a feedback loop 1038 for controlling various operating parameters of a system including the wound dressing 1032. For example, hemoglobin levels can be monitored, as well as pressures, fluid flows, temperatures, patient conditions and various exudate and transudate characteristics.
Fig. 53 shows an experimental model 1042 of the dressing, which is oriented vertically to model fluid flow in the system. The fluid tends to be present in the areas which are shown at the bottom 44 and along the sides 46, 48 of the reticulated polyurethane foam core 1050 and define a fluid transfer zone 1051. An air entrapment zone 1052, i.e. top and center of the foam core 1050, tends to trap air whereby the fluid tends to be drawn towards the outside edges. The polyurethasieether reticulated foam material thus tends to trap air interiorly and move liquid exteriorty. In this configuration, the break point for the ability to move liquid to the discharge elbow 417 occurs at a liquid volume equal to approximately 10% of the.volume of the non-compressed foam core 1050. Liquid absorption in the reticulated foam can be enhanced by coating its passages with protein.
Table I shows the compression effect of the reticulated polyurethane ether foam material under various negative pressure levels.
TABLE I
-41-COMPRESSION EFFECT
VOLU.ME (CC) % COMPRESSION
FOAM BLOCK (DRY) 283.34 15 WITH FILM DRAPE 258.91 68 WITH 50 mm Hg VAC 58.94 73 100 mm 49.96 73 150 42.41 77 BACK TO 100 47.71 74 AIR RE-EQUILIBRA.TION 133.95 28 Fig. 54 shows the total wetted surface area of the reticulated polyurethane foam as a function of total liquid volume added at different pressures, with both uncoated and protein-coated foam conditions.
Fig. 55 shows an active, positive pressure hemostat 1062 comprising an alternative embodiment of the present invention and including a patient interface 1064 with a transfer component 1066 for placement against a patient and an overdrape 1068 placed thereover and fastened to the surrounding skin. The transfer component 1066 can include an optional liner or cover 1070 for direct engagement with the patient's skin if the material comprising a core 1069 is incompatible with direct skin contact. The transfer component 1066 communicates with a pressure source 1067 via an elbow coupling 417 over an opening or discharge port 1072 in the overdrape 1068. Applying negative pressure to the transfer component 1066 results in a positive pressure being applied to the patient's skin via the transfer component 1066. The hemostat 1062 is adapted for providing localized compression to speed resorption
VOLU.ME (CC) % COMPRESSION
FOAM BLOCK (DRY) 283.34 15 WITH FILM DRAPE 258.91 68 WITH 50 mm Hg VAC 58.94 73 100 mm 49.96 73 150 42.41 77 BACK TO 100 47.71 74 AIR RE-EQUILIBRA.TION 133.95 28 Fig. 54 shows the total wetted surface area of the reticulated polyurethane foam as a function of total liquid volume added at different pressures, with both uncoated and protein-coated foam conditions.
Fig. 55 shows an active, positive pressure hemostat 1062 comprising an alternative embodiment of the present invention and including a patient interface 1064 with a transfer component 1066 for placement against a patient and an overdrape 1068 placed thereover and fastened to the surrounding skin. The transfer component 1066 can include an optional liner or cover 1070 for direct engagement with the patient's skin if the material comprising a core 1069 is incompatible with direct skin contact. The transfer component 1066 communicates with a pressure source 1067 via an elbow coupling 417 over an opening or discharge port 1072 in the overdrape 1068. Applying negative pressure to the transfer component 1066 results in a positive pressure being applied to the patient's skin via the transfer component 1066. The hemostat 1062 is adapted for providing localized compression to speed resorption
42 PCT/US2006/038855 of free fluid edema. Applications can include subdermal hemorrhages (e.g.
1074) and free edema resorption in body cavities, internal organs and joints. Other applications can also utilize the active pressure hemostasis device 1062, including poultice-type applications for enhancing absorption of surface-applied pharmaceuticals. As shown, the sensor 1034 and the controller 1036 can monitor various operating parameters for providing automated control, particularly in connection with varying positive pressures exerted by the transfer component 1066. For example, visible, thermal and infrared indications of subdermal conditions can be detected by the sensor 1034, which outputs corresponding signals for input to the controller 1036. Pressure can be cycled as appropriate, and terminated upon certain predetermined conditions being achieved, e.g. resorption of the free edema corresponding to achieving the treatment objectives.
It is to be understood that while certain embodiments and/or aspects of the invention have been shown and described, the invention is not limited thereto and encompasses various other embodiments and aspects. For example, various other suitable materials can be used in place of those described above. Configurations can also be adapted as needed to accommodate particular applications. Still further, various control systems can be provided and preprogrammed to automatically respond appropriately to different operating conditions.
Still further, the systems and methods described above can be combined with various other treatment protocols, pharmaceuticals and devices.
1074) and free edema resorption in body cavities, internal organs and joints. Other applications can also utilize the active pressure hemostasis device 1062, including poultice-type applications for enhancing absorption of surface-applied pharmaceuticals. As shown, the sensor 1034 and the controller 1036 can monitor various operating parameters for providing automated control, particularly in connection with varying positive pressures exerted by the transfer component 1066. For example, visible, thermal and infrared indications of subdermal conditions can be detected by the sensor 1034, which outputs corresponding signals for input to the controller 1036. Pressure can be cycled as appropriate, and terminated upon certain predetermined conditions being achieved, e.g. resorption of the free edema corresponding to achieving the treatment objectives.
It is to be understood that while certain embodiments and/or aspects of the invention have been shown and described, the invention is not limited thereto and encompasses various other embodiments and aspects. For example, various other suitable materials can be used in place of those described above. Configurations can also be adapted as needed to accommodate particular applications. Still further, various control systems can be provided and preprogrammed to automatically respond appropriately to different operating conditions.
Still further, the systems and methods described above can be combined with various other treatment protocols, pharmaceuticals and devices.
Claims (19)
1. A dressing assembly for a wound or incision, which comprises:
an external patient interface including an external fluid transfer component, said fluid transfer component being adapted for transferring fluid from the wound or incision;
said external patient interface including an overdrape placed over said fluid transfer component in contact with a surrounding skin surface; and said fluid transfer component including a porous core with a surface and a wicking material layer engaging same.
an external patient interface including an external fluid transfer component, said fluid transfer component being adapted for transferring fluid from the wound or incision;
said external patient interface including an overdrape placed over said fluid transfer component in contact with a surrounding skin surface; and said fluid transfer component including a porous core with a surface and a wicking material layer engaging same.
2. The dressing assembly according to claim 1, which includes:
said overdrape having an opening to said fluid transfer component; and said opening forming a discharge port for discharging fluid from said dressing assembly.
said overdrape having an opening to said fluid transfer component; and said opening forming a discharge port for discharging fluid from said dressing assembly.
3. The dressing assembly according to claim 1, which includes:
an internal fluid transfer component located in said wound or incision in fluidic communication with said external fluid transfer component.
an internal fluid transfer component located in said wound or incision in fluidic communication with said external fluid transfer component.
4. The dressing assembly according to claim 3 wherein said internal fluid transfer component comprises a drain strip with an internal portion located within said wound or incision and an external portion located externally thereto.
5. The dressing assembly according to claim 4, which includes:
multiple said drain strips each comprising a flat, flexible material; and each said drain strip external portion being folded over the skin surface adjacent to said wound or incision.
multiple said drain strips each comprising a flat, flexible material; and each said drain strip external portion being folded over the skin surface adjacent to said wound or incision.
6. The dressing assembly according to claim 2, which includes:
said core including proximal and distal surfaces and a perimeter edge extending therebetween;
said wicking material layer comprising a proximal wicking material layer engaging said core proximal surface and adapted for overlying said wound or incision;
and a distal wicking material layer engaging said core distal surface and said overdrape.
said core including proximal and distal surfaces and a perimeter edge extending therebetween;
said wicking material layer comprising a proximal wicking material layer engaging said core proximal surface and adapted for overlying said wound or incision;
and a distal wicking material layer engaging said core distal surface and said overdrape.
7. The dressing assembly according to claim 2 wherein said core comprises a reticulated, compressible foam material chosen from among the group comprising polyurethane ether (PUE) and polyvinyl acetate (PVA).
8. The dressing assembly according to claim 2 wherein said wicking material comprises rayon.
9. The dressing assembly according to claim 1, which includes a pressure source connected to said fluid transfer component.
10. The dressing assembly according to claim 9, which includes:
a fluid port mounted on said overdrape and connected to said pressure source.
a fluid port mounted on said overdrape and connected to said pressure source.
11. The dressing assembly according to claim 9 wherein said pressure source comprises a manually-operated vacuum-type device.
12. The dressing assembly according to claim 1, which includes:
a wicking material cover enclosing said core and including said wicking material layer;
said cover including a perimeter edge;
said fluid transfer component having compressed and uncompressed configurations;
and said wicking material edge buckling and forming a laterally-projecting rim with said fluid transfer component in its compressed configuration.
a wicking material cover enclosing said core and including said wicking material layer;
said cover including a perimeter edge;
said fluid transfer component having compressed and uncompressed configurations;
and said wicking material edge buckling and forming a laterally-projecting rim with said fluid transfer component in its compressed configuration.
13. The dressing assembly according to claim 2, which includes:
said core forming an air-entrapment interior zone with the application of negative pressure thereto;
said core forming a fluid transfer zone at its outer surface and adjacent to said wicking material cover; and said fluid transfer zone being adapted for directing fluid from said wound or incision to said discharge port.
said core forming an air-entrapment interior zone with the application of negative pressure thereto;
said core forming a fluid transfer zone at its outer surface and adjacent to said wicking material cover; and said fluid transfer zone being adapted for directing fluid from said wound or incision to said discharge port.
14. The dressing assembly according to claim 9, which includes:
a sensor connected to said fluid transfer component and adapted for sensing a characteristic thereof and providing an output signal corresponding to said characteristic;
a controller connected to said sensor and receiving input signals therefrom and providing an output signal to said pressure source; and a feedback loop connected to said controller output and to said controller for providing a feedback signal corresponding to said controller output and inputting same to said controller.
a sensor connected to said fluid transfer component and adapted for sensing a characteristic thereof and providing an output signal corresponding to said characteristic;
a controller connected to said sensor and receiving input signals therefrom and providing an output signal to said pressure source; and a feedback loop connected to said controller output and to said controller for providing a feedback signal corresponding to said controller output and inputting same to said controller.
15. A dressing assembly for a wound or incision, which comprises:
an external patient interface including an external fluid transfer component, said fluid transfer component being adapted for transferring fluid from the wound or incision;
said external patient interface including an overdrape placed over said fluid transfer component in contact with a surrounding skin surface;
said fluid transfer component including a porous core with a surface;
said overdrape having an opening to said fluid transfer component;
said opening forming a discharge port for discharging fluid from said dressing assembly;
an internal fluid transfer component located in said wound or incision in fluidic communication with said external fluid transfer component and comprising multiple drain strips each having an internal portion located within said wound or incision and an external portion located externally thereto;
said drain strips each comprising a flat, flexible material;
each said drain strip external portion being folded over the skin surface adjacent to said wound or incision;
a pressure source connected to said fluid transfer component;
a wicking material cover enclosing said core and including a perimeter edge;
said fluid transfer component having compressed and uncompressed configurations;
said wicking material edge buckling and forming a laterally-projecting rim with said fluid transfer component in its compressed configuration;
said core forming an air-entrapment interior zone with the application of negative pressure thereto;
said core forming a fluid transfer zone at its outer surface and adjacent to said wicking material cover; and said fluid transfer zone being adapted for directing fluid from said wound or incision to said discharge port;
a sensor connected to said fluid transfer component and adapted for sensing a characteristic thereof and providing an output signal corresponding to said characteristic;
a controller connected to said sensor and receiving input signals therefrom and providing an output signal to said pressure source; and a feedback loop connected to said controller output and to said controller for providing a feedback signal corresponding to said controller output and inputting same to said controller.
an external patient interface including an external fluid transfer component, said fluid transfer component being adapted for transferring fluid from the wound or incision;
said external patient interface including an overdrape placed over said fluid transfer component in contact with a surrounding skin surface;
said fluid transfer component including a porous core with a surface;
said overdrape having an opening to said fluid transfer component;
said opening forming a discharge port for discharging fluid from said dressing assembly;
an internal fluid transfer component located in said wound or incision in fluidic communication with said external fluid transfer component and comprising multiple drain strips each having an internal portion located within said wound or incision and an external portion located externally thereto;
said drain strips each comprising a flat, flexible material;
each said drain strip external portion being folded over the skin surface adjacent to said wound or incision;
a pressure source connected to said fluid transfer component;
a wicking material cover enclosing said core and including a perimeter edge;
said fluid transfer component having compressed and uncompressed configurations;
said wicking material edge buckling and forming a laterally-projecting rim with said fluid transfer component in its compressed configuration;
said core forming an air-entrapment interior zone with the application of negative pressure thereto;
said core forming a fluid transfer zone at its outer surface and adjacent to said wicking material cover; and said fluid transfer zone being adapted for directing fluid from said wound or incision to said discharge port;
a sensor connected to said fluid transfer component and adapted for sensing a characteristic thereof and providing an output signal corresponding to said characteristic;
a controller connected to said sensor and receiving input signals therefrom and providing an output signal to said pressure source; and a feedback loop connected to said controller output and to said controller for providing a feedback signal corresponding to said controller output and inputting same to said controller.
16. A method for treating a wound or incision externally, which comprises the steps of:
providing an external patient interface including an external fluid transfer component;
placing said external patient interface on a patient over the wound or incision;
providing an overdrape and placing same over said fluid transfer component in contact with a surrounding skin surface;
providing said fluid transfer component with a porous core including a surface and a wicking material layer engaging same; and transferring fluid from the wound or incision to the fluid transfer component.
providing an external patient interface including an external fluid transfer component;
placing said external patient interface on a patient over the wound or incision;
providing an overdrape and placing same over said fluid transfer component in contact with a surrounding skin surface;
providing said fluid transfer component with a porous core including a surface and a wicking material layer engaging same; and transferring fluid from the wound or incision to the fluid transfer component.
17. A hemostat, which comprises:
an external patient interface including an external transfer component;
said external patient interface including an overdrape placed over said transfer component in contact with a surrounding skin surface and including a port;
said transfer component including a porous core with a surface; and a pressure source connected to said fluid transfer component via said port.
an external patient interface including an external transfer component;
said external patient interface including an overdrape placed over said transfer component in contact with a surrounding skin surface and including a port;
said transfer component including a porous core with a surface; and a pressure source connected to said fluid transfer component via said port.
18. The hemostat according to claim 16, which includes:
a sensor connected to said transfer component and adapted for sensing a characteristic thereof and providing an output signal corresponding to said characteristic;
a controller connected to said sensor and receiving input signals therefrom and providing an output signal to said pressure source; and a feedback loop connected to said controller output and to said controller for providing a feedback signal corresponding to said controller output and inputting same to said controller.
a sensor connected to said transfer component and adapted for sensing a characteristic thereof and providing an output signal corresponding to said characteristic;
a controller connected to said sensor and receiving input signals therefrom and providing an output signal to said pressure source; and a feedback loop connected to said controller output and to said controller for providing a feedback signal corresponding to said controller output and inputting same to said controller.
19. A hemostasis method, which comprises the steps of:
providing an external patient interface including an external transfer component;
applying said transfer component to a patient;
providing said external patient interface with an overdrape and placing same over said transfer component in contact with a surrounding skin surface;
providing said overdrape with a port;
providing said transfer component with a porous core including a surface;
providing a pressure source;
connecting said pressure source to said fluid transfer component via said port; and applying a subdermal hemostatic pressure to said patient via said patient interface.
providing an external patient interface including an external transfer component;
applying said transfer component to a patient;
providing said external patient interface with an overdrape and placing same over said transfer component in contact with a surrounding skin surface;
providing said overdrape with a port;
providing said transfer component with a porous core including a surface;
providing a pressure source;
connecting said pressure source to said fluid transfer component via said port; and applying a subdermal hemostatic pressure to said patient via said patient interface.
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US6458109B1 (en) | 1998-08-07 | 2002-10-01 | Hill-Rom Services, Inc. | Wound treatment apparatus |
AU774512B2 (en) | 1999-04-02 | 2004-07-01 | Kci Licensing, Inc. | Vacuum assisted closure system with heating and cooling provision |
US6695823B1 (en) | 1999-04-09 | 2004-02-24 | Kci Licensing, Inc. | Wound therapy device |
GB9909301D0 (en) | 1999-04-22 | 1999-06-16 | Kci Medical Ltd | Wound treatment apparatus employing reduced pressure |
GB9926538D0 (en) | 1999-11-09 | 2000-01-12 | Kci Medical Ltd | Multi-lumen connector |
US6824533B2 (en) | 2000-11-29 | 2004-11-30 | Hill-Rom Services, Inc. | Wound treatment apparatus |
US6764462B2 (en) | 2000-11-29 | 2004-07-20 | Hill-Rom Services Inc. | Wound treatment apparatus |
GB0011202D0 (en) | 2000-05-09 | 2000-06-28 | Kci Licensing Inc | Abdominal wound dressing |
CA2409907A1 (en) | 2000-05-22 | 2001-11-29 | Arthur C. Coffey | Combination sis and vacuum bandage and method |
US6685681B2 (en) | 2000-11-29 | 2004-02-03 | Hill-Rom Services, Inc. | Vacuum therapy and cleansing dressing for wounds |
US6855135B2 (en) | 2000-11-29 | 2005-02-15 | Hill-Rom Services, Inc. | Vacuum therapy and cleansing dressing for wounds |
US7666192B2 (en) | 2001-02-16 | 2010-02-23 | Kci Licensing, Inc. | Skin grafting devices and methods |
US7004915B2 (en) | 2001-08-24 | 2006-02-28 | Kci Licensing, Inc. | Negative pressure assisted tissue treatment system |
CA2462877A1 (en) | 2001-10-11 | 2003-04-17 | Hill-Rom Services, Inc. | Waste container for negative pressure therapy |
CA2468912A1 (en) | 2001-12-26 | 2003-07-17 | Hill-Rom Services, Inc. | Vented vacuum bandage and method |
AU2002359830A1 (en) | 2001-12-26 | 2003-07-24 | Hill-Rom Services, Inc. | Wound vacuum therapy dressing kit |
ATE387919T1 (en) | 2001-12-26 | 2008-03-15 | Hill Rom Services Inc | VACUUM BAND PACKAGING |
US8168848B2 (en) | 2002-04-10 | 2012-05-01 | KCI Medical Resources, Inc. | Access openings in vacuum bandage |
CA2495385A1 (en) | 2002-08-21 | 2004-03-04 | Hill-Rom Services, Inc. | Wound packing for preventing wound closure |
US7846141B2 (en) | 2002-09-03 | 2010-12-07 | Bluesky Medical Group Incorporated | Reduced pressure treatment system |
GB0224986D0 (en) | 2002-10-28 | 2002-12-04 | Smith & Nephew | Apparatus |
US10363344B2 (en) | 2002-12-31 | 2019-07-30 | Kci Licensing, Inc. | Externally-applied patient interface system and method with a controlled region for implanted or buried bio-reactor |
US7976519B2 (en) * | 2002-12-31 | 2011-07-12 | Kci Licensing, Inc. | Externally-applied patient interface system and method |
US7942866B2 (en) * | 2003-08-28 | 2011-05-17 | Boehringer Technologies, L.P. | Device for treating a wound |
GB0325129D0 (en) | 2003-10-28 | 2003-12-03 | Smith & Nephew | Apparatus in situ |
GB0325126D0 (en) | 2003-10-28 | 2003-12-03 | Smith & Nephew | Apparatus with heat |
US11298453B2 (en) | 2003-10-28 | 2022-04-12 | Smith & Nephew Plc | Apparatus and method for wound cleansing with actives |
US7776028B2 (en) | 2004-04-05 | 2010-08-17 | Bluesky Medical Group Incorporated | Adjustable overlay reduced pressure wound treatment system |
US8062272B2 (en) | 2004-05-21 | 2011-11-22 | Bluesky Medical Group Incorporated | Flexible reduced pressure treatment appliance |
US10058642B2 (en) | 2004-04-05 | 2018-08-28 | Bluesky Medical Group Incorporated | Reduced pressure treatment system |
US7909805B2 (en) | 2004-04-05 | 2011-03-22 | Bluesky Medical Group Incorporated | Flexible reduced pressure treatment appliance |
US7708724B2 (en) | 2004-04-05 | 2010-05-04 | Blue Sky Medical Group Incorporated | Reduced pressure wound cupping treatment system |
US10413644B2 (en) | 2004-04-27 | 2019-09-17 | Smith & Nephew Plc | Wound treatment apparatus and method |
US8529548B2 (en) | 2004-04-27 | 2013-09-10 | Smith & Nephew Plc | Wound treatment apparatus and method |
US7753894B2 (en) | 2004-04-27 | 2010-07-13 | Smith & Nephew Plc | Wound cleansing apparatus with stress |
GB0409446D0 (en) | 2004-04-28 | 2004-06-02 | Smith & Nephew | Apparatus |
US7857806B2 (en) | 2005-07-14 | 2010-12-28 | Boehringer Technologies, L.P. | Pump system for negative pressure wound therapy |
CN101257875A (en) | 2005-09-06 | 2008-09-03 | 泰科保健集团有限合伙公司 | Self contained wound dressing with micropump |
MX2008002880A (en) | 2005-09-07 | 2008-03-27 | Tyco Healthcare | Self contained wound dressing apparatus. |
JP2009506877A (en) | 2005-09-07 | 2009-02-19 | タイコ ヘルスケア グループ リミテッド パートナーシップ | Wound dressing with vacuum reservoir |
EP3040091B1 (en) | 2006-02-06 | 2018-06-13 | KCI Licensing, Inc. | Systems for improved connection to wound dressings in conjunction with reduced pressure wound treatment systems |
US7854754B2 (en) | 2006-02-22 | 2010-12-21 | Zeltiq Aesthetics, Inc. | Cooling device for removing heat from subcutaneous lipid-rich cells |
US20070219585A1 (en) | 2006-03-14 | 2007-09-20 | Cornet Douglas A | System for administering reduced pressure treatment having a manifold with a primary flow passage and a blockage prevention member |
CN103948468A (en) * | 2006-04-28 | 2014-07-30 | 斯尔替克美学股份有限公司 | Cryoprotectant for use with a treatment device for improved cooling of subcutaneous lipid-rich cells |
US7779625B2 (en) | 2006-05-11 | 2010-08-24 | Kalypto Medical, Inc. | Device and method for wound therapy |
US20070270925A1 (en) * | 2006-05-17 | 2007-11-22 | Juniper Medical, Inc. | Method and apparatus for non-invasively removing heat from subcutaneous lipid-rich cells including a coolant having a phase transition temperature |
US7699831B2 (en) * | 2006-06-02 | 2010-04-20 | Surgical Design Solutions, Llc | Assemblies, systems, and methods for vacuum assisted internal drainage during wound healing |
WO2007142688A1 (en) | 2006-06-02 | 2007-12-13 | Bengtson Bradley P | Assemblies, systems, and methods for vacuum assisted internal drainage during wound healing |
US8551075B2 (en) | 2006-06-02 | 2013-10-08 | Kci Medical Resources | Assemblies, systems, and methods for vacuum assisted internal drainage during wound healing |
US7876546B2 (en) | 2006-09-19 | 2011-01-25 | Kci Licensing Inc. | Component module for a reduced pressure treatment system |
WO2008036361A2 (en) | 2006-09-19 | 2008-03-27 | Kci Licensing Inc. | Reduced pressure treatment system having blockage clearing and dual-zone pressure protection capabilities |
US8366690B2 (en) | 2006-09-19 | 2013-02-05 | Kci Licensing, Inc. | System and method for determining a fill status of a canister of fluid in a reduced pressure treatment system |
US9132031B2 (en) * | 2006-09-26 | 2015-09-15 | Zeltiq Aesthetics, Inc. | Cooling device having a plurality of controllable cooling elements to provide a predetermined cooling profile |
US9820888B2 (en) | 2006-09-26 | 2017-11-21 | Smith & Nephew, Inc. | Wound dressing |
US8192474B2 (en) | 2006-09-26 | 2012-06-05 | Zeltiq Aesthetics, Inc. | Tissue treatment methods |
AU2014200853B2 (en) * | 2006-09-28 | 2016-07-07 | Smith & Nephew Inc. | Portable wound therapy system |
ATE456383T1 (en) | 2006-09-28 | 2010-02-15 | Tyco Healthcare | PORTABLE WOUND THERAPY SYSTEM |
WO2008048527A2 (en) | 2006-10-13 | 2008-04-24 | Kci Licensing Inc. | Reduced pressure delivery system having a manually-activated pump for providing treatment to low-severity wounds |
US7967810B2 (en) | 2006-10-20 | 2011-06-28 | Mary Beth Kelley | Sub-atmospheric wound-care system |
JP2010508130A (en) * | 2006-10-31 | 2010-03-18 | ゼルティック エステティックス インコーポレイテッド | Method and apparatus for cooling subcutaneous high lipid cells or subcutaneous high lipid tissue |
US7931651B2 (en) | 2006-11-17 | 2011-04-26 | Wake Lake University Health Sciences | External fixation assembly and method of use |
US8377016B2 (en) | 2007-01-10 | 2013-02-19 | Wake Forest University Health Sciences | Apparatus and method for wound treatment employing periodic sub-atmospheric pressure |
US7758476B2 (en) * | 2007-02-06 | 2010-07-20 | Fitness Botics | Inflatable cushion bag for striking |
RU2453298C2 (en) | 2007-02-09 | 2012-06-20 | КейСиАй Лайсензинг Инк. | Air-permeable interface system for local low pressure |
WO2008100438A1 (en) | 2007-02-09 | 2008-08-21 | Kci Licensing Inc. | System and method for applying reduced pressure at a tissue site |
CN101616700B (en) | 2007-02-20 | 2013-02-13 | 凯希特许有限公司 | System and method for distingushing leaks from a disengaged canister condition in a redued pressure treatment system |
WO2008142580A2 (en) * | 2007-03-16 | 2008-11-27 | Wolfe Tory Medical, Inc. | Temporary surgical closure for a body cavity |
DE102008020553A1 (en) * | 2007-04-29 | 2008-10-30 | Iskia Gmbh & Co.Kg | Flat drainage for wound treatment |
US20080287839A1 (en) * | 2007-05-18 | 2008-11-20 | Juniper Medical, Inc. | Method of enhanced removal of heat from subcutaneous lipid-rich cells and treatment apparatus having an actuator |
MX2009013767A (en) | 2007-06-29 | 2010-01-26 | Kci Licensing Inc | Activation of bone and cartilage formation. |
US7790946B2 (en) * | 2007-07-06 | 2010-09-07 | Tyco Healthcare Group Lp | Subatmospheric pressure wound therapy dressing |
US20090018624A1 (en) * | 2007-07-13 | 2009-01-15 | Juniper Medical, Inc. | Limiting use of disposable system patient protection devices |
US20090018625A1 (en) * | 2007-07-13 | 2009-01-15 | Juniper Medical, Inc. | Managing system temperature to remove heat from lipid-rich regions |
US20090018626A1 (en) * | 2007-07-13 | 2009-01-15 | Juniper Medical, Inc. | User interfaces for a system that removes heat from lipid-rich regions |
US20090018627A1 (en) * | 2007-07-13 | 2009-01-15 | Juniper Medical, Inc. | Secure systems for removing heat from lipid-rich regions |
US8523927B2 (en) * | 2007-07-13 | 2013-09-03 | Zeltiq Aesthetics, Inc. | System for treating lipid-rich regions |
JP5394383B2 (en) | 2007-08-21 | 2014-01-22 | ケーシーアイ ライセンシング インコーポレイテッド | Pressure reducing system and method using a gasket |
JP5474791B2 (en) | 2007-08-21 | 2014-04-16 | ゼルティック エステティックス インコーポレイテッド | Monitoring of cooling of subcutaneous lipid-rich cells such as cooling of adipose tissue |
EP2205189B1 (en) | 2007-10-10 | 2017-12-06 | Wake Forest University Health Sciences | Devices for treating spinal cord tissue |
US8246590B2 (en) | 2007-10-11 | 2012-08-21 | Spiracur, Inc. | Closed incision negative pressure wound therapy device and methods of use |
NZ584897A (en) * | 2007-10-18 | 2013-01-25 | Convatec Technologies Inc | Incontinence device including gasket and bulged cover |
EP2222261B1 (en) * | 2007-11-13 | 2018-05-09 | Medela Holding AG | Wound drainage covering |
WO2009067711A2 (en) | 2007-11-21 | 2009-05-28 | T.J. Smith & Nephew, Limited | Suction device and dressing |
ES2776709T3 (en) | 2007-11-21 | 2020-07-31 | Smith & Nephew | Wound dressing |
GB0722820D0 (en) | 2007-11-21 | 2008-01-02 | Smith & Nephew | Vacuum assisted wound dressing |
AU2008327660B2 (en) | 2007-11-21 | 2014-02-13 | Smith & Nephew Plc | Wound dressing |
GB0723872D0 (en) | 2007-12-06 | 2008-01-16 | Smith & Nephew | Apparatus for topical negative pressure therapy |
GB2455962A (en) | 2007-12-24 | 2009-07-01 | Ethicon Inc | Reinforced adhesive backing sheet, for plaster |
AU2009204140B9 (en) | 2008-01-08 | 2014-03-13 | Smith & Nephew Plc | Sustained variable negative pressure wound treatment and method of controlling same |
CN102014980B (en) | 2008-01-09 | 2014-04-09 | 韦克福里斯特大学健康科学院 | Device and method for treating central nervous system pathology |
AU2009222109B2 (en) | 2008-02-29 | 2013-02-21 | Solventum Intellectual Properties Company | A system and method for collecting exudates |
US8372050B2 (en) | 2008-03-05 | 2013-02-12 | Kci Licensing, Inc. | Dressing and method for applying reduced pressure to and collecting and storing fluid from a tissue site |
US8298200B2 (en) | 2009-06-01 | 2012-10-30 | Tyco Healthcare Group Lp | System for providing continual drainage in negative pressure wound therapy |
US8021347B2 (en) | 2008-07-21 | 2011-09-20 | Tyco Healthcare Group Lp | Thin film wound dressing |
US9033942B2 (en) * | 2008-03-07 | 2015-05-19 | Smith & Nephew, Inc. | Wound dressing port and associated wound dressing |
WO2009114624A2 (en) | 2008-03-12 | 2009-09-17 | Bluesky Medical Group Inc. | Negative pressure dressing and method of using same |
US9199012B2 (en) | 2008-03-13 | 2015-12-01 | Smith & Nephew, Inc. | Shear resistant wound dressing for use in vacuum wound therapy |
GB0804654D0 (en) | 2008-03-13 | 2008-04-16 | Smith & Nephew | Vacuum closure device |
EP2687244B2 (en) | 2008-05-02 | 2019-10-30 | KCI Licensing, Inc. | Manually-actuated reduced pressure pump having regulated pressure capabilities |
DE102008022608A1 (en) * | 2008-05-05 | 2009-11-12 | Otto-von-Guericke Universität Medizinische Fakultät | Drainage device for the areal removal of wound exudate and other body fluids |
US7825289B2 (en) * | 2008-05-16 | 2010-11-02 | Tyco Healthcare Group Lp | Wound dressing adhesive compression device |
US8177763B2 (en) | 2008-09-05 | 2012-05-15 | Tyco Healthcare Group Lp | Canister membrane for wound therapy system |
US8048046B2 (en) | 2008-05-21 | 2011-11-01 | Tyco Healthcare Group Lp | Wound therapy system with housing and canister support |
US10912869B2 (en) | 2008-05-21 | 2021-02-09 | Smith & Nephew, Inc. | Wound therapy system with related methods therefor |
US8007481B2 (en) | 2008-07-17 | 2011-08-30 | Tyco Healthcare Group Lp | Subatmospheric pressure mechanism for wound therapy system |
AU2016208311B2 (en) * | 2008-05-30 | 2017-12-14 | Solventum Intellectual Properties Company | Reduced-pressure dressing assemblies for use in applying a closing force |
AU2013257419B2 (en) * | 2008-05-30 | 2015-08-20 | Solventum Intellectual Properties Company | Super-absorbent, reduced-pressure wound dressing and systems |
EP3115034B1 (en) * | 2008-05-30 | 2020-05-06 | KCI Licensing, Inc. | Reduced-pressure, linear wound closing bolsters and systems |
CN102046216B (en) * | 2008-05-30 | 2014-05-21 | 凯希特许有限公司 | Anisotropic drapes and systems |
EP2829287B1 (en) * | 2008-05-30 | 2019-07-03 | KCI Licensing, Inc. | Reduced-pressure, linear-wound treatment system |
BRPI0909536A2 (en) | 2008-06-04 | 2019-03-06 | Kci Licensing Inc. | "method for detecting infection in a wound caused by an infecting organism at a wound site, system detecting an infection in a wound in a wound region, porous pad adapted to distribute reduced pressure to a wound region and system use" |
KR20110025981A (en) | 2008-06-25 | 2011-03-14 | 케이씨아이 라이센싱 인코포레이티드 | Absorbable, reduced-pressure manifolds and systems |
US8257326B2 (en) * | 2008-06-30 | 2012-09-04 | Tyco Healthcare Group Lp | Apparatus for enhancing wound healing |
AU2009268997B2 (en) * | 2008-07-08 | 2015-04-02 | Smith & Nephew Inc. | Portable negative pressure wound therapy device |
EP2340063B1 (en) | 2008-07-11 | 2015-08-19 | KCI Licensing, Inc. | Manually-actuated, reduced-pressure systems for treating wounds |
EP2313008B1 (en) | 2008-07-18 | 2017-04-12 | Wake Forest University Health Sciences | Apparatus for cardiac tissue modulation by topical application of vacuum to minimize cell death and damage |
US20100022990A1 (en) * | 2008-07-25 | 2010-01-28 | Boehringer Technologies, L.P. | Pump system for negative pressure wound therapy and improvements thereon |
HUE037556T2 (en) * | 2008-08-08 | 2018-09-28 | Smith & Nephew Inc | Wound dressing of continuous fibers |
EP2992912B1 (en) | 2008-08-08 | 2017-11-22 | KCI Licensing, Inc. | Reduced-pressure treatment systems with reservoir control |
US8251979B2 (en) | 2009-05-11 | 2012-08-28 | Tyco Healthcare Group Lp | Orientation independent canister for a negative pressure wound therapy device |
US8216198B2 (en) | 2009-01-09 | 2012-07-10 | Tyco Healthcare Group Lp | Canister for receiving wound exudate in a negative pressure therapy system |
US8827983B2 (en) | 2008-08-21 | 2014-09-09 | Smith & Nephew, Inc. | Sensor with electrical contact protection for use in fluid collection canister and negative pressure wound therapy systems including same |
US9414968B2 (en) | 2008-09-05 | 2016-08-16 | Smith & Nephew, Inc. | Three-dimensional porous film contact layer with improved wound healing |
MX2011002863A (en) * | 2008-09-18 | 2011-04-26 | Kci Licensing Inc | Systems and methods for controlling inflammatory response. |
US8419696B2 (en) | 2008-09-18 | 2013-04-16 | Kci Licensing, Inc. | System and method for delivering reduced pressure to subcutaneous tissue |
CA2735016C (en) | 2008-09-18 | 2017-12-12 | Kci Licensing, Inc. | Laminar dressings and systems for applying reduced pressure at a tissue site |
US8275442B2 (en) * | 2008-09-25 | 2012-09-25 | Zeltiq Aesthetics, Inc. | Treatment planning systems and methods for body contouring applications |
US8158844B2 (en) | 2008-10-08 | 2012-04-17 | Kci Licensing, Inc. | Limited-access, reduced-pressure systems and methods |
AU2016277595B2 (en) * | 2008-10-29 | 2018-10-18 | Solventum Intellectual Properties Company | Open-cavity, reduced-pressure treatment devices and systems |
AU2015258308B2 (en) * | 2008-10-29 | 2016-10-27 | Solventum Intellectual Properties Company | Open-cavity, reduced-pressure treatment devices and systems |
BRPI0914494A2 (en) | 2008-10-29 | 2015-10-27 | Kci Licensing Inc | medical cartridge connector for releasable connection to a medical cartridge, method of manufacturing a medical cartridge connector and method of releasable connection of a medical cartridge |
EP2340066B1 (en) * | 2008-10-29 | 2013-04-10 | KCI Licensing, Inc. | Open-cavity, reduced-pressure treatment devices and systems |
MX2011004820A (en) * | 2008-11-07 | 2011-05-30 | Kci Licensing Inc | Reduced-pressure, wound-treatment dressings and systems. |
CA2743777C (en) | 2008-11-14 | 2018-10-30 | Richard Daniel John Coulthard | Fluid pouch, system, and method for storing fluid from a tissue site |
CA2743727C (en) * | 2008-11-18 | 2017-04-11 | Kci Licensing, Inc. | Reduced-pressure, composite manifolds |
US8603073B2 (en) | 2008-12-17 | 2013-12-10 | Zeltiq Aesthetics, Inc. | Systems and methods with interrupt/resume capabilities for treating subcutaneous lipid-rich cells |
US8708984B2 (en) | 2008-12-24 | 2014-04-29 | Kci Licensing, Inc. | Reduced-pressure wound treatment systems and methods employing manifold structures |
US8486032B2 (en) | 2008-12-24 | 2013-07-16 | Kci Licensing, Inc. | Reduced-pressure treatment systems and methods employing debridement mechanisms |
SG172010A1 (en) | 2008-12-30 | 2011-07-28 | Kci Licensing Inc | Reduced pressure augmentation of microfracture procedures for cartilage repair |
RU2011122964A (en) | 2008-12-30 | 2013-02-10 | КейСиАй ЛАЙСЕНЗИНГ, ИНК. | DEVICES, SYSTEMS AND METHODS FOR MANAGING THE FLOW OF A LIQUID ASSOCIATED WITH A PART OF A FABRIC, USING THE AVAILABILITY OF A REDUCED PRESSURE |
WO2010078349A2 (en) | 2008-12-31 | 2010-07-08 | Kci Licensing, Inc. | Tissue roll scaffolds |
CN102264406B (en) * | 2008-12-31 | 2015-01-14 | 凯希特许有限公司 | Sleeves, manifolds, systems, and methods for applying reduced pressure to subcutaneous tissue site |
US8197551B2 (en) | 2008-12-31 | 2012-06-12 | Kci Licensing, Inc. | Systems for inducing fluid flow to stimulate tissue growth |
US8864728B2 (en) * | 2008-12-31 | 2014-10-21 | Kci Licensing, Inc. | Multi-conduit manifolds, systems, and methods for applying reduced pressure to a subcutaneous tissue site |
RU2011122546A (en) | 2008-12-31 | 2013-02-10 | КейСиАй ЛАЙСЕНЗИНГ, ИНК. | FABRIC SYSTEMS FOR THE FLOW OF THE FLUID |
KR20110102931A (en) | 2008-12-31 | 2011-09-19 | 케이씨아이 라이센싱 인코포레이티드 | Manifolds, systems, and methods for administering reduced pressure to a subcutaneous tissue site |
US8162907B2 (en) * | 2009-01-20 | 2012-04-24 | Tyco Healthcare Group Lp | Method and apparatus for bridging from a dressing in negative pressure wound therapy |
US8246591B2 (en) | 2009-01-23 | 2012-08-21 | Tyco Healthcare Group Lp | Flanged connector for wound therapy |
US20100191198A1 (en) * | 2009-01-26 | 2010-07-29 | Tyco Healthcare Group Lp | Wound Filler Material with Improved Nonadherency Properties |
US8167869B2 (en) | 2009-02-10 | 2012-05-01 | Tyco Healthcare Group Lp | Wound therapy system with proportional valve mechanism |
US20100204752A1 (en) * | 2009-02-10 | 2010-08-12 | Tyco Healthcare Group Lp | Negative Pressure and Electrostimulation Therapy Apparatus |
GB0902368D0 (en) | 2009-02-13 | 2009-04-01 | Smith & Nephew | Wound packing |
KR101019714B1 (en) * | 2009-04-01 | 2011-03-07 | 쓰리디이미징앤시뮬레이션즈(주) | Apparatus for acquiring digital X-ray image |
US8444614B2 (en) | 2009-04-10 | 2013-05-21 | Spiracur, Inc. | Methods and devices for applying closed incision negative pressure wound therapy |
EP2905037B1 (en) * | 2009-04-10 | 2017-05-17 | KCI Licensing, Inc. | Devices for applying closed incision negative pressure wound therapy |
US8663198B2 (en) | 2009-04-17 | 2014-03-04 | Kalypto Medical, Inc. | Negative pressure wound therapy device |
EP2424475B1 (en) | 2009-04-30 | 2014-04-02 | Zeltiq Aesthetics, Inc. | Device and system for removing heat from subcutaneous lipid-rich cells |
ES1070675Y (en) | 2009-05-20 | 2010-01-14 | Canada Juan Marquez | IMPROVED VACUUM TANK APPLICABLE AS POSTOPERATIVE COMPRESSION TREATMENT |
US20100305523A1 (en) * | 2009-05-27 | 2010-12-02 | Tyco Healthcare Group Lp | Active Exudate Control System |
US20110196321A1 (en) | 2009-06-10 | 2011-08-11 | Tyco Healthcare Group Lp | Fluid Collection Canister Including Canister Top with Filter Membrane and Negative Pressure Wound Therapy Systems Including Same |
US20100318043A1 (en) * | 2009-06-10 | 2010-12-16 | Tyco Healthcare Group Lp | Negative Pressure Wound Therapy Systems Capable of Vacuum Measurement Independent of Orientation |
US20100318071A1 (en) * | 2009-06-10 | 2010-12-16 | Tyco Healthcare Group Lp | Fluid Collection Canister Including Canister Top with Filter Membrane and Negative Pressure Wound Therapy Systems Including Same |
EP3586805B1 (en) | 2009-06-16 | 2022-04-13 | 3M Innovative Properties Company | Conformable medical dressing with self supporting substrate |
US20100324516A1 (en) * | 2009-06-18 | 2010-12-23 | Tyco Healthcare Group Lp | Apparatus for Vacuum Bridging and/or Exudate Collection |
US8469936B2 (en) | 2009-07-15 | 2013-06-25 | Kci Licensing, Inc. | Reduced-pressure dressings, systems, and methods employing desolidifying barrier layers |
EP2461863B1 (en) * | 2009-08-05 | 2016-07-27 | Covidien LP | Surgical wound dressing incorporating connected hydrogel beads having an embedded electrode therein |
US8447375B2 (en) | 2009-08-13 | 2013-05-21 | J&M Shuler Medical, Inc. | Methods and dressing systems for promoting healing of injured tissue |
US20110054420A1 (en) | 2009-08-27 | 2011-03-03 | Christopher Brian Locke | Reduced-pressure wound dressings and systems for re-epithelialization and granulation |
US8690844B2 (en) | 2009-08-27 | 2014-04-08 | Kci Licensing, Inc. | Re-epithelialization wound dressings and systems |
US20110066123A1 (en) | 2009-09-15 | 2011-03-17 | Aidan Marcus Tout | Medical dressings, systems, and methods employing sealants |
US20110106027A1 (en) * | 2009-11-05 | 2011-05-05 | Tyco Healthcare Group Lp | Chemically Coated Screen for Use with Hydrophobic Filters |
EP2515961B1 (en) | 2009-12-22 | 2019-04-17 | Smith & Nephew, Inc. | Apparatuses for negative pressure wound therapy |
US8377018B2 (en) | 2009-12-23 | 2013-02-19 | Kci Licensing, Inc. | Reduced-pressure, multi-orientation, liquid-collection canister |
EP2525841B1 (en) | 2010-01-20 | 2019-07-17 | KCI Licensing, Inc. | Wound-connection pads for fluid instillation and negative pressure wound therapy |
WO2011090996A2 (en) | 2010-01-20 | 2011-07-28 | Kci Licensing, Inc. | Leak-resistant bandage systems and methods with hydrophilic foam wound insert for fluid-instillation and/or negative-pressure wound therapies |
KR20120113788A (en) | 2010-01-25 | 2012-10-15 | 젤티크 애스세틱스, 인코포레이티드. | Home-use applicators for non-invasively removing heat from subcutaneous lipid-rich cells via phase change coolants, and associated devices, systems and methods |
EP2896394A1 (en) | 2010-01-29 | 2015-07-22 | KCI Licensing Inc. | Systems and methods for positioning fluid supply system |
US8646479B2 (en) | 2010-02-03 | 2014-02-11 | Kci Licensing, Inc. | Singulation of valves |
US8791315B2 (en) | 2010-02-26 | 2014-07-29 | Smith & Nephew, Inc. | Systems and methods for using negative pressure wound therapy to manage open abdominal wounds |
US8721606B2 (en) | 2010-03-11 | 2014-05-13 | Kci Licensing, Inc. | Dressings, systems, and methods for treating a tissue site |
US8454580B2 (en) | 2010-03-12 | 2013-06-04 | Kci Licensing, Inc. | Adjustable reduced-pressure wound coverings |
US8882730B2 (en) | 2010-03-12 | 2014-11-11 | Kci Licensing, Inc. | Radio opaque, reduced-pressure manifolds, systems, and methods |
US9358158B2 (en) | 2010-03-16 | 2016-06-07 | Kci Licensing, Inc. | Patterned neo-epithelialization dressings, systems, and methods |
US8814842B2 (en) | 2010-03-16 | 2014-08-26 | Kci Licensing, Inc. | Delivery-and-fluid-storage bridges for use with reduced-pressure systems |
US9999702B2 (en) | 2010-04-09 | 2018-06-19 | Kci Licensing Inc. | Apparatuses, methods, and compositions for the treatment and prophylaxis of chronic wounds |
US8785713B2 (en) | 2010-04-13 | 2014-07-22 | Kci Licensing, Inc. | Compositions with reactive ingredients, and wound dressings, apparatuses, and methods |
US20110257611A1 (en) * | 2010-04-16 | 2011-10-20 | Kci Licensing, Inc. | Systems, apparatuses, and methods for sizing a subcutaneous, reduced-pressure treatment device |
US8604265B2 (en) | 2010-04-16 | 2013-12-10 | Kci Licensing, Inc. | Dressings and methods for treating a tissue site on a patient |
US9061095B2 (en) | 2010-04-27 | 2015-06-23 | Smith & Nephew Plc | Wound dressing and method of use |
GB201006986D0 (en) | 2010-04-27 | 2010-06-09 | Smith & Nephew | Wound dressing |
WO2011134482A2 (en) * | 2010-04-29 | 2011-11-03 | Coloplast A/S | Customizable collection device |
US8623047B2 (en) | 2010-04-30 | 2014-01-07 | Kci Licensing, Inc. | System and method for sealing an incisional wound |
USRE48117E1 (en) | 2010-05-07 | 2020-07-28 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
US8641693B2 (en) | 2010-05-18 | 2014-02-04 | Kci Licensing, Inc. | Reduced-pressure canisters and methods for recycling |
AU2011278982B2 (en) | 2010-07-16 | 2016-05-05 | Solventum Intellectual Properties Company | System and method for interfacing with a reduced pressure dressing |
US8795257B2 (en) | 2010-07-19 | 2014-08-05 | Kci Licensing, Inc. | Systems and methods for electrically detecting the presence of exudate in dressings |
US8676338B2 (en) | 2010-07-20 | 2014-03-18 | Zeltiq Aesthetics, Inc. | Combined modality treatment systems, methods and apparatus for body contouring applications |
GB2482337B (en) * | 2010-07-30 | 2015-10-14 | Salts Healthcare Ltd | Wound management device |
US9610093B2 (en) | 2010-08-06 | 2017-04-04 | Kci Licensing, Inc. | Microblister skin grafting |
US9597111B2 (en) | 2010-08-06 | 2017-03-21 | Kci Licensing, Inc. | Methods for applying a skin graft |
US9173674B2 (en) | 2010-08-06 | 2015-11-03 | MoMelan Technologies, Inc. | Devices for harvesting a skin graft |
US8978234B2 (en) | 2011-12-07 | 2015-03-17 | MoMelan Technologies, Inc. | Methods of manufacturing devices for generating skin grafts |
CN101940804B (en) * | 2010-09-03 | 2012-08-29 | 惠州市华阳医疗电子有限公司 | Negative pressure wound therapeutic system capable of detecting and displaying transudate volume |
AU2011316599B2 (en) | 2010-10-12 | 2018-09-20 | Smith & Nephew, Inc. | Medical device |
CA140188S (en) | 2010-10-15 | 2011-11-07 | Smith & Nephew | Medical dressing |
CA140189S (en) | 2010-10-15 | 2011-11-07 | Smith & Nephew | Medical dressing |
US8758314B2 (en) | 2010-10-20 | 2014-06-24 | Kci Licensing, Inc. | Reduced-pressure systems, devices, and methods for treating a tissue site that includes a fistula |
US20120109034A1 (en) | 2010-10-27 | 2012-05-03 | Kci Licensing, Inc. | Interactive, wireless reduced-pressure dressings, methods, and systems |
WO2013007973A2 (en) | 2011-07-14 | 2013-01-17 | Smith & Nephew Plc | Wound dressing and method of treatment |
CN101972495B (en) * | 2010-11-17 | 2012-07-18 | 惠州市华阳医疗电子有限公司 | Negative pressure wound treatment system capable of displaying relational graph between volume and viscosity of exudate |
US8591486B2 (en) | 2010-11-17 | 2013-11-26 | Kci Licensing, Inc. | Reduced-pressure systems and methods employing an ultraviolet light source for reducing bioburden |
JP6078472B2 (en) | 2010-11-25 | 2017-02-08 | スミス アンド ネフュー ピーエルシーSmith & Nephew Public Limited Company | Compositions I-II and products and their use |
GB201020005D0 (en) | 2010-11-25 | 2011-01-12 | Smith & Nephew | Composition 1-1 |
CN102038575B (en) * | 2010-12-06 | 2012-09-19 | 陈德华 | Wound filling dressing for closed negative pressure drainage of surgical wound as well as preparation method |
CN102049087A (en) * | 2010-12-14 | 2011-05-11 | 金进精密泵业制品(深圳)有限公司 | Wound care device |
US8944067B2 (en) | 2010-12-15 | 2015-02-03 | Kci Licensing, Inc. | Targeted delivery of magnetically tagged active agents in combination with negative pressure wound therapy |
US8613733B2 (en) | 2010-12-15 | 2013-12-24 | Kci Licensing, Inc. | Foam dressing with integral porous film |
CA2821681C (en) | 2010-12-22 | 2023-05-16 | Smith & Nephew, Inc. | Apparatuses and methods for negative pressure wound therapy |
USD714433S1 (en) | 2010-12-22 | 2014-09-30 | Smith & Nephew, Inc. | Suction adapter |
WO2012103242A1 (en) | 2011-01-25 | 2012-08-02 | Zeltiq Aesthetics, Inc. | Devices, application systems and methods with localized heat flux zones for removing heat from subcutaneous lipid-rich cells |
GB2488749A (en) | 2011-01-31 | 2012-09-12 | Systagenix Wound Man Ip Co Bv | Laminated silicone coated wound dressing |
US9421132B2 (en) | 2011-02-04 | 2016-08-23 | University Of Massachusetts | Negative pressure wound closure device |
CA2828964A1 (en) | 2011-02-04 | 2012-08-09 | University Of Massachusetts | Negative pressure wound closure device |
US8597264B2 (en) | 2011-03-24 | 2013-12-03 | Kci Licensing, Inc. | Apparatuses, methods, and compositions for the treatment and prophylaxis of chronic wounds |
US9302034B2 (en) | 2011-04-04 | 2016-04-05 | Smith & Nephew, Inc. | Negative pressure wound therapy dressing |
WO2012142473A1 (en) * | 2011-04-15 | 2012-10-18 | University Of Massachusetts | Surgical cavity drainage and closure system |
GB201106491D0 (en) | 2011-04-15 | 2011-06-01 | Systagenix Wound Man Ip Co Bv | Patterened silicone coating |
GB201108229D0 (en) | 2011-05-17 | 2011-06-29 | Smith & Nephew | Tissue healing |
US9058634B2 (en) | 2011-05-24 | 2015-06-16 | Kalypto Medical, Inc. | Method for providing a negative pressure wound therapy pump device |
WO2012161723A1 (en) | 2011-05-24 | 2012-11-29 | Kalypto Medical, Inc. | Device with controller and pump modules for providing negative pressure for wound therapy |
US9067003B2 (en) | 2011-05-26 | 2015-06-30 | Kalypto Medical, Inc. | Method for providing negative pressure to a negative pressure wound therapy bandage |
JP6449015B2 (en) | 2011-05-26 | 2019-01-09 | ケーシーアイ ライセンシング インコーポレイテッド | System and method for stimulation and activation of liquids used in infusion therapy |
BR112013031464A2 (en) | 2011-06-07 | 2016-12-06 | Smith & Nephew | Wound Contact Methods and Limbs |
US9456930B2 (en) | 2011-07-12 | 2016-10-04 | Kci Licensing, Inc. | Topical vacuum-press surgical incisional dressings, surgical adjuncts, hybrids and composites |
EP3381483B1 (en) | 2011-07-26 | 2019-10-16 | KCI Licensing, Inc. | Systems for treating a tissue site with reduced pressure involving a reduced-pressure interface having a cutting element |
BR112014002229A2 (en) * | 2011-08-03 | 2017-02-21 | Kci Licensing Inc | reduced pressure system for treating a tissue site having a linear wound, dressing dressing assembly for treating a tissue site having a linear wound, method of treating a tissue site having a linear wound , Method of Manufacturing a Wound Dressing Assembly for the Treatment of Injured Subcutaneous Tissue and Dressings, Reduced Pressure Systems and Interfaces |
US9198803B1 (en) * | 2011-09-26 | 2015-12-01 | David S. London | Dressing device for offloading and treating an ulcer |
CN102357276B (en) * | 2011-10-31 | 2014-02-26 | 惠州市华阳医疗电子有限公司 | Negative pressure wound therapy system for detecting transudate level by photoelectric total reflection |
US9393354B2 (en) | 2011-11-01 | 2016-07-19 | J&M Shuler Medical, Inc. | Mechanical wound therapy for sub-atmospheric wound care system |
BR112014010647A2 (en) * | 2011-11-02 | 2017-04-25 | Smith & Nephew | pressure therapy devices and methods of use thereof |
US20150159066A1 (en) | 2011-11-25 | 2015-06-11 | Smith & Nephew Plc | Composition, apparatus, kit and method and uses thereof |
EP2786713B1 (en) * | 2011-11-30 | 2017-05-31 | Olympus Corporation | Medical device |
AU2012352000B2 (en) | 2011-12-16 | 2017-06-29 | Solventum Intellectual Properties Company | Releasable medical drapes |
US10940047B2 (en) | 2011-12-16 | 2021-03-09 | Kci Licensing, Inc. | Sealing systems and methods employing a hybrid switchable drape |
GB2501055B (en) * | 2012-02-01 | 2017-08-30 | Banwell Paul | Scar reduction apparatus |
US10220125B2 (en) | 2012-02-03 | 2019-03-05 | Smith & Nephew Plc | Apparatuses and methods for wound therapy |
US8758315B2 (en) | 2012-02-21 | 2014-06-24 | Kci Licensing, Inc. | Multi-orientation canister for use with a reduced pressure treatment system |
CN107260399B (en) | 2012-03-12 | 2022-02-22 | 史密夫及内修公开有限公司 | Wound dressing apparatus for reduced pressure wound therapy |
WO2013142372A1 (en) | 2012-03-20 | 2013-09-26 | Kci Licensing, Inc. | Targeted enzymatic degradation of quorum-sensing peptides |
CA2867969C (en) | 2012-03-20 | 2020-03-24 | Smith & Nephew Plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
US10286129B2 (en) | 2012-03-28 | 2019-05-14 | Kci Licensing, Inc. | Reduced-pressure systems, dressings, and methods facilitating separation of electronic and clinical component parts |
WO2013158897A1 (en) | 2012-04-19 | 2013-10-24 | Kci Licensing, Inc. | Disc pump valve with performance enhancing valve flap |
USD733896S1 (en) | 2012-05-04 | 2015-07-07 | Genadyne Biotechnologies, Inc. | Abdominal dressing |
AU346291S (en) | 2012-05-15 | 2013-01-09 | Smith & Nephew | Medical dressing |
CA2874396A1 (en) | 2012-05-22 | 2014-01-23 | Smith & Nephew Plc | Wound closure device |
MX2014014266A (en) | 2012-05-22 | 2015-06-23 | Smith & Nephew | Apparatuses and methods for wound therapy. |
CN107095739B (en) | 2012-05-23 | 2020-11-13 | 史密夫及内修公开有限公司 | Apparatus and method for negative pressure wound therapy |
EP3470029A1 (en) | 2012-05-24 | 2019-04-17 | Smith & Nephew, Inc. | Devices for treating and closing wounds with negative pressure |
CN102715983A (en) * | 2012-06-27 | 2012-10-10 | 南京双威生物医学科技有限公司 | Medical natural porous fiber filler and vacuum sealing drainage device thereof |
WO2014008348A2 (en) | 2012-07-05 | 2014-01-09 | Kci Licensing, Inc. | Systems and methods for supplying reduced pressure using a disc pump with electrostatic actuation |
US9709042B2 (en) | 2012-07-05 | 2017-07-18 | Kci Licensing, Inc. | Systems and methods for regulating the resonant frequency of a disc pump cavity |
BR112015000890A2 (en) | 2012-07-16 | 2017-06-27 | Smith & Nephew Inc | negative pressure wound closure device |
EP3403624B1 (en) * | 2012-07-30 | 2020-09-02 | KCI Licensing, Inc. | Reduced-pressure absorbent dressing, system for treating a tissue site, and method of manufacturing the dressing |
CA3178997A1 (en) | 2012-08-01 | 2014-02-06 | Smith & Nephew Plc | Wound dressing |
WO2014020443A2 (en) | 2012-08-01 | 2014-02-06 | Smith & Nephew Pcl | Wound dressing and method of treatment |
EP2882470B1 (en) * | 2012-08-13 | 2020-03-18 | KCI Licensing, Inc. | Intelligent therapy system with evaporation management |
ES2820373T3 (en) | 2012-09-14 | 2021-04-20 | 3M Innovative Properties Co | System to regulate pressure |
EP3964244A1 (en) | 2012-10-25 | 2022-03-09 | 3M Innovative Properties Co. | Wound connection pad with pneumatic connection confirmation ability |
US9968488B2 (en) | 2012-11-12 | 2018-05-15 | Kci Usa, Inc. | Externally-applied patient interface system and method |
JP6324983B2 (en) | 2012-11-16 | 2018-05-16 | ケーシーアイ ライセンシング インコーポレイテッド | Medical drape having a patterned adhesive layer and method for producing the same |
WO2014082003A1 (en) | 2012-11-26 | 2014-05-30 | Kci Licensing, Inc. | Combined solution pump and storage system for use with a reduced-pressure treatment system |
EP3466457B1 (en) | 2012-12-06 | 2023-03-08 | IC Surgical, Inc. | Adaptable wound drainage system |
GB201222770D0 (en) | 2012-12-18 | 2013-01-30 | Systagenix Wound Man Ip Co Bv | Wound dressing with adhesive margin |
AU2013371582B2 (en) | 2013-01-02 | 2018-01-18 | 3M Innovative Properties Company | A medical drape having an ultra-thin drape film and a thick adhesive coating |
US9561135B2 (en) | 2013-01-02 | 2017-02-07 | Kci Licensing, Inc. | Flexible, adherent, and non-polyurethane film wound drape cover |
EP3437667B1 (en) | 2013-01-03 | 2021-09-22 | 3M Innovative Properties Company | Recharging negative-pressure wound therapy |
EP2941232B2 (en) | 2013-01-03 | 2019-04-10 | KCI Licensing, Inc. | Moisture absorbing seal |
GB201317746D0 (en) | 2013-10-08 | 2013-11-20 | Smith & Nephew | PH indicator |
WO2014113504A1 (en) | 2013-01-16 | 2014-07-24 | Kci Licensing, Inc. | Manually-actuated reduced pressure treatment system with audible leak indicator |
JP6392781B2 (en) | 2013-01-16 | 2018-09-19 | ケーシーアイ ライセンシング インコーポレイテッド | Dressing with asymmetric absorbent core for negative pressure closure therapy |
EP2945659B1 (en) | 2013-01-16 | 2019-10-30 | KCI Licensing, Inc. | Ion exchange enhanced absorbent systems |
US20140257210A1 (en) * | 2013-02-20 | 2014-09-11 | Arnold R. Leiboff | Wound Management Method and Apparatus |
WO2014137824A1 (en) | 2013-03-07 | 2014-09-12 | Life Sciences Llc | Apparatus & method for wound infection prevention |
EP2968054B1 (en) | 2013-03-12 | 2020-07-22 | KCI Licensing, Inc. | System utilizing vacuum for promoting the healing of sprains |
WO2014163719A1 (en) | 2013-03-12 | 2014-10-09 | Kci Licensing, Inc. | Apparatus and method for identifying alternative cell chemistries for batteries |
WO2014163751A2 (en) | 2013-03-13 | 2014-10-09 | Kci Licensing, Inc. | System and method for bodily fluid collection |
EP3613450A1 (en) | 2013-03-13 | 2020-02-26 | KCI Licensing, Inc. | Expandandable fluid collection canister |
RU2015142873A (en) | 2013-03-13 | 2017-04-19 | Смит Энд Нефью Инк. | DEVICE AND SYSTEMS FOR CLOSING A Wound USING NEGATIVE PRESSURE, AND METHODS FOR APPLICATION IN TREATING A WAN USING NEGATIVE PRESSURE |
EP2968700B1 (en) | 2013-03-13 | 2019-07-24 | KCI Licensing, Inc. | Collapsible canister for use with reduced pressure therapy device |
US9737649B2 (en) | 2013-03-14 | 2017-08-22 | Smith & Nephew, Inc. | Systems and methods for applying reduced pressure therapy |
US10159771B2 (en) | 2013-03-14 | 2018-12-25 | Smith & Nephew Plc | Compressible wound fillers and systems and methods of use in treating wounds with negative pressure |
EP4018985A1 (en) | 2013-03-14 | 2022-06-29 | 3M Innovative Properties Co. | Absorbent dressing with hybrid drape |
EP2968013B1 (en) | 2013-03-14 | 2017-05-03 | KCI Licensing, Inc. | Absorbent dressing and method of making the same |
EP2967627B1 (en) * | 2013-03-14 | 2017-08-30 | KCI Licensing, Inc. | Absorbent substrates for harvesting skin grafts |
US9844460B2 (en) | 2013-03-14 | 2017-12-19 | Zeltiq Aesthetics, Inc. | Treatment systems with fluid mixing systems and fluid-cooled applicators and methods of using the same |
US9545523B2 (en) | 2013-03-14 | 2017-01-17 | Zeltiq Aesthetics, Inc. | Multi-modality treatment systems, methods and apparatus for altering subcutaneous lipid-rich tissue |
WO2014158526A1 (en) | 2013-03-14 | 2014-10-02 | Kci Licensing, Inc. | Negative pressure therapy with dynamic profile capability |
US9877887B2 (en) | 2013-03-14 | 2018-01-30 | Kci Licensing, Inc. | Compression therapy apparatus, systems, and methods |
EP2968649B1 (en) | 2013-03-14 | 2016-07-20 | KCI Licensing Inc. | Compression bandage having an integrated strain gauge |
WO2014158529A1 (en) | 2013-03-14 | 2014-10-02 | Kci Licensing, Inc. | A fluid collection canister with integrated moisture trap |
JP2016517318A (en) | 2013-03-14 | 2016-06-16 | スミス アンド ネフュー インコーポレーテッド | System and method for administering decompression therapy |
US9795515B2 (en) * | 2013-03-14 | 2017-10-24 | Kci Licensing, Inc. | Micro-porous conduit |
WO2014151107A1 (en) | 2013-03-15 | 2014-09-25 | Kcl Licensing, Inc. | Wound healing compositions |
EP2968707B1 (en) * | 2013-03-15 | 2020-05-06 | Atrium Medical Corporation | Methods and computer system for determining a patient parameter, including a volume of fluid drainage |
US10492956B2 (en) | 2013-03-15 | 2019-12-03 | Kci Licensing, Inc. | Topical vacuum-press surgical incisional dressings, surgical adjuncts, hybrids and composites |
US10695226B2 (en) | 2013-03-15 | 2020-06-30 | Smith & Nephew Plc | Wound dressing and method of treatment |
US10201315B2 (en) | 2013-03-15 | 2019-02-12 | Atrium Medical Corporation | Fluid analyzer and associated methods |
WO2014144762A2 (en) * | 2013-03-15 | 2014-09-18 | The General Hospital Corporation | Method and apparatus for wound dressing |
WO2014140606A1 (en) | 2013-03-15 | 2014-09-18 | Smith & Nephew Plc | Wound dressing and method of treatment |
US8893721B2 (en) | 2013-03-15 | 2014-11-25 | Futrell Medical Corporation | Surgical drape with vapor evacuation |
US20160120706A1 (en) | 2013-03-15 | 2016-05-05 | Smith & Nephew Plc | Wound dressing sealant and use thereof |
WO2014150539A2 (en) | 2013-03-18 | 2014-09-25 | Kci Licensing, Inc. | System and method for multiple direction flexible inline canister |
CA2910854A1 (en) | 2013-05-10 | 2014-11-20 | Smith & Nephew Plc | Fluidic connector for irrigation and aspiration of wounds |
CN103316883B (en) * | 2013-05-20 | 2016-07-13 | 深圳湃尔生物科技有限公司 | Wash trigger waste liquid discharge device |
CN104224268B (en) * | 2013-06-14 | 2016-10-19 | 3M创新有限公司 | Hemostasis vacuum equipment and hemostasis vacuum scalpel |
US10016539B2 (en) | 2013-07-10 | 2018-07-10 | Kci Licensing, Inc. | Manually powered, regulated, negative pressure pump with adapter for external pressure source |
AU2014290685B2 (en) | 2013-07-18 | 2018-12-13 | Kci Licensing, Inc. | Fluid volume measurement using canister resonance for reduced pressure therapy systems |
WO2015030963A1 (en) | 2013-08-26 | 2015-03-05 | Kci Licensing, Inc. | Dressing interface with moisture controlling feature and sealing function |
EP3048985B1 (en) | 2013-09-25 | 2019-04-24 | KCI Licensing, Inc. | Apparatuses for inline collection of a fluid specimen |
EP3048986B1 (en) | 2013-09-25 | 2021-10-27 | 3M Innovative Properties Company | Apparatuses for inline collection of a fluid specimen |
US10667735B2 (en) | 2013-09-25 | 2020-06-02 | Kci Licensing, Inc. | Apparatuses and methods for inline collection of a fluid specimen |
CN105682698B (en) | 2013-10-02 | 2019-06-07 | 凯希特许有限公司 | Disposable Reduced pressure treatment system with machine feedback |
EP3052156B1 (en) | 2013-10-02 | 2020-12-23 | 3M Innovative Properties Company | Diposable reduced-pressure therapy system with electronic feedback |
JP6723917B2 (en) | 2013-10-21 | 2020-07-15 | スミス アンド ネフュー インコーポレイテッド | Negative pressure wound closure device |
US10946124B2 (en) | 2013-10-28 | 2021-03-16 | Kci Licensing, Inc. | Hybrid sealing tape |
ES2670710T3 (en) | 2013-10-30 | 2018-05-31 | Kci Licensing, Inc. | Dressing with differentially sized perforations |
WO2015065612A1 (en) | 2013-10-30 | 2015-05-07 | Kci Licensing, Inc. | Condensate absorbing and dissipating system |
EP3062833B1 (en) | 2013-10-30 | 2019-04-17 | KCI Licensing, Inc. | Absorbent conduit and system |
WO2015065616A1 (en) | 2013-10-30 | 2015-05-07 | Kci Licensing, Inc. | Dressing with sealing and retention intereface |
US9907940B2 (en) | 2013-12-18 | 2018-03-06 | Kci Licensing, Inc. | Autonomous fluid instillation system and method with tissue site pressure monitoring |
US9993261B2 (en) | 2013-12-31 | 2018-06-12 | Kci Licensing, Inc. | Sensor systems for skin graft harvesting |
WO2015103041A1 (en) | 2013-12-31 | 2015-07-09 | Kci Licensing, Inc. | Fluid-assisted skin graft harvesting |
AU2015208298B2 (en) | 2014-01-21 | 2019-10-10 | Smith & Nephew Plc | Wound treatment apparatuses |
EP3096728B1 (en) | 2014-01-21 | 2021-12-15 | Smith & Nephew plc | Collapsible dressing for negative pressure wound treatment |
WO2015117001A1 (en) | 2014-01-31 | 2015-08-06 | Zeltiq Aesthetics, Inc. | Compositions, treatment systems and methods for improved cooling of lipid-rich tissue |
WO2015123353A1 (en) | 2014-02-14 | 2015-08-20 | Kci Licensing, Inc. | Systems and methods for increasing absorbent capacity of a dressing |
US10188581B2 (en) | 2014-02-20 | 2019-01-29 | Kci Licensing, Inc. | Method and system to evacuate one or more dressings using two or more vacuum pumps |
EP3848009A1 (en) | 2014-02-28 | 2021-07-14 | 3M Innovative Properties Company | Hybrid drape having a gel-coated perforated mesh |
US11026844B2 (en) | 2014-03-03 | 2021-06-08 | Kci Licensing, Inc. | Low profile flexible pressure transmission conduit |
US11090183B2 (en) | 2014-11-25 | 2021-08-17 | Purewick Corporation | Container for collecting liquid for transport |
US10675176B1 (en) | 2014-03-19 | 2020-06-09 | Zeltiq Aesthetics, Inc. | Treatment systems, devices, and methods for cooling targeted tissue |
US10952889B2 (en) | 2016-06-02 | 2021-03-23 | Purewick Corporation | Using wicking material to collect liquid for transport |
US11806266B2 (en) | 2014-03-19 | 2023-11-07 | Purewick Corporation | Apparatus and methods for receiving discharged urine |
US11376152B2 (en) | 2014-03-19 | 2022-07-05 | Purewick Corporation | Apparatus and methods for receiving discharged urine |
USD777338S1 (en) | 2014-03-20 | 2017-01-24 | Zeltiq Aesthetics, Inc. | Cryotherapy applicator for cooling tissue |
EP3122285A4 (en) | 2014-03-28 | 2017-04-26 | MicroAire Surgical Instruments, LLC | Endotine breast reconstruction devices and methods |
US10226566B2 (en) | 2014-04-23 | 2019-03-12 | Genadyne Biotechnologies, Inc. | System and process for removing bodily fluids from a body opening |
WO2015168681A1 (en) | 2014-05-02 | 2015-11-05 | Kci Licensing, Inc. | Fluid storage devices, systems, and methods |
US10952891B1 (en) | 2014-05-13 | 2021-03-23 | Zeltiq Aesthetics, Inc. | Treatment systems with adjustable gap applicators and methods for cooling tissue |
EP3854361B8 (en) | 2014-06-05 | 2024-03-27 | Solventum Intellectual Properties Company | Dressing with fluid acquisition and distribution characteristics |
US10610414B2 (en) | 2014-06-18 | 2020-04-07 | Smith & Nephew Plc | Wound dressing and method of treatment |
EP3659638A1 (en) | 2014-07-31 | 2020-06-03 | Smith & Nephew, Inc. | Systems and methods for applying reduced pressure therapy |
US10568759B2 (en) | 2014-08-19 | 2020-02-25 | Zeltiq Aesthetics, Inc. | Treatment systems, small volume applicators, and methods for treating submental tissue |
US10935174B2 (en) | 2014-08-19 | 2021-03-02 | Zeltiq Aesthetics, Inc. | Stress relief couplings for cryotherapy apparatuses |
US11189813B2 (en) | 2014-09-16 | 2021-11-30 | Arnold Leiboff | Wound management method and apparatus |
US10398604B2 (en) | 2014-12-17 | 2019-09-03 | Kci Licensing, Inc. | Dressing with offloading capability |
WO2016103033A2 (en) | 2014-12-22 | 2016-06-30 | Smith & Nephew Plc | Negative pressure wound therapy apparatus and methods |
EP3280465B1 (en) | 2015-04-09 | 2020-12-16 | 3M Innovative Properties Company | Soft-tack, porous substrates for harvesting skin grafts |
CA2980511A1 (en) | 2015-04-27 | 2016-11-03 | Smith & Nephew Plc | Reduced pressure apparatuses and methods |
AU2016254119A1 (en) | 2015-04-29 | 2017-10-05 | Smith & Nephew Inc. | Negative pressure wound closure device |
WO2016182977A1 (en) | 2015-05-08 | 2016-11-17 | Kci Licensing, Inc. | Low acuity dressing with integral pump |
US10076594B2 (en) | 2015-05-18 | 2018-09-18 | Smith & Nephew Plc | Fluidic connector for negative pressure wound therapy |
DE202015004965U1 (en) | 2015-07-10 | 2015-08-24 | Norbert Neubauer | Labyrinth foils drainage |
US10583228B2 (en) | 2015-07-28 | 2020-03-10 | J&M Shuler Medical, Inc. | Sub-atmospheric wound therapy systems and methods |
US11096830B2 (en) | 2015-09-01 | 2021-08-24 | Kci Licensing, Inc. | Dressing with increased apposition force |
EP3349807B1 (en) | 2015-09-17 | 2021-02-24 | 3M Innovative Properties Company | Hybrid silicone and acrylic adhesive cover for use with wound treatment |
WO2017062042A1 (en) | 2015-10-07 | 2017-04-13 | Smith & Nephew, Inc. | Systems and methods for applying reduced pressure therapy |
EP3364900B1 (en) | 2015-10-19 | 2021-08-18 | Zeltiq Aesthetics, Inc. | Vascular treatment methods for cooling vascular structures |
WO2017079439A1 (en) | 2015-11-03 | 2017-05-11 | Kci Licensing, Inc. | Device for creating an epidermal graft sheet |
EP3669840B1 (en) | 2015-11-20 | 2022-12-28 | 3M Innovative Properties Company | Medical system with flexible fluid storage bridge |
FR3044893B1 (en) * | 2015-12-09 | 2018-05-18 | Emile Droche | DRESSING FOR SKIN CARE IN A WET MEDIUM |
US10575991B2 (en) * | 2015-12-15 | 2020-03-03 | University Of Massachusetts | Negative pressure wound closure devices and methods |
US10814049B2 (en) | 2015-12-15 | 2020-10-27 | University Of Massachusetts | Negative pressure wound closure devices and methods |
EP3397220B1 (en) | 2015-12-30 | 2020-07-01 | Smith & Nephew plc | Negative pressure wound therapy apparatus |
US10420847B2 (en) | 2015-12-30 | 2019-09-24 | University Of Kansas Medical Center Research Institute, Inc. | System and method for wound array variables evaluation (WAVE) |
EP3397219B1 (en) | 2015-12-30 | 2020-10-21 | Smith & Nephew plc | Absorbent negative pressure wound therapy dressing |
US10524956B2 (en) | 2016-01-07 | 2020-01-07 | Zeltiq Aesthetics, Inc. | Temperature-dependent adhesion between applicator and skin during cooling of tissue |
US10765552B2 (en) | 2016-02-18 | 2020-09-08 | Zeltiq Aesthetics, Inc. | Cooling cup applicators with contoured heads and liner assemblies |
USD796735S1 (en) | 2016-02-29 | 2017-09-05 | Smith & Nephew Plc | Mount apparatus for portable negative pressure apparatus |
JP1586116S (en) | 2016-02-29 | 2017-09-19 | ||
US11771820B2 (en) | 2016-03-04 | 2023-10-03 | Smith & Nephew Plc | Negative pressure wound therapy apparatus for post breast surgery wounds |
US11723809B2 (en) | 2016-03-07 | 2023-08-15 | Smith & Nephew Plc | Wound treatment apparatuses and methods with negative pressure source integrated into wound dressing |
CN105798044B (en) * | 2016-03-10 | 2018-12-14 | 济南海能仪器股份有限公司 | Waste discharge apparatus for fibrometer system |
CN114469523A (en) | 2016-04-26 | 2022-05-13 | 史密夫及内修公开有限公司 | Wound dressing and method for use with an integrated negative pressure source having a fluid intrusion inhibiting feature |
WO2017191149A1 (en) | 2016-05-03 | 2017-11-09 | Smith & Nephew Plc | Optimizing power transfer to negative pressure sources in negative pressure therapy systems |
CA3022587A1 (en) | 2016-05-03 | 2017-11-09 | Smith & Nephew Plc | Systems and methods for driving negative pressure sources in negative pressure therapy systems |
EP3452129B1 (en) | 2016-05-03 | 2022-03-23 | Smith & Nephew plc | Negative pressure wound therapy device activation and control |
US10682297B2 (en) | 2016-05-10 | 2020-06-16 | Zeltiq Aesthetics, Inc. | Liposomes, emulsions, and methods for cryotherapy |
US11382790B2 (en) | 2016-05-10 | 2022-07-12 | Zeltiq Aesthetics, Inc. | Skin freezing systems for treating acne and skin conditions |
US10555831B2 (en) | 2016-05-10 | 2020-02-11 | Zeltiq Aesthetics, Inc. | Hydrogel substances and methods of cryotherapy |
JP2019514591A (en) | 2016-05-13 | 2019-06-06 | スミス アンド ネフュー インコーポレイテッド | Automated wound binding detection in negative pressure wound therapy systems |
USD928946S1 (en) | 2016-06-02 | 2021-08-24 | Purewick Corporation | Urine receiving apparatus |
CN106039527B (en) * | 2016-07-11 | 2022-03-29 | 郑州迪奥医学技术有限公司 | High-flow anti-blocking flushable drainage catheter for orthopedics department |
GB201612948D0 (en) * | 2016-07-26 | 2016-09-07 | Provensis Ltd | syringe for administering foam |
US10973678B2 (en) | 2016-07-27 | 2021-04-13 | Purewick Corporation | Apparatus and methods for receiving discharged urine |
US11116669B2 (en) | 2016-08-25 | 2021-09-14 | Smith & Nephew Plc | Absorbent negative pressure wound therapy dressing |
CN109640903A (en) | 2016-08-30 | 2019-04-16 | 史密夫及内修公开有限公司 | For applying the system of reduced pressure therapy |
USD988519S1 (en) * | 2016-09-12 | 2023-06-06 | Nyxoah S.A. | Patch |
EP3518847B1 (en) | 2016-09-27 | 2023-03-01 | Smith & Nephew plc | Wound closure devices with dissolvable portions |
AU2017335635B2 (en) | 2016-09-29 | 2023-01-05 | Smith & Nephew, Inc. | Construction and protection of components in negative pressure wound therapy systems |
AU2017336310B2 (en) | 2016-09-30 | 2022-12-08 | Smith & Nephew Plc | Negative pressure wound treatment apparatuses and methods with integrated electronics |
GB2555584B (en) | 2016-10-28 | 2020-05-27 | Smith & Nephew | Multi-layered wound dressing and method of manufacture |
CA3042673A1 (en) | 2016-11-02 | 2018-05-11 | Smith & Nephew Inc. | Wound closure devices |
WO2018108784A1 (en) | 2016-12-12 | 2018-06-21 | Smith & Nephew Plc | Wound dressing |
US11446174B2 (en) * | 2016-12-19 | 2022-09-20 | Purewick Corporation | Micro-climate-managed skin care, including wound care |
US11491265B2 (en) | 2017-02-22 | 2022-11-08 | Cornell University | Mechanical vacuum dressing for mechanically managing, protecting and suctioning small incisional wounds |
IL268887B2 (en) | 2017-02-28 | 2023-11-01 | Nyxoah SA | Surgical Implant System |
CN110582257B (en) | 2017-03-08 | 2022-03-15 | 史密夫及内修公开有限公司 | Negative pressure wound therapy device control in the presence of fault conditions |
US11076879B2 (en) | 2017-04-26 | 2021-08-03 | Zeltiq Aesthetics, Inc. | Shallow surface cryotherapy applicators and related technology |
JP7121050B2 (en) | 2017-05-09 | 2022-08-17 | スミス アンド ネフュー ピーエルシー | Redundant control of negative pressure wound therapy systems |
US11872110B2 (en) | 2017-06-13 | 2024-01-16 | Smith & Nephew Plc | Wound closure device and method of use |
US11324876B2 (en) | 2017-06-13 | 2022-05-10 | Smith & Nephew Plc | Collapsible structure and method of use |
AU2018284233B2 (en) | 2017-06-14 | 2024-01-04 | Smith & Nephew, Inc. | Fluid removal management and control of wound closure in wound therapy |
WO2018231874A1 (en) | 2017-06-14 | 2018-12-20 | Smith & Nephew, Inc. | Control of wound closure and fluid removal management in wound therapy |
US11724020B2 (en) | 2017-06-14 | 2023-08-15 | Smith & Nephew Plc | Collapsible sheet for wound closure and method of use |
JP7155162B2 (en) | 2017-06-14 | 2022-10-18 | ティージェイ スミス アンド ネフュー リミテッド | Negative pressure wound therapy unit |
EP3638170B1 (en) | 2017-06-14 | 2024-03-13 | Smith & Nephew PLC | Collapsible structure for wound closure and method of use |
CN110753532B (en) | 2017-06-30 | 2022-04-12 | T.J.史密夫及内修有限公司 | Negative pressure wound therapy device |
US11712508B2 (en) | 2017-07-10 | 2023-08-01 | Smith & Nephew, Inc. | Systems and methods for directly interacting with communications module of wound therapy apparatus |
RU175660U1 (en) * | 2017-07-25 | 2017-12-13 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Амурская государственная медицинская академия" Министерства здравоохранения Российской Федерации | Device for recording the appearance of exudate in a postoperative wound |
WO2019020544A1 (en) | 2017-07-27 | 2019-01-31 | Smith & Nephew Plc | Customizable wound closure device and method of use |
WO2019030136A1 (en) | 2017-08-07 | 2019-02-14 | Smith & Nephew Plc | Wound closure device with protective layer and method of use |
WO2019042790A1 (en) | 2017-08-29 | 2019-03-07 | Smith & Nephew Plc | Systems and methods for monitoring wound closure |
GB201718070D0 (en) | 2017-11-01 | 2017-12-13 | Smith & Nephew | Negative pressure wound treatment apparatuses and methods with integrated electronics |
CN111065424A (en) | 2017-09-13 | 2020-04-24 | 史密夫及内修公开有限公司 | Negative pressure wound therapy apparatus with integrated electronics and method |
GB201718014D0 (en) | 2017-11-01 | 2017-12-13 | Smith & Nephew | Dressing for negative pressure wound therapy with filter |
GB201718054D0 (en) | 2017-11-01 | 2017-12-13 | Smith & Nephew | Sterilization of integrated negative pressure wound treatment apparatuses and sterilization methods |
GB201718072D0 (en) | 2017-11-01 | 2017-12-13 | Smith & Nephew | Negative pressure wound treatment apparatuses and methods with integrated electronics |
WO2019086332A1 (en) | 2017-11-01 | 2019-05-09 | Smith & Nephew Plc | Negative pressure wound treatment apparatuses and methods with integrated electronics |
US11839527B2 (en) | 2017-12-06 | 2023-12-12 | Cornell University | Manually-operated negative pressure wound therapy (NPWT) bandage with improved pump efficiency, automatic pressure indicator and automatic pressure limiter |
US20210379273A1 (en) * | 2018-04-10 | 2021-12-09 | Kci Licensing, Inc. | Bridge dressing with fluid management |
US11406750B2 (en) * | 2018-04-13 | 2022-08-09 | Kci Licensing, Inc. | Compression strain and negative pressure delivery indicator for a wound dressing |
BR112020022290A2 (en) | 2018-05-01 | 2021-02-23 | Purewick Corporation | fluid collection devices, related systems, and related methods |
CN112804971B (en) | 2018-05-01 | 2024-03-26 | 普利维克公司 | Fluid collection garment |
JP7114740B2 (en) | 2018-05-01 | 2022-08-08 | ピュアウィック コーポレイション | Fluid collection device and system |
GB201811449D0 (en) | 2018-07-12 | 2018-08-29 | Smith & Nephew | Apparatuses and methods for negative pressure wound therapy |
EP3829496A1 (en) | 2018-07-31 | 2021-06-09 | Zeltiq Aesthetics, Inc. | Methods, devices, and systems for improving skin characteristics |
USD898925S1 (en) | 2018-09-13 | 2020-10-13 | Smith & Nephew Plc | Medical dressing |
EP3893825A1 (en) | 2018-12-13 | 2021-10-20 | University of Massachusetts | Negative pressure wound closure devices and methods |
GB201820668D0 (en) | 2018-12-19 | 2019-01-30 | Smith & Nephew Inc | Systems and methods for delivering prescribed wound therapy |
CN111714171B (en) * | 2019-03-19 | 2023-11-24 | 景润(上海)医疗器械有限公司 | Surgical auxiliary device for closing skin wound without suture in skin superficial fascia |
RU2720831C1 (en) * | 2019-05-31 | 2020-05-13 | Государственное бюджетное учреждение здравоохранения "Научно-исследовательский институт - краевая клиническая больница N 1 имени профессора С.В. Очаповского" Министерства здравоохранения Краснодарского края (ГБУЗ "НИИ-ККБ N 1 им. проф. Очаповского" Минздрава Краснодарского края) | Method of vacuum dressing application |
USD929578S1 (en) | 2019-06-06 | 2021-08-31 | Purewick Corporation | Urine collection assembly |
US11744742B1 (en) | 2019-06-10 | 2023-09-05 | Todd R. Wurth | Cryotherapy dressing system |
RU197908U1 (en) * | 2019-08-21 | 2020-06-05 | Общество с ограниченной ответственностью "МЕДИНВЕСТ" | Alternating negative pressure vacuum therapy device |
US11160917B2 (en) | 2020-01-22 | 2021-11-02 | J&M Shuler Medical Inc. | Negative pressure wound therapy barrier |
EP4110422A1 (en) * | 2020-02-28 | 2023-01-04 | Boston Scientific Scimed, Inc. | Medical systems, devices, and related methods |
USD967409S1 (en) | 2020-07-15 | 2022-10-18 | Purewick Corporation | Urine collection apparatus cover |
US11801186B2 (en) | 2020-09-10 | 2023-10-31 | Purewick Corporation | Urine storage container handle and lid accessories |
CA3162613A1 (en) | 2021-01-19 | 2022-07-19 | Purewick Corporation | Variable fit fluid collection devices, systems, and methods |
EP4274524A1 (en) | 2021-02-26 | 2023-11-15 | Purewick Corporation | Fluid collection devices having a sump between a tube opening and a barrier, and related systems and methods |
US11938054B2 (en) | 2021-03-10 | 2024-03-26 | Purewick Corporation | Bodily waste and fluid collection with sacral pad |
WO2023023405A1 (en) * | 2021-08-20 | 2023-02-23 | Zam Research Llc | Re-epithelializing dressing and treatment method |
RU2764701C1 (en) * | 2021-10-26 | 2022-01-19 | Федеральное государственное бюджетное учреждение "Национальный медицинский исследовательский центр кардиологии" Министерства здравоохранения Российской Федерации (ФГБУ "НМИЦ кардиологии" Минздрава России) | Flow-through unit of a device for diagnosing disorders of cellular hemostasis |
US11553910B1 (en) * | 2022-02-09 | 2023-01-17 | Giftedness And Creativity Company | Modified intervastus arthrotomy closure method |
CN116392705A (en) * | 2023-04-21 | 2023-07-07 | 中国医学科学院北京协和医院 | Fixed-free wound drainage tube for total knee arthroplasty |
Family Cites Families (203)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US221427A (en) | 1879-11-11 | Improvement in barb-fence links | ||
US1355846A (en) | 1920-02-06 | 1920-10-19 | David A Rannells | Medical appliance |
US2547758A (en) | 1949-01-05 | 1951-04-03 | Wilmer B Keeling | Instrument for treating the male urethra |
US2632443A (en) | 1949-04-18 | 1953-03-24 | Eleanor P Lesher | Surgical dressing |
GB692578A (en) | 1949-09-13 | 1953-06-10 | Minnesota Mining & Mfg | Improvements in or relating to drape sheets for surgical use |
US2682873A (en) | 1952-07-30 | 1954-07-06 | Johnson & Johnson | General purpose protective dressing |
NL189176B (en) | 1956-07-13 | 1900-01-01 | Hisamitsu Pharmaceutical Co | PLASTER BASED ON A SYNTHETIC RUBBER. |
US2969057A (en) | 1957-11-04 | 1961-01-24 | Brady Co W H | Nematodic swab |
US3115138A (en) | 1960-07-14 | 1963-12-24 | Mcelvenny | Evacuator |
US3066672A (en) | 1960-09-27 | 1962-12-04 | Jr William H Crosby | Method and apparatus for serial sampling of intestinal juice |
US3367332A (en) | 1965-08-27 | 1968-02-06 | Gen Electric | Product and process for establishing a sterile area of skin |
US3520300A (en) | 1967-03-15 | 1970-07-14 | Amp Inc | Surgical sponge and suction device |
US3568675A (en) | 1968-08-30 | 1971-03-09 | Clyde B Harvey | Fistula and penetrating wound dressing |
FR2084475A5 (en) | 1970-03-16 | 1971-12-17 | Brumlik George | |
US3682180A (en) | 1970-06-08 | 1972-08-08 | Coilform Co Inc | Drain clip for surgical drain |
BE789293Q (en) | 1970-12-07 | 1973-01-15 | Parke Davis & Co | MEDICO-SURGICAL DRESSING FOR BURNS AND SIMILAR LESIONS |
US3826254A (en) | 1973-02-26 | 1974-07-30 | Verco Ind | Needle or catheter retaining appliance |
DE2527706A1 (en) | 1975-06-21 | 1976-12-30 | Hanfried Dr Med Weigand | DEVICE FOR THE INTRODUCTION OF CONTRAST AGENTS INTO AN ARTIFICIAL INTESTINAL OUTLET |
DE2640413C3 (en) | 1976-09-08 | 1980-03-27 | Richard Wolf Gmbh, 7134 Knittlingen | Catheter monitor |
NL7710909A (en) | 1976-10-08 | 1978-04-11 | Smith & Nephew | COMPOSITE STRAPS. |
GB1562244A (en) | 1976-11-11 | 1980-03-05 | Lock P M | Wound dressing materials |
US4080970A (en) | 1976-11-17 | 1978-03-28 | Miller Thomas J | Post-operative combination dressing and internal drain tube with external shield and tube connector |
US4139004A (en) | 1977-02-17 | 1979-02-13 | Gonzalez Jr Harry | Bandage apparatus for treating burns |
US4184510A (en) | 1977-03-15 | 1980-01-22 | Fibra-Sonics, Inc. | Valued device for controlling vacuum in surgery |
DE2741107A1 (en) | 1977-09-13 | 1979-03-29 | Heldt Gert Dipl Ing Dr | PROCEDURE FOR RELEASING INTERESTED COMPONENTS |
US4165748A (en) | 1977-11-07 | 1979-08-28 | Johnson Melissa C | Catheter tube holder |
US4256109A (en) | 1978-07-10 | 1981-03-17 | Nichols Robert L | Shut off valve for medical suction apparatus |
SE414994B (en) | 1978-11-28 | 1980-09-01 | Landstingens Inkopscentral | VENKATETERFORBAND |
BR7908937A (en) | 1978-12-06 | 1981-06-30 | Svedman Paul | DEVICE FOR TREATING FABRICS, FOR EXAMPLE, SKIN |
US4259959A (en) | 1978-12-20 | 1981-04-07 | Walker Wesley W | Suturing element |
US4266545A (en) | 1979-04-06 | 1981-05-12 | Moss James P | Portable suction device for collecting fluids from a closed wound |
US4284079A (en) | 1979-06-28 | 1981-08-18 | Adair Edwin Lloyd | Method for applying a male incontinence device |
US4261363A (en) | 1979-11-09 | 1981-04-14 | C. R. Bard, Inc. | Retention clips for body fluid drains |
US4419093A (en) | 1980-01-21 | 1983-12-06 | American Hospital Supply Corporation | Method of receiving and disposing of fluids from the body |
US4569348A (en) | 1980-02-22 | 1986-02-11 | Velcro Usa Inc. | Catheter tube holder strap |
WO1981002516A1 (en) | 1980-03-11 | 1981-09-17 | E Schmid | Cushion for holding an element of grafted skin |
US4297995A (en) | 1980-06-03 | 1981-11-03 | Key Pharmaceuticals, Inc. | Bandage containing attachment post |
US4333468A (en) | 1980-08-18 | 1982-06-08 | Geist Robert W | Mesentery tube holder apparatus |
US4392853A (en) | 1981-03-16 | 1983-07-12 | Rudolph Muto | Sterile assembly for protecting and fastening an indwelling device |
US4373519A (en) | 1981-06-26 | 1983-02-15 | Minnesota Mining And Manufacturing Company | Composite wound dressing |
US4392858A (en) | 1981-07-16 | 1983-07-12 | Sherwood Medical Company | Wound drainage device |
US4605339A (en) | 1981-07-29 | 1986-08-12 | Roger Bullivant Of Texas, Inc. | Situ pile construction in ground liable to uplift |
US4419097A (en) | 1981-07-31 | 1983-12-06 | Rexar Industries, Inc. | Attachment for catheter tube |
AU550575B2 (en) | 1981-08-07 | 1986-03-27 | Richard Christian Wright | Wound drainage device |
SE429197B (en) | 1981-10-14 | 1983-08-22 | Frese Nielsen | SAR TREATMENT DEVICE |
DE3146266A1 (en) | 1981-11-21 | 1983-06-01 | B. Braun Melsungen Ag, 3508 Melsungen | COMBINED DEVICE FOR A MEDICAL SUCTION DRAINAGE |
US4551139A (en) | 1982-02-08 | 1985-11-05 | Marion Laboratories, Inc. | Method and apparatus for burn wound treatment |
US4475909A (en) | 1982-05-06 | 1984-10-09 | Eisenberg Melvin I | Male urinary device and method for applying the device |
EP0100148B1 (en) | 1982-07-06 | 1986-01-08 | Dow Corning Limited | Medical-surgical dressing and a process for the production thereof |
NZ206837A (en) | 1983-01-27 | 1986-08-08 | Johnson & Johnson Prod Inc | Thin film adhesive dressing:backing material in three sections |
US4548202A (en) | 1983-06-20 | 1985-10-22 | Ethicon, Inc. | Mesh tissue fasteners |
US4540412A (en) | 1983-07-14 | 1985-09-10 | The Kendall Company | Device for moist heat therapy |
US4543100A (en) | 1983-11-01 | 1985-09-24 | Brodsky Stuart A | Catheter and drain tube retainer |
JPS60163214A (en) | 1984-02-03 | 1985-08-26 | Canon Electronics Inc | Magnetic head and its manufacturing method |
US4525374A (en) | 1984-02-27 | 1985-06-25 | Manresa, Inc. | Treating hydrophobic filters to render them hydrophilic |
GB2157958A (en) | 1984-05-03 | 1985-11-06 | Ernest Edward Austen Bedding | Ball game net support |
US4897081A (en) | 1984-05-25 | 1990-01-30 | Thermedics Inc. | Percutaneous access device |
US5215522A (en) | 1984-07-23 | 1993-06-01 | Ballard Medical Products | Single use medical aspirating device and method |
GB8419745D0 (en) | 1984-08-02 | 1984-09-05 | Smith & Nephew Ass | Wound dressing |
US4872450A (en) | 1984-08-17 | 1989-10-10 | Austad Eric D | Wound dressing and method of forming same |
US4826494A (en) | 1984-11-09 | 1989-05-02 | Stryker Corporation | Vacuum wound drainage system |
US4655754A (en) | 1984-11-09 | 1987-04-07 | Stryker Corporation | Vacuum wound drainage system and lipids baffle therefor |
US4605399A (en) | 1984-12-04 | 1986-08-12 | Complex, Inc. | Transdermal infusion device |
US5037397A (en) | 1985-05-03 | 1991-08-06 | Medical Distributors, Inc. | Universal clamp |
US4640688A (en) | 1985-08-23 | 1987-02-03 | Mentor Corporation | Urine collection catheter |
US4710165A (en) | 1985-09-16 | 1987-12-01 | Mcneil Charles B | Wearable, variable rate suction/collection device |
US4758220A (en) | 1985-09-26 | 1988-07-19 | Alcon Laboratories, Inc. | Surgical cassette proximity sensing and latching apparatus |
US4733659A (en) | 1986-01-17 | 1988-03-29 | Seton Company | Foam bandage |
EP0256060A1 (en) | 1986-01-31 | 1988-02-24 | OSMOND, Roger L. W. | Suction system for wound and gastro-intestinal drainage |
US4838883A (en) | 1986-03-07 | 1989-06-13 | Nissho Corporation | Urine-collecting device |
JPS62281965A (en) | 1986-05-29 | 1987-12-07 | テルモ株式会社 | Catheter and catheter fixing member |
US4696301A (en) | 1986-07-16 | 1987-09-29 | Barabe David J | Wound closing method |
GB8621884D0 (en) | 1986-09-11 | 1986-10-15 | Bard Ltd | Catheter applicator |
GB2195255B (en) | 1986-09-30 | 1991-05-01 | Vacutec Uk Limited | Apparatus for vacuum treatment of an epidermal surface |
US4743232A (en) | 1986-10-06 | 1988-05-10 | The Clinipad Corporation | Package assembly for plastic film bandage |
DE3634569A1 (en) | 1986-10-10 | 1988-04-21 | Sachse Hans E | CONDOM CATHETER, A URINE TUBE CATHETER FOR PREVENTING RISING INFECTIONS |
JPS63135179A (en) | 1986-11-26 | 1988-06-07 | 立花 俊郎 | Subcataneous drug administration set |
GB8628564D0 (en) | 1986-11-28 | 1987-01-07 | Smiths Industries Plc | Anti-foaming agent suction apparatus |
GB8706116D0 (en) | 1987-03-14 | 1987-04-15 | Smith & Nephew Ass | Adhesive dressings |
US4787888A (en) | 1987-06-01 | 1988-11-29 | University Of Connecticut | Disposable piezoelectric polymer bandage for percutaneous delivery of drugs and method for such percutaneous delivery (a) |
US4863449A (en) | 1987-07-06 | 1989-09-05 | Hollister Incorporated | Adhesive-lined elastic condom cathether |
US4828546A (en) | 1987-08-21 | 1989-05-09 | Surgidyne, Inc. | Bulb evacuator for closed wound suction |
US5176663A (en) | 1987-12-02 | 1993-01-05 | Pal Svedman | Dressing having pad with compressibility limiting elements |
US4906240A (en) | 1988-02-01 | 1990-03-06 | Matrix Medica, Inc. | Adhesive-faced porous absorbent sheet and method of making same |
US5007936A (en) | 1988-02-18 | 1991-04-16 | Cemax, Inc. | Surgical method for hip joint replacement |
US4985019A (en) | 1988-03-11 | 1991-01-15 | Michelson Gary K | X-ray marker |
GB8812803D0 (en) | 1988-05-28 | 1988-06-29 | Smiths Industries Plc | Medico-surgical containers |
US4919654A (en) | 1988-08-03 | 1990-04-24 | Kalt Medical Corporation | IV clamp with membrane |
US5000741A (en) | 1988-08-22 | 1991-03-19 | Kalt Medical Corporation | Transparent tracheostomy tube dressing |
JPH02270874A (en) | 1989-01-16 | 1990-11-05 | Roussel Uclaf | Azabicyclo compounds and their salts, their production, pharmaceutical compound containing them and their use as remedy |
US5019083A (en) | 1989-01-31 | 1991-05-28 | Advanced Osseous Technologies, Inc. | Implanting and removal of orthopedic prostheses |
US5045054A (en) | 1990-02-06 | 1991-09-03 | Advanced Osseous Technologies Inc. | Apparatus for implantation and extraction of osteal prostheses |
US5318570A (en) | 1989-01-31 | 1994-06-07 | Advanced Osseous Technologies, Inc. | Ultrasonic tool |
GB8906100D0 (en) | 1989-03-16 | 1989-04-26 | Smith & Nephew | Laminates |
US4969880A (en) | 1989-04-03 | 1990-11-13 | Zamierowski David S | Wound dressing and treatment method |
US5100396A (en) | 1989-04-03 | 1992-03-31 | Zamierowski David S | Fluidic connection system and method |
US5261893A (en) | 1989-04-03 | 1993-11-16 | Zamierowski David S | Fastening system and method |
US5527293A (en) | 1989-04-03 | 1996-06-18 | Kinetic Concepts, Inc. | Fastening system and method |
US4976726A (en) | 1989-04-27 | 1990-12-11 | Haverstock Charles B | Skin closure devices |
US5139023A (en) | 1989-06-02 | 1992-08-18 | Theratech Inc. | Apparatus and method for noninvasive blood glucose monitoring |
US5045075A (en) * | 1989-06-23 | 1991-09-03 | Renoble, N. V. - Division 1 | Surgical drain apparatus and method |
JP2719671B2 (en) | 1989-07-11 | 1998-02-25 | 日本ゼオン株式会社 | Wound dressing |
US5358494A (en) | 1989-07-11 | 1994-10-25 | Svedman Paul | Irrigation dressing |
US5232453A (en) | 1989-07-14 | 1993-08-03 | E. R. Squibb & Sons, Inc. | Catheter holder |
GB2235877A (en) | 1989-09-18 | 1991-03-20 | Antonio Talluri | Closed wound suction apparatus |
US5007921A (en) | 1989-10-26 | 1991-04-16 | Brown Alan W | Surgical staple |
US5134994A (en) | 1990-02-12 | 1992-08-04 | Say Sam L | Field aspirator in a soft pack with externally mounted container |
US5092858A (en) | 1990-03-20 | 1992-03-03 | Becton, Dickinson And Company | Liquid gelling agent distributor device |
USD337639S (en) | 1990-11-21 | 1993-07-20 | Zimmer, Inc. | Combined impactor and extractor for prosthetic implants |
US5112338A (en) | 1991-02-11 | 1992-05-12 | Anspach Iii William E | Surgical instrument for removing artificial acetabular cups |
US5149331A (en) | 1991-05-03 | 1992-09-22 | Ariel Ferdman | Method and device for wound closure |
US5169399A (en) | 1991-10-17 | 1992-12-08 | Boehringer Mannheim Corporation | Acetabular cup impactor |
US5278100A (en) | 1991-11-08 | 1994-01-11 | Micron Technology, Inc. | Chemical vapor deposition technique for depositing titanium silicide on semiconductor wafers |
US5645081A (en) | 1991-11-14 | 1997-07-08 | Wake Forest University | Method of treating tissue damage and apparatus for same |
US5636643A (en) | 1991-11-14 | 1997-06-10 | Wake Forest University | Wound treatment employing reduced pressure |
US5279550A (en) | 1991-12-19 | 1994-01-18 | Gish Biomedical, Inc. | Orthopedic autotransfusion system |
CA2087132A1 (en) | 1992-01-31 | 1993-08-01 | Michael S. Williams | Stent capable of attachment within a body lumen |
US5507833A (en) | 1992-02-10 | 1996-04-16 | Kim-Med, Inc. | Hip replacement system and method for implanting the same |
US5167613A (en) | 1992-03-23 | 1992-12-01 | The Kendall Company | Composite vented wound dressing |
FR2690617B1 (en) | 1992-04-29 | 1994-06-24 | Cbh Textile | TRANSPARENT ADHESIVE DRESSING. |
US5275585A (en) * | 1992-06-03 | 1994-01-04 | Zimmer Patient Care | Autotransfusion system with portable detachable vacuum source |
DE4221006C2 (en) | 1992-06-26 | 1994-06-30 | S & G Implants Gmbh | Implant to replace a back patella part |
US5678564A (en) | 1992-08-07 | 1997-10-21 | Bristol Myers Squibb | Liquid removal system |
US5383897A (en) | 1992-10-19 | 1995-01-24 | Shadyside Hospital | Method and apparatus for closing blood vessel punctures |
DE4306478A1 (en) | 1993-03-02 | 1994-09-08 | Wolfgang Dr Wagner | Drainage device, in particular pleural drainage device, and drainage method |
DE4310968C2 (en) | 1993-04-03 | 1995-08-10 | Kubein Meesenburg Dietmar | Artificial joint as an endoprosthesis for the human patella joint |
US5342376A (en) | 1993-05-03 | 1994-08-30 | Dermagraphics, Inc. | Inserting device for a barbed tissue connector |
US6241747B1 (en) | 1993-05-03 | 2001-06-05 | Quill Medical, Inc. | Barbed Bodily tissue connector |
US5344415A (en) | 1993-06-15 | 1994-09-06 | Deroyal Industries, Inc. | Sterile system for dressing vascular access site |
US5437651A (en) | 1993-09-01 | 1995-08-01 | Research Medical, Inc. | Medical suction apparatus |
US5584859A (en) | 1993-10-12 | 1996-12-17 | Brotz; Gregory R. | Suture assembly |
US5549584A (en) | 1994-02-14 | 1996-08-27 | The Kendall Company | Apparatus for removing fluid from a wound |
US6159246A (en) | 1994-04-19 | 2000-12-12 | Mendes; David | Surgical method and tool for repairing a patella of the knee joint |
IL109344A (en) | 1994-04-19 | 1998-02-22 | Mendes David | Prosthetic patella implant of the knee joint |
US5607388A (en) | 1994-06-16 | 1997-03-04 | Hercules Incorporated | Multi-purpose wound dressing |
US5556375A (en) | 1994-06-16 | 1996-09-17 | Hercules Incorporated | Wound dressing having a fenestrated base layer |
US5664270A (en) | 1994-07-19 | 1997-09-09 | Kinetic Concepts, Inc. | Patient interface system |
GB9416215D0 (en) | 1994-08-11 | 1994-10-05 | Howmedica | Acetabular bone graft impactor |
PT1219311E (en) | 1994-08-22 | 2004-11-30 | Kci Licensing Inc | SUCCESS PUMP FOR USE WITH A DISCHARGEABLE LIQUID CONTAINER APPARATUS FOR WOUND FLUIDS |
US5601560A (en) | 1994-10-07 | 1997-02-11 | The Anspach Effort, Inc. | Tool bit for a motor driven surgical instrument |
DE29504378U1 (en) | 1995-03-15 | 1995-09-14 | Mtg Medizinisch Tech Geraeteba | Electronically controlled low-vacuum pump for chest and wound drainage |
DE19517699C2 (en) * | 1995-05-13 | 1999-11-04 | Wilhelm Fleischmann | Device for vacuum sealing a wound |
US5716360A (en) | 1995-06-30 | 1998-02-10 | U.S. Medical Products | Patella recession instrument and method for anatomically-shaped patellar prostheses |
USD372309S (en) | 1995-07-06 | 1996-07-30 | Zimmer, Inc. | Orthopaedic broach impactor |
US5800546A (en) | 1995-08-14 | 1998-09-01 | Smith & Nephew, Inc. | Impactor apparatus for assembling modular orthopedic prosthesis components |
JPH11512624A (en) | 1995-09-18 | 1999-11-02 | イグザクテック,インコーポレーテッド | Counterbalance oscillating surgical saw |
GB9523253D0 (en) | 1995-11-14 | 1996-01-17 | Mediscus Prod Ltd | Portable wound treatment apparatus |
US6620132B1 (en) | 1996-01-11 | 2003-09-16 | Joseph I. Skow | Surgical irrigation device |
US5628735A (en) | 1996-01-11 | 1997-05-13 | Skow; Joseph I. | Surgical device for wicking and removing fluid |
US5827246A (en) | 1996-02-28 | 1998-10-27 | Tecnol Medical Products, Inc. | Vacuum pad for collecting potentially hazardous fluids |
US5941859A (en) | 1997-03-17 | 1999-08-24 | Lerman; Benjamin S. | Wound irrigation shield with fluid scavenging |
US5931855A (en) | 1997-05-21 | 1999-08-03 | Frank Hoffman | Surgical methods using one-way suture |
DE19722075C1 (en) | 1997-05-27 | 1998-10-01 | Wilhelm Dr Med Fleischmann | Medication supply to open wounds |
NL1006457C2 (en) | 1997-07-03 | 1999-01-05 | Polymedics N V | Drainage system to be used with an open wound, element used for applying a drainage pipe or hose and method for applying the drainage system. |
US6135116A (en) | 1997-07-28 | 2000-10-24 | Kci Licensing, Inc. | Therapeutic method for treating ulcers |
US6293929B1 (en) | 1997-09-02 | 2001-09-25 | Steven M. Smith | Wound irrigation apparatus |
AU755496B2 (en) | 1997-09-12 | 2002-12-12 | Kci Licensing, Inc. | Surgical drape and suction head for wound treatment |
GB9719520D0 (en) | 1997-09-12 | 1997-11-19 | Kci Medical Ltd | Surgical drape and suction heads for wound treatment |
US6071267A (en) * | 1998-02-06 | 2000-06-06 | Kinetic Concepts, Inc. | Medical patient fluid management interface system and method |
US6669735B1 (en) | 1998-07-31 | 2003-12-30 | Davol, Inc. | Prosthesis for surgical treatment of hernia |
US6126659A (en) | 1998-09-30 | 2000-10-03 | Depuy Orthopaedics, Inc. | Impaction instruments |
US6488643B1 (en) | 1998-10-08 | 2002-12-03 | Kci Licensing, Inc. | Wound healing foot wrap |
US6113618A (en) | 1999-01-13 | 2000-09-05 | Stryker Corporation | Surgical saw with spring-loaded, low-noise cutting blade |
US6146423A (en) | 1999-01-28 | 2000-11-14 | Implex Corporation | Patella replacement apparatus |
US6190392B1 (en) | 1999-02-03 | 2001-02-20 | Biomet, Inc. | Method and apparatus for ultrasonic removal of bone cement material |
US6430427B1 (en) | 1999-02-25 | 2002-08-06 | Electronics And Telecommunications Research Institute | Method for obtaining trabecular index using trabecular pattern and method for estimating bone mineral density using trabecular indices |
US6355215B1 (en) | 1999-03-10 | 2002-03-12 | Implex Corp. | Wear-resistant olefinic medical implant and thermal treatment container therefor |
US6287316B1 (en) | 1999-03-26 | 2001-09-11 | Ethicon, Inc. | Knitted surgical mesh |
US6856821B2 (en) | 2000-05-26 | 2005-02-15 | Kci Licensing, Inc. | System for combined transcutaneous blood gas monitoring and vacuum assisted wound closure |
US7799004B2 (en) | 2001-03-05 | 2010-09-21 | Kci Licensing, Inc. | Negative pressure wound treatment apparatus and infection identification system and method |
US6695823B1 (en) | 1999-04-09 | 2004-02-24 | Kci Licensing, Inc. | Wound therapy device |
US6203563B1 (en) | 1999-05-26 | 2001-03-20 | Ernesto Ramos Fernandez | Healing device applied to persistent wounds, fistulas, pancreatitis, varicose ulcers, and other medical or veterinary pathologies of a patient |
US6991643B2 (en) | 2000-12-20 | 2006-01-31 | Usgi Medical Inc. | Multi-barbed device for retaining tissue in apposition and methods of use |
US6179804B1 (en) | 1999-08-18 | 2001-01-30 | Oxypatch, Llc | Treatment apparatus for wounds |
US6859285B1 (en) | 1999-08-31 | 2005-02-22 | Og Technologies, Inc. | Optical observation device and method for observing articles at elevated temperatures |
US6190391B1 (en) | 1999-10-01 | 2001-02-20 | Bristol-Myers Squibb Company | Method of preparing a resected posterior surface of a patella to receive a prosthetic element |
GB9926538D0 (en) * | 1999-11-09 | 2000-01-12 | Kci Medical Ltd | Multi-lumen connector |
US6824533B2 (en) | 2000-11-29 | 2004-11-30 | Hill-Rom Services, Inc. | Wound treatment apparatus |
ATE400315T1 (en) | 1999-11-29 | 2008-07-15 | Hill Rom Services Inc | DEVICE FOR TREATING A WOUND |
KR100343777B1 (en) | 1999-12-10 | 2002-07-20 | 한국전자통신연구원 | Method for calibrating trabecular index using sawtooth-shaped rack |
US6270517B1 (en) | 2000-02-04 | 2001-08-07 | Gregory R. Brotz | Suture assembly and method |
WO2001062328A1 (en) | 2000-02-24 | 2001-08-30 | Venetec International, Inc. | Universal catheter anchoring system |
US6676706B1 (en) | 2000-04-26 | 2004-01-13 | Zimmer Technology, Inc. | Method and apparatus for performing a minimally invasive total hip arthroplasty |
GB0011202D0 (en) * | 2000-05-09 | 2000-06-28 | Kci Licensing Inc | Abdominal wound dressing |
US6645226B1 (en) | 2000-05-19 | 2003-11-11 | Coapt Systems, Inc. | Multi-point tension distribution system device and method of tissue approximation using that device to improve wound healing |
US6485503B2 (en) | 2000-05-19 | 2002-11-26 | Coapt Systems, Inc. | Multi-point tissue tension distribution device, a brow and face lift variation, and a method of tissue approximation using the device |
CA2409907A1 (en) | 2000-05-22 | 2001-11-29 | Arthur C. Coffey | Combination sis and vacuum bandage and method |
US6503281B1 (en) | 2000-08-25 | 2003-01-07 | Thomas H. Mallory | Total hip replacement |
US20020029063A1 (en) | 2000-09-05 | 2002-03-07 | Wittmann Dietmar H. | Prosthesis for abdominal surgery |
US6500209B1 (en) | 2000-09-29 | 2002-12-31 | Depuy Orthopaedics, Inc. | Intramedullary centralizer having fins of varying length and associated method of implanting an orthopaedic component into a patient |
US6685681B2 (en) | 2000-11-29 | 2004-02-03 | Hill-Rom Services, Inc. | Vacuum therapy and cleansing dressing for wounds |
US6540705B2 (en) | 2001-02-22 | 2003-04-01 | Core Products International, Inc. | Ankle brace providing upper and lower ankle adjustment |
US7108683B2 (en) | 2001-04-30 | 2006-09-19 | Kci Licensing, Inc | Wound therapy and tissue management system and method with fluid differentiation |
DE10123066A1 (en) | 2001-05-11 | 2002-11-14 | Basf Ag | Process for the production of higher alpha, beta-unsaturated alcohols |
US6726706B2 (en) | 2001-06-26 | 2004-04-27 | Steven Dominguez | Suture tape and method for use |
ES2183736B1 (en) | 2001-08-03 | 2004-06-16 | Bard De España, S.A. | IMPLANTABLE WALL PROTESIS IN THE FOCUS OF THE WOUND FOR REINFORCEMENT OF ABDOMINAL WALL CLOSURE. |
US6589285B2 (en) | 2001-11-20 | 2003-07-08 | Centerpulse Orthopedics Inc. | Apparatus for, and method of, providing hip prosthesis implantation |
US6838591B2 (en) * | 2002-05-06 | 2005-01-04 | Tyco Healthcare Retail Services, Ag | Absorbent article with C-fold layer fluid acquisition system, C-fold layer fluid acquisition system for use in absorbent articles and method of making the same |
US7381211B2 (en) | 2002-08-21 | 2008-06-03 | Kci Licensing, Inc. | Medical closure screen device and method |
US7520872B2 (en) * | 2002-09-13 | 2009-04-21 | Neogen Technologies, Inc. | Closed wound drainage system |
US7976519B2 (en) * | 2002-12-31 | 2011-07-12 | Kci Licensing, Inc. | Externally-applied patient interface system and method |
EP1578477B2 (en) | 2002-12-31 | 2020-05-06 | KCI Licensing, Inc. | A dressing assembly for a closed wound or incision |
US6951553B2 (en) * | 2002-12-31 | 2005-10-04 | Kci Licensing, Inc | Tissue closure treatment system and method with externally-applied patient interface |
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2005
- 2005-10-03 US US11/242,508 patent/US7976519B2/en active Active
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2006
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