CA2425059A1 - Neurosurgical device for thermal therapy including spiral element - Google Patents
Neurosurgical device for thermal therapy including spiral element Download PDFInfo
- Publication number
- CA2425059A1 CA2425059A1 CA002425059A CA2425059A CA2425059A1 CA 2425059 A1 CA2425059 A1 CA 2425059A1 CA 002425059 A CA002425059 A CA 002425059A CA 2425059 A CA2425059 A CA 2425059A CA 2425059 A1 CA2425059 A1 CA 2425059A1
- Authority
- CA
- Canada
- Prior art keywords
- thermal
- fluid
- surface area
- housing
- thermally
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- 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
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/12—Devices for heating or cooling internal body cavities
-
- 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
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/12—Devices for heating or cooling internal body cavities
- A61F7/123—Devices for heating or cooling internal body cavities using a flexible balloon containing the thermal element
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00022—Sensing or detecting at the treatment site
- A61B2017/00084—Temperature
-
- 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
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
-
- 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
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
- A61F2007/0056—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water for cooling
-
- 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
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
- A61F2007/0075—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating using a Peltier element, e.g. near the spot to be heated or cooled
-
- 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
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/10—Cooling bags, e.g. ice-bags
- A61F2007/101—Cooling bags, e.g. ice-bags for cooling organs in the body before or during surgery
-
- 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
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/12—Devices for heating or cooling internal body cavities
- A61F2007/126—Devices for heating or cooling internal body cavities for invasive application, e.g. for introducing into blood vessels
Abstract
A device for thermally affecting tissue having a thermally transmissive contact member being in thermal communication with a thermal member and a surface area expansion element configured for contacting a tissue. The contact member and thermal member are disposed within a housing and the surface area expansion element is coupleable to the housing. The housing is configured to fit within an opening in a skull.
Description
NEUROSURGICAL DEVICE FOR THERMAL THERAPY
INCLUDING SPIRAL ELEMENT
CROSS-REFERENCE TO RELATED APPLICATION
This application is related to and claims priority to U.S. Provisional Patent Application Serial No. 60/238,314, filed 10/05/00, entitled Systems and Methods for Controlling Temperature of Brain Tissue, the entirety of which is incorporated herein by reference.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
n/a FIELD OF THE INVENTION
1o The present invention relates to systems and methods for controlling brain tissue temperature, and in particular to systems and methods for subcranial temperature control of brain tissue through the use of contact cooling devices.
BACKGROUND OF THE INVENTION
is Researchers and physicians have long recognized the consequences of reduction of body temperature in mammals, including induction of stupor, tissue damage, and death. Application of freezing and near freezing temperatures to selected tissue is commonly employed to preserve tissue and cell (e.g. sperm banks); and application of extreme cold (far below freezing) is effective for tissue ablation. However, localized cooling (not freezing) of tissue has generally 2o been limited to the placement of an "ice-pack" or a "cold compress" on injured or inflamed tissue to reduce swelling and the pain associated therewith. Localized cooling of internal organs, such as the brain, has remained in large part unexplored.
For example, "brain cooling" has been induced by cooling the blood supply to the brain for certain therapies. However, as the effects of the cool blood cannot be easily localized, there is 25 a systemic temperature reduction throughout the body that can lead to cardiac arrhythmia, immune suppression and coagulopathies.
Attempts have been made to localize cooling of the brain with wholly external devices, such as cooling helmets or neck collars. However, there are disadvantages associated with external cooling to affect internal tissue. For example, external methods do not provide adequate resolution for selective tissue cooling, and some of the same disadvantages that are associated with systemic cooling can occur when using external cooling devices.
It is therefore desirable to obtain improved devices and methods that allow for localized brain cooling without the disadvantages of the known systemic and external devices and techniques.
SUMMARY OF THE INVENTION
The present invention overcomes the disadvantages of known systemic and external devices and techniques by providing localized brain cooling with a device placed through the 1o skull.
The present invention provides a device and method for localized temperature control of a body part, such as the brain. In an exemplary embodiment, a device for thermally affecting tissue of a patient includes a housing defining an interior volume that is at least partially insertable into an exterior opening in a patient, such as a burr hole though the skull. A
thermal member 15 positioned within the interior volume of the housing includes a thermal input side and a thermal output side to impart a thermal change to the tissue. An exemplary method of treatment using the device includes the steps of exposing tissue to be thermally affected;
attaching a thermal device to an anchor point of the body; positioning the thermal member near or on the tissue; and operating the thermal member to thermally change the temperature of the tissue.
BRIEF DESCRIPTION OF TIDE DRAWINGS
A more complete understanding of the present invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
FIG. 1 is a perspective view of an exemplary embodiment of a device constructed in accordance with the principles of the present invention;
FIG. 2 is a section view taken along section 2 - 2 of FIG. 1;
FIG. 3 is a side view of a base of the device;
FIG. 4 illustrates a contact member on the bottom of the device of FIG. 1;
3o FIG. 5 is an exploded view of another embodiment of a device constructed in accordance with the principles of the invention;
INCLUDING SPIRAL ELEMENT
CROSS-REFERENCE TO RELATED APPLICATION
This application is related to and claims priority to U.S. Provisional Patent Application Serial No. 60/238,314, filed 10/05/00, entitled Systems and Methods for Controlling Temperature of Brain Tissue, the entirety of which is incorporated herein by reference.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
n/a FIELD OF THE INVENTION
1o The present invention relates to systems and methods for controlling brain tissue temperature, and in particular to systems and methods for subcranial temperature control of brain tissue through the use of contact cooling devices.
BACKGROUND OF THE INVENTION
is Researchers and physicians have long recognized the consequences of reduction of body temperature in mammals, including induction of stupor, tissue damage, and death. Application of freezing and near freezing temperatures to selected tissue is commonly employed to preserve tissue and cell (e.g. sperm banks); and application of extreme cold (far below freezing) is effective for tissue ablation. However, localized cooling (not freezing) of tissue has generally 2o been limited to the placement of an "ice-pack" or a "cold compress" on injured or inflamed tissue to reduce swelling and the pain associated therewith. Localized cooling of internal organs, such as the brain, has remained in large part unexplored.
For example, "brain cooling" has been induced by cooling the blood supply to the brain for certain therapies. However, as the effects of the cool blood cannot be easily localized, there is 25 a systemic temperature reduction throughout the body that can lead to cardiac arrhythmia, immune suppression and coagulopathies.
Attempts have been made to localize cooling of the brain with wholly external devices, such as cooling helmets or neck collars. However, there are disadvantages associated with external cooling to affect internal tissue. For example, external methods do not provide adequate resolution for selective tissue cooling, and some of the same disadvantages that are associated with systemic cooling can occur when using external cooling devices.
It is therefore desirable to obtain improved devices and methods that allow for localized brain cooling without the disadvantages of the known systemic and external devices and techniques.
SUMMARY OF THE INVENTION
The present invention overcomes the disadvantages of known systemic and external devices and techniques by providing localized brain cooling with a device placed through the 1o skull.
The present invention provides a device and method for localized temperature control of a body part, such as the brain. In an exemplary embodiment, a device for thermally affecting tissue of a patient includes a housing defining an interior volume that is at least partially insertable into an exterior opening in a patient, such as a burr hole though the skull. A
thermal member 15 positioned within the interior volume of the housing includes a thermal input side and a thermal output side to impart a thermal change to the tissue. An exemplary method of treatment using the device includes the steps of exposing tissue to be thermally affected;
attaching a thermal device to an anchor point of the body; positioning the thermal member near or on the tissue; and operating the thermal member to thermally change the temperature of the tissue.
BRIEF DESCRIPTION OF TIDE DRAWINGS
A more complete understanding of the present invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:
FIG. 1 is a perspective view of an exemplary embodiment of a device constructed in accordance with the principles of the present invention;
FIG. 2 is a section view taken along section 2 - 2 of FIG. 1;
FIG. 3 is a side view of a base of the device;
FIG. 4 illustrates a contact member on the bottom of the device of FIG. 1;
3o FIG. 5 is an exploded view of another embodiment of a device constructed in accordance with the principles of the invention;
2 FIG. 6 is a perspective view of yet another device constructed in accordance with the principles of the invention;
FIG. 7 is a section view taken along section 7 - 7 of the devise shown in FIG.
8;
FIG. 8 is a sectional side view of an expansion element of the device of FIG.
9;
FIG. 9 is a sectional end view of an expansion element of the device shown in FIG. 7;
FIG. 10 is a sectional view of an alternative arrangement of a device constructed in accordance with the principles of the present invention;
FIG. 11 illustrates in cross-section yet another arrangement of a device constructed in accordance with the principles of the present invention;
to FIG. 12 depicts the exemplary device of FIG.1 inserted through a skull;
FIG. 13 depicts the exemplary device of FIG. 8 inserted through a skull;
FIG. 14 is a perspective view of an exemplary surface area expansion element;
and FIG. 15 is a perspective view of another exemplary surface area expansion element.
DETAILED DESCRIPTION OF THE INVENTION
The present invention provides a device for applying thermal energy to a localized region of a body tissue. Referring now to the drawing figures in which like reference designators refer to like elements, there is shown FIG. 1 a perspective view of an exemplary embodiment of a device constructed in accordance with the principles of the present invention and designated 2o generally as device 10. The device 10 includes a housing 12 with a first end 14, a second end 16 and an optional circulation vent 18 through which a thermally conductive fluid can pass. The housing 12 can be constructed of any suitable material, for example metals, plastics or a combination thereof. It is contemplated that the housing 12 has a diameter "D", measured at the widest portion of the device, from approximately one centimeter to approximately ten centimeters. In an exemplary embodiments the diameter ranges from approximately 1 centimeters to 1.5 centimeters. Optional radial threads 20 are provided on the exterior of the housing 12 to facilitate attachment to bone structure such as a skull.
However, it is contemplated that non-threaded arrangements can also be provided or coupled to or on the housing 12, for example, flutes, barbs, ridges or other anchoring elements. The term fluid as used herein refers to 3o a substance in a liquid state, a gaseous state, a transition state between liquid and gas, or a combination of any of the preceding.
FIG. 2 is a sectional view of the device of FIG. 1, taken along line 2 - 2.
The housing 12 is a generally cylindrical body having a wall that defines an interior space 24. Provided within the interior space 24, starting at the first end 14 and moving to the second end 16, is a contact member 26 which can be configured to directly contact a tissue or to contact an intermediate material. The contact member 26 can be constructed of any thermally conductive material, for example, stainless steel, aluminum, copper, titanium, various polymers or other such materials.
Additionally, adjacent the contact member 26 is a thermal member 28. The thermal member 28 has a thermal input side 32 in thermal communication with the contact member 26 and a thermal output side 34. The thermal member 28 can be a thermo-electric cooler as is known in the art, for 1o example, a pettier cooler. Optionally, a thermal dissipation member 33 is provided in thermal communication with the output side 32 of the thermal member 28. Such devices are known in the art, for example a common thermal dissipation member is a heat sink.
However, many alternate components for dissipating thermal energy can be provided. Further, it is contemplated that fewer elements can be provided, for example the thermal member 28 can be configured to act as a thermal contact member without the aid of a separate element.
Further provided within the housing 12 in the interior space 24 is a fluid circulation member 30. The term "fluid" as used herein generally refers to any flowable substance, including but not limited to gasses and liquids. An exemplary fluid circulation member 30 is a cooling fan. The fluid circulation member 30 is positioned such that it circulates a fluid, such as 2o air, across the thermal output side 32 of the thermal member 28 or the optional thermal dissipation member 33 if provided, thereby removing thermal energy dissipated by the thermal member 28. Alternatively, it is contemplated that a pump, used in association with a thermally conductive liquid, be provided to dissipate thermal energy generated by the output side 32 of the thermal member 28. In addition, an optional membrane 36 is provided in thermal communication with the contact member 26. Membrane 36 can be constructed of any bio-compatible material and can be constructed to directly contact a tissue.
Referring to FIG. 2, the operation of an exemplary device is now discussed in detail.
Power is supplied to the thermal member 28 through electrical wires (not shown) which in turn creates a thermal input side 32 and a thermal output side 34 to the thermal member 28 (the 3o thermal member discussed here is a pettier cooler and its function is well known in the art). fly operation of the thermal member 28, the thermal input side 32 has a reduced temperature relative to the thermal output side 34 which causes a cooling effect at the thermal input side 32. The thermal input side 32 being in thermally conductive contact with the contact member 26, thereby causes a reduction of the relative temperature of the contact member 26. The output side 34 being in thermally conductive contact with the optional thermal dissipation member 33 thereby raises the relative temperature of the thermal dissipation member 33 (creating heat).
Additionally, a current or activation energy is supplied to the fluid distribution member 30 to thereby circulate air through the thermal dissipation member 33 and out of housing 12 through the circulation vent 18. Heat dissipated by the thermal dissipation member 33 is removed and discharged from the housing 12 to maintain a reduced temperature at the contact member 26. As such, the concepts of the present invention provide a device 10 for localized cooling of a tissue in to a compact configuration.
FIG. 3 is a side view of the contact member 26 showing a contact side 27 having a concave surface as illustrated in phantom. The extent of curvature can modified to accommodate the requirements of the therapy and the tissue site to be treated. The depth of the cavity formed by the concave surface can be measured from the contact side 27 peapendicular to the center 29 of the concave region. In exemplary embodiments the concave distance ranges from approximately 0.001 inches to approximately 0.05 inches. In the embodiment shown in FIG. 3, which is used to treat dura matter, the concave distance is approximately 0.02 inches.
FIG. 4 illustrates the first end 14 of the device 10, wherein a square-shaped contact member 26 is disposed within the housing 12. Optionally, one or more access ports 38 are 2o provided through the housing 12 to allow passage or placement of devices such as specialty neuro-catheters, thermocouple probes, temperature sensors, and pressure sensors. Alternatively, an insert 40 can be provided to be completely or partially obstruct the access port 38. The insert 40 can be constructed from any suitable material, for example, rubber, silicone, aluminum or other such materials. While FIG. 4 shows a square-shaped contact member 26, it is contemplated that various other shapes can be provided. Additionally, an access port (not shown) can be provided through the contact member 26 itself to accommodate accessory devices as discussed above.
FIG. 5 is an exploded view of another configuration for the device, wherein a housing 48 has a wall 50 that defines an inner volume 52 to receive a thermal cartridge 58. The housing 3o includes longitudinal grooves 54 on the inner surface 53 of the wall 50.
Radial threads 56 can be provided for securing the housing 48 to the skull. The thermal cartridge 58 has axial slots 60 configured to be slidably engagable with axial grooves 54 of the housing 48.
The thermal cartridge 58 includes the exemplary elements as discussed above for applying thermal energy to a tissue site, for example, a contact member, a thermal member, and a cooling fan (not shown). In practice, the housing 48 is secured within a skull opening by screwing the radial threads into the bone. The thermal cartridge 58 is then inserted into the inner volume 50 of the housing 48 while aligning the axial slots 60 with the axial grooves 52. The thermal cartridge 58 can be slidably adjusted within the insert housing 48 in order to specifically locate the contact member against the dare matter.
Additionally, the thermal cartridge 58 can be moved in response to dare swelling or shrinkage that may occur during treatment. ~nce a desired distance of insertion is reached, the 1o thermal cartridge 58 is held in position by a set screw 63 through a screw opening 65 in the insert housing 48. While FIG. 7 illustrates an axial groove and slot arrangement, it is contemplated that alternate configurations can be provided. For example, a spiral groove and slot arrangement can be provided which would provide insertion depth adjustment via rotation of the thermal cartridge relative to the housing.
15 FIG. 6 is a perspective view of another feature of the invention, wherein a surface area expansion element 62 is disposed at the first end 14 of the housing 12. The surface area expansion element 62 provides a tissue contact area that is larger than the contact member 26 (not shown). The surface area expansion element 62 has a height "H" measured from a top 64 to a tissue contact area 66 of the surface area expansion element 62 and a deployed diameter "dd"
2o measured from the widest points at a periphery of the surface area expansion element 62. In an exemplary embodiment, the surface area expansion element 62 has a height to width ratio of approximately one to two. Further, a surface area expansion element 62 constructed in accordance the principles of the present invention can have a deployed diameter dd ranging in size from 5 to 200 mm. An exemplary embodiment has a deployed diameter 34 of 48 mm.
25 Another exemplary embodiment has a deployed diameter 34 of 64 mm. Further, an exemplary embodiment can have a height H ranging in size from 1 to 10 mm. In one exemplary embodiment the height H is approximately 4 mm.
The surface area expansion element 48 can be provided by several different structures, such as an inflatable plenum such as a bladder or balloon. Alternatively, the expansion element 30 48 can include foldable, rollable, or compressible, ribbons or resilient thermally-conductive structures. Exemplary resilient materials include rubber, silicon, flexible polymers and other materials known in the art. Thus, the surface area expansion element 62 is provided with. a structure that allows it to be inserted through a small opening in a body and then deployed to increase the tissue contact area 66. The tissue contact area 66 can have,a shape ranging from substantially flat to concave.
FIG. 7 is a view taken along section 7 - 7 of the device shown in FIG. 6 to show the s hollow interior of the surface area expansion element 62. As illustrated, the surface area expansion element 62 has a wall 68 which defines an interior volume 70 which is filled with a thermally transmissive fluid 72. The contact member 26 is in thermal contact with the interior volume 70 'via the thermally transmissive fluid 72 at an interface 74. The contact member 26 is in~turn in thermal contact with the thermal member 28. ~ptionally, a thermal dissipation member 33 can be provided in thermal communication with the output side 34 of the thermal member 28.
Further, the fluid circulation member 30 is provided in fluid communication with the thermal dissipation member 33. In practice, the cooling of the contact member 26 in turn cools the thermally transmissive fluid 72. The thermally transmissive fluid cools the tissue contact area 66 which in turn cools the contacted tissue. The surface area expansion element 62 can have other shapes, such as round, oval, oblong, spider-like, or amorphous.
FIG. 8 is a sectional view of the expansion element 62 shown in FIG. 9. The expansion element 62 is attached to the first end 14 of the housing 12 and includes a wall 68 that defines an interior volume 70. A hollow inj ection member 76 having a proximal end and a distal end is disposed within the interior volume 70. A circulation member 78 having an outlet 80 and an inlet 82 is in fluid communication with the proximal end of the injection member 76 via the outlet 80.
An example of a circulation member 78 is a fluid pump. An exemplary thermally transmissive fluid 72 is a saline solution. The arrangement of the circulation member 78, outlet 80, injection member 76, inlet 82, and interior volume 70 define a circulation circuit.
In operation, thermally transmissive fluid 72 is provided within the interior volume 70 and is drawn into the circulation member 78 via the inlet 82. The fluid 72 is then directed through the outlet 80, the proximal end of the injection member 76, and the distal end, where it is expelled into the interior volume 70. Alternately, the circulation member 78 can be in thermal contact with the thermal element 28, thereby affecting the temperature of the thermally transmissive fluid directly, or the thermally transmissive fluid can be in direct contact with the 3o contact member 26. It is contemplated that the circulation member 78 can be provided away from and separate from the device. It is further contemplated that such a separate circulation member 78 could reside external to the body to be treated and be in fluid communication with the device via various methods that are known in the art.
FIG. 9 is an end view of the device in which several injection members 76 are provided within the interior volume 70 to direct thermally transmissive fluid within the interior volume 70.
FIG. 10 is a sectional view of an alternate arrangement of the thermal cartridge 58 shown in FIG. 7. In this configuration, the cartridge 58 includes a wall 84, a proximal end 86, and a distal end 88; wherein the wall defines a space 90 to receive a thermal bridge 92, contact member 26, and thermal member 28. The contact member 26 is attached to the proximal end 86 of the cartridge 58. Near the distal end 88 of the cartridge 58, the thermal member 28 is provided 1 o within the space 90 adj acent and in thermal communication with the contact member 26. Still further toward the distal end 88, the thermal bridge 92 is in thermal communication with the thermal member 28. Attached to the distal end 88, and in thermal communication with the thermal bridge 92, is a thermal dissipation element 33 which is coupled to a fluid circulation member 30.
15 The thermal bridge 92 is provided to allow the thermal dissipation member 33 to be distanced from the thermal member 28. In some embodiments it is desirable to have thermal dissipation and fluid circulation members which are larger than the diameter of the housing of the device. By providing a thermal bridge 92, this is possible. While the thermal bridge 92 is described in association with the device shown in FIG. 7, it is contemplated that the thermal 2o bridge 92 and expanded thermal dissipation member 33 can be provided in all of the embodiments of the invention.
FIG. 11 illustrates another cartridge configuration for thermal transfer, wherein a fluid conduit 94 is provided in thermal communication with the thermal output side 34 of a thermal dissipation member 33. In practice, a thermally transmissive fluid is circulated through the fluid 25 conduit 94. When the fluid transits the portion of the fluid conduit that is in thermal communication with the thermal output side 34, thermal energy is dissipated to the fluid which is then circulated to a remote fluid chiller and then re-circulated through the fluid conduit 94.
FIG. 12 depicts a device 10, such as shown in FIG. 1, screwed into a burr hole 96 in a skull 98, wherein a contact element 26 is in thermally conductive contact with dare tissue 100 at 3o a location where treatment is desired.
FIG. 13 depicts a device 10, such as shown in FIG. 8, shown screwed into a burr hole in a skull 98. Attached to the first end 14 of the device 10 is a surface area expansion element 62.
The surface area expansion element 62 is configured to fit within a space 102 between the dare tissue 100 and the skull 96 without substantially damaging dare tissue 100.
For example, in order to fit within the space 102, the surface area expansion element 62 can have a flattened configuration as described in more detail herein. In an alternate embodiment, such a surface area expansion element 62 can be configured to be placed into subdural space within a body to be treated.
The present invention provides a thermocooler based device which is used to impart a thermal change to living tissue. The present invention advantageously provides a user an ability to control the temperature of a localized region of brain tissue. A procedure using the to thermocooling device is accomplished by inserting the device into a burr hole in the skull. An exemplary application is to directly contact the brain tissue with the thermocooling device cooling plate in order to lower the localized brain temperature as a neuroprotective measure in a post-stroke condition. Alternatively, the thermocooling device 10 is used to cool localized regions of the brain in a brain trauma patient as a way of lowering cerebral metabolic requirements and minimizing brain edema. Furthermore, the thermocooling device 10 can be used in any post-operative trauma situation when the possibility of cerebral edema exists such that the cerebral edema is desired to be abated or minimized. The above described device can be used in other parts of the body in instances where local tissue temperature needs to be controlled or modulated. In such instances, thermal therapy may involve using either chilled or heated 2o portions of the device to achieve the desired result.
FIG. 14 is a perspective view of an alternate surface area expansion element 62 as shown in FIGS. 8, 9 and 10. Surface area expansion element 62 has a conduit 106 that defines a spiral shape. The conduit 106 has a proximal end 108 having a fluid inlet 110 and a fluid outlet 112 and a distal end 114. The surface area expansion element 62 is defined by the conduit 106. The coil can be provided by, a folded conduit 106 as shown in FIG. 16 or by a singular section of the conduit 106. In operation, a thermally transmissive fluid is supplied to the fluid inlet 110, circulated through the conduit 106 and passed out the fluid outlet 112. The circulation of the thermally transmissive fluid through the conduit 106 thereby affects the temperature of the conduit 106 which is configured to affect the temperature of a tissue. The thermally transmissive 3o fluid can be supplied to the surface area expansion element 62 via a circulation member as shown -and described herein.
In operation, the surface area expansion element 62 can be inserted into an opening in a body by placing the distal end 114 into the opening and "screwing" the rest of the conduit 106 into the opening. This arrangement allows the surface area expansion element 62 to have a greater diameter than the opening into which it is inserted. Fox example, the surface area expansion element 62 has a diameter ds measured from the widest points around a circumference which ranges from approximately l Omm to approximately 80mm. In one embodiment the d5 is approximately 60mm. Additionally, the surface area expansion element 62 has a height h5 measured from a top portion to a bottom portion which ranges from approximately 1 mm to approximatelyl0 mm. In one embodiment the hs is approximately 4mm to Smm.
to In an alternate operation, the expansion element 62 can be inserted into the skull in a contracted or deflated state and once placed into position, deployed or inflated with a thermally conductive fluid at a flow rate and fluid pressure FIG. 15 is a perspective view of another alternate surface area expansion element 62 as shown in FIGS. 8, 9 and 10. The surface axes expansion element 62 has at least one element arm 116 which has a distal end 118 and a proximal end 120 opposite the distal end 118, in which each element arm 116 is joined at the proximal end 120 to a port 122 to create a °'spider-like" surface area expansion element arrangement. Each element arm 116 has a height g measured from a top of the element arm 116 to a bottom of the element arm 116. Further, each element arm 116 has a width w measured from a first side of the element arm 116 to a second side of the element arm 116. Further, each element arm 116 preferable has approximately a 2 to 1 width w to height g ratio. Additionally, a supply of thermally transmissive fluid to the surface area expansion element 62 can be provided in accordance with the invention herein.
The materials used to construct the surface area expansion element 62 described herein include one or more of compliant, non-compliant, and partially compliant polymers.
It will be appreciated by persons skilled in the art that the present invention is not limited to what has been particularly shown and described herein above. In addition, unless mention was made above to the contrary, it should be noted that all of the accompanying drawings are not to scale. A variety of modifications and variations are possible in light of the above teachings without departing from the scope and spirit of the invention, which is limited only by the following claims.
FIG. 7 is a section view taken along section 7 - 7 of the devise shown in FIG.
8;
FIG. 8 is a sectional side view of an expansion element of the device of FIG.
9;
FIG. 9 is a sectional end view of an expansion element of the device shown in FIG. 7;
FIG. 10 is a sectional view of an alternative arrangement of a device constructed in accordance with the principles of the present invention;
FIG. 11 illustrates in cross-section yet another arrangement of a device constructed in accordance with the principles of the present invention;
to FIG. 12 depicts the exemplary device of FIG.1 inserted through a skull;
FIG. 13 depicts the exemplary device of FIG. 8 inserted through a skull;
FIG. 14 is a perspective view of an exemplary surface area expansion element;
and FIG. 15 is a perspective view of another exemplary surface area expansion element.
DETAILED DESCRIPTION OF THE INVENTION
The present invention provides a device for applying thermal energy to a localized region of a body tissue. Referring now to the drawing figures in which like reference designators refer to like elements, there is shown FIG. 1 a perspective view of an exemplary embodiment of a device constructed in accordance with the principles of the present invention and designated 2o generally as device 10. The device 10 includes a housing 12 with a first end 14, a second end 16 and an optional circulation vent 18 through which a thermally conductive fluid can pass. The housing 12 can be constructed of any suitable material, for example metals, plastics or a combination thereof. It is contemplated that the housing 12 has a diameter "D", measured at the widest portion of the device, from approximately one centimeter to approximately ten centimeters. In an exemplary embodiments the diameter ranges from approximately 1 centimeters to 1.5 centimeters. Optional radial threads 20 are provided on the exterior of the housing 12 to facilitate attachment to bone structure such as a skull.
However, it is contemplated that non-threaded arrangements can also be provided or coupled to or on the housing 12, for example, flutes, barbs, ridges or other anchoring elements. The term fluid as used herein refers to 3o a substance in a liquid state, a gaseous state, a transition state between liquid and gas, or a combination of any of the preceding.
FIG. 2 is a sectional view of the device of FIG. 1, taken along line 2 - 2.
The housing 12 is a generally cylindrical body having a wall that defines an interior space 24. Provided within the interior space 24, starting at the first end 14 and moving to the second end 16, is a contact member 26 which can be configured to directly contact a tissue or to contact an intermediate material. The contact member 26 can be constructed of any thermally conductive material, for example, stainless steel, aluminum, copper, titanium, various polymers or other such materials.
Additionally, adjacent the contact member 26 is a thermal member 28. The thermal member 28 has a thermal input side 32 in thermal communication with the contact member 26 and a thermal output side 34. The thermal member 28 can be a thermo-electric cooler as is known in the art, for 1o example, a pettier cooler. Optionally, a thermal dissipation member 33 is provided in thermal communication with the output side 32 of the thermal member 28. Such devices are known in the art, for example a common thermal dissipation member is a heat sink.
However, many alternate components for dissipating thermal energy can be provided. Further, it is contemplated that fewer elements can be provided, for example the thermal member 28 can be configured to act as a thermal contact member without the aid of a separate element.
Further provided within the housing 12 in the interior space 24 is a fluid circulation member 30. The term "fluid" as used herein generally refers to any flowable substance, including but not limited to gasses and liquids. An exemplary fluid circulation member 30 is a cooling fan. The fluid circulation member 30 is positioned such that it circulates a fluid, such as 2o air, across the thermal output side 32 of the thermal member 28 or the optional thermal dissipation member 33 if provided, thereby removing thermal energy dissipated by the thermal member 28. Alternatively, it is contemplated that a pump, used in association with a thermally conductive liquid, be provided to dissipate thermal energy generated by the output side 32 of the thermal member 28. In addition, an optional membrane 36 is provided in thermal communication with the contact member 26. Membrane 36 can be constructed of any bio-compatible material and can be constructed to directly contact a tissue.
Referring to FIG. 2, the operation of an exemplary device is now discussed in detail.
Power is supplied to the thermal member 28 through electrical wires (not shown) which in turn creates a thermal input side 32 and a thermal output side 34 to the thermal member 28 (the 3o thermal member discussed here is a pettier cooler and its function is well known in the art). fly operation of the thermal member 28, the thermal input side 32 has a reduced temperature relative to the thermal output side 34 which causes a cooling effect at the thermal input side 32. The thermal input side 32 being in thermally conductive contact with the contact member 26, thereby causes a reduction of the relative temperature of the contact member 26. The output side 34 being in thermally conductive contact with the optional thermal dissipation member 33 thereby raises the relative temperature of the thermal dissipation member 33 (creating heat).
Additionally, a current or activation energy is supplied to the fluid distribution member 30 to thereby circulate air through the thermal dissipation member 33 and out of housing 12 through the circulation vent 18. Heat dissipated by the thermal dissipation member 33 is removed and discharged from the housing 12 to maintain a reduced temperature at the contact member 26. As such, the concepts of the present invention provide a device 10 for localized cooling of a tissue in to a compact configuration.
FIG. 3 is a side view of the contact member 26 showing a contact side 27 having a concave surface as illustrated in phantom. The extent of curvature can modified to accommodate the requirements of the therapy and the tissue site to be treated. The depth of the cavity formed by the concave surface can be measured from the contact side 27 peapendicular to the center 29 of the concave region. In exemplary embodiments the concave distance ranges from approximately 0.001 inches to approximately 0.05 inches. In the embodiment shown in FIG. 3, which is used to treat dura matter, the concave distance is approximately 0.02 inches.
FIG. 4 illustrates the first end 14 of the device 10, wherein a square-shaped contact member 26 is disposed within the housing 12. Optionally, one or more access ports 38 are 2o provided through the housing 12 to allow passage or placement of devices such as specialty neuro-catheters, thermocouple probes, temperature sensors, and pressure sensors. Alternatively, an insert 40 can be provided to be completely or partially obstruct the access port 38. The insert 40 can be constructed from any suitable material, for example, rubber, silicone, aluminum or other such materials. While FIG. 4 shows a square-shaped contact member 26, it is contemplated that various other shapes can be provided. Additionally, an access port (not shown) can be provided through the contact member 26 itself to accommodate accessory devices as discussed above.
FIG. 5 is an exploded view of another configuration for the device, wherein a housing 48 has a wall 50 that defines an inner volume 52 to receive a thermal cartridge 58. The housing 3o includes longitudinal grooves 54 on the inner surface 53 of the wall 50.
Radial threads 56 can be provided for securing the housing 48 to the skull. The thermal cartridge 58 has axial slots 60 configured to be slidably engagable with axial grooves 54 of the housing 48.
The thermal cartridge 58 includes the exemplary elements as discussed above for applying thermal energy to a tissue site, for example, a contact member, a thermal member, and a cooling fan (not shown). In practice, the housing 48 is secured within a skull opening by screwing the radial threads into the bone. The thermal cartridge 58 is then inserted into the inner volume 50 of the housing 48 while aligning the axial slots 60 with the axial grooves 52. The thermal cartridge 58 can be slidably adjusted within the insert housing 48 in order to specifically locate the contact member against the dare matter.
Additionally, the thermal cartridge 58 can be moved in response to dare swelling or shrinkage that may occur during treatment. ~nce a desired distance of insertion is reached, the 1o thermal cartridge 58 is held in position by a set screw 63 through a screw opening 65 in the insert housing 48. While FIG. 7 illustrates an axial groove and slot arrangement, it is contemplated that alternate configurations can be provided. For example, a spiral groove and slot arrangement can be provided which would provide insertion depth adjustment via rotation of the thermal cartridge relative to the housing.
15 FIG. 6 is a perspective view of another feature of the invention, wherein a surface area expansion element 62 is disposed at the first end 14 of the housing 12. The surface area expansion element 62 provides a tissue contact area that is larger than the contact member 26 (not shown). The surface area expansion element 62 has a height "H" measured from a top 64 to a tissue contact area 66 of the surface area expansion element 62 and a deployed diameter "dd"
2o measured from the widest points at a periphery of the surface area expansion element 62. In an exemplary embodiment, the surface area expansion element 62 has a height to width ratio of approximately one to two. Further, a surface area expansion element 62 constructed in accordance the principles of the present invention can have a deployed diameter dd ranging in size from 5 to 200 mm. An exemplary embodiment has a deployed diameter 34 of 48 mm.
25 Another exemplary embodiment has a deployed diameter 34 of 64 mm. Further, an exemplary embodiment can have a height H ranging in size from 1 to 10 mm. In one exemplary embodiment the height H is approximately 4 mm.
The surface area expansion element 48 can be provided by several different structures, such as an inflatable plenum such as a bladder or balloon. Alternatively, the expansion element 30 48 can include foldable, rollable, or compressible, ribbons or resilient thermally-conductive structures. Exemplary resilient materials include rubber, silicon, flexible polymers and other materials known in the art. Thus, the surface area expansion element 62 is provided with. a structure that allows it to be inserted through a small opening in a body and then deployed to increase the tissue contact area 66. The tissue contact area 66 can have,a shape ranging from substantially flat to concave.
FIG. 7 is a view taken along section 7 - 7 of the device shown in FIG. 6 to show the s hollow interior of the surface area expansion element 62. As illustrated, the surface area expansion element 62 has a wall 68 which defines an interior volume 70 which is filled with a thermally transmissive fluid 72. The contact member 26 is in thermal contact with the interior volume 70 'via the thermally transmissive fluid 72 at an interface 74. The contact member 26 is in~turn in thermal contact with the thermal member 28. ~ptionally, a thermal dissipation member 33 can be provided in thermal communication with the output side 34 of the thermal member 28.
Further, the fluid circulation member 30 is provided in fluid communication with the thermal dissipation member 33. In practice, the cooling of the contact member 26 in turn cools the thermally transmissive fluid 72. The thermally transmissive fluid cools the tissue contact area 66 which in turn cools the contacted tissue. The surface area expansion element 62 can have other shapes, such as round, oval, oblong, spider-like, or amorphous.
FIG. 8 is a sectional view of the expansion element 62 shown in FIG. 9. The expansion element 62 is attached to the first end 14 of the housing 12 and includes a wall 68 that defines an interior volume 70. A hollow inj ection member 76 having a proximal end and a distal end is disposed within the interior volume 70. A circulation member 78 having an outlet 80 and an inlet 82 is in fluid communication with the proximal end of the injection member 76 via the outlet 80.
An example of a circulation member 78 is a fluid pump. An exemplary thermally transmissive fluid 72 is a saline solution. The arrangement of the circulation member 78, outlet 80, injection member 76, inlet 82, and interior volume 70 define a circulation circuit.
In operation, thermally transmissive fluid 72 is provided within the interior volume 70 and is drawn into the circulation member 78 via the inlet 82. The fluid 72 is then directed through the outlet 80, the proximal end of the injection member 76, and the distal end, where it is expelled into the interior volume 70. Alternately, the circulation member 78 can be in thermal contact with the thermal element 28, thereby affecting the temperature of the thermally transmissive fluid directly, or the thermally transmissive fluid can be in direct contact with the 3o contact member 26. It is contemplated that the circulation member 78 can be provided away from and separate from the device. It is further contemplated that such a separate circulation member 78 could reside external to the body to be treated and be in fluid communication with the device via various methods that are known in the art.
FIG. 9 is an end view of the device in which several injection members 76 are provided within the interior volume 70 to direct thermally transmissive fluid within the interior volume 70.
FIG. 10 is a sectional view of an alternate arrangement of the thermal cartridge 58 shown in FIG. 7. In this configuration, the cartridge 58 includes a wall 84, a proximal end 86, and a distal end 88; wherein the wall defines a space 90 to receive a thermal bridge 92, contact member 26, and thermal member 28. The contact member 26 is attached to the proximal end 86 of the cartridge 58. Near the distal end 88 of the cartridge 58, the thermal member 28 is provided 1 o within the space 90 adj acent and in thermal communication with the contact member 26. Still further toward the distal end 88, the thermal bridge 92 is in thermal communication with the thermal member 28. Attached to the distal end 88, and in thermal communication with the thermal bridge 92, is a thermal dissipation element 33 which is coupled to a fluid circulation member 30.
15 The thermal bridge 92 is provided to allow the thermal dissipation member 33 to be distanced from the thermal member 28. In some embodiments it is desirable to have thermal dissipation and fluid circulation members which are larger than the diameter of the housing of the device. By providing a thermal bridge 92, this is possible. While the thermal bridge 92 is described in association with the device shown in FIG. 7, it is contemplated that the thermal 2o bridge 92 and expanded thermal dissipation member 33 can be provided in all of the embodiments of the invention.
FIG. 11 illustrates another cartridge configuration for thermal transfer, wherein a fluid conduit 94 is provided in thermal communication with the thermal output side 34 of a thermal dissipation member 33. In practice, a thermally transmissive fluid is circulated through the fluid 25 conduit 94. When the fluid transits the portion of the fluid conduit that is in thermal communication with the thermal output side 34, thermal energy is dissipated to the fluid which is then circulated to a remote fluid chiller and then re-circulated through the fluid conduit 94.
FIG. 12 depicts a device 10, such as shown in FIG. 1, screwed into a burr hole 96 in a skull 98, wherein a contact element 26 is in thermally conductive contact with dare tissue 100 at 3o a location where treatment is desired.
FIG. 13 depicts a device 10, such as shown in FIG. 8, shown screwed into a burr hole in a skull 98. Attached to the first end 14 of the device 10 is a surface area expansion element 62.
The surface area expansion element 62 is configured to fit within a space 102 between the dare tissue 100 and the skull 96 without substantially damaging dare tissue 100.
For example, in order to fit within the space 102, the surface area expansion element 62 can have a flattened configuration as described in more detail herein. In an alternate embodiment, such a surface area expansion element 62 can be configured to be placed into subdural space within a body to be treated.
The present invention provides a thermocooler based device which is used to impart a thermal change to living tissue. The present invention advantageously provides a user an ability to control the temperature of a localized region of brain tissue. A procedure using the to thermocooling device is accomplished by inserting the device into a burr hole in the skull. An exemplary application is to directly contact the brain tissue with the thermocooling device cooling plate in order to lower the localized brain temperature as a neuroprotective measure in a post-stroke condition. Alternatively, the thermocooling device 10 is used to cool localized regions of the brain in a brain trauma patient as a way of lowering cerebral metabolic requirements and minimizing brain edema. Furthermore, the thermocooling device 10 can be used in any post-operative trauma situation when the possibility of cerebral edema exists such that the cerebral edema is desired to be abated or minimized. The above described device can be used in other parts of the body in instances where local tissue temperature needs to be controlled or modulated. In such instances, thermal therapy may involve using either chilled or heated 2o portions of the device to achieve the desired result.
FIG. 14 is a perspective view of an alternate surface area expansion element 62 as shown in FIGS. 8, 9 and 10. Surface area expansion element 62 has a conduit 106 that defines a spiral shape. The conduit 106 has a proximal end 108 having a fluid inlet 110 and a fluid outlet 112 and a distal end 114. The surface area expansion element 62 is defined by the conduit 106. The coil can be provided by, a folded conduit 106 as shown in FIG. 16 or by a singular section of the conduit 106. In operation, a thermally transmissive fluid is supplied to the fluid inlet 110, circulated through the conduit 106 and passed out the fluid outlet 112. The circulation of the thermally transmissive fluid through the conduit 106 thereby affects the temperature of the conduit 106 which is configured to affect the temperature of a tissue. The thermally transmissive 3o fluid can be supplied to the surface area expansion element 62 via a circulation member as shown -and described herein.
In operation, the surface area expansion element 62 can be inserted into an opening in a body by placing the distal end 114 into the opening and "screwing" the rest of the conduit 106 into the opening. This arrangement allows the surface area expansion element 62 to have a greater diameter than the opening into which it is inserted. Fox example, the surface area expansion element 62 has a diameter ds measured from the widest points around a circumference which ranges from approximately l Omm to approximately 80mm. In one embodiment the d5 is approximately 60mm. Additionally, the surface area expansion element 62 has a height h5 measured from a top portion to a bottom portion which ranges from approximately 1 mm to approximatelyl0 mm. In one embodiment the hs is approximately 4mm to Smm.
to In an alternate operation, the expansion element 62 can be inserted into the skull in a contracted or deflated state and once placed into position, deployed or inflated with a thermally conductive fluid at a flow rate and fluid pressure FIG. 15 is a perspective view of another alternate surface area expansion element 62 as shown in FIGS. 8, 9 and 10. The surface axes expansion element 62 has at least one element arm 116 which has a distal end 118 and a proximal end 120 opposite the distal end 118, in which each element arm 116 is joined at the proximal end 120 to a port 122 to create a °'spider-like" surface area expansion element arrangement. Each element arm 116 has a height g measured from a top of the element arm 116 to a bottom of the element arm 116. Further, each element arm 116 has a width w measured from a first side of the element arm 116 to a second side of the element arm 116. Further, each element arm 116 preferable has approximately a 2 to 1 width w to height g ratio. Additionally, a supply of thermally transmissive fluid to the surface area expansion element 62 can be provided in accordance with the invention herein.
The materials used to construct the surface area expansion element 62 described herein include one or more of compliant, non-compliant, and partially compliant polymers.
It will be appreciated by persons skilled in the art that the present invention is not limited to what has been particularly shown and described herein above. In addition, unless mention was made above to the contrary, it should be noted that all of the accompanying drawings are not to scale. A variety of modifications and variations are possible in light of the above teachings without departing from the scope and spirit of the invention, which is limited only by the following claims.
Claims (17)
1. A device for thermally affecting tissue, comprising:
a contact member, the contact member being thermally transmissive;
a thermal member having a thermal input side and a thermal output side, the thermal input side being in thermal communication with the contact member;
a thermal fluid circulation member, the thermal fluid circulation member provided to circulate thermal fluid across the thermal output side of the thermal member;
a housing, the housing having an interior surface for mounting the contact member, the thermal member and the thermal fluid circulation member and the housing being configured to fit within a burr hole in a skull; and a surface area expansion element, the surface area expansion element, having an interior volume filled with a thermally-transmissive fluid, the thermally-transmissive fluid being in thermal communication with the contact member.
a contact member, the contact member being thermally transmissive;
a thermal member having a thermal input side and a thermal output side, the thermal input side being in thermal communication with the contact member;
a thermal fluid circulation member, the thermal fluid circulation member provided to circulate thermal fluid across the thermal output side of the thermal member;
a housing, the housing having an interior surface for mounting the contact member, the thermal member and the thermal fluid circulation member and the housing being configured to fit within a burr hole in a skull; and a surface area expansion element, the surface area expansion element, having an interior volume filled with a thermally-transmissive fluid, the thermally-transmissive fluid being in thermal communication with the contact member.
2. The device according to claim 1, wherein the surface area expansion element has a spiral shape.
3. The device according to claim 1, wherein the surface area expansion element has a spider-like shape.
4. The device according to claim 2, wherein the surface area expansion element, has a width measured at a widest part of the outside periphery of the spiral and a height measured from a top to a tissue contact surface area, the width being at least twice the height.
5. The device according to claim 4, further comprising a fluid circulation element, the fluid circulation element comprising a circulation member and a distribution member.
6. The device according to claim 5, wherein the circulation member is a pump and the distribution member is at least one injection member.
7. The device according to claim 5, wherein the contact member defines an access port, the access port being in fluid communication with the thermally-transmissive fluid.
8. The device according to claim 1, further comprising a pressure sensor, the pressure sensor being configured to detect the pressure of a tissue to be treated.
9. The device according to claim 1, further comprising a temperature sensor, the temperature sensor being configured to detect the temperature of a tissue to be treated.
10. The device according to claim 1, wherein the thermal member removes heat energy from the contact member via the thermal input side and radiates heat energy via the thermal output side.
11. The device according to claim 1, wherein the thermal member is a thermocooler.
12. The device according to claim 1, further comprising a thermal sink, the thermal sink being in thermal communication with the thermal output side of the thermal member and being operable to radiate heat energy.
13. The device according to claim 1, wherein the thermal fluid circulation member is a fan and the thermal fluid is air, wherein the fan circulates air across the thermal sink to dissipate heat energy.
14. The device according to claim 1, wherein the thermal fluid circulation member is a pump and the thermal fluid is a liquid.
15. The device of claim 1, wherein the housing is substantially cylindrical in shape.
16. The device according to claim 15, wherein a portion of the cylindrical shape of the housing is threaded.
17. A device for thermally affecting tissue, comprising:
a thermal cartridge having:
a contact member, the contact member being thermally transmissive;
a thermal member having a thermal input side and a thermal output side, the thermal input side being in thermal communication with the contact member;
a thermal fluid circulation member, the thermal fluid circulation member provided to circulate thermal fluid across the thermal output side of the thermal member;
a housing, the housing having an interior surface for mounting the contact member, the thermal member and the thermal fluid circulation member and the housing being configured to fit within a burr hole in a skull; and a surface area expansion element, the surface area expansion element, having an interior volume filled with a thermally-transmissive fluid, the thermally-transmissive fluid being in thermal communication with the contact member.
a thermal cartridge having:
a contact member, the contact member being thermally transmissive;
a thermal member having a thermal input side and a thermal output side, the thermal input side being in thermal communication with the contact member;
a thermal fluid circulation member, the thermal fluid circulation member provided to circulate thermal fluid across the thermal output side of the thermal member;
a housing, the housing having an interior surface for mounting the contact member, the thermal member and the thermal fluid circulation member and the housing being configured to fit within a burr hole in a skull; and a surface area expansion element, the surface area expansion element, having an interior volume filled with a thermally-transmissive fluid, the thermally-transmissive fluid being in thermal communication with the contact member.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23831400P | 2000-10-05 | 2000-10-05 | |
US60/238,314 | 2000-10-05 | ||
PCT/US2001/031109 WO2002028329A1 (en) | 2000-10-05 | 2001-10-04 | Neurosurgical device for thermal therapy including spiral element |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2425059A1 true CA2425059A1 (en) | 2002-04-11 |
Family
ID=22897360
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002425106A Abandoned CA2425106A1 (en) | 2000-10-05 | 2001-10-04 | Expandable device for thermal therapy including spiral element |
CA002425015A Abandoned CA2425015A1 (en) | 2000-10-05 | 2001-10-04 | Expandable device for thermal therapy |
CA002425061A Abandoned CA2425061A1 (en) | 2000-10-05 | 2001-10-04 | Neurosurgical device for thermal therapy |
CA002425059A Abandoned CA2425059A1 (en) | 2000-10-05 | 2001-10-04 | Neurosurgical device for thermal therapy including spiral element |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002425106A Abandoned CA2425106A1 (en) | 2000-10-05 | 2001-10-04 | Expandable device for thermal therapy including spiral element |
CA002425015A Abandoned CA2425015A1 (en) | 2000-10-05 | 2001-10-04 | Expandable device for thermal therapy |
CA002425061A Abandoned CA2425061A1 (en) | 2000-10-05 | 2001-10-04 | Neurosurgical device for thermal therapy |
Country Status (4)
Country | Link |
---|---|
US (7) | US6899726B2 (en) |
EP (4) | EP1326564A1 (en) |
CA (4) | CA2425106A1 (en) |
WO (4) | WO2002028331A1 (en) |
Families Citing this family (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7044134B2 (en) | 1999-11-08 | 2006-05-16 | Ev3 Sunnyvale, Inc | Method of implanting a device in the left atrial appendage |
WO2002028331A1 (en) * | 2000-10-05 | 2002-04-11 | Seacoast Technologies, Inc. | Expandable device for thermal therapy including spiral element |
US8123789B2 (en) | 2002-04-29 | 2012-02-28 | Rohit Khanna | Central nervous system cooling catheter |
US6929656B1 (en) * | 2001-09-14 | 2005-08-16 | Medcool, Inc. | Method and device for reducing secondary brain injury |
US7144418B1 (en) | 2001-11-02 | 2006-12-05 | Medcool, Inc. | Method, and system for selective cerebral hypothermia |
US7156867B2 (en) * | 2001-12-31 | 2007-01-02 | Medcool, Inc. | Uniform selective cerebral hypothermia |
US6789545B2 (en) * | 2002-10-04 | 2004-09-14 | Sanarus Medical, Inc. | Method and system for cryoablating fibroadenomas |
EP1558123B1 (en) * | 2002-10-11 | 2010-11-24 | Flint Hills Scientific, L.L.C. | Multi-modal system for detection and control of changes in brain state |
DE60335134D1 (en) * | 2002-10-11 | 2011-01-05 | Flint Hills Scient Llc | MULTIMODAL SYSTEM FOR DETECTING AND CONTROLLING CHANGES IN THE STATE OF THE BRAIN |
US7004961B2 (en) * | 2003-01-09 | 2006-02-28 | Edward Wong | Medical device and method for temperature control and treatment of the brain and spinal cord |
WO2004064622A2 (en) * | 2003-01-15 | 2004-08-05 | Medcool Inc. | Method and apparatus for managing temperature in a patient |
US7101387B2 (en) | 2003-04-30 | 2006-09-05 | Scimed Life Systems, Inc. | Radio frequency ablation cooling shield |
WO2004103230A1 (en) * | 2003-05-22 | 2004-12-02 | Medoc Ltd. | Thermal stimulation probe and method |
US20050043673A1 (en) * | 2003-08-22 | 2005-02-24 | Lieberman Daniel M. | Method and apparatus for irrigation and drainage of the brain's subdural space using a percutaneous approach |
US20050065584A1 (en) * | 2003-09-09 | 2005-03-24 | Schiff Jonathan D. | System and method for cooling internal tissue |
US7318834B2 (en) * | 2004-02-09 | 2008-01-15 | Philip Chidi Njemanze | Apparatus and method for hypothermia and rewarming by altering the temperature of the cerebrospinal fluid in the brain |
US20050246000A1 (en) * | 2004-05-03 | 2005-11-03 | Seacoast Technologies, Inc. | Cooled craniectomy |
US9028852B2 (en) * | 2004-09-07 | 2015-05-12 | 3M Innovative Properties Company | Cationic antiseptic compositions and methods of use |
US20060224219A1 (en) * | 2005-03-31 | 2006-10-05 | Sherwood Services Ag | Method of using neural stimulation during nucleoplasty procedures |
US20100145424A1 (en) * | 2004-09-21 | 2010-06-10 | Covidien Ag | Method for Treatment of an Intervertebral Disc |
US20060064145A1 (en) | 2004-09-21 | 2006-03-23 | Podhajsky Ronald J | Method for treatment of an intervertebral disc |
US8672988B2 (en) | 2004-10-22 | 2014-03-18 | Medtronic Cryocath Lp | Method and device for local cooling within an organ using an intravascular device |
US20060111765A1 (en) * | 2004-11-19 | 2006-05-25 | Seacoast Technologies, Inc. | Medical device for thermally affecting tissue having an inflatable circumferential stiffening member |
US20090326621A1 (en) * | 2005-05-24 | 2009-12-31 | Rizk El-Galley | Surgical delivery devices and methods |
US20080214216A1 (en) * | 2007-03-02 | 2008-09-04 | Bragg Michael J | Mobile notification system |
US8202308B2 (en) * | 2007-06-29 | 2012-06-19 | Matthew D. Smyth | Depth cooling implant system |
US20090112278A1 (en) * | 2007-10-30 | 2009-04-30 | Neuropace, Inc. | Systems, Methods and Devices for a Skull/Brain Interface |
US9179850B2 (en) | 2007-10-30 | 2015-11-10 | Neuropace, Inc. | Systems, methods and devices for a skull/brain interface |
US20090227923A1 (en) * | 2008-03-07 | 2009-09-10 | Markus Christopher A | Cooling system for orthopedic cast |
US20090312824A1 (en) * | 2008-06-11 | 2009-12-17 | Layne Matthew Dean | Method and Apparatus for Influencing the Temperature of an Area of the Body |
US8992568B2 (en) | 2008-10-20 | 2015-03-31 | Neil Duggal | Systems and methods for cerebrospinal fluid repair |
US9522081B2 (en) * | 2008-12-02 | 2016-12-20 | University Of Washington | Methods and devices for brain cooling for treatment and/or prevention of epileptic seizures |
US8591562B2 (en) * | 2008-12-02 | 2013-11-26 | University Of Washington | Methods and devices for brain cooling for treatment and prevention of acquired epilepsy |
CA2799473C (en) * | 2010-05-14 | 2020-03-10 | Todd Sheppard Saunders | Methods and devices for cooling spinal tissue |
WO2012012807A2 (en) * | 2010-07-23 | 2012-01-26 | Board Of Regents Of The University Of Texas Systems | Surgical cooling device |
JP5989003B2 (en) | 2011-01-04 | 2016-09-07 | ザ・ジョンズ・ホプキンス・ユニバーシティ | Minimally invasive laparoscopic retractor |
KR101361344B1 (en) * | 2012-02-15 | 2014-02-12 | 경북대학교 산학협력단 | Brain cooling device for craniotomy patient |
CN104334015B (en) * | 2012-03-29 | 2018-06-05 | 莱普诗贝斯医疗有限公司 | Tissue retractor |
US10085879B2 (en) | 2012-04-17 | 2018-10-02 | Empire Technology Development, Llc | Heat treatment device |
JP5992260B2 (en) * | 2012-07-31 | 2016-09-14 | ヤーマン株式会社 | Hot and cold beauty treatment equipment |
DE102013104951B4 (en) * | 2013-05-14 | 2015-11-19 | Acandis Gmbh & Co. Kg | Ventricular catheter as well as arrangement and system with a ventricular catheter |
CN103860316B (en) * | 2014-03-18 | 2016-04-20 | 杭州电子科技大学 | A kind of Medical head body temperature self-checking device |
CN104042391A (en) * | 2014-06-05 | 2014-09-17 | 联合互利国际医疗器械(北京)有限公司 | Cold compress device used for eye |
FR3022761B1 (en) * | 2014-06-27 | 2021-04-02 | Univ Strasbourg | THERMAL STIMULATION DEVICE AND ITS CONTROL AND REGULATION PROCESS |
EP3397149A4 (en) | 2015-12-30 | 2019-08-14 | Schuler Scientific Solutions, LLC | Tissue mapping and treatment |
EP3263076A1 (en) * | 2016-06-07 | 2018-01-03 | Universidade do Minho | Implantable thermal neuromodulator with wireless powering and wireless communications and fabrication method thereof |
US20220378608A1 (en) * | 2019-10-18 | 2022-12-01 | Duke University | Devices, systems, and methods for modulating tissue temperature |
FR3117334B1 (en) * | 2020-12-10 | 2022-10-28 | Commissariat Energie Atomique | Spot cooling device |
Family Cites Families (122)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2190384A (en) * | 1937-07-06 | 1940-02-13 | Louis B Newman | Therapeutic bag |
NL127326C (en) | 1960-09-12 | 1969-10-15 | Ver Glasfabrieken Nv | Method and device for pressing glass objects |
NL291694A (en) | 1962-04-30 | 1900-01-01 | ||
US3170465A (en) | 1962-06-26 | 1965-02-23 | James E Henney | Internal body heating devices |
US3174481A (en) * | 1963-10-14 | 1965-03-23 | Seaman Louis | Stomach freezing system with inflatable distributor means |
US3504674A (en) | 1966-12-22 | 1970-04-07 | Emil S Swenson | Method and apparatus for performing hypothermia |
US3897790A (en) | 1971-08-13 | 1975-08-05 | Univ Iowa State Res Found Inc | Method for controlling vascular responses |
US3776241A (en) | 1971-08-13 | 1973-12-04 | Univ Iowa State Res Found Inc | System and method for controlling vascular responses |
US3848607A (en) * | 1971-10-29 | 1974-11-19 | M Clair | Therapeutic apparatus |
US3736936A (en) | 1971-12-13 | 1973-06-05 | Hughes Aircraft Co | Cryogenic heat transfer device |
SU432907A1 (en) | 1972-07-18 | 1974-06-25 | Научно исследовательский институт экспериментальной | |
US4010795A (en) | 1973-08-02 | 1977-03-08 | Gambro Ag | Cooling unit |
SU639557A1 (en) | 1975-05-15 | 1978-12-30 | Moskalev Lev G | Method of hypothermia treatment of hollow organs |
GB1534162A (en) | 1976-07-21 | 1978-11-29 | Lloyd J | Cyosurgical probe |
JPS55858A (en) | 1978-06-20 | 1980-01-07 | Tokyo Shibaura Electric Co | Refrigerator |
DE2851602A1 (en) * | 1978-11-29 | 1980-06-12 | Messerschmitt Boelkow Blohm | Medical cooling device for localised inflammation - with Peltier element between heat conductive block and cooling pad applied to patient's skin |
CA1129015A (en) * | 1980-06-11 | 1982-08-03 | Timofei S. Gudkin | Thermoelectric cryoprobe |
US4781193A (en) | 1982-03-07 | 1988-11-01 | Pagden Kenneth L | Headache treatment apparatus |
US4961422A (en) | 1983-01-21 | 1990-10-09 | Marchosky J Alexander | Method and apparatus for volumetric interstitial conductive hyperthermia |
GB2142831B (en) | 1983-01-21 | 1987-02-11 | Jose Alexander Marchosky | Implantable hyperthermia device and system |
US4566455A (en) * | 1984-03-27 | 1986-01-28 | H. Mervin Hughes, II | Skin temperature control |
US4739771A (en) * | 1986-02-20 | 1988-04-26 | Kim Manwaring | Thermal method and apparatus for measuring organ blood perfusion |
US4860744A (en) | 1987-11-02 | 1989-08-29 | Raj K. Anand | Thermoelectrically controlled heat medical catheter |
JPH01151900A (en) | 1987-12-09 | 1989-06-14 | Nippon Dempa Kogyo Co Ltd | Ultrasonic wave probe |
US4989601A (en) | 1988-05-02 | 1991-02-05 | Medical Engineering & Development Institute, Inc. | Method, apparatus, and substance for treating tissue having neoplastic cells |
SU1544422A1 (en) | 1988-05-24 | 1990-02-23 | Институт проблем криобиологии и криомедицины АН УССР | Device for hyperthermia |
US4946460A (en) | 1989-04-26 | 1990-08-07 | Cryo Instruments, Inc. | Apparatus for cryosurgery |
US4971056A (en) * | 1989-08-07 | 1990-11-20 | Daily Medical Products Incorporated | Arcuate shaped cooling jacket |
FR2651581B1 (en) | 1989-09-06 | 1994-05-13 | Centre Nal Recherc Scientifique | MEANS FOR THE DIAGNOSIS OF DEMYELINIZING NEUROPATHIES, IN PARTICULAR MULTIPLE SCLEROSIS. |
DK0518989T3 (en) | 1990-03-05 | 1998-02-02 | Mallinckrodt Veterinary Inc | Parasitic preparations and methods for their preparation and use |
US5549559A (en) | 1990-03-22 | 1996-08-27 | Argomed Ltd. | Thermal treatment apparatus |
US5624392A (en) | 1990-05-11 | 1997-04-29 | Saab; Mark A. | Heat transfer catheters and methods of making and using same |
US5108407A (en) | 1990-06-08 | 1992-04-28 | Rush-Presbyterian St. Luke's Medical Center | Method and apparatus for placement of an embolic coil |
US5417686A (en) | 1990-07-10 | 1995-05-23 | The Texas A&M University System | Temperature control mechanisms for a micro heat pipe catheter |
SU1745238A1 (en) | 1990-07-13 | 1992-07-07 | В.П.Ганин | Hypothermia-inducing helmet |
RU1787026C (en) | 1990-08-09 | 1993-01-07 | Олег Григорьевич Царицын | Device for application of thermal effect |
US5209227A (en) | 1990-09-25 | 1993-05-11 | Richard Deutsch | Thermoelectric therapy device and moisturizing device therefor |
ZA917281B (en) | 1990-09-26 | 1992-08-26 | Cryomedical Sciences Inc | Cryosurgical instrument and system and method of cryosurgery |
US5207674A (en) | 1991-05-13 | 1993-05-04 | Hamilton Archie C | Electronic cryogenic surgical probe apparatus and method |
US5261399A (en) | 1991-05-22 | 1993-11-16 | Klatz Ronald M | Brain cooling device and method for performing the same |
US6030412A (en) | 1991-05-22 | 2000-02-29 | Life Science Holdings, Inc. | Apparatus and method for cooling the brain, brain stem and associated neurologic tissues |
US6277143B1 (en) * | 1991-05-22 | 2001-08-21 | Life Science Holdings, Inc. | Brain cooling apparatus and method for cooling the brain |
US5429582A (en) | 1991-06-14 | 1995-07-04 | Williams; Jeffery A. | Tumor treatment |
EP0597987B1 (en) | 1991-08-02 | 1997-10-29 | HANSEN, Ronald Peter | Solution for watering plant roots |
US5520682A (en) | 1991-09-06 | 1996-05-28 | Cryomedical Sciences, Inc. | Cryosurgical instrument with vent means and method using same |
JPH0596012A (en) | 1991-10-07 | 1993-04-20 | Olympus Optical Co Ltd | Thermotherapic device |
US5304214A (en) | 1992-01-21 | 1994-04-19 | Med Institute, Inc. | Transurethral ablation catheter |
US5730756A (en) | 1992-06-02 | 1998-03-24 | General Surgical Innovations, Inc. | Method for developing an anatomic space for laparoscopic procedures with laparoscopic visualization |
US5772680A (en) | 1992-06-02 | 1998-06-30 | General Surgical Innovations, Inc. | Apparatus and method for developing an anatomic space for laparoscopic procedures with laparoscopic visualization |
US5607443A (en) | 1992-06-02 | 1997-03-04 | General Surgical Innovations, Inc. | Expansible tunneling apparatus for creating an anatomic working space with laparoscopic observation |
US5540711A (en) | 1992-06-02 | 1996-07-30 | General Surgical Innovations, Inc. | Apparatus and method for developing an anatomic space for laparoscopic procedures with laparoscopic visualization |
US5626618A (en) | 1993-09-24 | 1997-05-06 | The Ohio State University | Mechanical adjunct to cardiopulmonary resuscitation (CPR), and an electrical adjunct to defibrillation countershock, cardiac pacing, and cardiac monitoring |
US5468820A (en) | 1994-01-14 | 1995-11-21 | Isp Investments Inc. | Reactive diluent for radiation curing of film-forming polymers |
US5474533A (en) | 1994-04-11 | 1995-12-12 | The Ohio State University | Intrathoracic mechanical, electrical and temperature adjunct to cardiopulmonary cerebral resuscitation, shock, head injury, hypothermia and hyperthermia |
US5716386A (en) | 1994-06-27 | 1998-02-10 | The Ohio State University | Non-invasive aortic impingement and core and cerebral temperature manipulation |
US5608263A (en) * | 1994-09-06 | 1997-03-04 | The Regents Of The University Of Michigan | Micromachined self packaged circuits for high-frequency applications |
RU2100989C1 (en) | 1994-09-27 | 1998-01-10 | Машков Сергей Илларионович | Replaceable power supply source holder usable in physiotherapy |
US6152920A (en) | 1997-10-10 | 2000-11-28 | Ep Technologies, Inc. | Surgical method and apparatus for positioning a diagnostic or therapeutic element within the body |
SE520730C2 (en) | 1995-01-20 | 2003-08-19 | Eskil Elmer | Treatment of brain ischemia and brain damage with a neuroprotective drug |
US5643207A (en) | 1995-04-28 | 1997-07-01 | Medtronic, Inc. | Implantable techniques for infusing a therapeutic agent with endogenous bodily fluid |
US5735817A (en) * | 1995-05-19 | 1998-04-07 | Shantha; T. R. | Apparatus for transsphenoidal stimulation of the pituitary gland and adjoining brain structures |
US5645528A (en) | 1995-06-06 | 1997-07-08 | Urologix, Inc. | Unitary tip and balloon for transurethral catheter |
US5609620A (en) * | 1995-06-06 | 1997-03-11 | Pat O. Daily | Cardiac cooling jacket |
US5697925A (en) | 1995-06-09 | 1997-12-16 | Engineering & Research Associates, Inc. | Apparatus and method for thermal ablation |
DE19521166C2 (en) | 1995-06-10 | 1999-03-25 | Horst Dipl Ing Peschel | Device for measuring the intracranial temperature |
US6156057A (en) | 1995-08-12 | 2000-12-05 | Fox; James Allan | Method for inducing hypothermia |
US5980504A (en) | 1996-08-13 | 1999-11-09 | Oratec Interventions, Inc. | Method for manipulating tissue of an intervertebral disc |
US6053900A (en) * | 1996-02-16 | 2000-04-25 | Brown; Joe E. | Apparatus and method for delivering diagnostic and therapeutic agents intravascularly |
US5972714A (en) * | 1996-03-29 | 1999-10-26 | The United States Of America As Represented By The Secretary Of The Navy | Atmospheric ozone concentration detector |
US5976109A (en) | 1996-04-30 | 1999-11-02 | Medtronic, Inc. | Apparatus for drug infusion implanted within a living body |
US5735814A (en) | 1996-04-30 | 1998-04-07 | Medtronic, Inc. | Techniques of treating neurodegenerative disorders by brain infusion |
US5716353A (en) | 1996-05-03 | 1998-02-10 | Urds, Corp. | Cryosurgical instrument |
US5713923A (en) | 1996-05-13 | 1998-02-03 | Medtronic, Inc. | Techniques for treating epilepsy by brain stimulation and drug infusion |
US5718684A (en) | 1996-05-24 | 1998-02-17 | Gupta; Mukesh | Multi-lobed balloon catheter |
US5951512A (en) | 1996-05-28 | 1999-09-14 | Horizon Medical Products, Inc. | Infusion port with modified drug reservoir |
US5800488A (en) | 1996-07-23 | 1998-09-01 | Endocare, Inc. | Cryoprobe with warming feature |
US6090132A (en) | 1996-08-15 | 2000-07-18 | Fox; James Allan | Method and apparatus for inducing hypothermia |
US5871498A (en) | 1996-09-23 | 1999-02-16 | General Surgical Innovations, Inc. | Expansible apparatus with back-loaded cannula |
US5891134A (en) | 1996-09-24 | 1999-04-06 | Goble; Colin | System and method for applying thermal energy to tissue |
US5916242A (en) | 1996-11-04 | 1999-06-29 | Schwartz; George R. | Apparatus for rapid cooling of the brain and method of performing same |
US5954714A (en) * | 1996-11-20 | 1999-09-21 | Gynecare, Inc. | Heated balloon having rotary fluid impeller |
US5972963A (en) * | 1996-12-23 | 1999-10-26 | Hoechst Marion Roussel, Inc. | 3-aryl-2-(1-substituted 4-piperidinyl)-1,1-dioxo-3H-benzo[D]isothiazoles and related compounds |
US5899898A (en) | 1997-02-27 | 1999-05-04 | Cryocath Technologies Inc. | Cryosurgical linear ablation |
US6126680A (en) | 1997-04-03 | 2000-10-03 | Mayo Foundation For Medical Education And Research | Selective convective brain cooling apparatus and method |
US6042579A (en) | 1997-04-30 | 2000-03-28 | Medtronic, Inc. | Techniques for treating neurodegenerative disorders by infusion of nerve growth factors into the brain |
US6117128A (en) | 1997-04-30 | 2000-09-12 | Kenton W. Gregory | Energy delivery catheter and method for the use thereof |
US6045579A (en) * | 1997-05-01 | 2000-04-04 | Spinal Concepts, Inc. | Adjustable height fusion device |
US6015421A (en) | 1997-05-15 | 2000-01-18 | General Surgical Innovations, Inc. | Apparatus and method for developing an anatomic space for laparoscopic procedures |
US5928203A (en) | 1997-10-01 | 1999-07-27 | Boston Scientific Corporation | Medical fluid infusion and aspiration |
US6015382A (en) | 1997-10-16 | 2000-01-18 | General Surgical Innovations, Inc. | Inflatable manipulator for organ positioning during surgery and method of use |
JPH11170076A (en) | 1997-12-09 | 1999-06-29 | Sumitomo Metal Ind Ltd | Manufacture of titanium covered steel |
EP1047362B1 (en) | 1998-01-12 | 2004-10-27 | Ronald P. Lesser | Technique for using brain heat flow management to treat brain disorders |
US6051019A (en) | 1998-01-23 | 2000-04-18 | Del Mar Medical Technologies, Inc. | Selective organ hypothermia method and apparatus |
US6383210B1 (en) | 2000-06-02 | 2002-05-07 | Innercool Therapies, Inc. | Method for determining the effective thermal mass of a body or organ using cooling catheter |
US6231595B1 (en) | 1998-03-31 | 2001-05-15 | Innercool Therapies, Inc. | Circulating fluid hypothermia method and apparatus |
US6251130B1 (en) | 1998-03-24 | 2001-06-26 | Innercool Therapies, Inc. | Device for applications of selective organ cooling |
US6261312B1 (en) * | 1998-06-23 | 2001-07-17 | Innercool Therapies, Inc. | Inflatable catheter for selective organ heating and cooling and method of using the same |
US5916212A (en) | 1998-01-23 | 1999-06-29 | Cryomedical Sciences, Inc. | Hand held cyrosurgical probe system |
US6096068A (en) | 1998-01-23 | 2000-08-01 | Innercool Therapies, Inc. | Selective organ cooling catheter and method of using the same |
US6238428B1 (en) | 1998-01-23 | 2001-05-29 | Innercool Therapies, Inc. | Selective organ cooling apparatus and method employing turbulence-inducing element with curved terminations |
US6251129B1 (en) | 1998-03-24 | 2001-06-26 | Innercool Therapies, Inc. | Method for low temperature thrombolysis and low temperature thrombolytic agent with selective organ temperature control |
US6045532A (en) | 1998-02-20 | 2000-04-04 | Arthrocare Corporation | Systems and methods for electrosurgical treatment of tissue in the brain and spinal cord |
US6224624B1 (en) | 1998-03-24 | 2001-05-01 | Innercool Therapies, Inc. | Selective organ cooling apparatus and method |
US6106518A (en) | 1998-04-09 | 2000-08-22 | Cryocath Technologies, Inc. | Variable geometry tip for a cryosurgical ablation device |
JPH11290530A (en) | 1998-04-10 | 1999-10-26 | Fuji Shoji Kk | Card type game machine |
US6126684A (en) | 1998-04-21 | 2000-10-03 | The Regents Of The University Of California | Indwelling heat exchange catheter and method of using same |
US6322559B1 (en) | 1998-07-06 | 2001-11-27 | Vnus Medical Technologies, Inc. | Electrode catheter having coil structure |
FR2781378B1 (en) * | 1998-07-23 | 2001-02-16 | Stephane Chanut | PROTECTED AND EASILY EXTRACTED NEEDLE DEVICE |
US6053913A (en) | 1998-09-10 | 2000-04-25 | Tu; Lily Chen | Rapid exchange stented balloon catheter having ablation capabilities |
US6017324A (en) | 1998-10-20 | 2000-01-25 | Tu; Lily Chen | Dilatation catheter having a bifurcated balloon |
JP2000126973A (en) | 1998-10-26 | 2000-05-09 | Fuji Mach Mfg Co Ltd | Machining center with work robot |
US6123718A (en) | 1998-11-02 | 2000-09-26 | Polymerex Medical Corp. | Balloon catheter |
US6183501B1 (en) | 1998-12-18 | 2001-02-06 | Jeffrey W. Latham | Head and spine cooling device |
US6146411A (en) | 1998-12-24 | 2000-11-14 | Alsius Corporation | Cooling system for indwelling heat exchange catheter |
US6113593A (en) | 1999-02-01 | 2000-09-05 | Tu; Lily Chen | Ablation apparatus having temperature and force sensing capabilities |
US6132415A (en) | 1999-02-09 | 2000-10-17 | Vasca, Inc. | Systems and methods for removing retained fluids and infusing therapeutic fluids |
US6427089B1 (en) * | 1999-02-19 | 2002-07-30 | Edward W. Knowlton | Stomach treatment apparatus and method |
US6178608B1 (en) | 1999-03-26 | 2001-01-30 | Bourn & Koch Machine Tool Co. | Rotary transfer machine |
US6179831B1 (en) | 1999-04-29 | 2001-01-30 | Galil Medical Ltd. | Method of cryoablating benign prostate hyperplasia |
US6304214B1 (en) | 1999-05-07 | 2001-10-16 | Lucent Technologies Inc. | Antenna array system having coherent and noncoherent reception characteristics |
WO2001076517A2 (en) * | 2000-04-07 | 2001-10-18 | The General Hospital Corporation D/B/A Massachusetts General Hospital | Methods and apparatus for thermally affecting tissue |
WO2002028331A1 (en) * | 2000-10-05 | 2002-04-11 | Seacoast Technologies, Inc. | Expandable device for thermal therapy including spiral element |
-
2001
- 2001-10-04 WO PCT/US2001/031221 patent/WO2002028331A1/en not_active Application Discontinuation
- 2001-10-04 EP EP01979508A patent/EP1326564A1/en not_active Withdrawn
- 2001-10-04 EP EP01977396A patent/EP1326562A1/en not_active Withdrawn
- 2001-10-04 WO PCT/US2001/030898 patent/WO2002028328A1/en not_active Application Discontinuation
- 2001-10-04 US US09/971,016 patent/US6899726B2/en not_active Expired - Fee Related
- 2001-10-04 WO PCT/US2001/031110 patent/WO2002028330A1/en not_active Application Discontinuation
- 2001-10-04 CA CA002425106A patent/CA2425106A1/en not_active Abandoned
- 2001-10-04 US US09/971,073 patent/US6652566B2/en not_active Expired - Fee Related
- 2001-10-04 US US09/971,014 patent/US6660026B2/en not_active Expired - Fee Related
- 2001-10-04 EP EP01975694A patent/EP1326561A1/en not_active Withdrawn
- 2001-10-04 US US09/971,015 patent/US6743200B2/en not_active Expired - Fee Related
- 2001-10-04 EP EP01979464A patent/EP1326563A1/en not_active Withdrawn
- 2001-10-04 CA CA002425015A patent/CA2425015A1/en not_active Abandoned
- 2001-10-04 US US09/971,072 patent/US6648907B2/en not_active Expired - Fee Related
- 2001-10-04 WO PCT/US2001/031109 patent/WO2002028329A1/en not_active Application Discontinuation
- 2001-10-04 CA CA002425061A patent/CA2425061A1/en not_active Abandoned
- 2001-10-04 CA CA002425059A patent/CA2425059A1/en not_active Abandoned
-
2003
- 2003-09-11 US US10/660,157 patent/US6923826B2/en not_active Expired - Fee Related
-
2004
- 2004-02-20 US US10/784,085 patent/US20040167468A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1326563A1 (en) | 2003-07-16 |
EP1326562A1 (en) | 2003-07-16 |
US6899726B2 (en) | 2005-05-31 |
US20040167468A1 (en) | 2004-08-26 |
US6648907B2 (en) | 2003-11-18 |
US20040049250A1 (en) | 2004-03-11 |
WO2002028328A1 (en) | 2002-04-11 |
EP1326564A1 (en) | 2003-07-16 |
US20020091425A1 (en) | 2002-07-11 |
EP1326561A1 (en) | 2003-07-16 |
WO2002028329A1 (en) | 2002-04-11 |
US6652566B2 (en) | 2003-11-25 |
US6743200B2 (en) | 2004-06-01 |
US20020116040A1 (en) | 2002-08-22 |
US20020123783A1 (en) | 2002-09-05 |
WO2002028330A1 (en) | 2002-04-11 |
CA2425061A1 (en) | 2002-04-11 |
US6923826B2 (en) | 2005-08-02 |
US20020068902A1 (en) | 2002-06-06 |
CA2425015A1 (en) | 2002-04-11 |
US20020091428A1 (en) | 2002-07-11 |
CA2425106A1 (en) | 2002-04-11 |
WO2002028331A1 (en) | 2002-04-11 |
US6660026B2 (en) | 2003-12-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6652566B2 (en) | Neurosurgical device for thermal therapy including spiral element | |
US20060173396A1 (en) | Systems and methods for temperature adjustment using bodily fluids as a thermic medium | |
US4338944A (en) | Therapeutic device | |
US7156867B2 (en) | Uniform selective cerebral hypothermia | |
WO2005023200A2 (en) | System and method for cooling internal tissue | |
US20040077931A1 (en) | Accessory for surgical instrument | |
US20040049154A1 (en) | Inflatable device for treating tissue | |
US20040034321A1 (en) | Conformal pad for neurosurgery and method thereof | |
US6733518B2 (en) | Method and apparatus for thermal therapy | |
KR101477612B1 (en) | Portable device for therapeutic hypothermia | |
EP2514394A1 (en) | Temperature regulation system | |
IES85969Y1 (en) | Temperature regulation system | |
IE20110192U1 (en) | Temperature regulation system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDE | Discontinued |