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Publication numberUS3782370 A
Publication typeGrant
Publication dateJan 1, 1974
Filing dateJul 12, 1972
Priority dateJul 12, 1972
Publication numberUS 3782370 A, US 3782370A, US-A-3782370, US3782370 A, US3782370A
InventorsMcdonald B
Original AssigneeMcdonald B
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Surgical retractor
US 3782370 A
Abstract
This surgical retractor has a pair of opposed slat-like sides interconnected by an elastic V-shaped end piece so that the side slats are elastically bowed in arcuate paths with the concave sides of the slats facing each other. Each of the slats has cooperating ratchet and pawl arrangements to permit substantially free lengthwise extension and restricted lengthwise retraction for enlarging the size of the retractor. An extensible inflatable tube extends around the retractor and is intermittently connected thereto for extending the retractor in response to increasing fluid pressure in the tube.
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Description  (OCR text may contain errors)

llmted States Patent 1191 1111 3,782,370

McDonald Jan. 1, 1974 1 SURGICAL RETRACTOR 3,570,475 3/1971 Weinstein 128/20 [76] Inventor: Bernard McDonald, 18212 Pacific REI N PATENTS OR APPLICATI Coast H y, M lif 90265 1,151,993 5/1969 Great Britain 1211 20 [22] Filed: July 12, 1972 Primary ExammerLuc1e H. Laudenslager [21] Appl No.2 271,037 Attorney-Robert L. Parker et a1.

Related US. Application Data [63] Continuation-impart of Ser. No. 230,299, March l, ABSTRAC'F 1972 This surgical retractor has a pair of opposed slat-l1ke sides interconnected by an elastic V-shaped end piece 52 US. Cl. 128/20, 128/17 SO that the Side slats are elastically bowed in arcuale [51 Im. Cl A6lb 17/02 paths with the concave sides of the slats facing each [58] Field of Search 1. 128/17, 18, 20, 344, other Each of the slats has cooperating ratchet and 12 345 pawl arrangements to permit substantially free lengthwise extension and restricted lengthwise retraction for [56 References Cited enlarging the size of the retractor. An extensible in- UNITED STATES PATENTS flatable tube extends around the retractor and is intermittently connected thereto for extending the retrac- 2 5 3:5: tor in response to increasing fluid pressure in the tube. 2,812,758 1 H1957 Blumenschein l28/20 12 Claims, 5 Drawing Figures SURGICAL RETRACTOR This application is a continuation-in-part of my copending application, Ser. No. 230,799, filed Mar. 1, 1972.

BACKGROUND OF THE INVENTION Surgical retractors are. used for spreading apart or separating the walls of natural body orifices or for spreading the margins of surgical incisions. With the edges of an incision spread apart, the surgeon has access to the underlying tissues or organs permitting a clear view of the surgical site and access for a desired surgical or medical treatment. Thus, for example an abdominal retractor may be used in an abdominal incision to hold back the skin, subcutaneous fat and the internal peritoneal wall for ready access to the many abdominal organs.

In the past, a variety of surgical retractors have been employed. Hand retractors are typically steel instruments with a broad hook-like flap at one end for fitting over the tissue to be retracted. These are then pulled apart by hand and may be held or clamped during the surgical procedure. Some surgical rctractors have arms that are interconnected by a gear or rack and pinion arrangement so that they can be cranked apart and locked in position. Another surgical retractor has four pivotally connected, rigid, curved links which can be clamped in any desired position to hold an incision open. Still another surgical retractor has a rigid peripheral ring with multiple detachable and movable blades that can be clamped at any point on the ring to hold a surgical site open.

Typically, such instruments have beenmade of stainless steel so as to be sterilizable between surgical procedures. The instruments are relatively heavy and stout because, in some cases, substantial forces may be involved in opening an incision and keeping it open. Since specially made, the instruments are expensive and it is costly to repetitively sterilize them and maintain sterility for surgery. Some of the more complicated retractors need to be taken apart for cleaning after surgery and reassembled before use.

It is desirable to provide a retractor that is sufficiently inexpensive that it can be disposed of after a single use thereby obviating cleaning and sterilization between uses. Such an instrument should be simple, rugged and versatile. Preferably such a retractor is enlarged without excessive effort on the part of the surgical staff.

BRIEF SUMMARY OF THE INVENTION There is, therefore, provided in practice of this invention according to a presently preferred embodiment a surgical retractor having a pair of elongated elastic slats interconnected at their respective ends by a V-shaped end piece with divergence at each end so that the slats elastically bow in arcuate paths therebetween. Ratchet means are provided for freely extending the length of the slats and resisting longitudinal contraction thereof. An extensible inflatable tube may be used around the retractor for extension thereof in response to fluid pressure.

DRAWINGS These and other features and advantages of the present invention will be appreciated as the same becomes better understood by reference to the following detailed description of a presently preferred embodiment when considered in connection with the accompanying drawings wherein:

FIG. 1 illustrates in a general plan view a surgical retractor constructed according to principles of this invention;

FIG. 2 is a transverse cross section of one extendible side arm of the retractor of FIG, 1;

FIG. 3 illustrates in side view a side piece for the surgical retractor;

FIG. 4 is a fragmentary longitudinal cross section of an extension ratchet on the side piece; and

FIG. 5 is a fragmentary perspective view of an inflatable extension tube on the retractor.

DESCRIPTION FIG. 1 illustrates in plan view an embodiment of surgical retractor constructed according to principles of this invention. As illustrated in this embodiment, a pair of elastically bendable and freely extensible side slats are each formed of a pair of extension pieces 10. At each end of the surgical retractor, there is a somewhat V-shaped end piece 11 so that the retractor has a generally elongated double curved outline approximately as illustrated in FIG. 1. The elastically bent side pieces 10 are interconnected by the end pieces 11 which are also elastic but with a somewhat higher section modulus adjacent the tip of the V to maintain the desired shape.

Each of the side slat pieces 10 has a male cross section for about half its length and a female cross section for about half its length. An outside view of one of the side slats is seen in FIG. 3. One end 12 has a male cross section and the other end 13 has a female cross section illustrated in the transverse cross section of FIG. 2.

FIG. 2 is a transverse cross section of a pair of the side slats in the portion where the male and female portions 12 and 13, respectively, are engaged. The female member 13 has a curved web 14 forming its principal vertical extent. On its inner or concave side, that is, the side facing the male portion 12 of the other side slat of the surgical retractor, the female end has a raised lip 16 along the top and bottom edges. On its outside face, the female end has a pair of hook-like flanges 17 extending along the length. Very broadly, the female end thus has a transverse cross section somewhat like an I-beam.

The male end 12 also has a curved web 18 extending as the principal portion of its height. The curvature of the two webs 14 and 18 is such that they bow apart from each other. The opposite edges of the web 18 fit into the re-entrant channel formed by the hook-shaped flanges 17 on the femaleportion. Thus, the male end is kept captive in a transverse direction but is free to slide in a longitudinal direction along the female end of an adjacent piece. A pair of ribs 19 extend outwardly from the web 18 along the length of the male portion. The ribs 19 are spaced ashort distance apart from the edges of the web 18 so as to clear the tips of the hookshaped flanges 17. Thus, the male portion of the side slat piece has a transverse cross section somewhat in the shape of a bench or Greek letter pi.

A series of ratchet teeth 21 extend along the length of the inside of the web 18 on the male end. A short row of pawl teeth 22 are provided on the outer face of the web 14 on the female end as may be seen in FIG. 4 which comprises a fragmentary longitudinal cross section thereof.

As best seen in FIG. 2, the pawl teeth 22 engage the ratchet teeth 21 between the webs I4 and 18 of the female and male ends of adjacent pieces. The teeth of the ratchet and pawl are oriented to permit motion in a direction tending to extend the length of the side slat formed of the interconnected male and female ends of the extension pieces. 1 The teeth inhibit or restrict lengthwise contraction of the side slat. The pawl teeth can ride over the ratchet teeth due to elastic deformation of the webs I4 and 18 as cammed apart by the teeth.

The end V-shaped pieces 11 are also provided with male and female end portions analagous to those on the side slat extension pieces. This permits assembly of any desired combination of end and side pieces and relative extension of the end piece relative to a side piece as well as extension between a pair of adjacent side pieces.

When it is desired to release the ratchet and pawl arrangement thus provided, one need only pinch the female portion at its side edges adjacent the flanges 17. Such pinching causes the curved webs to bend further and be spaced apart a greater distance at their mid section thereby disengaging the pawl teeth from the ratchet teeth and permitting the side slats to be contracted in a lengthwise direction.

A pair of stop teeth 23 are provided on the web 14 of the female portion and a corresponding pair of stop teeth 24 are provided on the web 18 of the male portion. These teeth 23 and 24 face oppositely to the ratchet and pawl teeth. This permits the male end of one extension piece to be inserted into the female end of another extension piece, however, it limits the extent of withdrawal of the two parts so that over-extension of the side slats is avoided.

In order to use the surgical retractor in, say, an abdominal incision, the incision is made and the retractor inserted in a contracted state. Typically, the side slats are substantially straight or only slightly curved when made and when inserted into the incision. The side slats may be held close to each other when the retractor is inserted. The flesh to be retracted fits between the two ribs 19 on the male portions of the slat length and the flanges 17 on the female member along the rest of the slat length and is, hence, held substantially captive in the channels adjacent the webs 18 and 14.

After positioning the retractor in the incision, the two side slats may be spread apart. As the slats diverge adjacent their ends as they are spread apart, they elastically bend along their length in a plane transverse to the webs. This elastic bowing of the side slats forms a double curved opening between the sides of the retractor approximately as shown in FIG. 1. In addition to increasing divergence of the side slats, their length may also be increased merely by forcing the two end portions of the surgical retractor away from each other. This activates the ratchet and pawl arrangement between the male and female portions and permits longi tudinal extension of the retractor. Such longitudinal extension may be employed for lengthening the available surgical site or may merely provide the additional length required as the side slats are bowed apart. It will be noted that as the stresses due to tissue being retracted increase as the surgical site is opened, the curvature of the side slats typically increases as well thereby strengthening the slats against buckling. Since both the angle at the end of the slats and the length of the slats is adjustable, the retractor is quite versatile and may be used in long narrow openings or short wide ones.

When it is desired to close the surgical site, the retractor can be collapsed quite readily. The length of the side slats is decreased by pinching the upper and lower edges of the side slats adjacent the pawl teeth towards each other thereby further bowing the webs l4 and 18 and disengaging the pawl teeth 22 from the ratchet teeth 21. The male portion can then slide into the female portion freely for contracting the side slats.

A surgical retractor as described can be enlarged by manually spreading the sides and extending the slats. It may be desirable, however, for minimized effort to provide means for extending the retractor in response to increasing fluid pressure. An extensible inflatable tube 26 is therefore provided around the outside of the surgical retractor. As best seen in FIG. 2, the tube 26 lies against the web 18 between the ribs 19 on the outside of the retractor. Preferably the cross section of the tube is flattened to fit rather closely between the ribs without extending outwardly a great distance. In those portions of the periphery of a surgical retractor where the tube is adjacent a female portion of the side or end pieces it lies between and is generally held captive by the flanges 17. Preferably the peripheral tube 26 has a bellows-like configuration over much of its length as illustrated in FIG. 5. Intermittent smooth portions 27 are provided along the length of the tube and these smooth portions are adhesively bonded to the web 18 of the male portion of the retractor. The bellows por tions 28 between the smooth parts 27 span the intersection between adjacent male and female portions of the retractor and may extend along the entire female portion.

A tube 29 is connected to the peripheral tube 26 and leads to a source of fluid pressure 31. This fluid pressure may be a simple hand squeeze bulb and release valve so that pneumatic pressure may be applied within the peripheral tube 26. If desired the connecting tube 29 can be terminated with a sealing plug through which the needle of a syringe may be inserted. This permits the tube 26 to be inflated with a sterile saline solution, for example, so that in case of rupture of the tube there is no hazard to the patient.

When the inflatable tube is used on a surgical retractor the retractor is inserted in an incision as hereinabove described in a collapsed or retracted state. Fluid is then added to the tube and the inflation causes the bellows portions 28 to extend thereby causing the pieces of the retractor to slide relative to each other and enlarge the retractor. Enlargement of the retractor is thus readily obtained by simple application of fluid pressure. Retraction of the edges of an incision is thereby made easier for the surgical team.

The inflatable tube 26 is on the outside of the retrac tor and engages the flesh at the edge of the incision thereby cushioning it from the retractor. Typically, sterilizable silicone rubber or the like is used for the inflatable tube. It is preferred that the tube be on the outside of the retractor so as to be remote from the surgical site, thereby providing a greater assurance against accidental puncture of the tube during the course of surgery. When it is desired to remove the retractor from the surgical site the fluid pressure in the tube is relieved and the retractor ratchets collapsed in the same manner hereinabove described.

lt will also be apparent that if desired the ratchets can be deleted from the several pieces of the surgical retractor and it can be maintained in its opened position by the fluid pressure alone. In that case gradual release of the fluid pressure permits contraction of the retractor due to the forces of the tissues. Such retraction may be manually assisted if desired. The end and side pieces of the retractor are preferably made by die casting or rubber mold casting of any of a variety of modern plastic or synthetic materials which have already come into wide use in hospitals and other medical practice. Many such materials are readily sterilizable at the time of manufacture and assembly and are then individually packaged, not to be opened until required for surgery. Since such retractors can be made economically, they can be used once and then discarded, thereby obviating cleaning and resterilization.

The choice of plastic materials is also advantageous in providing an appropriate degree of elastic bowing of the side slats when the retractor is used. The shapes of the male and female members forming the side slats are such that substantial changes in section modulus can be made without substantial changes in the overall dimensions of the side slats. if desired, steel strips can be imbedded in the plastic for controlled stiffness and strength. With such possible variations, retractors for symmetrical or asymmetrical opening of surgical sites can readily be provided, and substantial changes in size and the stiffness of the surgical retractor can be made in the course of design for particular applications.

Although limited embodiments of surgical retractor constructed according to principles of this invention have been described and illustrated herein, many modifications and variations will be apparent to one skilled in the art. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described.

What is claimed is: i

1. A surgical retractor comprising:

a first elongated elastic side slat;

a second elongated elastic side slat facing the first slat;

means for freely extending the length of the first and second slats and resisting contraction thereof; and a V-shaped end piece at least partially elastically deflectible at each end of the retractor connecting each end of the first slat to the respective end of the second slat with mutual divergence of the two slats at each end so that the slats elastically bow in mutually spaced apart arcuate paths between their ends with the concave sides of the slats facing each other.

2. A surgical retractor as defined in claim 1 wherein the means for extending comprises an extensible inflatable tube on the outside of the slats and intermittently connected thereto.

3. A surgical retractor as defined in claim 2 further comprising means for inflating the tube.

4. A surgical retractor as defined in claim 1 wherein each slat comprises a pair of interengaging side pieces slidable lengthwise relative to each other, and wherein the means for extending comprises:

ratchet means on one of the side pieces and pawl means on the other side piece cooperating for substantially free lengthwise extension and restricted lengthwise contraction.

5. A surgical retractor as-defined in claim 4 wherein each of the side pieces comprises a curved transverse web, the two webs having their concave sides facing each other and wherein the ratchet means comprises a plurality of teeth spaced along the length of the concave side of one web and the pawl means comprises at least one tooth on the concave side of the other web for engaging the ratchet teeth.

6. A surgical retractor as defined in claim 5 wherein one of the side pieces comprises a pair of opposed hook-like flanges extending lengthwise along the side edges on the concave side of the lip and wherein the web of the other side piece fits between the flanges.

7. A surgical retractor as defined in claim 5 wherein each of the side slats includes a pair of spaced apart ribs extending along the length thereof for forming a channel for receiving tissue adjacent a surgical incision or the like.

8. A surgical retractor as defined in claim 7 wherein the means for extending further comprises means for slidably extending the side pieces relative to each other in response to increasing fluid pressure.

9. A surgical retractor as defined in claim 8 wherein the means for slidably extending comprises an extensible inflatable tube in the channel and connected to each side piece.

10. An extension side piece for a surgical retractor of the type having at least a pair of side slats interconnected by a pair of end pieces that cause the side slats to mutually diverge comprising:

an elastic slat having a male cross section for about half its length and a female cross section for about half its length;

ratchet means extending along one of the half lengths; and

pawl means on the other half length, said ratchet means and pawl means for cooperating with cone sponding pawl means and ratchet means respectively, for substantially free lengthwise extension and restricted lengthwise contraction.

11. An extension piece as defined in claim 10 wherein the female cross section comprises:

a transverse web; and

a pair of opposed hook-like flanges extending along opposite edges of the web; and the male cross section comprises:

a transverse web fittable between the flanges of a female member having a cross section like that of the female half; and wherein the ratchet means is along one web and the pawl means is on the other web.

12. An extension piece as defined in claim 1 1 further comprising an extensible inflatable tube connected to one face of the elastic slat on one of its half lengths.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US447761 *Jun 23, 1890Mar 10, 1891 Speculum
US2313164 *Nov 13, 1939Mar 9, 1943Nelson Walfred ASelf-retaining surgical retractor
US2812758 *Jul 26, 1955Nov 12, 1957Blumenschein John CSurgical retractor
US3570475 *Nov 14, 1968Mar 16, 1971Weinstein MandelSurgical retractor
GB1151993A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4412532 *Dec 21, 1981Nov 1, 1983Anthony Richard REyelash retractor
US4984564 *Sep 27, 1989Jan 15, 1991Frank YuenSurgical retractor device
US5159921 *Nov 27, 1990Nov 3, 1992Hoover Rocklin LFor holding open a surgical incision
US5231974 *May 29, 1992Aug 3, 1993Giglio Steven RSelf retaining retractor
US5308327 *Nov 25, 1991May 3, 1994Advanced Surgical Inc.Self-deployed inflatable retractor
US5309896 *Nov 19, 1991May 10, 1994Origin Medsystems, Inc.Retraction methods using endoscopic inflatable retraction devices
US5318586 *Jan 19, 1993Jun 7, 1994Erkan ErerenLaparoscopic and thoracoscopic expandable instruments
US5337754 *Sep 1, 1993Aug 16, 1994Advanced Surgical, Inc.Inflatable isolation bag
US5361752 *May 4, 1992Nov 8, 1994Origin Medsystems, Inc.Retraction apparatus and methods for endoscopic surgery
US5400773 *Jan 19, 1993Mar 28, 1995Loma Linda University Medical CenterInflatable endoscopic retractor
US5431173 *May 29, 1992Jul 11, 1995Origin Medsystems, Inc.Removing gallbladder from an abdominal cavity
US5450843 *Mar 14, 1994Sep 19, 1995Origin Medsystems, Inc.To gain access to an adjacent tissue
US5460170 *Aug 23, 1994Oct 24, 1995Hammerslag; Julius G.Adjustable surgical retractor
US5468248 *Aug 24, 1993Nov 21, 1995Origin Medsystems, Inc.Endoscopic inflatable retraction devices for separating layers of tissue
US5501653 *Dec 6, 1993Mar 26, 1996Origin Medsystems, Inc.Abdominal wall lifting retractor with hinged cross-member
US5520609 *May 18, 1993May 28, 1996Origin Medsystems, Inc.Apparatus and method for peritoneal retraction
US5522790 *Mar 14, 1994Jun 4, 1996Origin Medsystems, Inc.For retracting an organ inside the body to gain access to an adjacent tissue
US5524633 *Oct 1, 1993Jun 11, 1996Advanced Surgical, Inc.Self-deploying isolation bag
US5527264 *Feb 8, 1994Jun 18, 1996Origin Medsystem, Inc.For retracting an organ inside the body to provide access to treat tissue
US5588951 *Jan 27, 1995Dec 31, 1996Loma Linda University Medical CenterInflatable endoscopic retractor with multiple rib-reinforced projections
US5634883 *May 26, 1995Jun 3, 1997Origin Medsystems, Inc.For lifting the abdominal wall for peritoneal retraction
US5643178 *May 26, 1995Jul 1, 1997Origin Medsystems, Inc.Method for peritoneal retration
US5676636 *Jun 24, 1996Oct 14, 1997Origin Medsystems, Inc.Method for creating a mediastinal working space
US5681341 *Mar 14, 1995Oct 28, 1997Origin Medsystems, Inc.Flexible lifting apparatus
US5704372 *Jul 29, 1994Jan 6, 1998Origin Medsystems, Inc.Method of providing access through the abdominal wall to repair a hernia
US5716327 *Jun 25, 1996Feb 10, 1998Origin Medsystems, Inc.Body wall retraction system for wide cavity retraction
US5716329 *Sep 30, 1996Feb 10, 1998Dieter; Michael A.Disposable expandable speculum
US5722986 *Jul 24, 1996Mar 3, 1998Origin Medsystems, Inc.Inflatable devices for separating layers of tissue, and methods of using
US5728119 *Oct 13, 1995Mar 17, 1998Origin Medsystems, Inc.Method and inflatable chamber apparatus for separating layers of tissue
US5743850 *Aug 24, 1994Apr 28, 1998Origin Medsystems, Inc.Endoscopic inflatable retraction device with additional inflatable chamber
US5743851 *Jun 4, 1996Apr 28, 1998Origin Medsystems, Inc.For retracting an organ inside the body to gain access to an adjacent tissue
US5779728 *Jan 5, 1996Jul 14, 1998Origin Medsystems, Inc.Method and inflatable chamber apparatus for separating layers of tissue
US5803901 *Mar 13, 1997Sep 8, 1998Origin Medsystems, Inc.Inflatable devices for separating layers of tissue and methods of using
US5823945 *Jun 5, 1997Oct 20, 1998Origin Medsystems, Inc.For retracting an organ inside the body to gain access to adjacent tissue
US5823946 *Jun 5, 1997Oct 20, 1998Origin Medsystems, Inc.Method for creating a mediastinal working space
US5836871 *Jun 10, 1996Nov 17, 1998Origin Medsystems, Inc.Method for lifting a body wall using an inflatable lifting apparatus
US5865728 *Nov 21, 1995Feb 2, 1999Origin Medsystems, Inc.Method of using an endoscopic inflatable lifting apparatus to create an anatomic working space
US5925058 *Jun 18, 1997Jul 20, 1999Origin Medsystems, Inc.Method and inflatable chamber apparatus for separating layers of tissue
US5941819 *Jun 5, 1997Aug 24, 1999Origin Medsystems, Inc.Apparatus for creating a mediastinal working space
US5984867 *Aug 15, 1997Nov 16, 1999Heartport, Inc.Surgical retractor and method of retracting
US6152895 *Sep 27, 1993Nov 28, 2000Wilk; Peter J.Method for use in laparoscopic hernia repair
US6331157Apr 15, 1999Dec 18, 2001Heartport, Inc.Apparatus and methods for off-pump cardiac surgery
US6361543Mar 18, 1997Mar 26, 2002Sherwood Services AgInflatable devices for separating layers of tissue, and methods of using
US6416468Oct 20, 1999Jul 9, 2002Heartport, Inc.Method of retracting a portion of a patient's body
US6582364May 7, 2001Jun 24, 2003Atropos LimitedRetractor and method for use
US6605037Oct 26, 1998Aug 12, 2003Sherwood Services AgEndoscopic inflatable retraction device
US6846287Apr 29, 2002Jan 25, 2005Atropos LimitedSurgical device for retracting and/or sealing an incision
US6932765Sep 9, 2004Aug 23, 2005Minnesota Scientific, Inc.Apparatus for retaining otherwise hand-held retractors
US6939297Nov 6, 2001Sep 6, 2005Heartport, Inc.Apparatus and methods for cardiac surgery
US7033319 *Apr 20, 2004Apr 25, 2006Apple Medical CorporationAbdominal retractor
US7081089Jul 1, 2005Jul 25, 2006Atropos LimitedSurgical device for retracting and/or sealing an incision
US7294103Nov 12, 2004Nov 13, 2007Endoscopic Technologies, Inc.Retractor with inflatable blades
US7300399Nov 24, 2004Nov 27, 2007Atropos LimitedSurgical device for retracting and/or sealing an incision
US7309312Jan 12, 2005Dec 18, 2007Minnesota Scientific, Inc.Apparatus for retaining otherwise hand-held retractors and method of use
US7445597Feb 27, 2003Nov 4, 2008Atropos LimitedRetractor
US7537564Mar 23, 2005May 26, 2009Atropos LimitedWound retractor device
US7540839Aug 6, 2003Jun 2, 2009Atropos LimitedWound retractor
US7559893Oct 6, 2003Jul 14, 2009Atropos LimitedWound retractor device
US7594888 *Oct 21, 2005Sep 29, 2009Depuy Spine, Inc.Expandable ports and methods for minimally invasive surgery
US7695487Apr 24, 2003Apr 13, 2010General Surgical Innovations, Inc.Balloon dissection apparatus
US7744617Mar 19, 2003Jun 29, 2010Covidien AgMethod and inflatable chamber apparatus for separating layers of tissue
US7766823Aug 11, 2003Aug 3, 2010Covidien AgEndoscopic inflatable retraction device, method of using, and method of making
US7867164Sep 22, 2003Jan 11, 2011Atropos LimitedWound retractor system
US7998068Oct 11, 2005Aug 16, 2011Atropos LimitedInstrument access device
US8016755Dec 3, 2010Sep 13, 2011Applied Medical Resources CorporationSurgical access apparatus and method
US8021296Jul 14, 2006Sep 20, 2011Atropos LimitedWound retractor
US8070676Dec 3, 2010Dec 6, 2011Applied Medical Resources CorporationSurgical access apparatus and method
US8105234Jan 27, 2009Jan 31, 2012Applied Medical Resources CorporationSurgical access apparatus and method
US8109873May 12, 2008Feb 7, 2012Applied Medical Resources CorporationSurgical retractor with gel pad
US8157835Jun 1, 2010Apr 17, 2012Applied Medical Resouces CorporationAccess sealing apparatus and method
US8172869Apr 12, 2010May 8, 2012Tyco Healthcare Group LpBalloon dissection apparatus
US8187177Nov 29, 2006May 29, 2012Applied Medical Resources CorporationSurgical instrument access device
US8187178Jun 5, 2008May 29, 2012Atropos LimitedInstrument access device
US8226552May 12, 2008Jul 24, 2012Applied Medical Resources CorporationSurgical retractor
US8235054Feb 22, 2011Aug 7, 2012Applied Medical Resources CorporationWound retractor
US8246539 *Mar 2, 2010Aug 21, 2012Mardil, Inc.Pericardium management method for intra-pericardial surgical procedures
US8262568Oct 13, 2009Sep 11, 2012Applied Medical Resources CorporationSingle port access system
US8267858Jan 18, 2011Sep 18, 2012Applied Medical Resources CorporationWound retractor with gel cap
US8308639Mar 17, 2011Nov 13, 2012Applied Medical Resources CorporationSplit hoop wound retractor with gel pad
US8313431Oct 15, 2010Nov 20, 2012Applied Medical Resources CorporationSplit hoop wound retractor
US8317691Apr 20, 2009Nov 27, 2012Atropos LimitedWound retractor device
US8343047Jan 22, 2009Jan 1, 2013Applied Medical Resources CorporationSurgical instrument access device
US8357086 *May 3, 2012Jan 22, 2013Applied Medical Resources CorporationSurgical instrument access device
US8375955Feb 5, 2010Feb 19, 2013Atropos LimitedSurgical procedure
US8388526Apr 23, 2008Mar 5, 2013Applied Medical Resources CorporationWound retraction apparatus and method
US8414487Feb 8, 2011Apr 9, 2013Applied Medical Resources CorporationCircular surgical retractor
US8480575Aug 28, 2012Jul 9, 2013Applied Medical Resources CorporationSingle port access system
US8496581Mar 15, 2012Jul 30, 2013Applied Medical Resources CorporationSurgical access apparatus and method
US8540628Jan 13, 2011Sep 24, 2013Covidien LpExpandable thoracic access port
US8574155Jan 13, 2011Nov 5, 2013Covidien LpExpandable surgical access port
US8579810 *Jan 13, 2011Nov 12, 2013Covidien LpExpandable thoracic access port
US8597180Jun 23, 2011Dec 3, 2013Covidien LpExpandable thoracic access port
US8647265Jan 14, 2011Feb 11, 2014Applied Medical Resources CorporationHand access laparoscopic device
US8657740Jan 27, 2010Feb 25, 2014Atropos LimitedInstrument access device
US8657741Aug 15, 2011Feb 25, 2014Atropos LimitedWound retractor
US8672839Sep 13, 2011Mar 18, 2014Applied Medical Resource CorporationSurgical access apparatus and method
US8703034Aug 23, 2011Apr 22, 2014Applied Medical Resources CorporationMethod of making a tack-free gel
US8721537Jun 27, 2013May 13, 2014Applied Medical Resources CorporationSingle port access system
US8734336Apr 23, 2009May 27, 2014Atropos LimitedWound retractor device
US8740785Oct 19, 2010Jun 3, 2014Atropos LimitedWound retractor system
US8752553Jun 20, 2003Jun 17, 2014Atropos LimitedApparatus for use in surgery and a valve
US8758236May 9, 2012Jun 24, 2014Applied Medical Resources CorporationWound retractor
US8777849Jan 13, 2011Jul 15, 2014Covidien LpExpandable thoracic access port
US8808172 *May 7, 2009Aug 19, 2014DePuy Synthes Products, LLCMethod and apparatus for laterally accessing an intervertebral disc space
US20100152542 *Mar 2, 2010Jun 17, 2010Acorn Cardiovascular, Inc.Pericardium management method for intra-pericardial surgical procedures
US20110065999 *May 7, 2009Mar 17, 2011James ManzanaresMethod and apparatus for laterally accessing an intervertebral disc space
US20110201894 *Jan 13, 2011Aug 18, 2011O'prey CormacExpandable thoracic access port
US20120215070 *May 3, 2012Aug 23, 2012Applied Medical Resources CorporationSurgical instrument access device
WO2012154845A1 *May 9, 2012Nov 15, 2012Applied Medical Resources CorporationWound retractor
Classifications
U.S. Classification600/207, 600/208, 600/215
International ClassificationA61B17/00, A61B17/02
Cooperative ClassificationA61B2017/00539, A61B2017/00557, A61B17/0293
European ClassificationA61B17/02R