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Disposable wound retractor and drape and method of using same

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US3522800A
US3522800A US3522800DA US3522800A US 3522800 A US3522800 A US 3522800A US 3522800D A US3522800D A US 3522800DA US 3522800 A US3522800 A US 3522800A
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sheet
incision
stays
plastic
material
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Arthur J Lesser
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Arthur J Lesser
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/04Macromolecular materials
    • A61L31/048Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICAL ARTICLES
    • A61L31/00Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/04Macromolecular materials
    • A61L31/06Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B2017/0212Cushions or pads, without holding arms, as tissue retainers, e.g. for retracting viscera

Description

United States Patent Los Angeles, California [21] Application N0.: 567,329

[22] Filed: July 19,1966 [45] Patented: Aug. 4, 1970 Continuation-in-part of Ser. No. 467,859, June 29, 1965, now abandoned.

[54] DISPOSABLE WOUND RETRACTOR AND DRAPE AND METHOD OF USING SAME 9 Claims, 10 Drawing Figs.

[52] US. Cl. 128/20,

128/132 [51] Int. Cl. A611) 17/02 [50] Field ofSearch 128/20,

132,132D,l55,156,82,127,133,134,477; 222/107; 128/20, 132, 132(P). 89, 91

[56] References Cited UNITED STATES PATENT 1,944,009 1/1934 Homer 128/20 2,401,784 6/1946 Zahara..... 222/107 2,430,046 11/1946 Dreyfus... 222/107 2,933,083 4/1960 Kozdas 128/132 3,182,656 5/1965 Pyne 128/132 3,263,680 8/1966 Morgan 128/132 3,288,131 11/1966 Garland 128/20 3,301,259 l/1967 McLeod... 128/477XR 3,314,422 4/1967 Phillips 128/132 3,332,417 7/1967 Blanford et al 128/132 3,347,226 10/1967 Harrower 128/132 3,364,919 l/l968 Hunnicutt.... 1.28/20 3,372,696 3/1968 Rudie 128/132 FOREIGN PATENTS 574,529 1/1946 Great Britain. 128/89 Primary Emminer- Richard A Gaudet Assistant llraminer- Kyle L. Howell Attorneys- Finkelstein and Mueth ABSTRACT: A novel disposable wound retractor and drape comprising a thin plastic sheet having a length substantially greater than its width containing longitudinally thereof at one end a plurality of generally parallel transversely spaced thin elongated meta-l reinforcing stays of generally rectangular crosssection, one of the long dimensions of each stay terminating at the edge of the sheet and the length of the stays being less than the length of the sheet.

Patented Aug. 4, 1970 3,522,800

Sheet 1 /z ZZ'G- .5

Patented Aug. 4, 1970 3,522,800

Sheet of 2 I I l u l I I I 7 1 I I Ira-t 1d,

BY i 42 US. PATENT 3,522,300 DISPOSABLE WOUND RETRACTOR AND DRAPE AND METHOD OF USING SAME The following specification is a continuation-in-part of Ser. No. 467,859, filed June 29, I965, and now abandoned.

This invention pertains to a novel reinforced plastic sheet material containing long thin metal reinforcing stays particularly adapted for use as a surgical drape and in the construction of roll-up tubular containers for tooth paste, ointment, blood and the like.

Previously, there have been developed inexpensive surgical drapes which may be applied in the operating room directly to the skin of the surgical patient to form a surgically sterile field upon the patient with the immobilization of any residual bacteria of the patients skin adjacent to the area where the incision is to be made.

However, I have found that a surgical drape of the foregoing type is not completely adequate in practice. The ordinary thin plastic surgical drape is not adapted to be wrapped around the edge of the wound or incision and thus does not effectively protect the deeper internal area of the wound from contamination with bacteria and/or tumor cells which may be present around the edge of the incision. Also, the conventional drape has a tendency to peel off, with the possibility of bacteria from the skin being free to enter the incision. The known thin plastic surgical drapes were also ineffective and of no value in keeping the incision open in order to permit the surgeon to perform the required movements inside the wound during the course of the operation. For this reason it is necessary to apply separate retractors in order to maintain adequate access to the interior of the incision.

Thus, it is a primary object of this invention to provide a novel reinforced plastic sheet material uniquely adapted for use as a surgical drape which possesses many advantages over the known surgical drapes ofthe prior art.

More particularly, it is an object of this invention to provide a novel surgical drape material which is adapted to be wrapped around the edges of an incision to reduce the possibility of contamination of the interior of the incision from bacteria and other matter from the edge of the incision.

It is a related object of the invention to provide a surgical drape material containing metal stay reinforcements which, upon being wrapped around the edge of the incision, possess sufficient strength in order that the surgical drape itself may be used as a retractor for the purpose of keeping the wound open during the course of the operation.

In yet another aspect ofthis invention it is an object thereof to provide a novel reinforced plastic sheet material particularly adapted for use in the construction of roll-up tubular containers for liquid and paste materials.

These and other objects of my invention will become apparent from the more detailed description which follows, and the accompanying drawings.

Briefly, the present invention comprises a novel reinforced normally non-tacky, thin plastic sheet, usually having a length substantially greater than its width, containing at one end at least one, and normally several, thin elongated reinforcing stays of a length substantially less than the length of the sheet and having a generally rectangular cross-section. The invention additionally comprehends a method of draping and retracting the edge of a wound employing this novel reinforced plastic sheet material. Also encompassed by the invention are tubular container bodies for containing liquid or paste materials, the walls of which are composed of the novel reinforced plastic sheet material.

Turning now to the drawings:

FIGURE 1 is a plan view of a form of reinforced plastic sheet material ofthis invention.

FIGURE 2 is a crosssectional view taken along the line 2-2 in FIGURE 1.

FIGURE 3 is a cross-sectional line of the plastic sheet material of FIGURE l which has been folded over so as to be adapted to receive the edge of an incision within the fold.

FIGURE 4 is a plan view of an incision having on either side thereof lengths of the reinforced plastic sheet material and having applied thereto sufficient tension in order to spread the incision to permit access to the interior of the incision.

FIGURE 5 is a partial cross-sectional view of another embodiment of the reinforced plastic sheet material wherein the reinforcing stays are made of spring metal having a normal configuration such that the one edge of the sheet is folded and adapted to receive the edge of the incision.

FIGURE 6 is a plan view of a roll-up paste or liquid tubular container the walls of which are constructed of the reinforced plastic sheet of this invention.

FIGURE 7 illustrates another and preferred embodiment of the present invention wherein transverse flexible reinforcing members 16 and 18 are provided at each end of the stays 12. The members 16 and 18 are preferably hollow plastic tubes such as Tygon or other similar materials. The members 16 and 18 are generally, although not necessarily, perpendicular to the reinforcing stays and may be greater than, less than or equal to the width of the drape 10. Preferably the members 16 and 18 are at least as long as the width of drape 10 or longer since it has been found that this arrangement aids in the holding of the end of the drape in the incision.

FIGURE 8 shows yet another embodiment of the present invention in plan view. In this embodiment, reinforced openings 20 and 22 are provided in order to facilitate manual retraction of the wound by applying tension forces to the drapes.

FIGURE 9 is a sectional view taken along the line 9-9 in FIGURE 8.

FIGURE 10 is a plan view of another form of plastic drape within the scope of the present invention. In this embodiment the means for manual retraction is provided by the substantial rigid tubing 24 affixed to drape 10. The protruding ends of tubing 24 provide a convenient means for the application of the tension to the drape.

Referring now to the drawings in greater detail, it will be seen that in FIGURE 1 the plastic sheet material 10 contains a plurality of transversely spaced metal reinforcing stays 12 at one end thereof. These stays may be flat as shown in FIGURE 2. However, when it is desired to form the plastic drape material around the edge of an incision the stays are sufficiently malleable so that they may be folded over as in FIGURE 3 and thus fitted to the incision. Alternatively, the stays 12 may be formed of spring metal material 14 as shown in FIGURE 5, in which case the stays need not be folded over prior to or at the time of placing the plastic drape around the edge ofthe incision.

In using the reinforced plastic sheet material of this invention, for the surgical draping of the patient to provide a sterile draped covering around the operative field and extending around the edge of the incision, the sheet material is formed to the approximate contour of the skin and the edge of the sheet having the reinforced stays is folded around the edge of the incision. At times the site of the proposed incision is prepared by adhesively securing to the area a thin sheet of conventional surgical draping material. The incision is made through the drape material after which the novel reinforced plastic sheet material of this invention is applied and folded around the edge of the incision. Thereafter, tension may be applied to the sheet material to retract the edges of the incision and permit access to the interior of the wound. The tension necessary for retraction may be maintained by the use of towelclips placed laterally through the drape toward the underlying drape, surgical table, or skin. The tension required for traction may also be provided by the use of weights attached to the ends of the drapes. The tension may also be applied and maintained manually. This technique is facilitated by the use of drapes having the features illustrated by FIGURES 8 through 10 as will be immediately apparent to those skilled in the art. The means for manual retraction shown in FIGURES 8 to 10 are merely illustrative and various other expedients may be utilized including handles, grips, tabs and the like. Once the tension has been applied to the drapes it may be maintained 3 manually or byweights as indicated above ,orb'y adhering the drapes to the underlying skin or dressing by the use of glue or other adherent material. For example, the underside of the drapes of the present invention may be provided with a Velcro material which can be adhered to the complementary Velcro material on the underlying dressing. ln yet another way, the tension may be maintained on the drapes for retraction by the use of a belt running beneath the patient and connected at each of its ends to the free ends ofthe drapes.

Any number of drapes may be utilized in draping and retracting the edge of an incision according to the present invention. For example, a single drape may be arranged at either side of the incision as shown in the drawings. Alternatively, 3, 4, 5 or more drapes may be arranged around the incision to completely encircle it, and provide for overlapping flaps surrounding the edge of the incision. Many other applications of the surgical drape of this invention will be immediately apparent to surgeons and other persons skilled in the art.

The surgical drape can, of course, be manufactured in various sizes and shapes (rectangular, square, etc.) suitable for different sizes ofincisions. In general, large, medium and small drapes are 25, 18 and 12 cm. long, corresponding to the different sizes of the incision. The stays are normally about 1/10 to H2 the length of the drape and measure from 5 to 15 centimeters in length and H2 to 3/4 centimeters in width. The thickness of the stays is sufficient not to yield to traction, on the order of0.05 to 0.2 centimeters. The stays may be made of a spring metal or may be a tempered metalor other material, preferably of a malleable nature. The stays may be sealed within two or more layers of plastic film by heat sealing, or simply adhered to the surface of the film.

While the foregoing discussion has particularly dwelt on the use of the novel plastic sheet material of this invention as a surgical drape, it is emphasized that the invention additionally envisions other uses therefor, such as in tubular containers of the familiar shape shown in FIGURE 6 for tooth paste, ointments and the like. The walls of such containers can be advantageously fabricated from the reinforced sheet material of the present invention. This may be accomplished by forming a length of the sheet material into a generally tubular configuration, and fitting one end thereof with an externally threaded conventional metal fitting adapted to receive an internally threaded closure cap. Through the other end of the tubing may then be inserted the paste or liquid and thereafter the end tightly sealed by conventional heat sealing techniques. When it is desired to use the material within the tubular container, the cap is then removed and wrapping force is applied to the other end of the container expelling the required amount of the liquid or paste contents from the tube. Since the reinforcing stays are generally longitudinally aligned along the length of the tube, the malleable material will retain the rolled up configuration and may be stored in a rolled up condition indefinitely after release of the wrapping force. The material is therefore as functionally suitable as the conventional metal roll-up containers while at the same time providing a substantial reduction in the cost of materials and also providing a transparent wall through which the contents may be observed for color, quantity and the like.

The materials employed in the sheet material can be varied, as will be apparent to those skilled in the art. Thus, the plastic sheet may be any normally thin transparent film such as Saran (vinyl chloride-vinylidene chloride copolymer), polyvinyl chloride, Mylar (polyethylene terephthalate), polyethylene and polypropylene. The metal stays are normally steel or aluminum, but other metals are also satisfactory.

Many other uses for the novel reinforced plastic sheet material of this invention will become apparent to those skilled in the art. Accordingly, the methods and products herein described constitute the preferred embodiments of the invention and it is to be understood that the invention is not limited to these precise methods and products. The monopoly afforded by this patent is that defined by the scope of the appended claims.

lClaim:

l. A noveldisposable wound retractor and drape comprising a thin plastic sheet having a length substantially greater than its width containinglongitudinally thereof at one end a plurality of generally parallel transversely spaced thin elongated malleable metal reinforcing stays of generally rectangular cross-section, one of the long dimensions of each stay terminating at the edge of said sheet, and the length of the stays being about one-tenth to one-half the length of the sheet, that end of said sheet having the stays being adapted to fold around the edge of an incision and the rest of the sheet being adapted to be disposed generally along the skin of the patient for applying tension to retract the edges of the incision.

2. The novel thin plastic sheet of Claim 1 wherein there is positioned proximate to each end of said stays and transversely thereof a flexible reinforcing member.

3. The novel thin plastic sheet of Claim 1 wherein there is positioned proximate to each end of said stays and transversely thereof a flexible reinforcing member comprising tubular plastic.

4. The novel plastic sheet of Claim 1 wherein there is provided therein a means for manually applying tension to said sheet.

5. A novel disposable wound retractor and drape comprising a thin vinyl plastic sheet having a length substantially greater than its width containing longitudinally thereof at one end a plurality of generally parallel transversely'spaced thin elongated malleable reinforcing stays of generally rectangular cross-section, one of the long dimensions of each stay terminating at the edge of said sheet, and the length of the stays being about one-tenth to one-half the length of the sheet, that end of said sheet having the stays being adapted to fold around the edge of an incision and the rest of the sheet being adapted to be disposed generally along the skin of the patient for applying tension to retract the edges of the incision.

6. A novel disposable wound retractor and drape comprising a thin plastic sheet having a length substantially greater than its width having imbedded longitudinally therein at one end a plurality of generally parallel transversely spaced thin elongated malleable reinforcing stays of generally rectangular cross-section, one of the long dimensions of each stay terminating at the edge of said sheet, and the length of the stays being about one-tenth to one-half the length of the sheet, that end of said sheet having the stays being adapted to fold around the edge of an incision and the rest of the sheet being adapted to be disposed generally along the skin of the patient for applying tension to retract the edges of the incision.

7. A novel disposable wound retractor and drape comprising a thin plastic sheet having a length substantially greater than its width having adhered longitudinally thereto at one end a plurality of generally parallel transversely spaced thin elongated reinforcing stays of generally rectangular cross-section, one of the long dimensions of each stay terminating at the edge of said sheet, and the length of the stays being less than the length of the sheet positioned proximate to each end of said stays and transversely thereof, a flexible reinforcing member, that end of said sheet having the stays being adapted to fold around the edge of an incision and the rest of the sheet being adapted to be disposed generally along the skin of the patient for applying tension to retract the edges of the incision.

8. A method of draping and retracting the edge of an incision which comprises placing around the edge of the incision a novel thin plastic sheet having a length substantially greater than its width containing longitudinally thereof at one end a plurality of generally parallel transversely spaced thin elongated reinforcing stays of generally rectangular cross-section, one of the long dimensions of each of said stays terminating at the edge of said sheet, and the length of the stays being less than the length of the sheet, folding that end of said sheet material having the stays around the edge of the incision, and disposing the rest of the sheet generally along the skin of the patient whereby the same is made receptive to the application of said stays terminating at the edge of said sheet, and the length of the stays being less than the length of the sheet, folding that end of said sheet material having the stays around the edge of the incision, and disposing the rest of the sheet generally along the skin of the patient whereby the same is made receptive to the application of tension forces for retraction of the edges of the incision.

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Cited By (62)

* Cited by examiner, † Cited by third party
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US4048987A (en) * 1973-08-06 1977-09-20 James Kevin Hurson Surgical acid
US4412532A (en) * 1981-12-21 1983-11-01 Anthony Richard R Eyelash retractor
EP0156218A1 (en) * 1984-03-10 1985-10-02 PLASTECH RESEARCH & DESIGN LIMITED Improvements relating to retractors
WO1989004145A1 (en) * 1987-11-09 1989-05-18 Minnesota Scientific, Inc. Flexible retractor
US4848322A (en) * 1988-01-19 1989-07-18 Dash Georgia P Endoscopy shield
US4944311A (en) * 1988-03-09 1990-07-31 Jodel Medical Products, Inc. Surgical instrument retainer
US4945897A (en) * 1989-05-22 1990-08-07 Automated Medical Products Corp. Surgical retractor
US5005590A (en) * 1989-02-17 1991-04-09 Jodel Medical Products, Inc. Surgical instrument tray
US5036866A (en) * 1988-03-09 1991-08-06 Devon Industries, Inc. Surgical instrument retainer
US5065739A (en) * 1989-08-24 1991-11-19 Forrest William J Retractor support assembly
US5109831A (en) * 1989-08-24 1992-05-05 Forrest William J Retractor support assembly
US5123907A (en) * 1991-06-17 1992-06-23 Romaine Richard A Appliance for use in excising skin from stretched skin, and method
US5159921A (en) * 1990-11-27 1992-11-03 Hoover Rocklin L Surgical retractor
US5195538A (en) * 1989-02-17 1993-03-23 Devon Industries, Inc. Surgical instrument tray
US6090043A (en) * 1999-05-17 2000-07-18 Applied Medical Technology, Inc. Tissue retractor retention band
US6093145A (en) * 1997-02-10 2000-07-25 Aesculap Ag & Co. Kg Brain spatula
US6578577B2 (en) 1998-12-01 2003-06-17 Atropos Limited Laparoscopic sealed access device
US6582364B2 (en) 1999-10-14 2003-06-24 Atropos Limited Retractor and method for use
US6626865B1 (en) * 1998-10-23 2003-09-30 P Prisell Ab Method and a device for marking surfaces
US20040097793A1 (en) * 1998-12-01 2004-05-20 John Butler Device
US20040215063A1 (en) * 1993-09-06 2004-10-28 Atropos Ltd. Apparatus for use in surgery and a valve
US6846287B2 (en) 1998-12-01 2005-01-25 Atropos Limited Surgical device for retracting and/or sealing an incision
US20050090717A1 (en) * 1998-12-01 2005-04-28 Frank Bonadio Wound retractor device
US20050155611A1 (en) * 2003-11-05 2005-07-21 Trevor Vaugh Surgical sealing device
US20050197537A1 (en) * 1998-12-01 2005-09-08 Frank Bonadio Wound retractor device
US20050203346A1 (en) * 1999-10-14 2005-09-15 Frank Bonadio Wound retractor device
US20050283050A1 (en) * 2004-06-22 2005-12-22 Ramarao Gundlapalli Devices and methods for protecting tissue at a surgical site
US20060247498A1 (en) * 1998-12-01 2006-11-02 Frank Bonadio Instrument access device
US20070004968A1 (en) * 1998-12-01 2007-01-04 Frank Bonadio Seal for a cannula
US20070083086A1 (en) * 2005-10-11 2007-04-12 Levahn Intellectual Property Holding Company, Llc Shaped retractor blade
US20070118175A1 (en) * 2002-08-08 2007-05-24 John Butler Device
WO2008006380A1 (en) * 2006-07-11 2008-01-17 Region Hovedstaden V/Herlev Hospital A retainer for supporting viscera during open surgery of the abdomen
WO2008029367A2 (en) * 2006-09-08 2008-03-13 Ez Surgical Ltd. Shapeable pad
US7540839B2 (en) 1999-10-14 2009-06-02 Atropos Limited Wound retractor
US7867164B2 (en) 1999-10-14 2011-01-11 Atropos Limited Wound retractor system
US8016755B2 (en) 2000-10-19 2011-09-13 Applied Medical Resources Corporation Surgical access apparatus and method
US8021296B2 (en) 1999-12-01 2011-09-20 Atropos Limited Wound retractor
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US8109873B2 (en) 2007-05-11 2012-02-07 Applied Medical Resources Corporation Surgical retractor with gel pad
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US8187177B2 (en) 2003-09-17 2012-05-29 Applied Medical Resources Corporation Surgical instrument access device
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US8226552B2 (en) 2007-05-11 2012-07-24 Applied Medical Resources Corporation Surgical retractor
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US8262568B2 (en) 2008-10-13 2012-09-11 Applied Medical Resources Corporation Single port access system
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US8465515B2 (en) * 2007-08-29 2013-06-18 Ethicon Endo-Surgery, Inc. Tissue retractors
US8657740B2 (en) 2007-06-05 2014-02-25 Atropos Limited Instrument access device
US8703034B2 (en) 2001-08-14 2014-04-22 Applied Medical Resources Corporation Method of making a tack-free gel
US8758236B2 (en) 2011-05-10 2014-06-24 Applied Medical Resources Corporation Wound retractor
US20140235952A1 (en) * 2010-02-12 2014-08-21 Covidien Lp Expandable thoracic access port
US8932214B2 (en) 2003-02-25 2015-01-13 Applied Medical Resources Corporation Surgical access system
US20150245871A1 (en) * 2012-09-21 2015-09-03 3M Innovative Properties Company Incision protection
US9289115B2 (en) 2010-10-01 2016-03-22 Applied Medical Resources Corporation Natural orifice surgery system
US9289200B2 (en) 2010-10-01 2016-03-22 Applied Medical Resources Corporation Natural orifice surgery system
US9351759B2 (en) 2007-06-05 2016-05-31 Atropos Limited Instrument access device
US9427222B2 (en) 2013-02-04 2016-08-30 Gsquared Medical Llc Retractor/stabilizer for excessive and/or redundant tissue and method of use
US9642608B2 (en) 2014-07-18 2017-05-09 Applied Medical Resources Corporation Gels having permanent tack free coatings and method of manufacture
US9878140B2 (en) 2014-10-01 2018-01-30 Applied Medical Resources Corporation Access sealing apparatus and method

Cited By (125)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048987A (en) * 1973-08-06 1977-09-20 James Kevin Hurson Surgical acid
US4412532A (en) * 1981-12-21 1983-11-01 Anthony Richard R Eyelash retractor
EP0156218A1 (en) * 1984-03-10 1985-10-02 PLASTECH RESEARCH & DESIGN LIMITED Improvements relating to retractors
US4621619A (en) * 1984-03-10 1986-11-11 Plastech Research & Design Limited Retractor having means for attachment to patient's skin
WO1989004145A1 (en) * 1987-11-09 1989-05-18 Minnesota Scientific, Inc. Flexible retractor
EP0386040A4 (en) * 1987-11-09 1990-12-05 Minnesota Scientific, Inc. Flexible retractor
EP0386040A1 (en) * 1987-11-09 1990-09-12 Minnesota Scientific, Inc. Flexible retractor
US5080088A (en) * 1987-11-09 1992-01-14 Minnesota Scientific, Inc. Flexible retractor
US4848322A (en) * 1988-01-19 1989-07-18 Dash Georgia P Endoscopy shield
US4944311A (en) * 1988-03-09 1990-07-31 Jodel Medical Products, Inc. Surgical instrument retainer
US5036866A (en) * 1988-03-09 1991-08-06 Devon Industries, Inc. Surgical instrument retainer
US5005590A (en) * 1989-02-17 1991-04-09 Jodel Medical Products, Inc. Surgical instrument tray
US5195538A (en) * 1989-02-17 1993-03-23 Devon Industries, Inc. Surgical instrument tray
US4945897A (en) * 1989-05-22 1990-08-07 Automated Medical Products Corp. Surgical retractor
US5065739A (en) * 1989-08-24 1991-11-19 Forrest William J Retractor support assembly
US5109831A (en) * 1989-08-24 1992-05-05 Forrest William J Retractor support assembly
US5159921A (en) * 1990-11-27 1992-11-03 Hoover Rocklin L Surgical retractor
US5123907A (en) * 1991-06-17 1992-06-23 Romaine Richard A Appliance for use in excising skin from stretched skin, and method
US8752553B2 (en) 1993-09-06 2014-06-17 Atropos Limited Apparatus for use in surgery and a valve
US20040215063A1 (en) * 1993-09-06 2004-10-28 Atropos Ltd. Apparatus for use in surgery and a valve
US6093145A (en) * 1997-02-10 2000-07-25 Aesculap Ag & Co. Kg Brain spatula
US6626865B1 (en) * 1998-10-23 2003-09-30 P Prisell Ab Method and a device for marking surfaces
US9757110B2 (en) 1998-12-01 2017-09-12 Atropos Limited Instrument access device
US6623426B2 (en) 1998-12-01 2003-09-23 Atropos Limited Laparoscopic sealed access device
US7998068B2 (en) 1998-12-01 2011-08-16 Atropos Limited Instrument access device
US20040097793A1 (en) * 1998-12-01 2004-05-20 John Butler Device
US7537564B2 (en) 1998-12-01 2009-05-26 Atropos Limited Wound retractor device
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