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WO2018042159A2 - Surgical retraction apparatus - Google Patents

Surgical retraction apparatus Download PDF

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Publication number
WO2018042159A2
WO2018042159A2 PCT/GB2017/052443 GB2017052443W WO2018042159A2 WO 2018042159 A2 WO2018042159 A2 WO 2018042159A2 GB 2017052443 W GB2017052443 W GB 2017052443W WO 2018042159 A2 WO2018042159 A2 WO 2018042159A2
Authority
WO
WIPO (PCT)
Prior art keywords
stay
perforations
perforation
annulus
spaced
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.)
Ceased
Application number
PCT/GB2017/052443
Other languages
French (fr)
Other versions
WO2018042159A3 (en
Inventor
Timothy Bailey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAILEY INSTRUMENTS Ltd
Original Assignee
BAILEY INSTRUMENTS Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BAILEY INSTRUMENTS Ltd filed Critical BAILEY INSTRUMENTS Ltd
Publication of WO2018042159A2 publication Critical patent/WO2018042159A2/en
Publication of WO2018042159A3 publication Critical patent/WO2018042159A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
    • A61B17/0293—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors with ring member to support retractor elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00831—Material properties
    • A61B2017/00946—Material properties malleable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/02—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors
    • A61B2017/0287—Surgical instruments, devices or methods for holding wounds open, e.g. retractors; Tractors with elastic retracting members connectable to a frame, e.g. hooked elastic wires

Definitions

  • This invention relates to surgical retraction apparatus.
  • Surgical retraction apparatus is used for opening and maintaining open an incision to allow access for surgical procedures.
  • Such apparatus may comprise an anchor plate adapted to be located around an incision site to which may be anchored stays comprising hooks placed at the edges of the incision and connected to the anchor plate, by which the edges may be drawn back towards the anchor ring and there retained.
  • the anchor plate must hold its shape under the forces in the stays, and is generally of rigid construction.
  • anchor plates In order to accommodate different incision sites, for example in the thorax, abdomen, spine, and limb, anchor plates of many different shapes and sizes must be provided.
  • the present invention provides a surgical retraction apparatus that can be realised in fewer different shapes and sizes to meet the requirements of different incision sites.
  • the invention comprises a surgical retraction apparatus comprising an anchor plate comprising a perforated annulus having a width substantially greater than its thickness and of such material that it is inelastically deformable away from a flat configuration to conform to the contours of an incision site.
  • a flexible frame such as disclosed in US2845925 is secured on its face by a suitable adhesive, so whilst it is flexible, it is not malleable, in the sense of being inelastically deformable.
  • the present invention provides a surgical retraction apparatus that does not require an adhesive for securing the apparatus. While deformation may take place elastically, which might involve some measure of retention of the elastically deformed plate, as by stays affixed to drapes or other local structure, inelastic deformation, which may be effected prior to or during application to the incision site, avoids the need for such retention.
  • the material may be steel, which may be 304 stainless, annealed, non-magnetic austenitic steel.
  • the width to thickness ratio may be between 15:1 and 40:1, for example 20:1.
  • the width may for example be 10mm and the thickness 0.5mm.
  • the annulus may be a rounded rectangle, and may be a rounded square.
  • a rounded rectangle may for example have an internal major axis of 180mm and an internal minor axis of 130mm.
  • a rounded square may have internal axes of 140mm.
  • the annulus may have perforations around it, which may be spaced apart by between 10 and 30mm, for example, 20mm.
  • the perforations, serving as attachments for the stays may be 2.5mm across.
  • Corner lugs may be provided, which may have like perforations, which may serve as attachments for stays anchored to drapes.
  • anchor plates according to the invention may be used with conventional stays
  • the invention also provides a stay particularly adapted for use with the anchor plates comprising a flexible tie adapted to be drawn through a perforation in the plate having lengthwise- spaced detents retaining the needle against withdrawal.
  • the detents may be spaced at 10mm intervals.
  • the tie may be of a silicone material.
  • the stay may be tapered at one end for ease of threading through a perforation and will have an incision-engaging hook at the other end.
  • the tie may be elastically extensible, and contract in cross-section under tension. It may then be relatively easy to pull through an anchor plate perforation while under tension through the hook being engaged in the incision, but, once through, and tension relaxed, the untensioned cross-section will be larger than that of the perforation and will not be pulled back through the perforation.
  • the anchor plate is placed around an incision and deformed to conform to the contours around the incision site, then the stays are hooked into the incision and threaded through perforations in the anchor plate, and pulled through until the incision is opened as far as the surgeon requires.
  • Figure 1 is a plan view of a first embodiment of anchor plate
  • Figure 2 is a plan view of a second embodiment of anchor plate, in use
  • Figure 3 is a view of a stay used with the anchor plates of Figures 1 and 2; and Figure 4 is a diagrammatic view of an anchor plate conformed to the contours of an incision site.
  • the drawings illustrate a surgical retraction apparatus comprising an anchor plate 11 comprising an annulus having a width substantially greater than its thickness and of such material that it is deformable away from a flat configuration to conform to the contours of an incision site.
  • the material is 304 stainless, annealed, non-magnetic austenitic steel.
  • the width to thickness ratio is 20:1, the width being 10mm and the thickness 0.5mm. Other ratios, widths and thicknesses will be satisfactory
  • the annulus of Figure 1 is a rounded rectangle, and that of Figure 2 a rounded square.
  • a rounded rectangle has an internal major axis A of 180mm and an internal minor axis B of 130mm.
  • a rounded square has internal axes ⁇ of 140mm. Because of the malleability of the austenitic steel, these two sizes will be found to cover many surgical procedures.
  • the annulus has perforations 12 around it, which are spaced apart by 20mm.
  • the perforations, serving as attachments for the stays, are 2.5mm across.
  • FIG. 1 The annulus of Figure 1 has corner lugs 13, which have like perforations 12, which can serve as attachments for stays anchored to drapes.
  • Figure 2 illustrates the anchor plate 11 in use at an incision site IS with the incision retracted and held by stays 14.
  • FIG. 3 illustrates a stay 14 particularly adapted for use with the anchor plates 11, comprising a flexible tie 15 adapted to be drawn through a perforation 12 in the plate 11 having lengthwise-spaced detents 16 retaining the tie 15 against withdrawal.
  • the detents 16 are spaced at 10mm intervals.
  • the tie 15 is of a silicone material, and is tapered at one end 15a for ease of threading through a perforation 12, and has an incision-engaging hook 17 at the other end.
  • the tie 15 is elastically extensible, and contracts in cross-section under tension. It is then relatively easy to pull through an anchor plate perforation 12 while under tension through the hook being engaged in the incision, but, once through, and tension relaxed, the untensioned cross-section will be larger than that of the perforation 12 and will not be pulled back through the perforation.
  • the anchor plate 11 is placed around an incision site IS and deformed to conform to the contours around the incision site.
  • Figure 4 then the stays 14 are hooked into the incision and threaded through perforations 12 in the anchor plate 11, and pulled through until the incision is opened as far as the surgeon requires.
  • the ties 15 may be doubled back when pulled through and threaded through a spare perforation 12 to confirm retention and help keep the operating site tidy.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

A surgical retraction apparatus comprising an anchor plate comprising a perforated annulus having a width substantially greater than its thickness and of such material that it is inelastically deformable away from a flat configuration to conform to the contours of an incision site, and a stay adapted for use with the anchor plate comprising a flexible tie adapted to be drawn through a perforation in the plate having lengthwise-spaced detents retaining the needle against withdrawal.

Description

Surgical Retraction Apparatus
This invention relates to surgical retraction apparatus.
Surgical retraction apparatus is used for opening and maintaining open an incision to allow access for surgical procedures. Such apparatus may comprise an anchor plate adapted to be located around an incision site to which may be anchored stays comprising hooks placed at the edges of the incision and connected to the anchor plate, by which the edges may be drawn back towards the anchor ring and there retained.
The anchor plate must hold its shape under the forces in the stays, and is generally of rigid construction. In order to accommodate different incision sites, for example in the thorax, abdomen, spine, and limb, anchor plates of many different shapes and sizes must be provided.
The present invention provides a surgical retraction apparatus that can be realised in fewer different shapes and sizes to meet the requirements of different incision sites.
The invention comprises a surgical retraction apparatus comprising an anchor plate comprising a perforated annulus having a width substantially greater than its thickness and of such material that it is inelastically deformable away from a flat configuration to conform to the contours of an incision site.
A flexible frame such as disclosed in US2845925 is secured on its face by a suitable adhesive, so whilst it is flexible, it is not malleable, in the sense of being inelastically deformable. The present invention provides a surgical retraction apparatus that does not require an adhesive for securing the apparatus. While deformation may take place elastically, which might involve some measure of retention of the elastically deformed plate, as by stays affixed to drapes or other local structure, inelastic deformation, which may be effected prior to or during application to the incision site, avoids the need for such retention.
The material may be steel, which may be 304 stainless, annealed, non-magnetic austenitic steel.
The width to thickness ratio may be between 15:1 and 40:1, for example 20:1. The width may for example be 10mm and the thickness 0.5mm.
The annulus may be a rounded rectangle, and may be a rounded square. A rounded rectangle may for example have an internal major axis of 180mm and an internal minor axis of 130mm. A rounded square may have internal axes of 140mm.
The annulus may have perforations around it, which may be spaced apart by between 10 and 30mm, for example, 20mm. The perforations, serving as attachments for the stays may be 2.5mm across. Corner lugs may be provided, which may have like perforations, which may serve as attachments for stays anchored to drapes.
While anchor plates according to the invention may be used with conventional stays, the invention also provides a stay particularly adapted for use with the anchor plates comprising a flexible tie adapted to be drawn through a perforation in the plate having lengthwise- spaced detents retaining the needle against withdrawal. The detents may be spaced at 10mm intervals. The tie may be of a silicone material. The stay may be tapered at one end for ease of threading through a perforation and will have an incision-engaging hook at the other end.
The tie may be elastically extensible, and contract in cross-section under tension. It may then be relatively easy to pull through an anchor plate perforation while under tension through the hook being engaged in the incision, but, once through, and tension relaxed, the untensioned cross-section will be larger than that of the perforation and will not be pulled back through the perforation.
In use, the anchor plate is placed around an incision and deformed to conform to the contours around the incision site, then the stays are hooked into the incision and threaded through perforations in the anchor plate, and pulled through until the incision is opened as far as the surgeon requires.
Embodiments of surgical retraction apparatus according to the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is a plan view of a first embodiment of anchor plate;
Figure 2 is a plan view of a second embodiment of anchor plate, in use;
Figure 3 is a view of a stay used with the anchor plates of Figures 1 and 2; and Figure 4 is a diagrammatic view of an anchor plate conformed to the contours of an incision site.
The drawings illustrate a surgical retraction apparatus comprising an anchor plate 11 comprising an annulus having a width substantially greater than its thickness and of such material that it is deformable away from a flat configuration to conform to the contours of an incision site.
The material is 304 stainless, annealed, non-magnetic austenitic steel.
The width to thickness ratio is 20:1, the width being 10mm and the thickness 0.5mm. Other ratios, widths and thicknesses will be satisfactory
The annulus of Figure 1 is a rounded rectangle, and that of Figure 2 a rounded square. A rounded rectangle has an internal major axis A of 180mm and an internal minor axis B of 130mm. A rounded square has internal axes \ of 140mm. Because of the malleability of the austenitic steel, these two sizes will be found to cover many surgical procedures.
The annulus has perforations 12 around it, which are spaced apart by 20mm. The perforations, serving as attachments for the stays, are 2.5mm across.
The annulus of Figure 1 has corner lugs 13, which have like perforations 12, which can serve as attachments for stays anchored to drapes. Figure 2 illustrates the anchor plate 11 in use at an incision site IS with the incision retracted and held by stays 14.
While anchor plates 11 may be used with conventional stays, Figure 3 illustrates a stay 14 particularly adapted for use with the anchor plates 11, comprising a flexible tie 15 adapted to be drawn through a perforation 12 in the plate 11 having lengthwise-spaced detents 16 retaining the tie 15 against withdrawal. The detents 16 are spaced at 10mm intervals. The tie 15 is of a silicone material, and is tapered at one end 15a for ease of threading through a perforation 12, and has an incision-engaging hook 17 at the other end.
The tie 15 is elastically extensible, and contracts in cross-section under tension. It is then relatively easy to pull through an anchor plate perforation 12 while under tension through the hook being engaged in the incision, but, once through, and tension relaxed, the untensioned cross-section will be larger than that of the perforation 12 and will not be pulled back through the perforation.
In use, as illustrated in Figure 3, the anchor plate 11 is placed around an incision site IS and deformed to conform to the contours around the incision site. Figure 4, then the stays 14 are hooked into the incision and threaded through perforations 12 in the anchor plate 11, and pulled through until the incision is opened as far as the surgeon requires. The ties 15 may be doubled back when pulled through and threaded through a spare perforation 12 to confirm retention and help keep the operating site tidy.

Claims

Claims:
1 A surgical retraction apparatus comprising an anchor plate comprising a perforated annulus having a width substantially greater than its thickness and of such material that it is inelastically deformable away from a flat configuration to conform to the contours of an incision site.
2 Apparatus according to claim 1, in which the material is steel.
3 Apparatus according to claim 2, in which the steel is 304 stainless, annealed, nonmagnetic austenitic steel.
4 Apparatus according to any one of claims 1 to 3, in which the width to thickness ratio is between 15:1 and 40:1
5 Apparatus according to claim 4, in which the width to thickness ratio is 20:1.
6 Apparatus according to claim 5, in which the width is be 10mm and the thickness 0.5mm.
7 Apparatus according to any one of claims 1 to 6, in which the annulus is a rounded rectangle.
8 Apparatus according to claim 7, in which the rounded rectangle has an internal major axis of 180mm and an internal minor axis of 130mm.
9 Apparatus according to claim 7, in which the annulus is a rounded square.
10 Apparatus according to claim 9, in which the rounded square has internal axes of 140mm.
11 Apparatus according to any one of claims 1 to 10, in which the annulus has perforations around it.
12 Apparatus according to claim 11, in which the perforations are spaced apart by between 10 and 30mm.
13 Apparatus according to claim 12, in which the perforations are spaced apart by 10mm.
14 Apparatus according to any one of claims 11 to 13, in which the perforations are between 2mm and 3mm across.
15 Apparatus according to claim 14, in which the perforations are 2.5mm across.
16 Apparatus according to any one of claims 1 to 15, in which the annulus has corner lugs having like perforations.
17 Apparatus according to any one of claims 1 to 16, comprising a stay adapted for use with the anchor plate comprising a flexible tie adapted to be drawn through the perforation in the plate having lengthwise-spaced detents retaining the stay against withdrawal.
18 Apparatus according to claim 17, in which the detents are spaced at 10mm intervals. 19 Apparatus according to claim 18, in which the tie is of a silicone material.
20 Apparatus according to any one of claims 17 to 19, the stay being tapered at one end for ease of threading through a perforation and having an incision-engaging hook at the other end.
21 A stay for use with an anchor in a surgical retraction system in which the anchor plate has perforations through which the stay is threaded, the stay comprising an elastically extensible tie which contracts in cross-section under tension so as to be capable of being readily drawn through a perforation of the anchor when under tension on the side of the perforation remote from the side from which it is pulled, but which cannot readily be pulled back through the perforation when not under tension.
22 A stay according to claim 21, having lengthwise-spaced detents retaining the stay against withdrawal.
23 A stay according to claim 22, in which the detents are spaced at 10mm intervals.
24 A stay according to any one of claims 21 to 23, in which the tie is of a silicone material.
PCT/GB2017/052443 2016-08-31 2017-08-17 Surgical retraction apparatus Ceased WO2018042159A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1614761.3A GB2553313A (en) 2016-08-31 2016-08-31 Surgical retraction apparatus
GB1614761.3 2016-08-31

Publications (2)

Publication Number Publication Date
WO2018042159A2 true WO2018042159A2 (en) 2018-03-08
WO2018042159A3 WO2018042159A3 (en) 2018-04-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2017/052443 Ceased WO2018042159A2 (en) 2016-08-31 2017-08-17 Surgical retraction apparatus

Country Status (2)

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GB (1) GB2553313A (en)
WO (1) WO2018042159A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11819202B2 (en) 2020-10-23 2023-11-21 Biophyx Surgical, Inc. Systems and methods including an adjustable retractor frame
US12016544B2 (en) 2020-10-23 2024-06-25 Biophyx Surgical, Inc. Systems and methods including an adjustable retractor frame

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845925A (en) * 1953-11-24 1958-08-05 Jayle Gaetan Jean Automatic eyelids eyeball fixing device for a surgical intervention
US4274398A (en) * 1979-05-14 1981-06-23 Scott Jr Frank B Surgical retractor utilizing elastic tubes frictionally held in spaced notches
US5964697A (en) * 1996-04-22 1999-10-12 Lone Star Medical Products, Inc. Surgical retractor stay apparatus
US6190312B1 (en) * 1999-03-04 2001-02-20 Lone Star Medical Products, Inc. Variable geometry retractor and disposable retractor stay clips and method of use
US5951467A (en) * 1999-03-23 1999-09-14 Applied Medical Technology, Inc. Reconfigurable and self-retaining surgical retractor
US6090043A (en) * 1999-05-17 2000-07-18 Applied Medical Technology, Inc. Tissue retractor retention band
US6464634B1 (en) * 2000-09-27 2002-10-15 Depuy Acromed, Inc. Surgical retractor system
US20070238933A1 (en) * 2006-04-11 2007-10-11 Lone Star Medical Products, Inc. Posterior approach retractor ring and attachments system
US9011325B2 (en) * 2011-11-30 2015-04-21 Abeon Medical Corporation Tissue retractor stay

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11819202B2 (en) 2020-10-23 2023-11-21 Biophyx Surgical, Inc. Systems and methods including an adjustable retractor frame
US12016544B2 (en) 2020-10-23 2024-06-25 Biophyx Surgical, Inc. Systems and methods including an adjustable retractor frame
US12102314B2 (en) 2020-10-23 2024-10-01 Biophyx Surgical, Inc. Systems and methods including an adjustable retractor frame

Also Published As

Publication number Publication date
WO2018042159A3 (en) 2018-04-26
GB2553313A (en) 2018-03-07
GB201614761D0 (en) 2016-10-12

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