US 8,734,336 B2Grant
Wound retractor device
Issue Date:2014-05-27
•11 Claims
•15 Drawing Sheets
Abstract
A wound retractor device comprises a distal member for insertion into a wound opening, a proximal member for location externally of the wound opening, a connecting member extending at least between the distal member and the proximal member. At least part of the connecting member is movable relative to the proximal member to shorten the length of the connecting member located between the distal member and the proximal member and thereby retract laterally the sides of the wound opening. At least part of the connecting member is movable relative to the proximal member by a guide slot through which the connecting member changes its direction to substantially perpendicular to the longitudinal axis of the wound retractor device.
Metadata
Assignee
- Atropos Limited
Inventors
- Frank Bonadio
- Trevor Vaugh
- John Butler
Application Information
Application Number:US 12/428,823
Filing Date:2009-04-23
Priority Date:1998-12-01
Art Unit:3733
Classifications
IPC:
A61B1/32
Patent Drawings (15 sheets)
Description
[0001] This is a continuation of application Ser. No. 11/086,661, filed Mar. 23, 2005, now U.S. Pat. No. 7,537,564, which is a continuation-in-part of application Ser. No. 10/995,117, filed Nov. 24, 2004, now U.S. Pat. No. 7,300,399, which is a continuation of application Ser. No. 10/133,979, filed Apr. 29, 2002, now U.S. Pat. No. 6,846,287, which is a continuation of application Ser. No. 09/801,826, filed Mar. 9, 2001, now abandoned, which is a continuation of PCT International Application No. PCT/IE99/00122, filed Dec. 1, 1999. Application Ser. No. 11/086,661 claims the benefit of U.S. Provisional Application No. 60/555,398, filed on Mar. 23, 2004. The contents of all of the above-listed applications are incorporated herein by reference.
Introduction
[0002] This invention relates to a wound retractor device, and to a method of retracting a wound opening.
Statements of Invention
[0003] According to the invention there is provided a wound retractor device comprising:
-
- [0004] a distal member for insertion into a wound opening;
- [0005] a proximal member for location externally of the wound opening; and
- [0006] a connecting member extending at least between the distal member and the proximal member;
- [0007] at least part of the connecting member being movable relative to the proximal member to shorten the length of the connecting member located between the distal member and the proximal member and thereby retract laterally the sides of the wound opening.
[0008] In one embodiment of the invention the connecting member comprises at least one strap member. The connecting member may comprise two or more strap members. In one case a first strap member is separate from a second strap member. In another case a first strap member is attached to a second strap member.
[0009] The connecting member may comprise a sleeve member. The sleeve member may provide the means of attachment of the first strap member to the second strap member. In one case the first strap member extends from the sleeve member in a first direction, and the second strap member extends from the sleeve member in the first direction. The sum of the circumferential dimensions of the strap members may be substantially equal to the circumferential dimension of the sleeve member. The strap member may be attached to an end of the sleeve member. In one case the first strap member is attached to a first end of the sleeve member, and the second strap member is attached to the first end of the sleeve member.
[0010] In one case the connecting member is axially movable relative to the proximal member.
[0011] At least part of the connecting member may be movable relative to the proximal member in a lateral direction. In one case at least part of the connecting member is movable relative to the proximal member in a direction substantially perpendicular to a longitudinal axis of a wound opening. In another case at least part of the connecting member is movable relative to the proximal member in a direction substantially parallel to a longitudinal axis of a wound opening.
[0012] At least part of the connecting member may be slidably movable relative to the proximal member.
[0013] In one embodiment of the invention the device comprises a guide to guide movement of the connecting member relative to the proximal member. The guide may comprise a passageway through which the connecting member is extendable. The passageway may be provided by a slot in the proximal member. A longitudinal axis of the passageway may be substantially perpendicular to a longitudinal axis of a wound opening. A longitudinal axis of the passageway may be substantially parallel to a longitudinal axis of a wound opening.
[0014] In one case the connecting member is movable relative to the distal member. The device may comprise a guide to guide movement of the connecting member relative to the distal member. The guide may comprise a passageway through which the connecting member is extendable. In one case the passageway is provided by a slot in the distal member. A longitudinal axis of the passageway may be substantially perpendicular to a longitudinal axis of a wound opening. A longitudinal axis of the passageway may be substantially parallel to a longitudinal axis of a wound opening.
[0015] In one embodiment the connecting member extends between the distal member and the proximal member in a double layer. The connecting member may be looped around at least part of the distal member. In one case a first end of the connecting member is fixed relative to the proximal member. A second end of the connecting member may be movable relative to the proximal member. In one case the connecting member extends from the first end distally to the distal member in a first layer, and extends from the distal member proximally to the second end in a second layer, the second layer being radially outwardly of the first layer. In another case the connecting member extends from the first end distally to the distal member in a first layer, and extends from the distal member proximally to the second end in a second layer, the second layer being radially inwardly of the first layer.
[0016] In one case the device is configured to self-lock the connecting member in position relative to the proximal member.
[0017] In a further embodiment the connecting member is fixed relative to the distal member.
[0018] The connecting member may extend between the distal member and the proximal member in a single layer.
[0019] In one case at least part of the connecting member is grippable to move at least part of the connecting member relative to the proximal member. The grippable part of the connecting member may be configured to the located externally of a wound opening.
[0020] In a further embodiment the device comprises a lock to releasably lock the connecting member in position relative to the proximal member. The lock may comprise a male protrusion for co-operating engagement with a female recess.
[0021] In one case the proximal member comprises the male protrusion, and the connecting member comprises the female recess. The lock may comprise a plurality of female recesses.
[0022] In another case the lock comprises an engagement member releasably fixable to the connecting member to engage against the proximal member. The engagement member may comprise a clamp.
[0023] In another embodiment the device comprises a protector to protect a retracted wound opening. The protector may comprise a sleeve member to line a retracted wound opening. The sleeve member may be mounted to the distal member. In one case a first end of the sleeve member is fixed to the distal member and a second end of the sleeve member is configured for location externally of a wound opening.
[0024] The proximal member may comprise a ring. The distal member may comprise a ring. The ring may be substantially circular. The ring may be substantially square-shaped.
[0025] In one embodiment the connecting member comprises a plurality of strap members spaced around the circumference of the proximal member and/or the distal member.
[0026] In another aspect of the invention there is provided a method of retracting a wound opening, the method comprising the steps of:
-
- [0027] providing a wound retractor device comprising a distal member, a proximal member, and a connecting member extending at least between the distal member and the proximal member;
- [0028] inserting the distal member into the wound opening, and locating the proximal member externally of the wound opening; and
- [0029] moving at least part of the connecting member relative to the proximal member to shorten the length of the connecting member located between the distal member and the proximal member and thereby retract laterally the sides of the wound opening.
[0030] In one case at least part of the connecting member is moved relative to the proximal member in a lateral direction. At least part of the connecting member may be moved relative to the proximal member in a direction substantially perpendicular to a longitudinal axis of the wound opening.
[0031] In another case at least part of the connecting member is moved relative to the proximal member in a direction substantially parallel to a longitudinal axis of the wound opening. At least part of the connecting member may be slidably moved relative to the proximal member.
[0032] The method may comprise the steps of gripping at least part of the connecting member and exerting a force on the connecting member to move at least part of the connecting member relative to the proximal member. In one case the method comprises the step of releasing the connecting member after lateral retraction of the sides of the wound opening.
[0033] In one embodiment the method comprises the step of guiding movement of the connecting member relative to the proximal member.
[0034] In another case the method comprises the step of moving the connecting member relative to the distal member. The method may comprise the step of guiding movement of the connecting member relative the distal member.
[0035] In one case the connecting member is locked in position relative to the proximal member after lateral retraction of the sides of the wound opening. In one case the wound retractor device self-locks the connecting member in position relative to the proximal member.
[0036] In another case the method comprises the step of releasably locking the connecting member in position relative to the proximal member. The connecting member may be releasably locked in position relative to the proximal member by engaging a male protrusion with a female recess. The connecting member may be releasably locked in position relative to the proximal member by fixing an engagement member to the connecting member, and engaging the engagement member against the proximal member.
[0037] The method may comprise the step of protecting the retracted wound opening. The method may comprise the step of locating a protector between the connecting member and the sides of the wound opening. In one case step of locating the protector between the connecting member and the sides of the wound opening is performed after the distal member is inserted into the wound opening. In one case the protector is inserted into the wound opening with the distal member. The protector may be retrieved from within the wound opening to locate the protector between the connecting member and the sides of the wound opening.
Brief Description of the Drawings
[0038] The invention will be more clearly understood from the following description of some embodiments thereof, given by way of example only, with reference to the accompanying drawings, in which:
[0039] FIG. 1 is a perspective view of a wound retractor device according to the invention;
[0040] FIG. 2 is a cross-sectional, side view of the device of FIG. 1 ;
[0041] FIG. 3 is a cross-sectional, side view of the device of FIG. 1 , in use;
[0042] FIGS. 4 to 6 are views similar to FIGS. 1 to 3 of another wound retractor device according to the invention;
[0043] FIGS. 7 and 8 are views similar to FIGS. 2 and 3 of a further wound retractor device according to the invention;
[0044] FIGS. 9 and 10 are views similar to FIGS. 2 and 3 of another wound retractor device according to the invention;
[0045] FIGS. 11 and 12 are cross-sectional, side views of a further wound retractor device according to the invention, in use;
[0046] FIGS. 13 and 14 are views similar to FIGS. 2 and 3 of another wound retractor device according to the invention;
[0047] FIGS. 15 and 16 are views similar to FIGS. 2 and 3 of another wound retractor device according to the invention;
[0048] FIGS. 17 and 18 are views similar to FIGS. 2 and 3 of a further wound retractor device according to the invention;
[0049] FIG. 19 is a perspective view of another wound retractor device according to the invention;
[0050] FIGS. 20 and 21 are perspective views of another wound retractor device according to the invention, in use;
[0051] FIG. 21( a) is another perspective view of the device of FIG. 20 , in use; and
[0052] FIG. 22 is a perspective view of a further wound retractor device according to the invention.
Detailed Description
[0053] Referring to the drawings, and initially to FIGS. 1 to 3 thereof, there is illustrated a wound retractor device 1 according to the invention. The device 1 comprises a distal ring member 2 for insertion into a wound opening 3, a proximal ring member 4 for location externally of the wound opening 3, and a connecting member extending between the proximal ring member 4 and the distal ring member 2. In this case the connecting member is provided in the form of four separate strap members 5 which are axially movable relative to the distal ring member 2 and relative to the proximal ring member 4. As illustrated in FIG. 1 , the distal ring member 2 and the proximal ring member 4 are substantially circular.
[0054] The distal ring member 2 comprises four slots 6, with each strap member 5 positioned extending though a slot 6 (FIG. 1 ). Each strap member 5 is movable relative to the distal member 2 by sliding of the strap member 5 through the slot 6. The slots 6 thus act as passageways through which the strap members 5 may extend, and in this manner the slots 6 guide movement of the strap members 5 relative to the distal ring member 2. As illustrated in FIGS. 2 and 3 , the longitudinal axis of each slot 6 is substantially perpendicular to a longitudinal axis A-A of the wound opening 3.
[0055] The proximal ring member 4 also comprises four slots 7 with each strap member 5 positioned extending through a slot 7 (FIG. 1 ). Each strap member 5 is movable relative to the proximal member 4 by sliding of the strap member 5 through the slot 7. The slots 7 thus act as passageways through which the strap members 5 may extend, and in this manner the slots 7 guide movement of the strap members 5 relative to the proximal ring member 4. As illustrated in FIGS. 2 and 3 , the longitudinal axis of each slot 7 is substantially perpendicular to the longitudinal axis A-A of the wound opening 3.
[0056] A first end 8 of each strap member 5 is fixedly attached to the proximal ring member 4, with each strap member 5 extending between the distal ring member 2 and proximal ring member 4 in a double layer. In particular, each strap member 5 extends from the first end 8 fixed to the proximal ring member 4 distally towards the distal ring member 2 in a first layer 9. At the distal ring member 2, each strap member 5 is looped through the slot 6. Each strap member 5 then extends from the distal ring member 2 proximally to a second end 10 of the strap member 5 in a second layer 11. As illustrated in FIGS. 2 and 3 , the second layer 11 is located radially outwardly of the first layer 9, with the second layer 11 bearing against the sides of the wound opening 3 (FIG. 3 ).
[0057] The four strap members 5 are evenly spaced around the circumference of the distal ring member 2 and around the circumference of the proximal ring member 4. In this manner, an even retracting force is applied to the sides of the wound opening 3.
[0058] In use, the distal ring member 2 is inserted into the wound opening 3, and the proximal ring member 4 is located externally of the wound opening 3. The second end 10 of each strap member 5 is then gripped, and a pulling force is exerted on each second end 10 to pull each second end 10 laterally, radially outwardly parallel to the longitudinal axis of the slots 7 away from the proximal ring member 4, as illustrated in FIG. 3 . This pulling action causes each strap member 5 to be pulled axially through the slot 6 in the distal ring member 2 in a sliding manner and through the slot 7 in the proximal ring member 4 in a sliding manner, as indicated by the arrows in FIG. 3 .
[0059] As a result the length of each strap member 5 which is located between the distal ring member 2 and the proximal ring member 4 is shortened, and initially the distal ring member 2 is drawn upwardly towards the proximal ring member 4. When the distal ring member 4 reaches the inner surfaces of the peritoneum 12, further pulling of each strap member 5 will cause shortening of the length of each strap member 5 which is located between the distal ring member 2 and the proximal ring member 4 by retracting laterally the sides of the wound opening 3 (FIG. 3 ). After lateral retraction of the sides of the wound opening 3, the second end 10 of each strap member 5 may be released.
[0060] As the strap members 5 are pulled and the wound opening 3 is retracted, the slots 6 guide movement of the strap members 5 relative to the distal ring member 2, and the slots 7 guide movement of the strap members 5 relative to the proximal ring member 4. In this way, the slots 6, 7 provide the surgeon with enhanced control of the strap members 5.
[0061] The wound retractor device 1 is self-locking. Thus, when the pulling force is released, the strap members 5 remain locked in position with the wound opening 3 retracted (FIG. 3 ).
[0062] FIGS. 4 to 6 illustrate another wound retractor device 20 according to the invention, which is similar to the device 1 of FIGS. 1 to 3 , and similar elements in FIGS. 4 to 6 are assigned the same reference numerals.
[0063] In this case, the device 20 comprises a cylindrical film sleeve member 21 for lining the retracted wound opening 3 to protect the retracted wound opening 3. A first end 22 of the sleeve member 21 is mounted to the distal ring member 2 by fixedly attaching the first end 22 to the distal ring member 2. A ring 23 is provided at a second end 24 of the sleeve member 21.
[0064] In use, the distal ring member 2 and the sleeve member 21 are together inserted into the wound opening 3. The ring 23 is then gripped and pulled back out of the wound opening 3, and located externally of the wound opening 3 between the proximal ring member 4 and the peritoneum 12, as illustrated in FIG. 6 . In this manner, the sleeve member 21 is retrieved from within the wound opening 3 and located between the strap members 5 and the sides of the wound opening 3. Retraction of the wound opening 3 may then be performed as described previously with reference to FIGS. 1 to 3 . The sleeve member 21 thus acts to line the retracted wound opening 3 to protect the retracted wound opening 3, as illustrated in FIG. 6 .
[0065] It will be appreciated that the sleeve member 21 may alternatively be provided disconnected from the distal ring member 2.
[0066] In FIGS. 7 and 8 there is illustrated a further wound retractor device 25 according to the invention, which is similar to the device 1 of FIGS. 1 and 3 , and similar elements in FIGS. 7 and 8 are assigned the same reference numerals.
[0067] In this case, the longitudinal axis of each slot 6 and the longitudinal axis of each slot 7 are substantially parallel to the longitudinal axis A-A of the wound opening 3. To retract the wound opening 3, the strap members 5 are pulled upwards parallel to the longitudinal axis of the slots 7 away from the proximal ring member 4, as illustrated in FIG. 8 .
[0068] FIGS. 9 and 10 illustrate another wound retractor device 30 according to the invention, which is similar to the device 1 of FIGS. 1 to 3 , and similar elements in FIGS. 9 and 10 are assigned the same reference numerals.
[0069] In this case, the longitudinal axis of the each slot 7 subtends an acute angle, for example a 45° angle, with the longitudinal axis A-A of the wound opening 3. To retract the wound opening 3, the strap members 5 are pulled upwards parallel to the longitudinal axis of the slots 7 away from the proximal ring member 4, as illustrated in FIG. 10 .
[0070] It will be appreciated that the longitudinal axis of each slot 6 and/or the longitudinal axis of each slot 7 may be arranged at any suitable angle relative to the longitudinal axis A-A of the wound opening 3.
[0071] Referring to FIGS. 11 and 12 there is illustrated another wound retractor device 35 according to the invention, which is similar to the device 1 of FIGS. 1 to 3 , and similar elements in FIGS. 11 and 12 are assigned the same reference numerals.
[0072] In this case, there are no slots provided in the distal ring member 2. Instead each strap member 5 is looped around the entire distal ring member 2. In this manner the distal ring member 2 is associated with the strap members 5.
[0073] In FIGS. 13 and 14 , there is illustrated another wound retractor device 40 according to the invention, which is similar to the device 1 of FIGS. 1 to 3 , and similar elements in FIGS. 13 and 14 are assigned the same reference numerals.
[0074] In this case, the second layer 11 of each strap member 5 is located radially inwardly of the first layer 9, with the first layer 9 bearing against the sides of the wound opening 3 (FIG. 14 ). To retract the wound opening 3, the strap members 5 are pulled laterally radially inwardly parallel to the longitudinal axis of the slots 7 away from the proximal ring member 4, as illustrated in FIG. 14 .
[0075] In FIGS. 15 and 16 , there is illustrated a further wound retractor device 45 according to the invention.
[0076] In this case, there are no slots provided in the distal ring member 2, and the first end 8 of each strap member 5 is fixedly attached to the distal ring member 2. Each strap member 5 extends between the distal ring member 2 and the proximal ring member 4 in a single layer.
[0077] In addition, the wound retractor device 45 is not self-locking. Instead the device 45 comprises four clamps 46. Each clamp 46 is releasably fixable to a strap member 5 at a desired location along the strap member 5. When the wound opening 3 has been retracted, each clamp 46 is fixed to a strap member 5 at a location engaging against the proximal ring member 4 (FIG. 16 ). In this manner, the strap members 5 are releasably locked in position relative to the proximal ring member 4, and the wound opening 3 is thus releasably locked in the retracted configuration.
[0078] Referring to FIGS. 17 and 18 there is illustrated another wound retractor device 50 according to the invention, which is similar to the device 45 of FIGS. 15 and 16 , and similar elements in FIGS. 17 and 18 are assigned the same reference numerals.
[0079] In this case, the proximal ring member 4 comprises four male protrusions 51, and each strap member 5 comprises a plurality of female recess openings 52. Each male protrusion 51 is inserted into one of the openings 52 of a strap member 5 for co-operative engagement of the male protrusion 51 with the opening 52 (FIG. 18 ). In this manner, the strap members 5 are locked in position relative to the proximal ring member 4, and the wound opening 3 is thus locked in the retracted configuration.
[0080] FIG. 19 illustrates another wound retractor device 55 according to the invention, which is similar to the device 35 of FIGS. 11 and 12 , and similar elements in FIGS. 19 to 21 are assigned the same reference numerals.
[0081] In this case, the device 55 comprises two strap members 5, and no slots are provided in the proximal ring member 4.
[0082] It will be appreciated that any suitable number of one or more strap members 5 may be provided in the wound retractor device according to the invention to achieve the desired retraction of the wound opening 3.
[0083] In FIGS. 20 to 21( a) there is illustrated a further wound retractor device 155 according to the invention, which is similar to the device 55 of FIG. 19 , and similar elements in FIGS. 20 to 21( a) are assigned the same reference numerals.
[0084] In this case the connecting member, which extends between the proximal ring member 4 and the distal ring member 2, is provided in the form of a sleeve member 156 and two strap members 5. The two strap members 5 extend from an end of the sleeve member 156 in the same direction.
[0085] The first end 8 of the sleeve member 156 is fixedly attached to the proximal ring member 4, and extends distally towards the distal ring member 2 in the first layer 9. At the distal ring member 2, the sleeve member 156 is looped around the entire distal ring member 2. The two strap members 5 are attached to an end of the sleeve member 5, and extend from the end of the sleeve member 156 proximally to the second end 10 in the second layer 11.
[0086] As illustrated in FIG. 20 , the two strap members 5 are attached together, in this case with the sleeve member 156 providing the means of attachment.
[0087] The circumferential dimension of the sleeve member 156 is substantially equal to the sum of the circumferential dimension of the two strap members 5, as illustrated in FIG. 20 .
[0088] The wound retractor device 155 is self-locking to maintain the wound opening 3 laterally retracted.
[0089] To maintain the wound opening 3 in the retracted configuration the second 10 of each strap member 5 does not have to pass through a slot in the proximal ring member 4, or to be hooked onto the proximal ring member 4, or in any other way to be engaged against the proximal ring member 4. The wound retractor device 155 is self-locking, even when the second ends 10 of the strap members 5 do not engage against the proximal ring member 4.
[0090] After lateral retraction of the sides of the wound opening 3, the portion of the second layer 11 of each strap member 5 which is external of the wound opening 3 is redundant. This external portion of each strap member 5 does not contribute to maintaining the wound opening 3 retracted, and may therefore be removed if desired, for example by cutting this external portion.
[0091] The second ends 10 of the strap members 5 may be moved in a direction substantially parallel to the longitudinal axis A-A of the wound opening 3 to retract laterally the sides of the wound opening 3, as illustrated in FIGS. 20 and 21 .
[0092] Alternatively the second ends 10 of the strap members 5 may be moved in a lateral direction to retract laterally the sides of the wound opening 3, as illustrated in FIG. 21( a). In this case, the second ends 10 are moved in a direction substantially perpendicular to the longitudinal axis A-A of the wound opening 3.
[0093] Referring to FIG. 22 , there is illustrated a further wound retractor device 56 according to the invention, which is similar to the device 55 of FIG. 19 , and similar elements in FIG. 22 are assigned the same reference numerals.
[0094] In this case, the distal ring member 2 and the proximal ring member 4 are substantially square-shaped. The square shape acts to prevent bunching of, in particular, the distal ring member 2.
[0095] It will be appreciated that the distal ring member 2 and/or the proximal ring member 4 may be provided in a variety of different shapes.
[0096] It will further be appreciated that hinging means may be provided on the distal ring member 2 to facilitate temporary collapsing of the distal ring member 2 to a lower-profile configuration for ease of insertion into the wound opening 3.
[0097] The invention is not limited to the embodiments hereinbefore described, with reference to the accompanying drawings, which may be varied in construction and detail.
Claims
Certificate of Correction present
The claims shown below may not include correction changes. Use the corrected PDF for authoritative text.
The invention claimed is:
1. A wound retractor device, comprising:
a distal member for insertion into a wound opening;
a proximal member for location externally of the wound opening;
a connecting member extending at least between the distal member and the proximal member, at least part of the connecting member being movable relative to the proximal member to shorten the length of the connecting member located between the distal member and the proximal member for retracting laterally sides of the wound opening;
a guide slot radially extending substantially normal to a longitudinal axis of the proximal member to guide movement of the connecting member relative to the proximal member, through which at least part of the connecting member changes its direction to substantially perpendicular to a longitudinal axis of the wound retractor device and outward substantially normal to the longitudinal axis of the proximal member; and
a protector separated from the connecting member, wherein the protector is configured to protect the retracted wound opening, being located radially outside the connecting member, and wherein the protector includes a distal member engaging end at the distal member, and an end opposite the distal member engaging end terminating distal of the slot and being configured to extend along a distal end of the proximal member.
2. A device as claimed in claim 1 wherein the connecting member is movable relative to the distal member.
3. A device as claimed in claim 2 wherein the device comprises a guide to guide movement of the connecting member relative to the distal member.
4. A device as claimed in claim 1 wherein the protector comprises a sleeve member configured to line a retracted wound opening.
5. A device as claimed in claim 4 wherein a first end of the sleeve member is fixed to the distal member and a second end of the sleeve member is configured for location externally of a wound opening.
6. A device as claimed in claim 1, wherein the connecting member engages the distal member.
7. A device as claimed in claim 6, wherein the protector includes a circumferential edge at the distal member engaging end, and every portion of the circumferential edge directly contacts the distal member.
8. A wound retractor device, comprising:
a distal member configured for insertion into a wound opening;
a proximal member configured for location externally of the wound opening, the proximal member having a radially innermost surface and a radially outermost surface;
a connecting member extending at least between the distal member and the proximal member, at least part of the connecting member being movable relative to the proximal member to shorten a length of the connecting member between the distal member and the proximal member;
a guide slot radially extending through the proximal member from the radially innermost surface to the radially outermost surface, and substantially normal to a longitudinal axis of the proximal member to guide movement of the connecting member relative to the proximal member, through which at least part of the connecting member changes its direction to substantially normal to the longitudinal axis of the proximal member and radially outward relative to the longitudinal axis of the proximal member; and
a protector separated from the connecting member, wherein the protector is configured to protect the retracted wound opening by being positioned radially outside the connecting member.
9. A device as claimed in claim 8, wherein the connecting member includes a retracting portion configured to exert a retracting force laterally against sides of the wound opening.
10. A device as claimed in claim 8, wherein the connecting member directly engages the distal member.
11. A device as claimed in claim 10, wherein the protector includes an edge, and the entire edge directly engages the distal member.
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