CN110477974B

CN110477974B - Wound opening device

Info

Publication number: CN110477974B
Application number: CN201910647262.XA
Authority: CN
Inventors: 游攀; 毛彤春; 李翔; 王韶亮; 周鑫; 张一鸣
Original assignee: Second Affiliated Hospital Army Medical University
Current assignee: Second Affiliated Hospital Army Medical University
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-07-03
Anticipated expiration: 2039-07-17
Also published as: CN110477974A

Abstract

The invention discloses a wound opening device which comprises a supporting mechanism, a suspension mechanism and an opening assembly. The supporting mechanism comprises a base, an outer barrel and a supporting rod, the base is arranged on the floor, the outer barrel is vertically and upwards fixed on the base, the supporting rod is a cylinder, the supporting rod is inserted into the outer barrel, and the supporting rod can slide up and down in the outer barrel; the suspension mechanism is arranged on the support mechanism and can horizontally rotate relative to the support mechanism, the suspension mechanism comprises a sleeve and a support rod, an annular groove is formed in the support rod, the sleeve can be rotatably sleeved on the support rod and is positioned in the annular groove, the support rod is transversely arranged on the side wall of the sleeve, and the support rod can rotate around the axial direction of the support rod; the strutting assembly is arranged at the end part of the hanging mechanism, can horizontally move and bend downwards, adopts the bionic finger to pull open through the wound strutting device, can prop open any angle of the wound, is convenient for deep operation, and can also effectively prevent the secondary damage of the wound in the dragging process.

Description

Wound opening device

Technical Field

The invention relates to the field of medical equipment, in particular to a wound opening device.

Background

At present, when an operation is performed on a patient clinically in an orthopedic surgery, in order to facilitate the operation or facilitate the visual field, a wound needs to be propped open to a certain extent. However, the existing operation generally pulls the wound with the forceps, and the operation method has the following defects: in the mode, not only is an assistant required to be added for pulling, but also the forceps need to clamp the edge of the wound for pulling, the clamping force is not easy to master in the clamping process, and if the clamping force is too large, the secondary injury of the wound is easy to cause; if the clamping force is too low, it is not easy to clamp and pull the wound edges.

Disclosure of Invention

In order to solve the problems, the invention provides a wound opening device, which can be used by medical workers to open a wound at any angle, is convenient for deep operation, and can effectively prevent the wound from being damaged for the second time in the pulling process.

In order to achieve the purpose, the invention is realized by the following technical scheme: a wound opening device comprising:

the supporting mechanism comprises a base, an outer barrel and a supporting rod, the base is arranged on a floor, the outer barrel is vertically and upwards fixed on the base, the supporting rod is a cylinder, the supporting rod is inserted into the outer barrel, and the supporting rod can slide up and down in the outer barrel;

the suspension mechanism is arranged on the supporting mechanism and can horizontally rotate relative to the supporting mechanism, the suspension mechanism comprises a sleeve and a supporting rod, an annular groove is formed in the supporting rod, the sleeve can be rotatably sleeved on the supporting rod and is positioned in the annular groove, the supporting rod is transversely arranged on the side wall of the sleeve, and the supporting rod can rotate around the axial direction of the supporting rod; and

the opening component is arranged at the end part of the suspension mechanism and can horizontally move and bend downwards, so that the wound is pulled and opened.

Furthermore, a plurality of jacks are arranged on the outer barrel at intervals along the height direction of the outer barrel and are communicated with the inner cavity of the outer barrel, a mounting hole is transversely formed in the side wall of the supporting rod, an insertion tongue and a first elastic piece are arranged in the mounting hole, one end of the first elastic piece is connected to the bottom of the mounting hole, the other end of the first elastic piece is connected to the insertion tongue, and when the supporting rod slides, the insertion tongue can be inserted into any one of the jacks.

Furthermore, the supporting rod is positioned in the sleeve, a plurality of grooves are formed in the sleeve at intervals along the axis of the supporting rod, a protrusion is arranged on the sleeve, and the protrusion can be clamped in any one of the grooves.

Further, telescopic lateral wall is provided with the side pipe, the branch pipe is transversely inserted and is established in the side pipe, the inner wall of side pipe is provided with the even slot in a plurality of intervals along circumference, branch is hollow pole, it is perpendicular in the branch the axis of branch is provided with the second elastic component, be provided with the horizontal pole on the second elastic component, just horizontal pole one end is located in the branch, other one end is passed branch is located in the side pipe, the both ends of horizontal groove are provided with stopper and handle respectively, just the stopper is located in the side pipe and can insert and establish in the slot, the handle is located and keeps away from branch one end is passed the lateral wall of branch expose in branch, the second elastic component is located under the handle.

Furthermore, the strutting assembly comprises a suspension beam, a connecting cylinder and two groups of distractors, the suspension beam is arranged on the supporting rod and is positioned at the end part of the supporting rod far away from the sleeve, the suspension beam is U-shaped, the two groups of distractors are arranged at two ends of the suspension beam oppositely, the connecting cylinder is arranged between the two groups of distractors and communicates the two groups of distractors, and an air pipe is arranged on the connecting cylinder.

Further, the spreader comprises a supporting cylinder, a branch pipe, a first pipe, a second pipe, a third pipe, a piston, a first connecting rod, a second connecting rod and a third connecting rod, wherein the supporting cylinder is L-shaped, one end of the supporting cylinder is an open end, the other end of the supporting cylinder is a closed end, the open end is sleeved on the connecting cylinder, the branch pipe is transversely arranged on the supporting cylinder and is communicated with the supporting cylinder and is parallel to the connecting cylinder, the other end of the branch pipe is hinged with the first pipe, the second pipe and the third pipe which are sequentially hinged, the piston is arranged in the branch pipe, the piston is provided with a piston rod, one end of the first connecting rod is hinged on the piston rod, the other end of the first connecting rod is hinged on the upper wall of the first pipe and close to the branch pipe, one end of the second connecting rod is hinged on the lower wall of the second pipe and close to the first pipe, the other end of the second connecting rod is hinged on the lower wall of the branch pipe and close to the first pipe, one end of the third connecting rod is hinged on the upper wall of the third pipe and close to the second pipe, and the other end of the third connecting rod is hinged on the lower wall of the second pipe and close to the third pipe.

Furthermore, a guide hole is formed in the suspension beam, a key pin is arranged on the side wall of the guide hole, a key groove is axially formed in the supporting cylinder, one end of the supporting cylinder is inserted into the guide hole, and the key pin is inserted into the key groove.

Further, both ends of a connecting cylinder are provided with threads, the screwing directions of the threads are opposite, and the support cylinder is connected to both ends of the connecting cylinder through the threads.

Further, the branch pipes of the third pipe are gradually reduced in the direction away from the second pipe.

The wound opening device at least comprises the following advantages:

the wound opening device comprises a supporting mechanism, a hanging mechanism and an opening assembly. The support mechanism is used for supporting the suspension mechanism and the distraction assembly. The supporting rod can slide up and down in the outer cylinder, so that the hanging mechanism and the strutting assembly can be adjusted to the required height. The sleeve can the pivoted cover establish the bracing piece, branch can round the axial of branch is rotated, rotates branch and sleeve, is favorable to promptly will strutting the subassembly and accurately aims at the wound, still is favorable to carrying on strutting and dragging of the wound of arbitrary angle. And adjusting the opening component to enable the opening component to horizontally move and bend downwards so as to pull and open the wound. By using the device, the wound can be opened to the required size without additionally adding assistant for auxiliary operation, and meanwhile, the device is simple to operate and convenient to use.

Drawings

Fig. 1 is an overall schematic view of the wound opening device according to the present embodiment;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

fig. 4 is a sectional view of the distractor in this embodiment;

FIG. 5 is a cross-sectional view of the strut inserted at the side tube;

reference numerals: 10-wound opening device, 100-supporting mechanism, 110-base, 120-outer cylinder, 121-jack, 130-supporting rod, 131-mounting hole, 132-tongue, 133-first elastic member, 134-groove, 200-suspension mechanism, 210-sleeve, 211-protrusion, 212-side tube, 213-groove, 220-supporting rod, 221-second elastic member, 222-cross rod, 223-limiting block, 224-handle, 300-opening component, 310-suspension beam, 320-connecting cylinder, 330-opener, 331-supporting cylinder, 332-branch tube, 333-first tube, 334-second tube, 335-third tube, 336-piston, 337-first rod, 338-second rod, 339-third rod, 340-air pipe, 3311-key groove.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 and 4, a wound distracting device 10 includes a support mechanism 100, a suspension mechanism 200, and a distracting assembly 300. Specifically, the supporting mechanism 100 includes a base 110, an outer cylinder 120, and a supporting rod 130. The base 110 is placed on the floor. The outer tub 120 is fixed vertically upward on the base 110. The support rod 130 is a cylinder, the support rod 130 is inserted into the outer cylinder 120, and the support rod 130 can slide up and down in the outer cylinder 120. The suspension mechanism 200 is provided on the support mechanism 100 and can horizontally rotate with respect to the support mechanism 100. The suspension mechanism 200 includes a sleeve 210 and a strut 220. The supporting rod 130 is provided with an annular groove, and the sleeve 210 can be rotatably sleeved on the supporting rod 130 and is positioned in the annular groove. The rod 220 is transversely disposed on the sidewall of the sleeve 210, and the rod 220 can rotate about the axial direction of the rod 220. A spreader assembly 300 is provided at the end of the suspension mechanism 200, the spreader assembly 300 being capable of horizontal movement and downward bending to pull and spread the wound. During the use, earlier remove this wound distraction device 10 to the place that needs, adjustment supporting mechanism 100 will strut subassembly 300 and adjust to the height that needs, then level and perpendicular rotation suspension mechanism 200 will strut subassembly 300 and aim at the wound, transfer and strut subassembly 300, make and strut subassembly 300 can horizontal migration and downwarping to can carry out arbitrary angle with the wound and pull and strut.

Referring to fig. 1 and 2, a plurality of insertion holes 121 are formed in the outer cylinder 120 at intervals along the height direction of the outer cylinder 120, and the insertion holes 121 communicate with the inner cavity of the outer cylinder 120. The side wall of the support bar 130 is transversely provided with a mounting hole 131. The insertion tongue 132 and the first elastic member 133 are provided in the mounting hole 131. The first elastic member 133 has one end connected to the bottom of the mounting hole 131 and the other end connected to the insertion tongue 132. When the support rod 130 is slid, the insertion tongue 132 can be inserted into any one of the insertion holes 121. When the height of the supporting mechanism 100 needs to be adjusted, the inserting tongue 132 is pressed perpendicular to the outer cylinder 120 to insert and remove the inserting hole 121, after the supporting rod 130 is pulled to a required position along the axial direction, the inserting tongue 132 is inserted into the inserting hole 121 again under the action of the first elastic member 133, and then the position of the supporting rod 130 can be fixed. In the present embodiment, the first elastic member 133 may preferably be a spring.

In the present embodiment, the support rod 130 is provided with a plurality of grooves 134 spaced along the axis of the support rod 130 within the sleeve 210. The groove 134 prevents the sleeve 210 from sliding along the axis of the support rod 130. The sleeve 210 is provided with a protrusion 211, and the protrusion 211 can be clamped in any one of the grooves 134. When the angle is required to be rotated, the sleeve 210 can be rotated to the required angle by pulling the supporting rod 220 horizontally. The protrusion 211 and the groove 134, which are engaged with each other, prevent the shaft 220 from rotating arbitrarily. The edge of the protrusion 211 is provided with a circular arc, and the circular arc is excessive so as to prevent the protrusion 211 from being stuck in the groove 134.

Referring to fig. 5, the side wall of the sleeve 210 is provided with a side tube 212, and the supporting rod 220 is transversely inserted into the side tube 212. The inner wall of the side tube 212 is provided with a plurality of grooves 213 at uniform intervals along the circumferential direction. The supporting rod 220 is a hollow rod, and a second elastic member 221 is arranged in the supporting rod 220 and perpendicular to the axis of the supporting rod 220. The second elastic member 221 is provided with a cross bar 222, and one end of the cross bar 222 is located in the supporting rod 220, and the other end of the cross bar 222 passes through the supporting rod 220 and is located in the side tube 212. Two ends of the cross bar 222 are respectively provided with a limiting block 223 and a handle 224, the limiting block 223 is located in the side tube 212 and can be inserted into the groove 213, and the handle 224 is located at one end far away from the supporting rod 220 and passes through the side wall of the supporting rod 220 to be exposed out of the supporting rod 220. The second elastic member 221 is located directly below the handle 224. When the wound is pulled at a desired longitudinal or oblique angle, the palm is placed on the handle 224 and the rod 220 is held, the handle 224 is pressed downwards, after the stopper 223 falls off the groove 213, the rod 220 is rotated to a desired angle around the axial direction thereof, then the handle 224 is released, the stopper 223 is reinserted into the groove 213 under the action of the second elastic member 221, the angle of the rod 220 and the spreader assembly 300 can be positioned, and the longitudinal or oblique angle of the wound can be pulled.

Referring specifically to fig. 2 and 4, distractor assembly 300 includes suspension beams 310, connecting cylinders 320, and two sets of distractors 330. The suspension beams 310 are provided on the strut 220 at the end of the strut 220 remote from the sleeve 210. The suspension beams 310 are U-shaped, and two sets of spreaders 330 are disposed at two opposite ends of the suspension beams 310. The connector barrel 320 is disposed between the two sets of distractors 330 and communicates the two sets of distractors 330. An air pipe 340 is provided on the connecting cylinder 320. The distractor 330 includes a supporting cylinder 331, a branch pipe 332, a first pipe 333, a second pipe 334, a third pipe 335, a piston 336, a first connecting rod 337, a second connecting rod 338, and a third connecting rod 339. The supporting cylinder 331 is L-shaped, one end of the supporting cylinder 331 is an open end, and the other end is a closed end. The open end is sleeved on the connecting cylinder 320. The branch pipe 332 is transversely disposed on the support cylinder 331, communicates with the support cylinder 331, and is parallel to the connection cylinder 320. The other end of the branch pipe 332 is hinged with a first pipe 333, a second pipe 334 and a third pipe 335 which are hinged in sequence. A piston 336 is disposed within the branch 332, and the piston 336 is provided with a piston 336 stem. A first connecting rod 337 is hinged at one end to the rod of the piston 336 and the other end of the first connecting rod 337 is hinged to the upper wall of the first tube 333 and adjacent to the strut 220. The second link 338 is hinged at one end to the lower wall of the second tube 334 and adjacent to the first tube 333. The second link 338 is hinged at the other end to the lower wall of the branch pipe 332 and adjacent to the first pipe 333. A third link 339 is hinged at one end to the upper wall of the third tube 335 near the second tube 334. The third link 339 is hinged at one end thereof to the lower wall of the second tube 334 and adjacent to the third tube 335.

Before being inflated, the distractor 330 is in a flat state (shown in phantom in fig. 4) as if it were a finger. When in use, the air pipe 340 is connected with an external air pump, and the air pump can inflate and inhale air. The air inlet switch of the air pump is started, the air flow sequentially passes through the air pipe 340 and the connecting cylinder 320, then continuously and respectively flows into the two branch pipes 332 through the supporting cylinders 331 on the two sides, the air flow pushes the pistons 336 in the branch pipes 332 to move forwards, and under the action of the rods of the pistons 336, the first connecting rod 337, the second connecting rod 338 and the third connecting rod 339, the first pipe 333, the second pipe 334 and the third pipe 335 are sequentially bent, and finally, a hook shape like a finger is formed after bending. During the downward bending of the two third tubes 335 away from each other, the wound in the closed state can be distracted and pulled for subsequent treatment or surgery. In this embodiment, the branch 332 of the third pipe 335 is gradually reduced in a direction away from the second pipe 334. The tapered configuration facilitates insertion of the end of the third tube 335 as the third tube 335 is inserted into the wound from the aperture of the wound. When the operation is completed, the air pump is actuated to exhaust the air in the branch tube 332, the first tube 333, the second tube 334 and the third tube 335 are expanded again by the piston 336, the first connecting rod 337, the second connecting rod 338 and the third connecting rod 339, and the wound edge is separated from the third tube 33, so that the wound can be restored to the original position.

In the present embodiment, the suspension beam 310 is provided with a guide hole. The side wall of the guide hole is provided with a key pin, and the supporting cylinder 331 is provided with a key slot 3311 along the axial direction. One end of the supporting cylinder 331 is inserted into the guide hole, and the key pin is inserted into the key slot 3311. The suspension beams 310 serve to support the stay 331. The combination of the key pin and the key slot 3311 prevents the cylinder 331 from rotating arbitrarily during use. When the third tube 335 is inserted into the wound and bent, the two sets of opposite distractors 330 can be pulled back to each other, so that the opening of the wound can be further opened to enlarge the field of view.

To facilitate adjustment of the distance between the two sets of distractors 330. The supporting cylinder 331 and the connecting cylinder 320 are connected through reliable tight fit. In this embodiment, a threaded seal connection is preferred. Both ends of the connecting cylinder 320 are provided with threads, the screwing directions of the threads are opposite, and the support cylinders 331 are connected to both ends of the connecting cylinder 320 through the threads. By rotating the connecting cylinder 320, the two groups of the distractors 330 can move towards or away from each other, thereby further adjusting the size of the opening of the wound.

The specific application method of the wound opening device 10 is as follows: when not in use, distractor 330 is in a linear position. When the wound opening device 10 is used, the wound opening device 10 is moved to a required position, the first elastic member 133 is pressed, the opening assembly 300 is adjusted to a required height, then the supporting rod 220 is horizontally pushed forcibly, the sleeve 210 can be rotated to a required angle, then the handle 224 is pressed, and the supporting rod 220 is rotated until the end of the third rod 339 is aligned with the wound. Then, the air tube 340 is connected to an external air pump, and an air inlet switch of the air pump is activated. After the air flow passes through the air pipe 340 and the connecting cylinder 320 in sequence, the air flow continuously and respectively flows into the two branch pipes 332 through the supporting cylinders 331 on the two sides, the air flow pushes the pistons 336 in the branch pipes 332 to advance, the first pipe 333, the second pipe 334 and the third pipe 335 are sequentially bent under the action of the rods of the pistons 336, the first connecting rod 337, the second connecting rod 338 and the third connecting rod 339, finally, the hook shape like the bent finger is formed, and the wound in the closed state can be opened and pulled in the process of reversely bending the two third pipes 335. When the width of the wound to be pulled open needs to be further adjusted, the connecting cylinder 320 is rotated to move the two groups of spreaders 330 towards or away from each other, so as to further adjust the size of the opening of the wound. When the operation is completed, the air pump is actuated to exhaust the air in the branch tube 332, the first tube 333, the second tube 334 and the third tube 335 are expanded again by the piston 336, the first connecting rod 337, the second connecting rod 338 and the third connecting rod 339, and the wound edge is separated from the third tube 33, so that the wound can be restored to the original position.

The wound distracting device 10 includes a support mechanism 100, a suspension mechanism 200, and a distracting assembly 300. The support mechanism 100 is used to support the suspension mechanism 200 and the spreader assembly 300. The height of the supporting mechanism 100 is adjustable, the horizontal angle of the hanging mechanism 200 is adjustable and rotatable, and the axial angle of the supporting rod 220 can be rotated, so that the propping assembly 300 can be favorably and accurately aligned with a wound, and propping and pulling of the wound with any angle are favorably carried out. The distraction assembly 300 employs the bionic principles of fingers. Distractor assembly 300 includes suspension beams 310, connecting cylinders 320, and two sets of distractors 330. The air pipe 340 is connected with an external air pump, the air pump is started to supply air, the air flow sequentially passes through the air pipe 340 and the connecting cylinder 320 and then continuously flows into the two branch pipes 332 respectively through the supporting cylinders 331 on the two sides, the air flow pushes the pistons 336 in the branch pipes 332 to advance, the first pipe 333, the second pipe 334 and the third pipe 335 are sequentially bent under the action of the rods of the pistons 336, the first connecting rod 337, the second connecting rod 338 and the third connecting rod 339, finally, the hook shape formed after the fingers are bent is formed, and the air supply is stopped when the third pipe 335 reaches a required position and then is in a state. During the opposite downward bending of the two third tubes 335, the wound can be opened and pulled in the closed state, and the suspension beams 310 are used to support the stay 331. The key pin and keyway 3311 combination may be placed on the support cylinder 331 for optional rotation during use. The supporting cylinder 331 and the connecting cylinder 320 are connected through reliable tight fit. By rotating the connecting cylinder 320, the two groups of the distractors 330 can move towards or away from each other, thereby further adjusting the size of the opening of the wound.

Finally, it should be noted that: while there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A wound opening device, comprising:

the opening component is arranged at the end part of the suspension mechanism and can horizontally move and bend downwards so as to pull and open the wound;

the support component comprises a suspension beam, a connecting cylinder and two groups of spreaders, the suspension beam is arranged on the support rod and is positioned at the end part of the support rod far away from the sleeve, the suspension beam is U-shaped, the two groups of spreaders are oppositely arranged at the two ends of the suspension beam, the connecting cylinder is arranged between the two groups of spreaders and is used for communicating the two groups of spreaders, and an air pipe is arranged on the connecting cylinder;

the spreader comprises a supporting cylinder, a branch pipe, a first pipe, a second pipe, a third pipe, a piston, a first connecting rod, a second connecting rod and a third connecting rod, wherein the supporting cylinder is L-shaped, one end of the supporting cylinder is an open end, the other end of the supporting cylinder is a closed end, the open end is sleeved on the connecting cylinder, the branch pipe is transversely arranged on the supporting cylinder and is communicated with the supporting cylinder and is parallel to the connecting cylinder, the other end of the branch pipe is hinged with the first pipe, the second pipe and the third pipe which are sequentially hinged, the piston is arranged in the branch pipe, a piston rod is arranged on the piston, one end of the first connecting rod is hinged on the piston rod, the other end of the first connecting rod is hinged on the upper wall of the first pipe and close to the branch pipe, one end of the second connecting rod is hinged on the lower wall of the second pipe and close to the first pipe, the other end of the second connecting rod is hinged on the lower wall of the branch pipe and close to the first pipe, one end of the third connecting rod is hinged on the upper wall of the third pipe and close to the second pipe, and the other end of the third connecting rod is hinged on the lower wall of the second pipe and close to the third pipe.

2. The wound spreading device of claim 1, wherein a plurality of insertion holes are formed in the outer cylinder at intervals along the height direction of the outer cylinder, the insertion holes are communicated with an inner cavity of the outer cylinder, a mounting hole is transversely formed in a side wall of the support rod, an insertion tongue and a first elastic member are arranged in the mounting hole, one end of the first elastic member is connected to the bottom of the mounting hole, the other end of the first elastic member is connected to the insertion tongue, and when the support rod slides, the insertion tongue can be inserted into any one of the insertion holes.

3. The wound opening device of claim 1, wherein the support rod is positioned in the sleeve and provided with a plurality of grooves at intervals along the axis of the support rod, and the sleeve is provided with a protrusion which can be clamped in any one of the grooves.

4. The wound spreader of claim 1, wherein the side wall of the sleeve is provided with a side tube, the supporting rod is transversely inserted into the side tube, the inner wall of the side tube is circumferentially provided with a plurality of uniformly spaced grooves, the supporting rod is a hollow rod, a second elastic member is arranged in the supporting rod and perpendicular to the axis of the supporting rod, a cross rod is arranged on the second elastic member, one end of the cross rod is positioned in the supporting rod, the other end of the cross rod penetrates through the supporting rod and is positioned in the side tube, two ends of the cross rod are respectively provided with a limiting block and a handle, the limiting block is positioned in the side tube and can be inserted into the grooves, the handle is positioned far away from one end of the supporting rod and penetrates through the side wall of the supporting rod to be exposed out of the supporting rod, and the second elastic member is positioned under the handle.

5. The wound opening device of claim 1, wherein the suspension beam is provided with a guide hole, a side wall of the guide hole is provided with a key pin, the supporting cylinder is provided with a key groove along the axial direction, one end of the supporting cylinder is inserted into the guide hole, and the key pin is inserted into the key groove.

6. The wound opening device of claim 1, wherein threads are provided on both ends of the connecting cylinder, and the threads are of opposite hand, and the opening cylinders are connected to both ends of the connecting cylinder by the threads.

7. The wound spreading device of claim 1, wherein the branches of the third tube taper away from the second tube.