Wound surface closing device
The design of the wound closure device enables precise adjustment of the wound closure force and scar inhibition, solving the problems of cumbersome operation and scar hyperplasia in existing technologies, and improving the wound healing effect and aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-29
- Publication Date
- 2026-03-10
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
Figure CN121622151A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of medical devices, in particular to a wound closure device. BACKGROUND
[0002] In the field of medical care, wound closure is a key link to ensure the quality of wound healing and reduce the probability of scar proliferation, and is widely used in postoperative surgery, trauma treatment and home care scenes.
[0003] The current wound closure method commonly used in clinical and home care presents diversified characteristics, including suture, suture-free tension reduction and the like. Among them, suture, as a classic closure method, can achieve firm fixation of the wound, and is suitable for deep and long wounds, but it needs to be operated by professional medical personnel with special instruments, which not only has a complicated operation process, but also causes invasive secondary damage to the healthy skin around the wound, and is easy to cause pain when removed after operation, and often leaves obvious needle marks or nail hole scars after healing, which is difficult to meet the closure needs of high aesthetic requirements of superficial wounds, face and other parts.
[0004] And suture-free tension reduction becomes a common choice for superficial wound care because of its simple operation, non-invasive and low cost, but it has a significant performance shortcoming. The tension reduction needs to rely on the manual pulling of the operating personnel to adjust the wound closure force, and this adjustment method completely depends on personal experience and judgment, lacks quantitative standards and precise control means, and the size of the force is difficult to stabilize and control, and it is easy to appear the situation that the wound is squeezed and the surrounding skin tissue is damaged due to excessive pulling force, which may even affect the blood circulation of the wound. Once the improper force problem occurs, it can only be re-operated, which not only increases the workload and nursing time of the nursing staff, but also causes secondary stimulation to the fragile wound and delays the healing process.
[0005] Therefore, we propose a wound closure device to solve the problems mentioned in the above background. SUMMARY
[0006] 1. Technical problems to be solved by the application: The purpose of the present application is to provide a wound closure device to solve the problems in the above background.
[0007] 2. Technical solutions: In order to achieve the above purpose, the present application provides the following technical solutions: a wound closure device, comprising first and second adhesive plates distributed in parallel left and right, a scar removal module and a plurality of closure modules are installed between the first and second adhesive plates; The scar removal module comprises a plurality of support ribbons, and a silicone scar removal sheet is fixed between the plurality of support ribbons; The closing module comprises a base fixed on the first adhesive plate and a fixing seat fixed on the second adhesive plate, a clamping strip is fixed on the right side of the base, the middle part of the clamping strip is arranged in the interior of the fixing seat, the clamping strip is located above the silicone scar-removing sheet, a tension member is installed in the interior of the fixing seat, the tension member is used for pulling the clamping strip to displace, a knob member is also installed on the fixing seat, a movable member is installed between the knob member and the tension member, and the knob member drives the tension member to stepwise rotate through the movable member.
[0008] Further, the lower ends of the first adhesive plate, the second adhesive plate and the silicone scar-removing sheet are attached with release paper, the length of the support rib is greater than the shortest distance between the first adhesive plate and the second adhesive plate, and the support rib is made of a medical material with elasticity and plasticity, and the material is selected from any one of a nickel-titanium shape memory alloy wire or a high-elastic polyurethane.
[0009] Through the above technical solution, under the action of the support rib, the silicone scar-removing sheet can be erected above the un-closed wound surface, and after the wound surface is closed, the silicone scar-removing sheet can be pressed and attached to the wound area to inhibit scar proliferation.
[0010] Further, the first adhesive plate and the second adhesive plate each comprise a flexible base material layer, a medical pressure-sensitive adhesive layer arranged on the lower surface of the flexible base material layer, and a silicone functional layer arranged in the adhesive layer. The flexible base material layer is made of a medical non-woven fabric, an elastic non-woven fabric, a polyurethane film or a silicone composite film. The medical pressure-sensitive adhesive layer is a latex-free acrylate pressure-sensitive adhesive. The silicone functional layer contains polydimethylsiloxane and is used for inhibiting scar proliferation.
[0011] Through the above technical solution, the flexible base material layer can provide structural support and skin adhesion under the action of the flexible base material layer, the medical pressure-sensitive adhesive layer ensures that the device is stably attached to the skin, and the new tissue is not damaged when it is torn off, and the silicone functional layer and the silicone scar-removing sheet form a double scar-inhibiting mechanism to improve the postoperative scar management effect.
[0012] Further, the upper and lower ends of the clamping strip are provided with guide grooves, the guide grooves are used for sliding cooperation with the inner wall of the fixing seat, and the front and rear sides of the clamping strip are fixed with racks, and the racks are arranged in the length direction of the clamping strip.
[0013] Through the above technical solution, the clamping strip can be stably slid in the fixing seat.
[0014] Further, the tension member comprises a main gear, a slave gear and a gear set connecting the two. The main gear and the slave gear are respectively rotatably installed inside the fixed seat, and the lower part of the main gear and the lower part of the slave gear are respectively engaged with the racks on the front and back sides of the clamping strip. The gear set is composed of two intermeshing guide gears, one of which is engaged with the upper part of the main gear, and the other of which is engaged with the upper part of the slave gear.
[0015] Through the above technical solution, after the main gear and the slave gear are synchronously and reversely rotated, the clamping strip can be uniformly stressed and moved.
[0016] Further, the clamping strip, the main gear, the slave gear and the gear set are integrally formed by injection molding using polyformaldehyde, polycarbonate or medical-grade nylon material.
[0017] Through the above technical solution, high-precision engagement, low-friction transmission, long-term durability and biological safety can be achieved.
[0018] Further, the knob member includes a rotating shaft rotatably installed inside the fixed seat. A recess is formed in the upper end of the fixed seat, and the upper end of the rotating shaft extends into the recess. The side wall of the recess is connected with a positioning groove. A disc is fixedly sleeved on the outside of the rotating shaft in the recess, and an elastic positioning member is installed on the upper end of the disc.
[0019] Through the above technical solution, the rotating shaft, the disc and the elastic positioning member can be synchronously rotated.
[0020] Further, the elastic positioning member includes a vertical part, an inclined strut part, a rebound part and a positioning part. The vertical part is fixed to the upper end of the disc. The inclined strut part is connected to the upper end of the vertical part and is fixed to the disc, forming a triangular support structure. The rebound part is connected to the lower end of the vertical part, and the upper end of the rebound part is connected to the positioning part. The positioning part is in concave-convex cooperation with the positioning groove, and is used to limit and prevent rotation after the elastic positioning member is rotated into position.
[0021] Through the above technical solution, after the positioning part is clamped into the positioning groove, the rotation of the elastic positioning member can be limited.
[0022] Further, the elastic positioning member is made of an integrally formed medical elastic polymer material, and the material is selected from any one of polyformaldehyde, polyamide, thermoplastic polyurethane or polyether ether ketone.
[0023] Through the above technical solution, while having sufficient elastic recovery force and structural strength, the biological compatibility, fatigue resistance and precise molding requirements of medical devices are met.
[0024] Further, the moving part comprises a rotating disc fixedly sleeved outside the rotating shaft and a driven disc fixedly sleeved outside the end of the main gear shaft; The lower end of the rotating disc is fixedly installed with a limiting block and a pushing rod; The outer periphery of the driven disc is staggered with limiting grooves and pushing grooves; When the rotating disc rotates with the rotating shaft, the pushing rod is sequentially embedded into the pushing grooves and pushes the driven disc to rotate, and then the limiting block is embedded into the limiting grooves to limit the reverse rotation of the driven disc, so that the step-by-step rotation of the main gear is realized.
[0025] Through the above technical scheme, the rotating disc can intermittently and quantitatively drive the driven disc to rotate.
[0026] 3. Beneficial effects: Compared with the prior art, the wound closure device provided by the technical scheme has the following advantages: the wound closure force can be adjusted in steps after the positioning member is unlocked, the skin is not damaged, the device is automatically locked and stabilized after rebounding, the silicone scar-removing patch is attached after being closed, the silicone component strengthens the scar-removing effect, and the safety is good. The specific content is as follows: (1) First, press the elastic positioning member to make the positioning part out of the positioning groove, then rotate the positioning member to drive the disc and the rotating shaft to rotate, the rotating disc rotates synchronously, when the pushing rod is embedded into the pushing groove in the outer periphery of the driven disc, the driven disc is pushed to rotate, thereby driving the main gear to rotate synchronously, the main gear is connected with the driven gear through the gear set, since the main gear and the driven gear are respectively engaged with the racks on the front and rear sides of the clamping strip, when the two gears rotate reversely, horizontal tension is generated on the clamping strip, the clamping strip slides along the guide groove in the inner wall of the fixed seat, the wound closure force is adjusted in steps, the skin is not damaged due to fast closure or excessive force in the traditional direct pulling mode, then the rebounding part drives the positioning part to be clamped into the positioning groove under the elastic action, and the locking is realized; (2) When in use, the first and second adhesive boards are respectively attached to the skin on both sides of the wound, the medical pressure-sensitive adhesive layer on the lower surface of the boards makes the device stable and fixed, at this time, the silicone scar-removing patch is located above the wound, but has not been attached yet, when the wound is closed, the silicone scar-removing patch is attached to the wound area, the contained polydimethylsiloxane component can inhibit the growth of scars, the medical pressure-sensitive adhesive layer of the first and second adhesive boards is made of non-lactopropylene acrylate material, which is suitable for sensitive skin and reduces the risk of allergy, and the optional silicone functional layer in the adhesive layer can further strengthen the scar-removing effect. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the overall front view structure of the present application; Figure 3 It is a schematic view of the card strip structure of the present application; Figure 4 It is a schematic view of the internal structure of the fixing seat of the present application; Figure 5 It is a schematic view of the knob structure of the present application; Figure 6 It is a schematic view of the elastic positioning member structure of the present application; Figure 7 It is a schematic view of the elastic positioning member structure of the present application.
[0028] In the figure: 1, first adhesive board; 2, second adhesive board; 3, base; 4, fixing seat; 5, support rib; 6, silicone scar removal sheet; 7, release paper; 8, card strip; 81, guide groove; 82, rack; 9, tension member; 91, main gear; 92, gear set; 93, from gear; 10, knob; 101, groove; 102, rotating shaft; 103, disc; 104, elastic positioning member; 1041, vertical part; 1042, inclined strut part; 1043, rebound part; 1044, positioning part; 105, positioning groove; 11, movable member; 111, rotating disc; 112, limit block; 113, push rod; 114, driven disc; 115, limit groove; 116, push groove. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application. EMBODIMENT
[0030] Please refer to Figures 1-7This invention provides a technical solution: a wound closure device, comprising a first adhesive plate 1 and a second adhesive plate 2 arranged parallel to each other, a scar removal module and several closure modules installed between the first adhesive plate 1 and the second adhesive plate 2; the scar removal module includes several supporting ribs 5, and silicone scar removal sheets 6 are fixed between the supporting ribs 5; release paper 7 is attached to the lower ends of the first adhesive plate 1, the second adhesive plate 2 and the silicone scar removal sheets 6, and the length of the supporting ribs 5 is greater than the shortest distance between the first adhesive plate 1 and the second adhesive plate 2, and the supporting ribs 5 are composed of... Made of a medical material with elasticity and malleability, the material is selected from either nickel-titanium shape memory alloy wire or high-elasticity polyurethane; both the first adhesive plate 1 and the second adhesive plate 2 include a flexible substrate layer, a medical pressure-sensitive adhesive layer disposed on the lower surface of the flexible substrate layer, and a silicone functional layer optionally disposed in the adhesive layer; the flexible substrate layer is made of medical non-woven fabric, elastic non-woven fabric, polyurethane film, or silicone composite film; the medical pressure-sensitive adhesive layer is a latex-free acrylic pressure-sensitive adhesive; the silicone functional layer contains polydimethylsiloxane for inhibiting scar hyperplasia; Before using the device, release paper 7 is attached to the lower ends of the first adhesive plate 1, the second adhesive plate 2, and the silicone scar removal sheet 6. First, remove the release paper 7, and then attach the first adhesive plate 1 and the second adhesive plate 2 to the healthy skin surface on both sides of the wound. The supporting ribs 5 provide slight support to the silicone scar removal sheet 6, which is not yet under pressure. After the wound is closed, apply pressure to press the silicone scar removal sheet 6 onto the wound area. The polydimethylsiloxane component it contains can inhibit scar hyperplasia. At the same time, the medical pressure-sensitive adhesive layer of the first and second adhesive plates is made of latex-free acrylic ester material, which is suitable for sensitive skin and reduces the risk of allergies. In addition, the optional silicone functional layer in the adhesive layer can further enhance the scar removal effect. The closing module comprises a base 3 fixed on the first adhesive plate 1 and a fixing seat 4 fixed on the second adhesive plate 2, the right side of the base 3 is fixed with a clamping strip 8, the middle part of the clamping strip 8 is arranged in the interior of the fixing seat 4, and the clamping strip 8 is located above the silicone scar removal sheet 6, a tension member 9 is installed in the interior of the fixing seat 4, the tension member 9 is used for pulling the clamping strip 8 to displace, a knob member 10 is further installed on the fixing seat 4, an activity member 11 is installed between the knob member 10 and the tension member 9, the knob member 10 drives the tension member 9 to stepwise rotate through the activity member 11; the upper and lower ends of the clamping strip 8 are both provided with a guide groove 81, the guide groove 81 is used for slidingly matching the inner wall of the fixing seat 4, and the front and rear sides of the clamping strip 8 are both fixed with a rack 82, the rack 82 is arranged in the length direction of the clamping strip 8; the tension member 9 comprises a main gear 91, a slave gear 93 and a gear set 92 connected between the main gear 91 and the slave gear 93; the main gear 91 and the slave gear 93 are respectively rotatably installed in the interior of the fixing seat 4, the lower part of the main gear 91 and the lower part of the slave gear 93 are respectively engaged with the racks 82 on the front and rear sides of the clamping strip 8; the gear set 92 is composed of two mutually engaged guide gears, one of the guide gears is engaged with the upper part of the main gear 91, and the other guide gear is engaged with the upper part of the slave gear 93; the clamping strip 8, the main gear 91, the slave gear 93 and the gear set 92 are integrally formed by injection molding of polyformaldehyde, polycarbonate or medical-grade nylon material; the knob member 10 comprises a rotating shaft 102 rotatably installed in the interior of the fixing seat 4; a recess 101 is arranged at the upper end of the fixing seat 4, the upper end of the rotating shaft 102 extends into the recess 101; the side wall of the recess 101 is communicated with a positioning groove 105; a disc 103 is fixedly sleeved outside the rotating shaft 102 in the recess 101, and an elastic positioning member 104 is installed at the upper end of the disc 103; the elastic positioning member 104 comprises a vertical part 1041, an inclined support part 1042, a rebound part 1043 and a positioning part 1044; the vertical part 1041 is fixed at the upper end of the disc 103; one end of the inclined support part 1042 is connected to the upper end of the vertical part 1041, and the other end is fixed to the disc 103, forming a triangular support structure; the rebound part 1043 is connected to the lower end of the vertical part 1041, and the upper end thereof is connected to the positioning part 1044; the positioning part 1044 is in concave-convex matching with the positioning groove 105, and is used for limiting and preventing rotation after the elastic positioning member 104 is rotated to the position; the elastic positioning member 104 is made of an integrally formed medical elastic polymer material, and the material is selected from any one of polyformaldehyde, polyamide, thermoplastic polyurethane or polyether ether ketone; the activity member 11 comprises a rotating disc 111 fixedly sleeved outside the rotating shaft 102 and a driven disc 114 fixedly sleeved outside the shaft end of the main gear 91; a limiting block 112 and a pushing rod 113 are fixedly installed at the lower end of the rotating disc 111; a limiting groove 115 and a pushing groove 116 are alternately arranged on the outer periphery of the driven disc 114; when the rotating disc 111 rotates with the rotating shaft 102, the pushing rod 113 is sequentially embedded in the pushing groove 116 and drives the driven disc 114 to rotate, and then the limiting block 112 is embedded in the limiting groove 115 to limit the rotation of the driven disc 114, so as to realize the stepwise rotation of the main gear 91; When the first and second adhesive boards 1 and 2 are respectively attached to the healthy skin surfaces on both sides of the wound surface, the elastic positioning member 104 is first pressed to make the positioning part 1044 disengage from the positioning groove 105, then the elastic positioning member 104 is rotated to drive the disc 103 and the shaft 102 to rotate, the rotating disc 111 is synchronously rotated, when the lever 113 is embedded in the driving groove 116 on the outer periphery of the driven disc 114, the driven disc 114 is driven to rotate, thereby synchronously rotating the main gear 91, the main gear 91 is linked with the driven gear 93 through the gear set 92, since the main gear 91 and the driven gear 93 are respectively engaged with the two racks 82 on the front and back sides of the clamping strip 8, when the two gears are reversely rotated, horizontal tension is generated on the clamping strip 8, thereby driving the clamping strip 8 to slide along the guide groove 81 on the inner wall of the fixed seat 4, realizing the stepwise adjustment of the closing force of the wound surface, avoiding the skin damage caused by the traditional direct pulling method due to the too fast or too large closing force, then the rebound part 1043 drives the positioning part 1044 to be clamped into the positioning groove 105 under the elastic action, realizing the locking.
[0031] Working principle: when using the wound closing device, as shown in Figures 1-7 Before use, the first and second adhesive boards 1 and 2 and the lower end of the silicone scar-removing sheet 6 are attached with release paper 7. After tearing off the release paper 7, the two adhesive boards are respectively attached to the healthy skin on both sides of the wound surface, at this time the support rib 5 slightly supports the silicone scar-removing sheet 6, which has not been attached to the wound surface. When closing, the elastic positioning member 104 is first pressed to make the positioning part 1044 disengage from the positioning groove 105, the knob member 10 is rotated to drive the shaft 102, the disc 103 and the rotating disc 111 to rotate, the lever 113 is embedded in the driving groove 116 of the driven disc 114, the main gear 91 is driven to rotate, and the driven gear 93 is linked through the gear set 92, the two gears are synchronously and reversely rotated, engaged with the two racks 82 on the sides of the clamping strip 8, horizontal tension is generated, the clamping strip 8 is smoothly slid along the guide groove 81, realizing the stepwise and controllable adjustment of the closing force of the wound surface, avoiding the skin damage caused by the traditional pulling method. After loosening, the rebound part 1043 drives the positioning part 1044 to be reset and clamped into the positioning groove 105, completing the locking. Then the silicone scar-removing sheet 6 is pressed to be attached to the wound surface, the polydimethylsiloxane component cooperates with the optional silicone functional layer in the adhesive layer to effectively inhibit the scar proliferation, and the latex acrylate adhesive layer is suitable for sensitive skin, reducing the risk of allergy.
[0032] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.
[0033] In the description of the application, unless otherwise specified and limited, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.
[0034] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "connected" and "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0035] Although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the protection scope of the application.
Claims
1. A wound closure device, characterized by: The application relates to a scar-removing device, which comprises first and second parallelly distributed adhesive plates (1 and 2), a scar-removing module and a plurality of closing modules arranged between the first and second adhesive plates (1 and 2). The scar-removing module comprises a plurality of supporting ribs (5), and a silicone scar-removing sheet (6) is fixed between the supporting ribs (5). The closing module comprises a base (3) fixed to the first adhesive plate (1) and a fixing base (4) fixed to the second adhesive plate (2), a clamping strip (8) is fixed to the right side of the base (3), the middle part of the clamping strip (8) is arranged in the fixing base (4), the clamping strip (8) is arranged above the silicone scar-removing sheet (6), a pulling member (9) is arranged in the fixing base (4) and used for pulling the clamping strip (8) to displace, a rotating member (10) is further arranged on the fixing base (4), a movable member (11) is arranged between the rotating member (10) and the pulling member (9), and the rotating member (10) drives the pulling member (9) to stepwise rotate through the movable member (11).
2. A wound closure device according to claim 1, wherein: Lower ends of the first and second adhesive plates (1 and 2) and the silicone scar-removing sheet (6) are attached with release paper (7), the length of the supporting rib (5) is greater than the shortest distance between the first and second adhesive plates (1 and 2), the supporting rib (5) is made of medical material with elasticity and plasticity, and the material is selected from any one of a nickel-titanium shape memory alloy wire and high-elastic polyurethane.
3. The wound closure device of claim 1, wherein: The first and second adhesive plates (1 and 2) each comprise a flexible base material layer, a medical pressure-sensitive adhesive layer arranged on the lower surface of the flexible base material layer and a silicone functional layer arranged in the adhesive layer. The flexible base material layer is made of medical non-woven fabric, elastic non-woven fabric, polyurethane film or silicone composite film. The medical pressure-sensitive adhesive layer is acrylic ester pressure-sensitive adhesive without latex. The silicone functional layer contains polydimethylsiloxane and is used for inhibiting scar proliferation.
4. The wound closure device of claim 1, wherein: Upper and lower ends of the clamping strip (8) are provided with guide grooves (81) for sliding cooperation with the inner wall of the fixing base (4), and the front and rear sides of the clamping strip (8) are fixed with racks (82) which are arranged along the length direction of the clamping strip (8).
5. The wound closure device of claim 1, wherein: The pulling member (9) comprises a main gear (91), a slave gear (93) and a gear set (92) connecting the main gear (91) and the slave gear (93). The main gear (91) and the slave gear (93) are rotatably arranged in the fixing base (4), and the lower part of the main gear (91) and the lower part of the slave gear (93) are respectively engaged with the racks (82) arranged on the front and rear sides of the clamping strip (8). The gear set (92) is composed of two mutually engaged guide gears, one of which is engaged with the upper part of the main gear (91) and the other of which is engaged with the upper part of the slave gear (93).
6. A wound closure device according to claim 5, wherein: The clamping strip (8), the main gear (91), the slave gear (93) and the gear set (92) are integrally formed by injection molding with polyformaldehyde, polycarbonate or medical-grade nylon material.
7. The wound closure device of claim 1, wherein: The knob (10) comprises a rotating shaft (102) rotatably installed inside the fixed seat (4); A groove (101) is formed in the upper end of the fixed seat (4), and the upper end of the rotating shaft (102) extends into the groove (101); The side wall of the groove (101) is connected with a positioning groove (105); A disc (103) is fixedly sleeved outside the rotating shaft (102) in the groove (101), and the upper end of the disc (103) is provided with an elastic positioning piece (104).
8. A wound closure device according to claim 7, wherein: The elastic positioning piece (104) comprises a vertical part (1041), an inclined support part (1042), a rebound part (1043) and a positioning part (1044); The vertical part (1041) is fixed to the upper end of the disc (103); The inclined support part (1042) is connected to the upper end of the vertical part (1041) and is fixed to the disc (103), forming a triangular support structure; The rebound part (1043) is connected to the lower end of the vertical part (1041), and the upper end of the rebound part (1043) is connected to the positioning part (1044); The positioning part (1044) is matched with the positioning groove (105) to limit and prevent rotation after the elastic positioning piece (104) is rotated into position.
9. A wound closure device according to claim 8, wherein: The elastic positioning piece (104) is made of a medical elastic polymer material, and the material is selected from any one of polyformaldehyde, polyamide, thermoplastic polyurethane or polyether ether ketone.
10. The wound closure device of claim 1, wherein: The movable part (11) comprises a rotating disc (111) fixedly sleeved outside the rotating shaft (102) and a driven disc (114) fixedly sleeved outside the shaft end of the main gear (91); The lower end of the rotating disc (111) is fixedly provided with a limiting block (112) and a pushing rod (113); The outer periphery of the driven disc (114) is alternately provided with a limiting groove (115) and a pushing groove (116); When the rotating disc (111) rotates with the rotating shaft (102), the pushing rod (113) is sequentially inserted into the pushing groove (116) and pushes the driven disc (114) to rotate, and then the limiting block (112) is inserted into the limiting groove (115) to limit the rotation of the driven disc (114), so as to realize the step-by-step rotation of the main gear (91).