Wound closure device

Abstract

The present invention discloses a wound closure device, which belongs to the field of medical supplies and provides a wound closure device that is not easy to cause skin damage and is not easy to fall off. The wound closure device includes two skin adhesives for connecting with the skin surfaces on both sides of the wound and a wound puller arranged between the two skin adhesives and connected to the two skin adhesives respectively. The skin adhesive includes a main adhesive layer connected to the wound puller and a flexible adhesive part connected to the peripheral edge or the entire edge of the main adhesive layer. The present invention solves the problem that the skin adhesive should have good tensile bearing and dispersion performance, and at the same time be able to flexibly adapt to the dynamic changes in the complexity of multiple curved surfaces of the wound, so as to maintain the effectiveness and firmness of the adhesion; therefore, it is particularly suitable for pasting wounds on special active parts of the human body composed of multiple curved surfaces or spliced ​​planes.

Description

Technical Field

[0001] The present invention relates to the field of medical supplies, and in particular to a wound closure device. Background Art

[0002] Wound closure, also known as wound suture, wound healing device or wound puller, is a device used to pull the wound together to promote wound healing. Common wound closures use tensioning pieces on both sides of the wound to pull the skin adhesive pieces attached to the skin on both sides of the wound together, thereby driving the skin edges of the skin on both sides of the wound to pull together in the middle. However, conventional wound closures are only suitable for the adhesive closure of wounds where the skin surfaces on both sides of the wound, such as the abdomen and back of the human body, are roughly in the same relatively static plane; they are not suitable for wounds where the adhesive surface is composed of multiple curved surfaces or multiple spliced ​​surfaces that are not in the same plane, such as wounds in special parts of the human body: such as maxillofacial, head and neck, breast, armpits, knees, elbows, limb joints and other active parts. Because the skin adhesive surfaces on both sides of the wounds in such special parts of the human body are usually composed of multiple curved surfaces or multiple spliced ​​surfaces that are not in the same plane, the skin adhesive surfaces on both sides of the incision cannot be included in the same static single overall plane. Moreover, the relative position, movement direction, and angle changes of each individual splicing surface during human body movement are different, and they are all in high-frequency asynchronous movement changes, resulting in the whole skin adhesive composed of a single structure being unable to adapt to the asynchronous movement between multiple independent splicing surfaces. When the movement directions between any two adjacent splicing surfaces are not synchronized, the skin adhesives located on the two adjacent splicing surfaces will be partially peeled off, lifted, and fell off, and the adhesive will fail. At this time, if the whole skin adhesive composed of a single structure is set to be very flexible, its role in bearing, dispersing, and transmitting the pulling force of the puller will be significantly weakened; if the flexibility disappears, it will be even more unable to adapt to or buffer the asynchronous movement between multiple independent splicing surfaces, and it is easier to cause the skin adhesive to peel off or fall off from the adjacent splicing surfaces, and it is even more impossible to ensure the effectiveness and firmness of the adhesive, and it is very easy to fall off and fail. At the same time, because the pulling force it bears cannot be evenly dispersed or properly buffered, the pulling force is locally gathered, which is very likely to cause skin injury problems such as skin strain and tension skin blisters; therefore, ordinary skin adhesives composed of a single structure can no longer meet the clinical effective closure of wounds in special parts of the human body. Summary of the invention

[0003] The technical problem solved by the present invention is to provide a wound closure device which is not easy to cause skin pulling damage and is not easy to lift up or fall off.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a wound closure device, including two skin adhesives for connecting to the skin surfaces on both sides of the wound and a wound closer arranged between the two skin adhesives and respectively connected to the two skin adhesives, the skin adhesive including a main adhesive layer connected to the wound closer and a flexible adhesive portion connected to the peripheral edge or the entire edge of the main adhesive layer.

[0005] Furthermore, the main body adhesive layer is a non-flexible adhesive layer.

[0006] Furthermore, the main body adhesive layer is in sheet form, is stretch-resistant in the plane direction, and can be bent in the direction perpendicular to the plane.

[0007] Furthermore, the structure of the main adhesive layer includes a main adhesive layer and a finger-shaped adhesive portion extending outward, the main adhesive layer is in a strip shape, and its long axis is parallel to the wound; one end of the finger-shaped adhesive portion is connected to the edge of the main adhesive layer, and the other end of the finger-shaped adhesive portion extends outward in a direction away from the wound side, and the finger-shaped adhesive portions are distributed at intervals along the edge of the main adhesive layer on the side facing away from the wound.

[0008] Furthermore, the flexible adhesive portion is a skirt structure distributed along the peripheral edge or the entire edge of the main adhesive layer, and the flexible adhesive portion is connected to the main adhesive layer by bonding, splicing or sheathing integral molding.

[0009] Furthermore, the skin adhesive piece also includes a flexible adhesive layer, the area of ​​which is larger than that of the main adhesive layer and extends beyond the peripheral edge of the main adhesive layer; the flexible adhesive portion is composed of the portion of the flexible adhesive layer extending beyond the main adhesive layer.

[0010] Furthermore, the main adhesive layer is attached to the upper surface of the flexible adhesive layer; or the main adhesive layer is attached to the lower surface of the flexible adhesive layer; or the main adhesive layer is sandwiched between two flexible adhesive layers; or the flexible adhesive layer is sandwiched between two main adhesive layers.

[0011] Furthermore, the flexible adhesive layer is a flexible adhesive film made of hydrogel, silica gel, rubber material or polyurethane material with tensile elasticity and bending deformation ability.

[0012] Furthermore, a hardened base belt is arranged on the main adhesive layer, the hardened base belt is arranged on the main adhesive layer close to the wound side, and the hardened base belt is connected to the wound puller.

[0013] Furthermore, the configuration of the flexible adhesive portion includes the following three types:

[0014] The first type is that a flexible adhesive portion is provided only on the distal edge of the wound of the main adhesive layer;

[0015] The second type is that the flexible adhesive portion is provided only on the edges of the main adhesive layer on the distal side and the proximal side of the wound, and the width of the flexible adhesive portion on the distal side of the wound is not less than the width of the flexible adhesive portion on the proximal side of the wound, and the thickness of the flexible adhesive portion on the distal side of the wound is not greater than the thickness of the flexible adhesive portion on the proximal side of the wound;

[0016] The third type is to set a circle of flexible adhesive part on the entire outer circumference edge of the main adhesive layer, and the width of the flexible adhesive part located on the far side of the wound is not less than the width of the flexible adhesive part located on the near side of the wound, and the width of the flexible adhesive part located on the near side of the wound is not less than the width of the flexible adhesive part located on the other two sides; at the same time, the thickness of the flexible adhesive part located on the far side of the wound is not greater than the thickness of the flexible adhesive part located on the near side of the wound.

[0017] Furthermore, the wound closer comprises a central fixing member, a side fixing member and a tensioning member; two side fixing members are provided, and the two side fixing members are respectively connected to two skin adhesive members in a one-to-one correspondence; the central fixing member is provided between the two side fixing members and is located above the wound; the central fixing member and the side fixing members on both sides are connected together by the tensioning member; the tensioning member comprises a pull rod and a pull rod fixing member; wherein one end of the pull rod is a fixed end, and the other end of the pull rod is a free end, and the fixed end is provided in the central fixing member. The free end of the pull strip can be fixed to the central fixing piece, the side fixing piece or the skin adhesive piece through the pull strip fixing piece; the tensioning piece also includes a pull strip guide limit piece and / or a pull strip return limit piece arranged on the central fixing piece or the side fixing piece; the pull strip guide limit piece is provided with a "door frame-shaped" or "flat-mouth-shaped" through-guide limit structure, and the free end of the pull strip passes through the guide limit structure; the free end of the pull strip is flipped 180 degrees around the pull strip return limit piece and then folded back.

[0018] Furthermore, the two side fixing members are respectively the side fixing member on the first side and the side fixing member on the second side; and the setting of the tensioning member includes at least the following four types:

[0019] In the first type, the fixed end of the pull strip is arranged on the side fixing piece on the first side, and the free end of the pull strip passes through the pull strip guide limiter arranged on the middle fixing piece and the pull strip guide limiter arranged on the side fixing piece on the second side, and is then fixed to the side fixing piece on the second side or the skin adhesive piece on the side by the pull strip fixing piece;

[0020] The second type is that the fixed end of the pull strip is arranged on the side fixing piece on the first side, and the free end of the pull strip passes through the pull strip guide limiter arranged on the middle fixing piece, then passes through the pull strip return limiter arranged on the side fixing piece on the second side, turns back 180 degrees, passes through the pull strip guide limiter arranged on the middle fixing piece again, and finally passes through the pull strip guide limiter arranged on the side fixing piece on the first side, and is fixed to the side fixing piece on the first side or the skin adhesive piece on that side by the pull strip fixing piece;

[0021] The third type is that pull strips are respectively arranged on both sides of the central fixing piece, the pull strip of the first side is arranged corresponding to the side fixing piece on the first side, and the pull strip of the second side is arranged corresponding to the side fixing piece on the second side; the fixed end of the pull strip on the first side is arranged on the side fixing piece on the first side, and the free end of the pull strip on the first side is folded 180 degrees by the pull strip folding limit piece arranged on the central fixing piece, and then passed through the pull strip guide limit piece arranged on the first side fixing piece, and then fixed to the side fixing piece on the first side or the skin adhesive piece on this side by the pull strip fixing piece; the fixed end of the pull strip on the second side is arranged on the side fixing piece on the second side, and the free end of the pull strip on the second side is folded 180 degrees by the pull strip folding limit piece arranged on the central fixing piece, and then passed through the pull strip guide limit piece arranged on the side fixing piece on the second side, and then fixed to the side fixing piece on the second side or the skin adhesive piece on this side by the pull strip fixing piece;

[0022] The fourth type is that pull strips are respectively arranged on both sides of the central fixing part, the pull strip of the first side is arranged corresponding to the side fixing part of the first side, and the pull strip of the second side is arranged corresponding to the side fixing part of the second side; the fixed end of the pull strip on the first side is arranged on the central fixing part, and the free end of the pull strip passes through the pull strip folding limiter arranged on the side fixing part of the first side to return the direction by 180 degrees, and then passes through the pull strip guide limiter arranged on the central fixing part to be fixed to the central fixing part by the pull strip fixing part; the fixed end of the pull strip on the second side is arranged on the central fixing part, and the free end of the pull strip on the second side passes through the pull strip folding limiter arranged on the side fixing part of the second side to return the direction by 180 degrees, and then passes through the pull strip guide limiter arranged on the central fixing part to be fixed to the central fixing part by the pull strip fixing part.

[0023] Furthermore, a dressing support frame in a long strip shape is provided on the lower surface of the central fixing part, a slide groove is provided at the bottom of the dressing support frame along its long axis direction, a slider is provided on the slide groove in a sliding manner, and a dressing body is provided at the bottom of the slider.

[0024] Furthermore, a through hole running through the center of the central fixing piece is provided in an area corresponding to the wound, a sheet-shaped dressing bracket is provided on the upper surface of the central fixing piece, and an adhesive fixing layer is provided on the lower surface of the dressing bracket corresponding to the solid area on the upper surface of the central fixing piece, so that the dressing bracket is adhered and fixed to the solid area on the upper surface of the central fixing piece; a dressing body is provided on the lower surface of the dressing bracket in an area corresponding to the through hole in the center of the central fixing piece, the dressing body passes through the through hole and the thickness of the dressing body is greater than the side wall height of the through hole.

[0025] The beneficial effects of the present invention are as follows: the present invention adopts a novel dual-structure skin adhesive structure design, which is composed of a main adhesive layer and a flexible adhesive part, and is particularly suitable for pasting wounds composed of multiple curved surfaces or multiple spliced ​​adhesive surfaces not in the same plane, so as to avoid the skin adhesive peeling off and falling off from the spliced ​​adhesive surface due to poor adhesion. More specifically, the main adhesive layer is also set as a structure similar to the finger-shaped extension of an octopus foot, that is, it is composed of a main adhesive part and an extended finger-shaped adhesive part. The suture tension generated by the puller is transmitted to the main adhesive part at the first stage, and is transmitted and dispersed to the finger-shaped adhesive part at the second stage. The finger-shaped adhesive part can disperse and extend the suture tension to a wider range of skin surfaces, so that the suture tension distributed within a unit area on the skin surfaces on both sides of the wound can be dispersed and reduced; at the same time, each finger-shaped adhesive part dispersed at the second stage can produce different degrees of surface bending, so that each different finger-shaped adhesive part can adapt to its corresponding skin adhesive surface independently, and the finger-shaped adhesive part can follow the movement independently when the human body moves, further avoiding the adhesive from warping, peeling, falling off and poor adhesion during movement. Moreover, by also being particularly provided with a kind of soft-edge-like flexible adhesive part structure pasting skin surface at the peripheral edge of the main body pasting layer, the flexible adhesive part has the flexibility closer to the skin relative to the main body pasting layer and all has better tensile elasticity and bending deformation ability in the plane direction and the vertical direction of the skin surface, when pasting the wound composed of multiple curved surfaces or multiple splicing surfaces not in the same plane, for example, the wound whose pasting surface of the active parts such as maxillofacial area, head and neck, breast, armpit, knee, elbow, limb joints cannot all be located in the same flat static plane, the flexible adhesive part can better buffer the asynchronous movement between different splicing surfaces, and can realize good compliance and good edge sealing effect between the flexible adhesive part and the flexible skin surface, increase the pasting firmness of the skin, avoid edge warping, peeling, falling off. Simultaneously, the flexible "tension buffer zone" formed between the interface of the flexible adhesive part and the skin can also avoid the local tension of aggregation directly acting on the skin surface intersecting with the skin, avoid causing skin injury, tension skin blister and other skin injuries. The present invention solves the problem that the skin adhesive piece should have good tensile bearing and dispersion performance, and at the same time be able to flexibly adapt to multiple curved surfaces of the wound or multiple moving splicing and pasting surfaces that are not in the same plane, so as to obtain better pasting effectiveness and firmness. Therefore, it is particularly suitable for pasting wounds in active parts such as maxillofacial area, head and neck, breast, armpit, knee, elbow, limb joints, etc. whose pasting surfaces cannot all be located in the same flat static plane, and solves the problem that the wounds in the special active parts of the human body are not easy to pasted, and are easy to warp, peel, fall off and not pasted firmly during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1A three-dimensional schematic diagram of an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A top view of

[0028] Figure 3 for Figure 2 Sectional view of section AA;

[0029] Figure 4 for Figure 3 A magnified schematic diagram of the local area B in the middle;

[0030] Figure 5 A top view of another embodiment of the present invention;

[0031] Figure 6 for Figure 5 A sectional view of section A1-A1;

[0032] Figure 7 for Figure 6 A magnified schematic diagram of the local area C in the middle;

[0033] Figure 8 is a schematic diagram of a unilateral skin adhesive patch;

[0034] Fig. 9 A schematic diagram of a first specific structure of a wound tightener;

[0035] Fig.10 is a schematic diagram of a second specific structure of the wound tightener;

[0036] Fig.11 is a schematic diagram of a third specific structure of the wound puller;

[0037] Marked in the figure are: flexible adhesive layer 1, main adhesive layer 2, flexible adhesive part 3, hardened base band 4, through hole 5, main adhesive part 6, finger-shaped adhesive part 7, central fixing part 8, side fixing part 9, tensioning part 10, dressing support frame 11, pull strip 12, lock buckle 13, pull strip guide limiter 14, pull strip fixing part 15, guide limit structure 16, pull strip folding limiter 17, slide groove 18, slider 19, dressing body 20, dressing bracket 21, pull strip yield groove 22. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] It should be noted that if there are directional indication terms in the present invention, such as up, down, left, right, front, and back directions and orientation terms, they are for the purpose of facilitating the description of the relative position relationship between components, and are not specific to the absolute position of the related components or the position relationship between components. They are only used to explain the relative position relationship and movement of the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. If there are terms related to quantity in the present invention, such as "multiple", "multiple", "several", etc., they specifically refer to two or more.

[0040] The wound closure device described in the present invention includes two skin adhesives for connecting to the skin surfaces on both sides of the wound and a wound closer arranged between the two skin adhesives and connected to the two skin adhesives respectively. The skin adhesive includes a main adhesive layer 2 connected to the wound closer and a flexible adhesive portion 3 connected to the peripheral edge or the entire edge of the main adhesive layer 2.

[0041] Wherein, the flexible adhesive part 3 refers to being more flexible than the main adhesive layer 2; that is, the flexible adhesive part 3 is a softer adhesive part relative to the main adhesive layer 2, so that the flexible adhesive part 3 is a more flexible adhesive structure formed by extending outward from the peripheral edge of the peripheral part of the main adhesive layer 2 or the whole circle edge, and the flexible adhesive part 3 is made of a flexible material that is closer to the skin surface flexibility and has better tensile elasticity and bending deformation ability in the plane direction and vertical direction of the skin surface, which increases the good compliance and good edge sealing effect between the skin adhesive part and the flexible skin surface, increases the adhesion firmness of the skin, and avoids the skin adhesive part edge warping, peeling, and falling off. At the same time, a flexible "tension buffer zone" can also be formed between the interface of the flexible adhesive part 3 and the skin, which can avoid the local tension of the aggregation directly acting on the skin surface of the skin interface, and avoid causing skin injuries such as skin surface strain, tension skin blisters. More specifically, the flexible adhesive part 3 can be preferably a flexible adhesive film made of hydrogel, silica gel, rubber material or flexible polyurethane material with tensile elasticity and bending deformation ability.

[0042] More specifically, the main adhesive layer 2 is a non-flexible adhesive layer; the so-called non-flexible adhesive layer does not mean that it is completely inflexible, but refers to a material layer that is "harder" than the flexible adhesive portion 3 and is not easily deformed by pulling, for example, it is set as a layer of dense polymer plastic sheet material, so that the non-flexible adhesive layer can be used to conduct and disperse the pulling force of the wound, so that the pulling force is more evenly dispersed to the outer edge of the main adhesive layer 2, and then transmitted to the corresponding flexible adhesive portion 3, and then transmitted to the corresponding flexible skin surface through the flexible adhesive portion 3. In this way, the pulling force on the skin can be more evenly dispersed, avoiding excessive concentration of skin tension force to cause skin strain, tension skin blisters and other skin injuries.

[0043] More specifically, the main body adhesive layer 2 can be preferably set in a sheet shape, and the sheet-shaped main body adhesive layer 2 is resistant to stretching in the plane direction and can be bent in the vertical direction of the sheet plane. The advantage of such a setting is that the main body adhesive layer 2 can be appropriately bent and deformed to adapt to the curved surface of the skin adhesive part while conducting and dispersing the pulling force of the wound. Specifically, the main body adhesive layer 2 can be made of polyester, polycarbonate, polyethylene, polypropylene, polyamide and other materials to form a card structure with moderate thickness.

[0044] More specifically, the structure of the main adhesive layer 2 can also be arranged as follows: it includes a main adhesive portion 6 and a finger-shaped adhesive portion 7 extending outward, the main adhesive portion 6 is in a strip shape, and its long axis is parallel to the wound, as shown in the attached drawings; one end of the finger-shaped adhesive portion 7 is connected to the edge of the main adhesive portion 6, and the other end of the finger-shaped adhesive portion 7 is extended outward in a direction away from the wound side, and a plurality of finger-shaped adhesive portions 7 are arranged at intervals along the edge of the main adhesive portion 6 facing away from the wound side. The arrangement and distribution of each finger-shaped adhesive portion 7 can also refer to the attached drawings, which can roughly form a radial dispersion structure similar to an octopus claw. The purpose of such arrangement is to form a skeleton extension structure with octopus foot-like extensions in the main body adhesive layer 2, so that the suture tension generated by the puller can be transmitted to the main body adhesive portion 6 of the main body adhesive layer 2 at the first stage, and then transmitted to the finger-shaped adhesive portions 7 on both sides at the second stage. The finger-shaped adhesive portions 7 can disperse and extend the suture tension to a wider range of skin surfaces, so that the suture tension allocated per unit area on the skin surfaces on both sides of the wound can be dispersed and reduced; at the same time, the sheet-like surfaces of each finger-shaped adhesive portion 7 dispersed at the second stage can be bent to different degrees, so that each finger-shaped adhesive portion 7 with different bending degrees can be independently adapted to its corresponding curved skin adhesive surface, or the dispersed finger-shaped adhesive portions 7 can be independently adapted to dispersed splicing surfaces that are not in the same overall plane; when the human body moves, the sheet-like finger-shaped adhesive portions can be independently changed with the movement, so as to avoid the adhesive piece from warping, peeling, falling off and being loosely adhered during movement.

[0045] More specifically, a flexible soft edge structure similar to the soft edge of a turtle formed by a flexible adhesive portion 3 can also be provided at the outer peripheral edges of the main adhesive portion 6 and the extended finger-shaped adhesive portion 7 of the main adhesive layer 2. In this way, when the skin adhesive is used to paste wounds composed of multiple curved surfaces or multiple spliced ​​surfaces that are not in the same plane, for example, when pasting wounds in active parts such as the maxillofacial region, head and neck, breast, armpits, knees, elbows, limb joints, etc., and the adhesive surfaces cannot all be located in the same flat and static plane: on the one hand, the skin adhesive can transfer the suturing tension generated by the puller to the main adhesive portion 6 of the main adhesive layer 2 at the first stage, and transfer it to the finger-shaped adhesive portions 7 on both sides at the second stage. The finger-shaped adhesive portions 7 can disperse and extend the suturing tension to a larger range of skin surfaces, so that the suturing tension levels distributed per unit area on the skin surfaces on both sides of the wound are dispersed and reduced. At this time, the skin adhesive has good overall performance in withstanding the pull of the puller and effective tension transmission and dispersion performance. Because the surfaces of each finger-shaped adhesive part 7 of the second-level dispersion can be independently produced in different degrees of bending, the finger-shaped adhesive part 7 of each different bending degree can be independently adapted to the skin adhesive surface of its corresponding bending or the splicing surface not in the same plane, and the finger-shaped adhesive part can be independently followed by the change of its movement when the human body moves, and the adhesive part can be further prevented from warping, peeling, falling off and sticking loosely when moving. On the other hand, the flexible adhesive part 3 of the soft edge of the turtle similar to that of the outer edge of all the main body adhesive parts 6 and the extended finger-shaped adhesive part 7 exists in the outer periphery of all skin adhesive parts, including the flexible adhesive part 3 of the soft edge of the turtle similar to that of the outer edge of all the main body adhesive parts 6 and the extended finger-shaped adhesive part 7, because it has the flexibility closer to the skin and all has better tensile elasticity and bending deformation ability in the plane direction and the vertical direction of the skin surface, can better buffer the asynchronous movement between different splicing surfaces; when pasting the wound composed of a plurality of curved surfaces or a plurality of splicing surfaces not in the same plane, the pasting effectiveness and firmness of the skin adhesive part are greatly increased, and the skin adhesive part edge is prevented from warping, peeling, falling off, so that the skin adhesive part has good flexibility at the same time, has good skin surface compliance and good edge sealing effect. Since a flexible "tension buffer zone" can be formed between the interface of the flexible adhesive part 3 and the skin, it can also prevent the local tension from acting directly on the skin surface at the interface with the skin, thus avoiding skin damage such as skin surface strain, tension skin blisters, etc. Therefore, it is particularly suitable for pasting wounds in active parts such as maxillofacial area, head and neck, breast, armpit, knee, elbow, limb joints, etc., and the pasting surface cannot all be located on the same flat static plane, solving the problems that the wounds in the special active parts of the human body are not easy to pasted, and are easy to warp, peel, fall off and not pasted firmly during exercise.

[0046] More specifically, there is no theoretical limit to the specific number of finger-shaped adhesive portions 7. As shown in the example of the drawings, three finger-shaped adhesive portions 7 are provided. If the size of the main adhesive portion 6 is relatively large, more finger-shaped adhesive portions 7 may be provided.

[0047] More specifically, regarding the specific configuration and formation of the flexible adhesive portion 3, at least the following configurations may be adopted in the present invention:

[0048] The first type is to set the skin adhesive piece to also include a flexible adhesive layer 1, the area of ​​the flexible adhesive layer 1 is larger than the area of ​​the main adhesive layer 2 and extends beyond the peripheral edge of the main adhesive layer 2; the flexible adhesive portion 3 is composed of the portion of the flexible adhesive layer 1 extending beyond the main adhesive layer 2. Of course, the above-mentioned flexible adhesive layer 1 is a relatively soft adhesive piece, such as a flexible film adhesive cloth or a flexible soft adhesive tape, and its flexibility should be "softer" than the main adhesive layer 2, so that the flexible adhesive portion 3 formed is "softer" relative to the main adhesive layer 2 and closer to the flexibility of the skin surface. More specifically, when the above-mentioned stacking mode of the flexible adhesive layer 1 and the main adhesive layer 2 is set, the position relationship between the two can be set so that the main adhesive layer 2 is set on the upper surface of the flexible adhesive layer 1; or the main adhesive layer 2 is set on the lower surface of the flexible adhesive layer 1; or the main adhesive layer 2 can be set to be sandwiched between two layers of flexible adhesive layers 1, or the flexible adhesive layer 1 can be set to be sandwiched between two layers of main adhesive layers 2.

[0049] The second type is to set the flexible adhesive portion 3 as a skirt structure set along the peripheral edge or the whole circle edge of the main adhesive layer 2, and the flexible adhesive portion 3 is connected to the main adhesive layer 2. The so-called skirt refers to a strip-shaped extension structure set only along the peripheral edge or the whole circle edge of the main adhesive layer 2. For example, when the skirt is set along the peripheral edge of the main adhesive layer 2, the skirt is roughly a closed-loop belt-shaped structure. In addition, the connection method between the skirt and the main adhesive layer 2 can be set to bonding, splicing or wrapping integrated molding, etc.; if the two are set as an integrated structure, the skirt can be directly formed by further extending the corresponding edge of the main adhesive layer 2 outward to a certain width, and the further extended skirt needs to form a softer flexible adhesive portion 3 relative to the main adhesive layer 2, so it can be achieved by setting the skirt thinner than the main adhesive layer 2, or using a material softer than the main adhesive layer 2 and using a method similar to the "two-color injection molding" process to achieve one-piece injection molding. In addition, the skirt portion can also be overlapped and connected with the main body adhesive layer 2, that is, the skirt portion overlaps with the edge portion of the main body adhesive layer 2, and the connection and force transmission between the two are achieved after the overlapping portion is connected. For example, if the main body adhesive layer 2 is set as a plastic sheet structure, and the skirt portion is set as a film adhesive layer, and one side of the film adhesive layer is an adhesive surface for sticking to the skin, and the other side of the film adhesive layer is a back surface, the connection between the two can be achieved by sticking the corresponding edge portion of the back surface of the film adhesive layer to the edge portion of the main body adhesive layer 2 of the plastic sheet.

[0050] In addition, in the present invention, when the skin adhesive piece is a laminated structure of a flexible adhesive layer 1 and a main adhesive layer 2, both the flexible adhesive layer 1 and the main adhesive layer 2 can be set to a structure including a main adhesive portion 6 and a finger-shaped adhesive portion 7; and when the skin adhesive piece is a structure composed of a main adhesive layer 2 and a skirt, the main adhesive layer 2 can be set to a structure including a main adhesive portion 6 and a finger-shaped adhesive portion 7, and the skirt can be set along the overall edge of the main adhesive portion 6 and the finger-shaped adhesive portion 7 to form a flexible adhesive portion 3.

[0051] More specifically, the flexible adhesive portion 3 is a specially designed force dispersing transition "buffer zone" structure, and its location includes the following three different solutions:

[0052] The first type is that the flexible adhesive portion 3 is only provided on the far side of the wound of the main adhesive layer 2; of course, when the finger-shaped adhesive portion 7 is provided, the flexible adhesive portion 3 can be formed corresponding to the edge of the finger-shaped adhesive portion 7. The above-mentioned flexible adhesive portion 3 on the far side of the wound of the main adhesive layer 2 is mainly responsible for evenly distributing the suture tension "step-down" to a larger range of skin surface, so the structural width of the flexible adhesive portion 3 at this position will be relatively wider and thinner; and the flexible adhesive portion 3 corresponding to the edge of the main adhesive layer 2 on the far side of the wound must be provided.

[0053] The second type is that in addition to the flexible adhesive portion 3 being provided on the far side of the wound of the main adhesive layer 2, a flexible adhesive portion 3 is also provided on the near side of the wound of the main adhesive layer 2; and the width of the flexible adhesive portion 3 on the far side of the wound is not less than the width of the flexible adhesive portion 3 on the near side of the wound, and the thickness of the flexible adhesive portion 3 on the far side of the wound is not greater than the thickness of the flexible adhesive portion 3 on the near side of the wound. Among them, the flexible adhesive portion 3 on the near side of the wound of the main adhesive layer 2 is mainly responsible for pushing and transmitting the suture force generated by the puller to the skin surface at the edge of the wound through the hardened base band 4 (when the hardened base band 4 is provided), the main adhesive layer 2, and the "flexible adhesive portion" on the near side of the wound of the main adhesive layer 2 in parallel, so as to close the edge of the wound. Therefore, the flexible adhesive portion 3 at this position is subjected to a pushing pressure, so the structural width at this position is preferably set to be narrower than the flexible adhesive portion 3 on the far side of the wound, and set to be thicker.

[0054] The third type is to form a circle of flexible adhesive portion 3 on the entire outer circumference of the main adhesive layer 2, and on the basis of the above second type, flexible adhesive portions 3 are also provided on the other two sides of the main adhesive layer 2, which can be understood as the wound proximal side, the wound distal side and the other two sides of the main adhesive layer 2 are all provided with flexible adhesive portions 3. For details, please refer to the attached Figure 8 In the schematic diagram shown, the proximal side of the wound refers to Figure 8 The upper side corresponds to the side, and the distal side of the wound refers to Figure 8 The side edges corresponding to the middle and lower edges, and when a finger-shaped adhesive portion 7 is provided, also include the corresponding edge portions of the finger-shaped adhesive portion 7, and the remaining two side edges are Figure 8 And in this structure, it is further preferred to set the width of the flexible adhesive part 3 located on the far side of the wound to be not less than the width of the flexible adhesive part 3 located on the near side of the wound, and the width of the flexible adhesive part 3 located on the near side of the wound is not less than the width of the flexible adhesive part 3 located on the other two sides; at the same time, the thickness of the flexible adhesive part 3 located on the far side of the wound is less than the thickness of the flexible adhesive part 3 located on the near side of the wound.

[0055] In addition, as the above analysis shows, the role of the flexible adhesive part 3 can be used to improve the adhesive effect between the edge part and the skin, while avoiding excessive concentration of force on the skin, etc. Therefore, in the present invention, the width of the flexible adhesive part 3 can be further preferably set to 1-10mm, which can be reasonably set according to the actual needs according to the shape or length of the wound, such as the width can be set to 1mm, 5mm or 8mm at different specific locations; the thickness can be 0.1mm, 0.5mm and other specific sizes; in this way, while ensuring the adhesive effect between the edge part and the skin, the wrinkles of this part of the skin can be further reduced, and the dispersion effect of the pulling force can be improved. In addition, in the present invention, when a laminated structure of a flexible adhesive layer 1 and a main adhesive layer 2 is provided, the size of the corresponding flexible adhesive part 3 can also be controlled by setting the area of ​​the main adhesive layer 2 to account for 50%-99% relative to the area of ​​the flexible adhesive layer 1; if the above area is specifically set to account for 90%, and the main adhesive layer 2 is reasonably set to be located in the middle of the flexible adhesive layer 1, a circle of flexible adhesive part 3 with a suitable width can be formed. Of course, the width of the above-mentioned flexible adhesive portion 3 refers to the dimension between the boundary line where the flexible adhesive portion 3 contacts the edge of the main adhesive layer 2 and the boundary line corresponding to the edge of the flexible adhesive portion 3, and the thickness refers to the maximum thickness of the flexible adhesive layer 1 of the "flexible adhesive portion", and the thickness of the "flexible adhesive portion" can also be set to gradually decrease as it extends outward in the width direction of the "flexible adhesive portion".

[0056] More specifically, in the present invention, a hardened base band 4 is further provided on the main adhesive layer 2, and the hardened base band 4 is provided on the edge of the main adhesive layer 2 close to the wound side and is provided along the side edge. The purpose of providing the hardened base band 4 is mainly to form a harder side band structure parallel to the wound with a higher force strength at the edge of the main adhesive layer 2 close to the wound side, so that in the process of pulling and closing the wound, the hardened base band 4 can further enhance the overall and uniform translational pulling of the wound edge to improve the alignment effect of the wound pulling. Without loss of generality, the hardened base band 4 should be made of a material that is "harder" than the main adhesive layer 2, such as a high-density polymer plastic sheet or other hard materials; at the same time, when the hardened base band 4 is provided, the wound puller can be further directly connected to the hardened base band 4 and the force can be transmitted through the hardened base band 4 and connected to the main adhesive layer 2.

[0057] In addition, in order to avoid the skin injury caused by the sharp corner structure of the skin adhesive piece forming a tension concentration point, the present invention further preferably sets the edge corners and edge connection parts of the skin adhesive piece to have a smooth arc transition; that is, the corresponding position is smoothly transitioned in the tangent direction of the edge. For details, please refer to the attached Figure 2 The rounded corner structures at the corner positions shown in FIG.

[0058] The wound puller in the present invention is used to provide a pulling force to the skin adhesives on both sides, and finally pull the skin on both sides of the wound to the middle of the wound, so that the wound is pulled and closed. More specifically, the wound puller in the present invention may specifically include a central fixing member 8, a side fixing member 9 and a tensioning member 10; wherein two side fixing members 9 are provided, and the two side fixing members 9 are respectively connected to the two skin adhesives in a one-to-one correspondence; the central fixing member 8 is provided between the two side fixing members 9 and located above the wound; the central fixing member 8 and the side fixing members 9 on both sides are connected together by the tensioning member 10. For example, the tensioning members 10 are respectively provided between the central fixing member 8 and the side fixing members 9 on both sides for connection, or the tensioning members 10 passing through the central fixing member 8 are provided between the side fixing members 9 on both sides for connection. Through the above arrangement, the pulling effect on the skin adhesives on both sides can be achieved by tensioning the tensioning member 10.

[0059] In addition, the side fixing member 9 of the present invention is used to cooperate with the tension member 10 to apply a wound pulling force to the skin adhesive member, that is, a wound suturing tension. Without loss of generality, the side fixing member 9 can be a separate component, such as an attached Figure 4 As shown in , it can be set as a layer of structural members pasted on the main adhesive layer 2; of course, the side fixing member 9 can also be set as a structure integrated with the main adhesive layer 2, that is, a local structure for cooperating with the tension member 10 is set on the main adhesive layer 2 as the side fixing member 9. In addition, the tension member 10 can also be integrated with the side fixing member 9 as an integrated structure, as shown in the attached Figure 4 In the specific example shown in FIG, the tensioning member 10 and the side fixing member 9 are an integrated belt-shaped structure, a part of the structure at one end of the integrated belt-shaped structure forms the side fixing member 9 and is directly attached to the main body adhesive layer 2, and a part of the structure at the other end of the integrated belt-shaped structure forms the belt-shaped tensioning member 10. In addition, if a hardened base belt 4 is further provided, the side fixing member 9 can also be integrated with the hardened base belt 4 or the side fixing member 9 can be connected to the hardened base belt 4.

[0060] In addition, the tensioning member 10 includes a pull strip 12 and a pull strip fixing member 15; wherein, one end of the pull strip 12 is a fixed end, and the fixed end is arranged on the central fixing member 8 or the side fixing member 9, and the other end of the pull strip 12 is a free end, and the free end can be fixed to the central fixing member 8, the side fixing member 9 or the skin adhesive member through the pull strip fixing member 15. For example, the pull strip 12 is a strip-shaped drawstring and the pull strip fixing member 15 is an adhesive layer arranged at the free end of the pull strip 12. Or, for example, the pull strip 12 is a ratchet and the pull strip fixing member 15 is a lock buckle 13, a ratchet is arranged on the ratchet, and a pawl is arranged in the lock buckle 13, and when the ratchet passes through the lock buckle 13, a unidirectional limiting locking is achieved by the pawl and the ratchet; that is, a unidirectional locking structure of the pawl and the ratchet is achieved, so that the ratchet can only be pulled in one direction, which can prevent the wound from bursting during the process of pulling the wound.

[0061] In addition, the tensioning member 10 may also include a pull rod guide limit member 14 and / or a pull rod folding limit member 17; the pull rod guide limit member 14 is provided with a "door frame-shaped" or "flat-mouth-shaped" through-guide limit structure, and the free end of the pull rod 12 passes through the guide limit structure; the pull rod folding limit member 17 is arranged on the central fixing member 8 or the side fixing member 9, and the free end of the pull rod 12 is flipped 180 degrees around the pull rod folding limit member 17 and then folded back.

[0062] Among them, the setting of the pull-bar guide limiter 14 can play a limiting and guiding role for the pull-bar 12, and after the pull-bar 12 is limited and guided, it can only be pulled along the long axis direction of the pull-bar 12. Of course, the pulling direction of the pull-bar 12 should be roughly perpendicular to the direction of the wound, so that the wound can be more advantageously pulled to the middle and aligned through the pulling action of the pull-bar 12. Specifically, the pull-bar guide limiter 14 can be set as a layer of plastic card that is pasted to the skin adhesive piece at intervals through the interval between two adjacent pasting points and forms a "flat-mouth-shaped" through-hole structure between the skin adhesive piece as a guiding and limiting structure.

[0063] The pull rod folding limiter 17 can be set as an axis structure, and the axis is installed on the corresponding structure through a necessary mounting seat, or the pull rod folding limiter 17 can be set as a through-hole structure, such as the attached Figure 1 And attached Figure 5 As shown in FIG. 1 , the pull rod folding limiter 17 is set as a folded through hole structure, and attached Figure 1 and attached Figure 5 The embodiment shown in the figure is a structure in which the pull rod folding limiter 17 and the central fixing member 8 are further integrated into one.

[0064] As for the specific structure of the tensioning member 10 in the present invention, it can be implemented by adopting the following several types of different specific solutions, wherein for the convenience of description, two side fixing members 9 are provided, namely, the side fixing member 9 on the first side and the side fixing member 9 on the second side:

[0065] The first type is that the fixed end of the pull strip 12 is arranged on the side fixing member 9 on the first side, and the free end of the pull strip 12 passes through the pull strip guide limiter 14 arranged on the middle fixing member 8 and the pull strip guide limiter 14 arranged on the side fixing member 9 on the second side, and is fixed to the side fixing member 9 on the second side or the skin adhesive member on the side by the pull strip fixing member 15;

[0066] The second type is that the fixed end of the pull strip 12 is arranged on the side fixing piece 9 on the first side, and the free end of the pull strip 12 passes through the pull strip guide limiter 14 arranged on the middle fixing piece 8, and then passes through the pull strip return limiter 17 arranged on the side fixing piece 9 on the second side to return 180 degrees, and then passes through the pull strip guide limiter 14 arranged on the middle fixing piece 8 again, and finally passes through the pull strip guide limiter 14 arranged on the side fixing piece 9 on the first side, and is fixed to the side fixing piece 9 on the first side or the skin adhesive piece on that side by the pull strip fixing piece 15;

[0067] The third type is that a pull strip 12 is respectively arranged on both sides of the central fixing member 8, the pull strip 12 on the first side is arranged corresponding to the side fixing member 9 on the first side, and the pull strip 12 on the second side is arranged corresponding to the side fixing member 9 on the second side; the fixed end of the pull strip 12 on the first side is arranged on the side fixing member 9 on the first side, and the free end of the pull strip 12 on the first side is folded 180 degrees through the pull strip folding limiter 17 arranged on the central fixing member 8, and then passes through the pull strip guide arranged on the first side fixing member 9. The limiting member 14 is then fixed to the side fixing member 9 on the first side or the skin adhesive member on that side by the pulling strip fixing member 15; the fixed end of the pulling strip 12 on the second side is arranged on the side fixing member 9 on the second side, and the free end of the pulling strip 12 on the second side is folded back 180 degrees by the pulling strip folding limiting member 17 arranged on the middle fixing member 8, and then is fixed to the side fixing member 9 on the second side or the skin adhesive member on that side by the pulling strip fixing member 15 through the pulling strip guiding limiting member 14 arranged on the side fixing member 9 on the second side;

[0068] The fourth type is that a pull strip 12 is respectively arranged on both sides of the central fixing part 8, the pull strip 12 of the first side is arranged corresponding to the side fixing part 9 on the first side, and the pull strip 12 of the second side is arranged corresponding to the side fixing part 9 on the second side; the fixed end of the pull strip 12 on the first side is arranged on the central fixing part 8, and the free end of the pull strip 12 is folded 180 degrees in the direction of the pull strip return limiter 17 arranged on the side fixing part 9 on the first side, and then is fixed to the central fixing part 8 by the pull strip fixing part 15 after passing through the pull strip guide limiter 14 arranged on the central fixing part 8; the fixed end of the pull strip 12 on the second side is arranged on the central fixing part 8, and the free end of the pull strip 12 on the second side is folded 180 degrees in the direction of the pull strip return limiter 17 arranged on the side fixing part 9 on the second side, and then is fixed to the central fixing part 8 by the pull strip fixing part 15 after passing through the pull strip guide limiter 14 arranged on the central fixing part 8.

[0069] In addition, when the pull rod 12 is a ratchet and the pull rod fixing member 15 is a lock buckle 13, the setting of the tensioning member 10 may also include the following specific solutions:

[0070] The first type is that the lock buckle 13 is fixedly arranged on the central fixing piece 8, the fixed end of the pull rod 12 is fixed on the side fixing piece 9, and the free end of the pull rod 12 passes through the lock buckle 13 toward the central fixing piece 8 and is restricted and locked by the ratchet;

[0071] The second type is that the lock buckle 13 is fixedly arranged on the side fixing member 9, the fixed end of the pull rod 12 is fixed on the middle fixing member 8, and the free end of the pull rod 12 passes through the lock buckle 13 toward the side fixing member 9 and is restricted and locked by the ratchet;

[0072] The third type is that the lock buckle 13 is fixedly set on the side fixing piece 9 on one side, and the fixed end of the pull rod 12 is fixed on the side fixing piece 9 on the other side. The free end of the pull rod 12 passes through the guide hole or guide groove structure set on the central fixing piece 8 and then passes through the lock buckle 13 on the opposite side fixing piece 9 and is restricted and locked by the ratchet.

[0073] In addition, refer to the attached Figure 6 As shown in , a dressing support frame 11 in a long strip shape can also be provided on the lower surface of the central fixing member 8, a slide groove 18 is provided at the bottom of the dressing support frame 11 along its long axis direction, a slider 19 is provided on the slide groove 18 in a sliding manner, and a dressing body 20 is provided at the bottom of the slider 19. The advantage of such a setting is that the dressing body 20 can be conveniently and quickly replaced by sliding through the sliding groove 18 and the slider 19; and the dressing body 20 can be directly fixed to the bottom of the slider 19 by gluing. Among them, the dressing support frame 11 and the central fixing member 8 can also be provided as an integral structure.

[0074] In addition, refer to the attached Figure 1As shown, a through hole 5 penetrating upward and downward may be provided in the area in the middle of the central fixing piece 8 corresponding to the wound, a sheet-like dressing bracket 21 may be provided on the upper surface of the central fixing piece 8, and an adhesive fixing layer may be provided on the lower surface of the dressing bracket 21 corresponding to the solid area on the upper surface of the central fixing piece 8, so that the dressing bracket 21 is adhered and fixed to the solid area on the upper surface of the central fixing piece 8; a dressing body 20 may be provided on the lower surface of the dressing bracket 21 corresponding to the through hole 5 in the middle of the central fixing piece 8, the dressing body 20 passes through the through hole 5 and the thickness of the dressing body 20 is greater than the side wall height of the through hole 5.

[0075] Among them, the dressing body 20 is actually a dressing that can improve wound hemostasis, anti-infection, promote healing, reduce scar effects or therapeutic effects, such as hemostatic sponge, chitosan anti-infection dressing, alginate dressing, iodine-containing absorbent cotton dressing and other medical dressings.

[0076] A specific embodiment 1:

[0077] See attached Figures 1 to 4A schematic diagram of a specific structure is shown in the figure, wherein the wound puller includes a central fixing member 8, a pull guide limiter 14 and a pull strip 12, the central fixing member 8 is arranged between two skin adhesive members, and a group of pull strips 12 are respectively arranged between the central fixing member 8 and the skin adhesive members on both sides for connection, and each group of pull strips 12 includes three pull strips 12; the central fixing member 8 is provided with a through hole 5 penetrating up and down in the middle of the wound corresponding to the wound, and a sheet-shaped dressing bracket 21 is provided on the upper surface of the central fixing member 8 A bonding and fixing layer is provided on the lower surface of the dressing bracket 21 corresponding to the upper surface solid area of ​​the central fixing piece 8, so that the dressing bracket 21 is bonded and fixed to the upper surface solid area of ​​the central fixing piece 8; a dressing body 20 is provided on the lower surface of the dressing bracket 21 corresponding to the central through hole 5 of the central fixing piece 8, and the dressing body 20 passes through the through hole 5 and the thickness of the dressing body 20 is greater than the side wall height of the through hole 5; in this way, the dressing bracket 21 can cover the through hole 5 to play a role in limiting and sealing the inserted dressing body 20. At the same time, a perforated structure corresponding to each pull strip 12 is arranged on the outer periphery of the central fixing part 8 as a pull strip folding limiter 17; a pull strip guide limiter 14 is arranged on each of the two skin adhesives, and the pull strip guide limiter 14 is set as a layer of plastic card, which is pasted to the skin adhesive at intervals by point pasting, and then forms a "flat-mouthed" through-hole structure between the skin adhesive through the interval between two adjacent pasting points; one end of each pull strip 12 is a fixed end, and the other end of the pull strip 12 is a free end, and an adhesive layer structure is arranged at the free end of the pull strip 12 as a pull strip fixing part 15; the fixed end of the pull strip 12 is fixed to one of the skin adhesives, and its specific fixing method can be directly pasted and fixed to the skin adhesive, the free end of the pull strip 12 passes through the corresponding perforated structure on the central fixing part 8 and is folded 180 degrees and folded back, and after folding back, passes through the guide limiter structure 16 on the pull strip guide limiter 14, and can be fixed to the skin adhesive on the same side of its fixed end through the pull strip fixing part 15.

[0078] Another specific embodiment 2:

[0079] See attached Figures 5 to 7, in which the wound puller is specifically arranged to include a central fixing member 8, a pull strip guide limit member 14 and a pull strip 12, the central fixing member 8 is arranged between two skin adhesive members, and a group of pull strips 12 are respectively arranged between the central fixing member 8 and the skin adhesive members on both sides for connection, and each group of pull strips 12 includes three pull strips 12; a dressing support frame 11 is arranged at the lower part of the central fixing member 8, and the dressing support frame 11 is in the shape of an elongated strip, and the specific shape can be referred to as shown in the accompanying drawings, a slide groove 18 is arranged at the bottom of the dressing support frame 11 along its long axis direction, a slider 19 is slidably arranged on the slide groove 18, and a dressing body 20 is arranged at the bottom of the slider 19; each pull strip 12 in the two groups of pull strips 12 located on both sides of the central fixing member 8 is arranged in pairs one by one, As shown in the accompanying drawings, three teams of pull strips 12 are formed, and a perforated structure is set on the central fixing part 8 for each pair of pull strips 12 as a pull strip return limiter 17, that is, the same pair of pull strips 12 are turned back after passing through the perforated structure corresponding to the same pull strip return limiter 17, and a pull strip clearance groove 22 is set on the lower surface of the central fixing part 8 at a position corresponding to the perforated structure, so that after the dressing support frame 11 and the bottom surface of the central fixing part 8 are attached, a channel that allows the pull strip 12 to move through and can be pulled and adjusted can be formed through the pull strip clearance groove 22; a pull strip guide limiter 14 is respectively set on the two skin adhesive parts, and a "door frame type" or "flat mouth type" guide limiter structure 16 is set on the pull strip guide limiter 14, and the pull strip guide limiter 14 can adopt the same method as the above-mentioned pair of attachments. Figures 1 to 4 The same structure as the scheme in . One end of each pull strip 12 is a fixed end, and the other end of the pull strip 12 is a free end, and an adhesive layer structure is provided at the free end of the pull strip 12 as a pull strip fixing member 15; the fixed end of the pull strip 12 is fixed to one of the skin adhesive members, and the free end of the pull strip 12 passes through the pull strip yielding groove 22 and then passes through the corresponding perforated structure on the middle fixing member 8 and folds back 180 degrees, and after folding back, passes through the guide limiting structure 16 on the pull strip guide limiting member 14 and can be fixed to the skin adhesive member on the same side of its fixed end through the pull strip fixing member 15.

Claims

1. A wound closure device, comprising two skin adhesive members for connecting to the skin surfaces on both sides of a wound and a wound closer disposed between the two skin adhesive members and connected to the two skin adhesive members respectively, characterized in that: The skin adhesive piece comprises a main adhesive layer (2) connected to the wound puller and a flexible adhesive portion (3) connected to the peripheral edge or the entire edge of the main adhesive layer (2); the wound puller comprises a central fixing piece (8), a side fixing piece (9) and a tensioning piece (10); two side fixing pieces (9) are provided, and the two side fixing pieces (9) are respectively connected to the two skin adhesive pieces in a one-to-one correspondence; the central fixing piece (8) is provided between the two side fixing pieces (9) and is located above the wound; the central fixing member (8) and the side fixing members (9) on both sides are connected together by a tension member (10); the tension member (10) comprises a pull rod (12) and a pull rod fixing member (15); wherein one end of the pull rod (12) is a fixed end, and the other end of the pull rod (12) is a free end, the fixed end is arranged on the central fixing member (8) or the side fixing member (9), and the free end can be fixed to the central fixing member (8) or the side fixing member (9) by the pull rod fixing member (15). (9) or a skin adhesive member; the tensioning member (10) further includes a pull-rod guide limiter (14) arranged on the central fixing member (8) and the side fixing member (9), or further includes a pull-rod guide limiter (14) arranged on the central fixing member (8) and the side fixing member (9) and a pull-rod return limiter (17) arranged on the side fixing member (9), or further includes a pull-rod guide limiter (14) arranged on the side fixing member (9) and a pull-rod return limiter (17) arranged on the central fixing member (8) The invention also comprises a pull rod return limiter (17) on the central fixing member (8), or further comprises a pull rod guide limiter (14) arranged on the central fixing member (8) and a pull rod return limiter (17) arranged on the side fixing member (9); the pull rod guide limiter (14) is provided with a "door frame-shaped" or "flat-mouth-shaped" through-going guide limiter structure, and the free end of the pull rod (12) passes through the guide limiter structure; the free end of the pull rod (12) turns 180 degrees around the pull rod return limiter (17) and then turns back.

2. The wound closure device according to claim 1, characterized in that: The main body adhesive layer (2) is a non-flexible adhesive layer.

3. The wound closure device according to claim 1, characterized in that: The main body adhesive layer (2) is in sheet form, and is stretch-resistant in a plane direction and can be bent in a direction perpendicular to the plane.

4. The wound closure device according to claim 3, characterized in that: The structure of the main adhesive layer (2) comprises a main adhesive portion (6) and a finger-shaped adhesive portion (7) extending outwardly, the main adhesive portion (6) being in the form of a strip, with its long axis parallel to the wound; one end of the finger-shaped adhesive portion (7) is connected to the edge of the main adhesive portion (6), and the other end of the finger-shaped adhesive portion (7) is extended outwardly in a direction away from the wound side, and the finger-shaped adhesive portions (7) are arranged at intervals along the edge of the main adhesive portion (6) on the side facing away from the wound.

5. The wound closure device according to claim 1, wherein: The flexible adhesive portion (3) is a skirt structure distributed along the peripheral edge or the entire edge of the main adhesive layer (2), and the flexible adhesive portion (3) and the main adhesive layer (2) are connected by bonding, splicing or sheathing integral molding.

6. The wound closure device according to claim 1, wherein: The skin adhesive piece further comprises a flexible adhesive layer (1), the area of ​​the flexible adhesive layer (1) being larger than the area of ​​the main adhesive layer (2) and extending beyond the peripheral edge of the main adhesive layer (2); the flexible adhesive portion (3) is constituted by the portion of the flexible adhesive layer (1) extending beyond the main adhesive layer (2).

7. The wound closure device according to claim 6, characterized in that: The main adhesive layer (2) is arranged on the upper surface of the flexible adhesive layer (1); or the main adhesive layer (2) is arranged on the lower surface of the flexible adhesive layer (1); or the main adhesive layer (2) is sandwiched between two layers of flexible adhesive layers (1); or the flexible adhesive layer (1) is sandwiched between two layers of main adhesive layers (2).

8. The wound closure device according to claim 6, wherein: The flexible adhesive layer (1) is a flexible adhesive film made of hydrogel, silica gel, rubber material or polyurethane material having stretching elasticity and bending deformation capability.

9. The wound closure device according to claim 1, wherein: A hardened base belt (4) is arranged on the main adhesive layer (2), the hardened base belt (4) is arranged on the main adhesive layer (2) close to the wound side, and the hardened base belt (4) is connected to the wound puller.

10. The wound closure device according to claim 1, wherein: The configuration of the flexible adhesive portion (3) includes the following three types: The first type is a type in which a flexible adhesive portion (3) is provided only on the distal edge of the wound of the main adhesive layer (2); The second type is that the flexible adhesive portion (3) is only provided on the edges of the main adhesive layer (2) on the distal side and the proximal side of the wound, and the width of the flexible adhesive portion (3) located on the distal side of the wound is not less than the width of the flexible adhesive portion (3) located on the proximal side of the wound, and the thickness of the flexible adhesive portion (3) located on the distal side of the wound is not greater than the thickness of the flexible adhesive portion (3) located on the proximal side of the wound; The third type is to provide a circle of flexible adhesive portion (3) on the entire outer circumference of the main adhesive layer (2), and the width of the flexible adhesive portion (3) located on the far side of the wound is not less than the width of the flexible adhesive portion (3) located on the near side of the wound, and the width of the flexible adhesive portion (3) located on the near side of the wound is not less than the width of the flexible adhesive portion (3) located on the other two sides; at the same time, the thickness of the flexible adhesive portion (3) located on the far side of the wound is not greater than the thickness of the flexible adhesive portion (3) located on the near side of the wound.

11. The wound closure device according to any one of claims 1 to 10, characterized in that: The two side fixing members (9) are respectively a first side side fixing member (9) and a second side side fixing member (9); the setting of the tensioning member (10) includes at least the following four types: The first type is that the fixed end of the pull strip (12) is arranged on the side fixing piece (9) on the first side, and the free end of the pull strip (12) passes through the pull strip guide limiter (14) arranged on the middle fixing piece (8) and the pull strip guide limiter (14) arranged on the side fixing piece (9) on the second side, and is then fixed to the side fixing piece (9) on the second side or the skin adhesive piece on the side by the pull strip fixing piece (15); The second type is that the fixed end of the pull strip (12) is arranged on the side fixing member (9) on the first side, and the free end of the pull strip (12) passes through the pull strip guide limiter (14) arranged on the middle fixing member (8), then passes through the pull strip return limiter (17) arranged on the side fixing member (9) on the second side, turns back 180 degrees, passes through the pull strip guide limiter (14) arranged on the middle fixing member (8) again, and finally passes through the pull strip guide limiter (14) arranged on the side fixing member (9) on the first side, and is fixed to the side fixing member (9) on the first side or the skin adhesive member on that side by the pull strip fixing member (15); The third type is that a pull bar (12) is respectively arranged on both sides of the central fixing member (8), a first side pull bar (12) is arranged corresponding to the side fixing member (9) on the first side, and a second side pull bar (12) is arranged corresponding to the side fixing member (9) on the second side; the fixed end of the pull bar (12) on the first side is arranged on the side fixing member (9) on the first side, and the free end of the pull bar (12) on the first side is folded back 180 degrees through a pull bar folding limiter (17) arranged on the central fixing member (8), and then passes through a pull bar guide arranged on the first side fixing member (9) The limiting member (14) is then fixed to the side fixing member (9) on the first side or the skin adhesive member on the side by the pull-bar fixing member (15); the fixed end of the pull-bar (12) on the second side is arranged on the side fixing member (9) on the second side, and the free end of the pull-bar (12) on the second side is folded back 180 degrees by the pull-bar folding limiting member (17) arranged on the middle fixing member (8), and then fixed to the side fixing member (9) on the second side or the skin adhesive member on the side by the pull-bar fixing member (15) through the pull-bar guide limiting member (14) arranged on the side fixing member (9) on the second side; A fourth type, wherein pull strips (12) are respectively arranged on both sides of the central fixing member (8), the pull strip (12) on the first side is arranged corresponding to the side fixing member (9) on the first side, and the pull strip (12) on the second side is arranged corresponding to the side fixing member (9) on the second side; the fixed end of the pull strip (12) on the first side is arranged on the central fixing member (8), and the free end of the pull strip (12) is folded back 180 degrees through the pull strip folding limit member (17) arranged on the side fixing member (9) on the first side, and then is folded back through the pull strip folding limit member (17) arranged on the central fixing member (8). The pull-bar guide limiter (14) on the fixed member (8) is then fixed to the middle fixing member (8) by the pull-bar fixing member (15); the fixed end of the pull-bar (12) on the second side is arranged on the middle fixing member (8), and the free end of the pull-bar (12) on the second side is folded back 180 degrees through the pull-bar folding limiter (17) arranged on the side fixing member (9) on the second side, and then fixed to the middle fixing member (8) by the pull-bar fixing member (15) through the pull-bar guide limiter (14) arranged on the middle fixing member (8).

12. The wound closure device according to any one of claims 1 to 10, characterized in that: A dressing support frame (11) in a long strip shape is provided on the lower surface of the central fixing member (8), a slide groove (18) is provided at the bottom of the dressing support frame (11) along its long axis direction, a slider (19) is provided on the slide groove (18) in a sliding manner, and a dressing body (20) is provided at the bottom of the slider (19).

13. The wound closure device according to any one of claims 1 to 10, characterized in that: A through hole (5) penetrating from top to bottom is provided in the middle of the central fixing piece (8) in an area corresponding to the wound; a sheet-shaped dressing support (21) is provided on the upper surface of the central fixing piece (8); an adhesive fixing layer is provided on the lower surface of the dressing support (21) in an area corresponding to the upper surface of the central fixing piece (8), so that the dressing support (21) is adhesively fixed to the upper surface of the central fixing piece (8); a dressing body (20) is provided on the lower surface of the dressing support (21) in an area corresponding to the middle through hole (5) of the central fixing piece (8); the dressing body (20) passes through the through hole (5) and the thickness of the dressing body (20) is greater than the side wall height of the through hole (5).

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