CN216628623U - Wound closure device - Google Patents

Abstract

The utility model discloses a wound closer, belongs to the field of medical supplies, and provides a wound closer which is not easy to cause skin injury and not easy to fall off. The utility model solves the problems that the skin pasting piece has good tensile force bearing and dispersion performance, and simultaneously can flexibly adapt to the dynamic change of the complexity of a plurality of bending surfaces of a wound, and the effectiveness and the firmness of pasting are kept; therefore, the adhesive is particularly suitable for adhering wounds of special moving parts of a human body consisting of a plurality of curved surfaces or spliced planes.

Description

Wound closure device

Technical Field

The utility model relates to the field of medical supplies, in particular to a wound closer.

Background

Wound closure devices, which may also be referred to as wound closure devices, wound healing devices or wound pull devices, are devices used to pull a wound together to promote wound healing. The common wound closer adopts a tensioning piece oppositely pulled at two sides of a wound to pull skin pasting pieces pasted on skins at two sides of the wound together, and then the skin edges of the skins at two sides of the wound are driven to be pulled together towards the middle for folding. However, the conventional wound closure device is only suitable for the adhesive closure of wounds on two side skin surfaces of the wounds, such as the abdomen and the back of a human body, which are approximately in the same relatively static plane; it is not suitable for wounds whose adhesive surface is composed of a plurality of curved surfaces or a plurality of split surfaces which are not in the same plane, such as wounds on special parts of human body: such as wounds on the jaw, head and neck, mammary gland, armpit, knee, elbow, joints of limbs, etc. Because the skin-adhering surfaces on both sides of a wound at a particular location on the body are typically formed by combining a plurality of curved surfaces or a plurality of joined surfaces that are not in the same plane, the skin-adhering surfaces on both sides of the incision cannot fit into the same static single overall plane. And the relative position, the motion direction and the angle change of each independent splicing surface during the motion of the human body are all in the high-frequency asynchronous motion change, so that the whole skin pasting piece consisting of a single structure cannot adapt to asynchronous motion between a plurality of independent splicing surfaces, and when the motion directions between any two adjacent splicing surfaces are asynchronous, the skin pasting piece positioned on the two adjacent splicing surfaces can be partially peeled off, warped, fallen and pasted to fail. At the moment, if the whole skin pasting piece consisting of the single structure is set to have very high flexibility, the effects of bearing, dispersing and transmitting the pulling force of the drawing and combining device are obviously weakened; if the flexibility disappears, the skin adhesive part can not be adapted or buffered to asynchronous movement among a plurality of independent splicing surfaces, the skin adhesive part can be peeled off or fall off from the adjacent splicing surfaces more easily, the effectiveness and the firmness of adhesion can not be ensured, and the skin adhesive part can easily fall off and lose efficacy. Meanwhile, the pulling force born by the skin-stretching device cannot be uniformly dispersed or properly buffered, so that the pulling force is locally gathered, and the skin damage problems such as skin pulling injury, tension skin blister and the like are easily caused; therefore, the common skin adhesive member composed of a single structure has not been satisfactory for the clinically effective closure of wounds at specific sites of the human body.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a wound closer which is not easy to cause skin traction injury and is not easy to warp and fall off.

The technical scheme adopted by the utility model for solving the technical problems is as follows: wound closure ware, including two skin paste the piece and set up between two skin paste the piece and paste the wound draw the closing ware that the piece is connected with two skins respectively with the skin surface of wound both sides, skin paste the piece including paste the layer with the main part that the wound draws the closing ware to be connected and connect the flexible portion of pasting in the peripheral part edge or the whole circle edge that the layer was pasted to the main part.

Further, the method comprises the following steps: the main body pasting layer is a non-flexible pasting layer.

Further, the method comprises the following steps: the layer is pasted to the main part is the slice, and the layer is pasted to the main part and stretch-proofing in the plane direction, can bend in plane vertical direction.

Further, the method comprises the following steps: the main body adhesive layer comprises a main body adhesive layer and a finger-shaped adhesive part extending towards the outer side direction, and the main body adhesive layer is in a strip shape, and the long axis of the main body adhesive layer is parallel to the wound; one end of the finger-shaped pasting part is connected with the edge of the main body pasting layer, the other end of the finger-shaped pasting part extends outwards towards the direction far away from the wound side, and the finger-shaped pasting parts are distributed along the edge of the main body pasting layer back to the wound side at intervals.

Further, the method comprises the following steps: the flexible pasting part is of a skirt band structure distributed along the peripheral part edge or the whole circle edge of the main body pasting layer, and the flexible pasting part and the main body pasting layer are connected in a bonding, splicing or coating type integrated forming mode.

Further, the method comprises the following steps: the skin pasting piece also comprises a flexible pasting layer, the area of the flexible pasting layer is larger than that of the main body pasting layer and extends beyond the peripheral edge of the main body pasting layer; the flexible pasting part is composed of a part of the flexible pasting layer extending beyond the main body pasting layer.

Further, the method comprises the following steps: the main body sticking layer is arranged on the upper surface of the flexible sticking layer in a sticking way; or the main body pasting layer is pasted on the lower surface of the flexible pasting layer; or the main body pasting layer is clamped between the two flexible pasting layers; or the flexible adhesive layer is sandwiched between the two main body adhesive layers.

Further, the method comprises the following steps: the flexible adhesive layer is a flexible adhesive film made of hydrogel, silica gel, rubber materials or polyurethane materials with stretching elasticity and bending deformation capacity.

Further, the method comprises the following steps: the main body pasting layer is provided with a hardening base band, the hardening base band is arranged on the side, close to the wound, of the main body pasting layer, and the hardening base band is connected with the wound drawing and combining device.

Further, the method comprises the following steps: the arrangement of the flexible pasting part comprises the following three types:

first, a flexible adhesive part is arranged only on the wound far side edge of the main body adhesive layer;

second, only the wound far side and the wound near side edge of the main body pasting layer are provided with flexible pasting parts, the width of the flexible pasting part at the wound far side is not smaller than that of the flexible pasting part at the wound near side, and the thickness of the flexible pasting part at the wound far side is not larger than that of the flexible pasting part at the wound near side;

thirdly, a circle of flexible pasting part is arranged on the whole peripheral edge of the main body pasting layer, the width of the flexible pasting part positioned at the far side of the wound is not less than that of the flexible pasting part positioned at the near side of the wound, and the width of the flexible pasting part positioned at the near side of the wound is not less than that of the flexible pasting parts positioned at the two other side edges; while the thickness of the flexible adhesive portion located on the far side of the wound is not greater than the thickness of the flexible adhesive portion located on the near side of the wound.

Further, the method comprises the following steps: the wound closing device comprises a middle fixing piece, a side fixing piece and a tensioning piece; the two side fixing pieces are respectively connected with the two skin sticking pieces in a one-to-one corresponding manner; the middle fixing piece is arranged between the two side fixing pieces and is positioned above the wound; connecting the middle fixing piece and the side fixing pieces at two sides together through a tensioning piece; the tension piece comprises a brace and a brace fixing piece; one end of the brace is a fixed end, the other end of the brace is a free end, the fixed end is arranged on the middle fixing piece or the side fixing piece, and the free end can be fixed to the middle fixing piece, the side fixing piece or the skin pasting piece through the brace fixing piece; the tension piece also comprises a brace guide limiting piece and/or a brace return limiting piece which is arranged on the middle-mounted fixing piece or the side-mounted fixing piece; the brace guide limiting part is provided with a through guide limiting structure in a shape of a door frame or a flat mouth, and the free end of the brace penetrates through the guide limiting structure; the free end of the brace turns back after turning over 180 degrees around the brace turn-back limiting part.

Further, the method comprises the following steps: the two side fixing pieces are respectively a side fixing piece at the first side and a side fixing piece at the second side; the arrangement of the tension piece at least comprises the following four types:

the first one is that the fixed end of the brace is arranged on the side fixing piece on the first side, and the free end of the brace is fixed on the side fixing piece on the second side or the skin pasting piece on the side by the brace fixing piece after passing through the brace guide limiting piece arranged on the middle fixing piece and the brace guide limiting piece arranged on the side fixing piece on the second side;

secondly, the fixed end of the brace is arranged on the side fixing piece on the first side, the free end of the brace is led to the limiting piece through the brace arranged on the middle fixing piece, then is led back to the direction 180 degrees through the brace back-turning limiting piece arranged on the side fixing piece on the second side, is led to the limiting piece through the brace arranged on the middle fixing piece again, and finally is fixed on the side fixing piece on the first side or the skin pasting piece on the first side through the brace guiding limiting piece arranged on the side fixing piece on the first side;

thirdly, the two sides of the middle fixing piece are respectively provided with a brace, the brace corresponding to the side fixing piece on the first side is provided with a brace on the first side, and the brace corresponding to the side fixing piece on the second side is provided with a brace on the second side; the fixed end of the brace at the first side is arranged on the side fixing piece at the first side, and the free end of the brace at the first side is fixed on the side fixing piece at the first side or the skin pasting piece at the first side by the brace fixing piece after being turned back for 180 degrees through the brace turning back limiting piece arranged on the middle fixing piece and then being guided to the limiting piece through the brace arranged on the first side fixing piece; the fixed end of the brace at the second side is arranged on the side fixing piece at the second side, and the free end of the brace at the second side is fixed on the side fixing piece at the second side or the skin pasting piece at the side by the brace fixing piece after being turned back for 180 degrees through the brace return limiting piece arranged on the middle fixing piece and then being guided by the brace arranged on the side fixing piece at the second side;

fourthly, the two sides of the middle fixing piece are respectively provided with a brace, the brace corresponding to the side fixing piece on the first side is provided with a brace on the first side, and the brace corresponding to the side fixing piece on the second side is provided with a brace on the second side; the fixed end of the brace at the first side is arranged on the middle-mounted fixing piece, and the free end of the brace is fixed on the middle-mounted fixing piece by the brace fixing piece after being turned back for 180 degrees through the brace turn-back limiting piece arranged on the side-mounted fixing piece at the first side and then being guided by the brace guide limiting piece arranged on the middle-mounted fixing piece; the fixed end of the brace on the second side is arranged on the middle-arranged fixing piece, the free end of the brace on the second side is folded back to the limiting piece through the brace arranged on the side-arranged fixing piece on the second side, and the free end of the brace on the second side is fixed on the middle-arranged fixing piece through the brace fixing piece after being folded back by 180 degrees in the direction of the folding back, and then is guided to the limiting piece through the brace arranged on the middle-arranged fixing piece.

Further, the method comprises the following steps: the lower surface of the middle fixing part is provided with a dressing support frame connected with a strip shape, the bottom of the dressing support frame is provided with a sliding groove along the long axis direction of the dressing support frame, the sliding groove is provided with a sliding block in a sliding fit mode, and the bottom of the sliding block is provided with a dressing body.

Further, the method comprises the following steps: a through hole which penetrates through the middle of the middle-placed fixing piece up and down is formed in the area corresponding to the wound, a sheet dressing support is arranged on the upper surface of the middle-placed fixing piece, and a sticking and fixing layer is arranged on the lower surface of the dressing support corresponding to the solid area of the upper surface of the middle-placed fixing piece, so that the dressing support and the solid area of the upper surface of the middle-placed fixing piece are stuck and fixed; the lower surface of the dressing support is provided with a dressing body corresponding to the area of the middle through hole of the middle fixing piece, the dressing body penetrates through the through hole, and the thickness of the dressing body is larger than the height of the side wall of the through hole.

The utility model has the beneficial effects that: the utility model adopts a novel skin adhesive part structure design with a binary framework, namely the skin adhesive part is formed by combining a main body adhesive layer and a flexible adhesive part, is particularly suitable for adhering a wound consisting of a plurality of curved surfaces or a plurality of spliced adhesive surfaces which are not in the same plane, and avoids the skin adhesive part from peeling off and falling off from the spliced adhesive surfaces due to infirm adhesion. More specifically, the main body pasting layer is also provided with a structure similar to the finger-shaped extension of octopus feet, namely, the structure consists of a main body pasting part and an extended finger-shaped pasting part, the stitching pulling force generated by the pulling and combining device is transmitted to the main body pasting part at the first stage and is transmitted and dispersed to the finger-shaped pasting part at the second stage, and the finger-shaped pasting part can transmit the stitching pulling force in a dispersing and extending way to a wider range of skin surfaces, so that the stitching pulling force distributed in a unit area on the skin surfaces at two sides of a wound is dispersed and reduced in a stepped way; meanwhile, the finger-shaped sticking parts dispersed in the second stage can generate surface bending in different degrees, so that each different finger-shaped sticking part can independently adapt to the corresponding skin sticking surface, and the finger-shaped sticking parts can independently change along with the movement of a human body when the human body moves, thereby further avoiding the sticking piece from being warped, peeled off, fallen off and stuck infirm when the sticking piece moves. Moreover, the peripheral edge of the main body pasting layer is also particularly provided with a flexible pasting part structure similar to soft edges of turtles to be pasted on the skin surface, the flexible pasting part has flexibility closer to the skin relative to the main body pasting layer and has better stretching elasticity and bending deformation capability in the plane direction and the vertical direction of the skin surface, when the softer flexible pasting part is pasted on a wound consisting of a plurality of curved surfaces or a plurality of spliced surfaces which are not in the same plane, the pasting surfaces of movable parts such as jaw face parts, head and neck parts, mammary glands, armpits, knees, elbows, joints of four limbs and the like can not be all positioned on the same flat static plane, the flexible pasting part can better buffer asynchronous movement between different spliced surfaces, and good compliance and good edge sealing effect can be realized between the flexible pasting part and the flexible skin surface, the paste firmness of the skin is improved, and the phenomena of edge upwarping, peeling and falling off are avoided. Meanwhile, a flexible tension buffer area is formed between the interface of the flexible pasting part and the skin, so that the gathered local tension can be prevented from directly acting on the skin surface which is connected with the skin, and skin injuries such as skin strain, tension skin blister and the like can be avoided. The utility model solves the problem that the skin pasting piece has good tensile force bearing and dispersion performance, and simultaneously can flexibly adapt to a plurality of curved surfaces of wounds or a plurality of splicing pasting surfaces which do not move in the same plane, thereby obtaining better pasting effectiveness and firmness. Therefore, the adhesive is particularly suitable for adhering wounds on movable parts such as maxillofacial parts, head and neck parts, mammary glands, armpits, knees, elbows, joints of four limbs and the like, and the adhering surfaces can not be positioned on the same flat static plane, and the problems that the wounds on the special movable parts of the human body are not easy to adhere and are easy to warp, peel off, fall off and be not firmly adhered are solved.

Drawings

FIG. 1 is a schematic perspective view of one embodiment of the present invention;

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

FIG. 3 is a cross-sectional view of section A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion B of FIG. 3;

FIG. 5 is a top view of another embodiment of the present invention;

FIG. 6 is a cross-sectional view of section A1-A1 of FIG. 5;

FIG. 7 is an enlarged view of a portion C of FIG. 6;

FIG. 8 is a schematic view of a one-sided skin-adhesive element;

FIG. 9 is a schematic view of a first embodiment of a wound closure device;

FIG. 10 is a schematic view of a second embodiment of a wound retractor;

FIG. 11 is a schematic view of a third embodiment of a wound retractor;

labeled as: the flexible adhesive layer 1, the main body adhesive layer 2, the flexible adhesive part 3, the hardening base band 4, the through hole 5, the main body adhesive part 6, the finger-shaped adhesive part 7, the middle fixing part 8, the side fixing part 9, the tensioning part 10, the dressing support frame 11, the brace 12, the lock catch 13, the brace guide limiting part 14, the brace fixing part 15, the guide limiting structure 16, the brace folding-back limiting part 17, the sliding groove 18, the sliding block 19, the dressing body 20, the dressing support 21 and the brace abdicating groove 22.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

It should be noted that, if there are directional indication terms, such as the terms of direction and orientation, above, below, left, right, front and back, in the present invention, for facilitating the description of the relative positional relationship between the components, the absolute position that is not the positional relationship between the related components and the components is specifically referred to, and is only used for explaining the relative positional relationship and the motion situation between the components in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly. When the present invention relates to a number, such as "a plurality", "several", etc., two or more than two are specifically referred to.

The wound closure device comprises two skin adhesion pieces connected with the skin surfaces on two sides of a wound and a wound pulling and closing device arranged between the two skin adhesion pieces and respectively connected with the two skin adhesion pieces, wherein the skin adhesion pieces comprise a main body adhesion layer 2 connected with the wound pulling and closing device and a flexible adhesion part 3 connected with the edge of the peripheral part or the whole circle of the edge of the main body adhesion layer 2.

The flexible adhesive part 3 is more flexible than the main body adhesive layer 2; the flexible part of pasting 3 is the softer part of pasting of layer 2 for the relative main part promptly, the flexible structure of pasting of periphery that layer 2 was pasted for the peripheral part edge or whole circle edge outwards extended development formation is pasted for lieing in the main part like this to flexible part of pasting 3, flexible part of pasting 3 adopts and more is close skin surface flexibility and all has the flexible material preparation of better tensile elasticity and bending deformation ability in the plane direction and the vertical direction on skin surface, good compliance and good marginal adaptation effect between skin pasting spare and the flexible skin surface have been increased, the paste fastness of skin has been increased, skin pasting spare edge upwarp has been avoided, peel off, drop. Meanwhile, a flexible tension buffer zone can be formed between the interface of the flexible pasting part 3 and the skin, so that the gathered local tension can be prevented from directly acting on the skin surface of the skin junction, and skin injuries such as skin surface pull injury, tension skin blister and the like can be avoided. More specifically, the flexible attaching portion 3 may preferably be a flexible adhesive film made of hydrogel, silicone, a rubber material, or a flexible polyurethane material having tensile elasticity and bending deformation ability.

More specifically, the main body adhesive layer 2 is a non-flexible adhesive layer; the non-flexible adhesive layer is not completely non-flexible, but refers to a material layer which is more flexible and harder than the flexible adhesive part 3 and is not easy to be pulled and deformed, for example, a layer of dense high molecular plastic sheet material is arranged, so that the purpose of conducting and dispersing the wound pulling and closing force can be achieved through the non-flexible adhesive layer, the pulling and closing force can be more uniformly distributed to the outer edge of the main body adhesive layer 2, then is conducted to the corresponding flexible adhesive part 3, and then is conducted to the corresponding flexible skin surface through the flexible adhesive part 3. Therefore, the pulling force on the skin can be more uniformly dispersed, and skin injuries such as skin strain, tension skin blister and the like caused by excessive concentration of skin tension force are avoided.

More specifically, the body attachment layer 2 may be preferably provided in a sheet shape, and the sheet-shaped body attachment layer 2 may be resistant to stretching in a planar direction and may be bendable in a direction perpendicular to the planar surface of the sheet shape. This has the advantage of allowing the body adhesive layer 2 to flex appropriately to conform to the curved surface of the skin attachment site while transmitting the force necessary to spread the wound closure. 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 a moderate thickness.

More specifically, the structure of the main body attachment layer 2 may also take the following arrangement: it comprises a main body pasting part 6 and a finger pasting part 7 extending towards the outside direction, the main body pasting part 6 is in a strip shape, the long axis of the main body pasting part is parallel to the wound, and the detailed description can refer to the figure; one end of the finger-shaped pasting part 7 is connected with the edge of the main body pasting part 6, the other end of the finger-shaped pasting part 7 extends outwards towards the direction far away from the wound side, and a plurality of finger-shaped pasting parts 7 are distributed along the edge of the wound side back to the main body pasting part 6 at intervals. The arrangement and distribution of the finger-like attachment portions 7 can also be referred to in the drawings and can generally form a radial distribution structure similar to an octopus claw. The purpose of this arrangement is that the main body pasting layer 2 forms a skeleton extending structure with similar octopus toe extension, the stitching pulling force generated by the drawing device can be transmitted to the main body pasting part 6 of the main body pasting layer 2 in the first stage, and can be transmitted to the finger pasting parts 7 at both sides in the second stage, the finger pasting parts 7 can disperse and extend the stitching pulling force to transmit to the skin surface in a wider range, so that the stitching pulling force distributed in the unit area on the skin surface at both sides of the wound can be dispersed and reduced; meanwhile, the sheet-shaped surfaces of the finger-shaped sticking parts 7 dispersed in the second stage can be bent to different degrees, so that each finger-shaped sticking part 7 with different bending degrees can be respectively and independently adapted to the corresponding bent skin sticking surface, or the dispersed finger-shaped sticking parts 7 can be respectively and independently adapted to the dispersed splicing surfaces which are not in the same integral plane; the flaky finger-shaped pasting parts can respectively and independently follow the change along with the motion change of the human body when the human body moves, so that the pasting piece is prevented from being raised, stripped, fallen off and pasted infirm when moving.

More specifically, at the peripheral edge of the main body adhering part 6 and the extended finger-shaped adhering part 7 of the main body adhering layer 2, a flexible soft edge structure similar to a soft edge of a turtle formed by the flexible adhering part 3 can be arranged; in this way, the skin patch is used for sticking a wound composed of a plurality of curved surfaces or a plurality of joined surfaces which are not in the same plane, for example, a wound of a movable part such as a maxillofacial part, a head and neck part, a breast, an armpit, a knee, an elbow, a limb joint, or the like, and in which the sticking surfaces are not all located in the same flat resting plane: on one hand, the skin adhesive member can transmit the suturing tension generated by the pulling and combining device to the main body adhesion part 6 of the main body adhesive layer 2 at the first stage and to the finger adhesion parts 7 at the two sides at the second stage, and the finger adhesion parts 7 can transmit the suturing tension dispersedly and extend to the skin surface in a wider range, so that the suturing tension distributed on the skin surface at the two sides of the wound in a unit area is dispersed and reduced in a step mode; at this time, the skin-adhesive member has good overall resistance to the pulling force of the drawer and effective dispersion of the transmission of the pulling force. Because the surfaces of the finger-shaped sticking parts 7 dispersed in the second stage can be respectively and independently bent in different degrees, the finger-shaped sticking parts 7 with different bending degrees can be respectively and independently adapted to the corresponding bent skin sticking surfaces or the splicing surfaces which are not in the same plane, the finger-shaped sticking parts can be respectively and independently changed along with the movement of a human body when the human body moves, and the sticking piece can be further prevented from being warped, peeled off, fallen off and stuck infirm when moving. On the other hand, the flexible adhesive parts 3, which are present at the outer peripheries of all the skin adhesive members, including soft edges like turtles, which are present at the outer edges of all the body adhesive parts 6 and the extended finger adhesive parts 7, can better buffer asynchronous movements between different splicing surfaces due to the flexibility closer to the skin and better stretching elasticity and bending deformation capability in both the planar direction and the vertical direction of the skin surface; when pasting the wound that comprises a plurality of curved surface or by a plurality of concatenation surfaces not in same plane, very big increase skin paste the piece paste validity and fastness, avoided skin paste the piece edge and raised, peel off, drop, consequently, skin paste the piece and have good flexibility performance again simultaneously, have good skin surface compliance and good marginal driving fit effect. Because a flexible tension buffer zone can be formed between the interface of the flexible pasting part 3 and the skin, the gathered local tension can be prevented from directly acting on the skin surface which is connected with the skin, and skin injuries such as skin surface pull injury, tension skin blister and the like can be avoided. Therefore, the adhesive is particularly suitable for adhering wounds of movable parts such as maxillofacial parts, head and neck parts, mammary glands, armpits, knees, elbows, joints of four limbs and the like, and the adhering surfaces can not be positioned on the same flat static plane, and the problems that the wounds of the special movable parts of the human body are not easy to adhere, and are easy to warp, peel, fall off and not firmly adhered during movement are solved.

More specifically, with respect to the specific number of finger paste portions 7, there is theoretically no limitation, and as in the example shown in the drawings, three finger paste portions 7 are provided; if the size of the main body attaching part 6 is relatively large, a larger number of finger attaching parts 7 can be provided.

More specifically, as for the specific arrangement and formation mode of the flexible attaching portion 3, at least the following arrangement can be adopted in the present invention:

the first method is that the skin adhesive part also comprises a flexible adhesive layer 1, the area of the flexible adhesive layer 1 is larger than that of the main body adhesive layer 2 and extends beyond the peripheral edge of the main body adhesive layer 2; the flexible adhesive part 3 is formed by a part of the flexible adhesive layer 1 extending beyond the main body adhesive layer 2. Of course, the flexible adhesive layer 1 is a relatively soft adhesive member, such as a flexible film adhesive tape or a flexible soft adhesive tape, and the flexibility thereof should be more "soft" than the main body adhesive layer 2, so that the flexible adhesive portion 3 is formed to be more "soft" relative to the main body adhesive layer 2 and more flexible to the skin surface. More specifically, in the above-mentioned lamination method in which the flexible adhesive layer 1 and the main body adhesive layer 2 are provided, the main body adhesive layer 2 may be disposed on the upper surface of the flexible adhesive layer 1 in a positional relationship with each other; or the main body pasting layer 2 is arranged on the lower surface of the flexible pasting layer 1 in a pasting way; alternatively, the main body adhesive layer 2 may be interposed between the two flexible adhesive layers 1, or the flexible adhesive layer 1 may be interposed between the two main body adhesive layers 2.

Second, the flexible adhesive portion 3 is provided in a skirt structure provided along the outer peripheral edge or the entire periphery of the main body adhesive layer 2, and the flexible adhesive portion 3 is connected to the main body adhesive layer 2. By skirting, it is meant a strip-like extension disposed only along the peripheral portion or the entire periphery of the main body adhesive layer 2, such as when the skirting is disposed along the entire periphery of the main body adhesive layer 2, the skirting is substantially a closed loop strip-like structure. Moreover, the connection mode of the skirt strip and the main body pasting layer 2 can be set as bonding, splicing or coating type integral forming, etc.; if set up the two structure as an organic whole, can be directly through pasting the corresponding edge of layer 2 with the main part and outwards further extending formation skirt area behind the structure of certain width to this further skirt area that extends is owing to need to form relative main part and pastes layer 2 and be softer flexible portion of pasting 3, therefore the accessible sets up skirt area and pastes the structure that layer 2 is thinner than the main part and realize, or uses the material that layer 2 is pasted to the main part and realizes through the integrative injection moulding of a method similar to "double-colored" technology of moulding plastics. In addition, the part of the skirt strip can be overlapped and connected with the main body pasting layer 2, namely, the part of the skirt strip is overlapped with the part of the edge of the main body pasting layer 2, and the connection force transmission of the skirt strip and the main body pasting layer is realized after the overlapped part is connected. If the main body adhesive layer 2 is configured as a plastic sheet structure and the skirt strip is configured as a film adhesive layer, one side of the film adhesive layer is an adhesive surface for adhering to the skin, and the other side of the film adhesive layer is a back surface, the connection between the main body adhesive layer 2 and the film adhesive layer can be realized by adhering the corresponding edge part of the back surface of the film adhesive layer and the edge part of the main body adhesive layer 2 of the plastic sheet.

In addition, when the skin-adhesive member has a laminated structure of the flexible adhesive layer 1 and the main body adhesive layer 2, both the flexible adhesive layer 1 and the main body adhesive layer 2 may be provided with a structure including the main body adhesive portion 6 and the finger-like adhesive portion 7; when the skin adhesive member is a structure consisting of the main body adhesive layer 2 and the skirt band, the main body adhesive layer 2 can be provided with a structure comprising the main body adhesive part 6 and the finger-shaped adhesive part 7, and the skirt band can be provided with the flexible adhesive part 3 along the integral edge of the main body adhesive part 6 and the finger-shaped adhesive part 7.

More specifically, the flexible pasting part 3 is used as a specially arranged stress dispersion transition 'buffer zone' structure, and the arrangement position thereof comprises the following three different schemes;

first, the flexible adhesive part 3 is provided only on the wound distal side of the main body adhesive layer 2; of course, when the finger-like adhesion portion 7 is provided, the flexible adhesion portion 3 may be formed at the edge of the finger-like adhesion portion 7. The flexible adhesive portion 3 located on the distal side of the wound on the main body adhesive layer 2 mainly takes care of the suture tension being "stepped down" to be uniformly dispersed over a wide range of skin surface, and therefore the flexible adhesive portion 3 at this portion is provided with a relatively wider structural width and a relatively thinner thickness; and a flexible adhesive part 3 corresponding to the edge of the main body adhesive layer 2 located on the far side of the wound is required.

Second, in addition to the flexible adhesive portion 3 provided on the wound-distal side of the main body adhesive layer 2, the flexible adhesive portion 3 is also provided on the wound-proximal side of the main body adhesive layer 2; and the width of the flexible adhesive part 3 at the far side of the wound is not less than that of the flexible adhesive part 3 at the near side of the wound, while the thickness of the flexible adhesive part 3 at the far side of the wound is not more than that of the flexible adhesive part 3 at the near side of the wound. The flexible adhesive part 3 located on the wound near side of the main body adhesive layer 2 mainly bears the suturing force generated by the pulling and closing device, and the wound skin edge is closed by pushing and transmitting the suturing force to the skin surface at the wound skin edge through the hardening base tape 4 (when the hardening base tape 4 is provided), the main body adhesive layer 2 and the 'flexible adhesive part' located on the wound near side of the main body adhesive layer 2, so the flexible adhesive part 3 at the position bears the pushing pressure, and the structural width at the position is preferably set to be narrower and thicker than the flexible adhesive part 3 located on the wound far side.

Thirdly, a circle of flexible pasting parts 3 are formed on the whole periphery edge of the main body pasting layer 2, and on the basis of the second type, the flexible pasting parts 3 are arranged on the other two side edges of the main body pasting layer 2, namely, the flexible pasting parts 3 are arranged on the periphery edge surrounded by the wound near side, the wound far side and the other two side edges of the main body pasting layer 2; reference is made in particular to the schematic illustration of fig. 8, in which the proximal side of the wound refers to the side corresponding to the upper side in fig. 8, the distal side of the wound refers to the side corresponding to the lower edge in fig. 8, and when the finger-like adhesive part 7 is provided, the corresponding edge part of the finger-like adhesive part 7 is also included, and the two remaining sides are the corresponding edges of the left and right sides in fig. 8. In this configuration, it is further preferable that 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 portions 3 located on the two remaining side edges; while the thickness of the flexible adhesive portion 3 located on the distal side of the wound is smaller than the thickness of the flexible adhesive portion 3 located on the proximal side of the wound.

In addition, as the analysis shows, the function of the flexible pasting part 3 can be used for improving the pasting effect between the edge part and the skin, and simultaneously avoiding the skin from being excessively stressed and concentrated, therefore, the width of the flexible pasting part 3 can be further preferably set to be 1-10mm, and can be reasonably set according to the actual needs according to the shape or length of the wound, for example, the width can be set to be 1mm, 5mm or 8mm at different specific positions; the thickness is 0.1mm, 0.5mm and other different specific sizes; this can further reduce wrinkles in the skin while ensuring the adhesion effect between the edge portion and the skin, and improve the effect of dispersing the pulling force. In addition, when the laminating structure of the flexible pasting layer 1 and the main body pasting layer 2 is provided, the size of the corresponding flexible pasting part 3 can be controlled by setting the area of the main body pasting layer 2 to 50-99% of the area of the flexible pasting layer 1; if the area ratio is set to be 90%, and the main body pasting layer 2 is reasonably arranged at the middle position of the flexible pasting layer 1, a circle of flexible pasting part 3 with proper width dimension can be formed. Of course, the width of the flexible pasting part 3 refers to the dimension from the boundary line of the flexible pasting part 3 contacting with the edge of the main body pasting layer 2 to the boundary line corresponding to the edge of the flexible pasting part 3, the thickness refers to the highest thickness of the flexible pasting layer 1 of the "flexible pasting part", and the thickness of the "flexible pasting part" can also be set to gradually decrease extending outwards along the width direction of the "flexible pasting part".

More specifically, the main body adhesive layer 2 is further provided with a hardening base band 4, and the hardening base band 4 is arranged on and along the edge of the main body adhesive layer 2 close to the wound side. The purpose of setting up sclerosis baseband 4 is mainly for making the edge that the layer 2 is pasted to the main part is close to the wound side form the harder side banding structure that is on a parallel with the wound of the intensity of stress is higher, like this draw close wound in-process accessible sclerosis baseband 4 further strengthen whole, the unified translation pulling to the wound edge to improve the alignment effect that the wound was drawn together. Without loss of generality, the stiffening base tape 4 should be made of a material having a hardness greater than that of the main body adhesive layer 2, such as a high-density polymer plastic sheet or other hard material; meanwhile, when the hardening base band 4 is arranged, the wound pulling and closing device can be further directly connected with the hardening base band 4 and is connected with the main body pasting layer 2 through the hardening base band 4 to transfer force.

In addition, in order to avoid the skin sticking piece from having sharp corner structure to form a tension gathering point to cause the pulling injury to the skin, the utility model further preferably sets the edge corner and the edge connecting part at each position on the skin sticking piece to be in arc smooth transition; i.e. for the corresponding positions, the rounding off in the tangential direction of the edge can be referred to in particular as rounding off at the corner positions shown in fig. 2.

The wound closing device is used for providing closing acting force to the skin pasting pieces on the two sides, and finally closing the skin on the two sides of the wound towards the middle of the wound so as to close the wound. More specifically, the wound closure device of the present invention may specifically include a middle fixing member 8, a side fixing member 9 and a tensioning member 10; wherein, two side fixing pieces 9 are arranged, and the two side fixing pieces 9 are respectively connected with the two skin sticking pieces in a one-to-one corresponding way; the middle fixing piece 8 is arranged between the two side fixing pieces 9 and is positioned above the wound; the middle fixing part 8 and the side fixing parts 9 on both sides are connected together by a tensioning part 10. For example, a tensioning member 10 is respectively arranged between the middle fixing member 8 and the side fixing members 9 at two sides for connection or a tensioning member 10 penetrating through the middle fixing member 8 is arranged between the side fixing members 9 at two sides for connection. Through the arrangement, the stretching and tensioning piece 10 can be used for stretching and closing the skin pasting pieces on the two sides.

In addition, the side-mounted fixture 9 of the present invention is used to cooperate with the tension member 10 to apply a wound closing force, i.e., a wound suturing tension, to the skin adhesive member. Without loss of generality, the side mount 9 may be a separate member, as shown in fig. 4, which may be provided as a layer of structural member adhered to the body attachment layer 2; of course, the side mount 9 may be integrated with the main body adhesive layer 2, that is, a partial structure for engaging with the tension member 10 may be provided as the side mount 9 on the main body adhesive layer 2. Alternatively, the tension member 10 and the side fixing member 9 may be integrated into a structure, such as the belt-like structure in which the tension member 10 and the side fixing member 9 are integrated into a whole as shown in fig. 4, a part of the structure at one end of the integrated belt-like structure forms the side fixing member 9 and is directly adhered to the main body adhesive layer 2, and a part of the structure at the other end of the integrated belt-like structure forms the belt-like tension member 10. In addition, if the base band 4 is further provided, the side fixing member 9 may be integrated with the base band 4 or the side fixing member 9 may be connected to the base band 4.

In addition, the tension member 10 includes a brace 12 and a brace fixing member 15; wherein, the one end of brace 12 is the stiff end, the stiff end sets up on middle mounting 8 or side mounting 9, and the other end of brace 12 is the free end, the free end can be fixed to middle mounting 8, side mounting 9 or skin paste on the piece through brace mounting 15. Such as a drawstring provided with a brace 12 in the form of a ribbon and the brace fixing 15 is an adhesive layer provided at the free end of the brace 12. Or if the brace 12 is a ratchet bar and the brace fixing piece 15 is a lock catch 13, the ratchet bar is provided with a ratchet, the lock catch 13 is internally provided with a pawl, and the ratchet bar is locked in a one-way limiting manner through the pawl and the ratchet when passing through the lock catch 13; the one-way locking structure of the pawl and the ratchet is realized, so that the ratchet strip can be pulled in one direction only, and the wound can be prevented from being broken in the process of pulling the wound to be closed.

In addition, the tension member 10 may further include a brace guide limiting member 14 and/or a brace return limiting member 17; the brace guide limiting part 14 is provided with a through guide limiting structure in a shape of a door frame or a flat mouth, and the free end of the brace 12 penetrates through the guide limiting structure; the brace foldback limiting part 17 is arranged on the middle-mounted fixing part 8 or the side-mounted fixing part 9, and the free end of the brace 12 is folded back after being turned for 180 degrees around the brace foldback limiting part 17.

The pull strip guide limiting part 14 can play a limiting and guiding role on the pull strip 12, the pull strip 12 can be pulled only along the long axis direction of the pull strip 12 after being limited and guided, and the pulling direction of the pull strip 12 is approximately perpendicular to the trend of the wound, so that the wound can be more favorably pulled towards the middle to be closed through the pulling and closing function of the pull strip 12. Specifically, for example, the brace guide limiting part 14 may be configured as a guide limiting structure formed by a through hole structure in a "flat mouth shape" between two adjacent pasting points and the skin pasting piece after a layer of plastic cards are pasted on the skin pasting piece at intervals in a point pasting manner.

Wherein, the brace folding-back limiting member 17 can be configured as a shaft structure, and the shaft is installed on the corresponding structure through the necessary installation base, or the brace folding-back limiting member 17 can be configured as a through-turning through-hole structure, as shown in fig. 1 and fig. 5, namely, the brace folding-back limiting member 17 is configured as a through-turning through-hole structure, and the embodiment shown in fig. 1 and fig. 5 is a structure that further integrates the brace folding-back limiting member 17 and the middle fixing member 8 into a whole.

As for the specific structural formation of the tension member 10 in the present invention, several different specific schemes can be adopted, wherein for the convenience of description, two side fixing members 9 are provided as a first side fixing member 9 and a second side fixing member 9 respectively:

first, the fixed end of the brace 12 is arranged on the side fixing piece 9 on the first side, and the free end of the brace 12 is fixed on the side fixing piece 9 on the second side or the skin adhesive piece on the side by the brace fixing piece 15 after passing through the brace guide limiting piece 14 arranged on the middle fixing piece 8 and the brace guide limiting piece 14 arranged on the side fixing piece 9 on the second side;

secondly, the fixed end of the brace 12 is arranged on the side fixing piece 9 on the first side, the free end of the brace 12 is guided to the limiting piece 14 through the brace arranged on the middle fixing piece 8, then is bent back by 180 degrees in the direction of the brace turn-back limiting piece 17 arranged on the side fixing piece 9 on the second side, is guided to the limiting piece 14 through the brace arranged on the middle fixing piece 8 again, and finally is fixed to the side fixing piece 9 on the first side or the skin pasting piece on the first side through the brace fixing piece 15 after passing through the brace guide limiting piece 14 arranged on the side fixing piece 9 on the first side;

thirdly, the two sides of the middle fixing piece 8 are respectively provided with a brace 12, the brace 12 at the first side is arranged corresponding to the side fixing piece 9 at the first side, and the brace 12 at the second side is arranged corresponding to the side fixing piece 9 at the second side; the fixed end of the brace 12 at the first side is arranged on the side fixing piece 9 at the first side, the free end of the brace 12 at the first side is fixed on the side fixing piece 9 at the first side or the skin pasting piece at the first side by the brace fixing piece 15 after being turned back for 180 degrees through the brace turn-back limiting piece 17 arranged on the middle fixing piece 8 and then being guided to the limiting piece 14 through the brace arranged on the first side fixing piece 9; the fixed end of the brace 12 on the second side is arranged on the side fixing piece 9 on the second side, and the free end of the brace 12 on the second side is fixed on the side fixing piece 9 on the second side or the skin pasting piece on the side through the brace fixing piece 15 after being turned back 180 degrees along the direction of the brace turn-back limiting piece 17 arranged on the middle fixing piece 8 and then being guided to the limiting piece 14 through the brace arranged on the side fixing piece 9 on the second side;

fourthly, the two sides of the middle fixing piece 8 are respectively provided with a brace 12, the brace 12 at the first side is arranged corresponding to the side fixing piece 9 at the first side, and the brace 12 at the second side is arranged corresponding to the side fixing piece 9 at the second side; the fixed end of a brace 12 on the first side is arranged on the middle fixing piece 8, and the free end of the brace 12 is fixed on the middle fixing piece 8 by a brace fixing piece 15 after being turned back for 180 degrees through a brace turning back limiting piece 17 arranged on the side fixing piece 9 on the first side and then being guided to a limiting piece 14 through a brace arranged on the middle fixing piece 8; the fixed end of the brace 12 on the second side is arranged on the middle fixing piece 8, and the free end of the brace 12 on the second side is fixed on the middle fixing piece 8 by the brace fixing piece 15 after being turned back for 180 degrees through the brace turning back limiting piece 17 arranged on the side fixing piece 9 on the second side and then being guided by the brace guiding limiting piece 14 arranged on the middle fixing piece 8.

In addition, when the brace 12 is a ratchet and the brace fixing member 15 is a structure of the latch 13, the arrangement of the tension member 10 may further include the following concentrated specific schemes:

firstly, a lock catch 13 is fixedly arranged on a middle fixing piece 8, a fixed end of a brace 12 is fixedly arranged on a side fixing piece 9, and a free end of the brace 12 penetrates through the lock catch 13 towards the middle fixing piece 8 and is limited and locked by a pawl;

secondly, a lock catch 13 is fixedly arranged on the side fixing piece 9, the fixed end of a brace 12 is fixed on the middle fixing piece 8, and the free end of the brace 12 passes through the lock catch 13 towards the side fixing piece 9 and is limited and locked by a pawl;

thirdly, the latch 13 is fixedly arranged on the side fixing piece 9 on one side, the fixed end of the brace 12 is fixedly arranged on the side fixing piece 9 on the other side, and the free end of the brace 12 passes through the guide hole or guide groove structure arranged on the middle fixing piece 8, then passes through the latch 13 on the opposite side fixing piece 9 and is limited and locked by the pawl.

In addition, referring to fig. 6, a strip-shaped dressing support frame 11 may be disposed and connected to a lower surface of the middle fixing member 8, a sliding groove 18 is disposed at a bottom of the dressing support frame 11 along a long axis direction thereof, a sliding block 19 is disposed on the sliding groove 18 in a sliding fit manner, and a dressing body 20 is disposed at a bottom of the sliding block 19. The arrangement has the advantages that the dressing body 20 can be conveniently and quickly replaced in a sliding manner through the sliding fit of the sliding grooves 18 and the sliding blocks 19; and the dressing body 20 thereof can be directly fixed to the bottom of the slider 19 by means of adhesion. Wherein, the dressing support frame 11 and the middle fixing piece 8 can also be arranged into an integral structure.

In addition, as shown in fig. 1, a through hole 5 penetrating up and down may be further provided in a region corresponding to a wound in the middle of the mid-mount fixture 8, a sheet-shaped dressing support 21 is provided on the upper surface of the mid-mount fixture 8, and an adhesive fixing layer is provided on the lower surface of the dressing support 21 corresponding to an upper surface entity region of the mid-mount fixture 8, so that the dressing support 21 is adhered and fixed to the upper surface entity region of the mid-mount fixture 8; a dressing body 20 is arranged on the lower surface of the dressing support 21 in the area corresponding to the through hole 5 in the middle of the middle fixing part 8, the dressing body 20 penetrates through the through hole 5, and the thickness of the dressing body 20 is larger than the height of the side wall of the through hole 5.

Wherein, the dressing body 20 is a dressing which can improve the wound hemostasis, anti-infection, healing promotion, scar reduction or treatment effect, such as medical dressings of hemostatic sponge, chitosan anti-infection dressing, alginate dressing, iodine-containing absorbent cotton dressing, and the like.

A specific example 1:

referring to a specific structure of the schematic drawings shown in fig. 1 to 4, the wound retractor is specifically configured to include a center-mounted fixture 8, a brace guide limiting part 14 and braces 12, the center-mounted fixture 8 is disposed between two skin-adhesive parts, a set of braces 12 is respectively disposed between the center-mounted fixture 8 and the skin-adhesive parts on both sides for connection, and each set of braces 12 includes three braces 12; a through hole 5 which penetrates through the middle of the middle-placed fixing piece 8 up and down is formed in a region corresponding to a wound, a flaky dressing support 21 is arranged on the upper surface of the middle-placed fixing piece 8, and a sticking and fixing layer is arranged on the lower surface of the dressing support 21 corresponding to an entity region of the upper surface of the middle-placed fixing piece 8, so that the dressing support 21 is stuck and fixed with the entity region of the upper surface of the middle-placed fixing piece 8; a dressing body 20 is arranged on the lower surface of the dressing support 21 in a region corresponding to the through hole 5 in the center of the middle fixing part 8, the dressing body 20 penetrates through the through hole 5, and the thickness of the dressing body 20 is larger than the height of the side wall of the through hole 5; this can be covered over the through-hole 5 by the dressing support 21 to act as a stop and seal for the inserted dressing body 20. Meanwhile, a perforated structure corresponding to each brace 12 is arranged on the periphery of the middle fixing piece 8 and serves as a brace return limiting piece 17; the two skin pasting pieces are respectively provided with a brace guide limiting piece 14, and the brace guide limiting piece 14 is a through hole structure which is arranged in a flat shape and is formed between the skin pasting pieces through the interval between two adjacent pasting points after a layer of plastic cards are pasted on the skin pasting pieces at intervals in a point pasting mode and serves as a guide limiting structure; one end of each brace 12 is a fixed end, the other end of each brace 12 is a free end, and the free end of each brace 12 is provided with an adhesive layer structure serving as a brace fixing piece 15; the fixed end of the brace 12 is fixed on one of the skin adhesive parts, the specific fixing mode can be that the brace 12 is directly fixed on the skin adhesive part in an adhesive way, the free end of the brace 12 passes through the corresponding perforation structure on the middle fixing part 8 and turns back by 180 degrees, and after the free end of the brace passes through the guide limiting structure 16 on the brace guide limiting part 14 after turning back, the free end of the brace can be fixed on the skin adhesive part on the same side with the fixed end of the brace through the brace fixing part 15.

Another specific example 2:

referring to fig. 5 to 7, a specific structure of the wound closure device is schematically shown, wherein the wound closure device specifically comprises a central fixing part 8, a brace guide limiting part 14 and braces 12, the central fixing part 8 is arranged between two skin-sticking parts, a group of braces 12 are respectively arranged between the central fixing part 8 and the skin-sticking parts on two sides for connection, and each group of braces 12 comprises three braces 12; a dressing support frame 11 is arranged at the lower part of the middle fixing part 8, the dressing support frame 11 is in a strip shape, the specific shape can refer to the drawing, a sliding groove 18 is arranged at the bottom of the dressing support frame 11 along the long axis direction of the dressing support frame, a sliding block 19 is arranged on the sliding groove 18 in a sliding fit manner, and a dressing body 20 is arranged at the bottom of the sliding block 19; the braces 12 in the two groups of braces 12 positioned on the two sides of the centrally-mounted fixing piece 8 are arranged in pairs one by one, three groups of braces 12 are formed as shown in the drawing, a perforated structure is arranged on the centrally-mounted fixing piece 8 for each pair of braces 12 to serve as a brace return limiting piece 17, namely, the same pair of braces 12 return after penetrating through the perforated structure corresponding to the same brace return limiting piece 17, a brace yielding groove 22 is arranged on the lower surface of the centrally-mounted fixing piece 8 at the position corresponding to the perforated structure, so that a channel which allows the braces 12 to movably penetrate and can be pulled to be adjusted can be formed after the dressing support frame 11 is attached to the bottom surface of the centrally-mounted fixing piece 8 through the brace yielding groove 22; a brace guide limiting part 14 is arranged on each of the two skin adhesive parts, a "doorframe-shaped" or "flat mouth shaped" guide limiting structure 16 is arranged on the brace guide limiting part 14, and the brace guide limiting part 14 can adopt the same structure as the scheme in fig. 1 to 4. One end of each brace 12 is a fixed end, the other end of each brace 12 is a free end, and the free end of each brace 12 is provided with an adhesive layer structure serving as a brace fixing piece 15; the fixed end of the brace 12 is fixed on one of the skin adhesive parts, the free end of the brace 12 passes through the brace abdicating groove 22, then passes through the corresponding perforation structure on the middle fixing part 8 and turns back by 180 degrees, and after turning back, passes through the guide limiting structure 16 on the brace guide limiting part 14, and then can be fixed on the skin adhesive part on the same side with the fixed end through the brace fixing part 15.

Claims (14)

1. Wound closer, including two skin paste the piece and set up between two skin paste the piece and draw with the wound that two skin paste the piece and be connected respectively and close ware, its characterized in that with the skin surface of wound both sides: the skin pasting piece comprises a main body pasting layer (2) connected with the wound pulling-closing device and a flexible pasting part (3) connected to the peripheral part edge or the whole circle edge of the main body pasting layer (2).

2. The wound closure device of claim 1, wherein: the main body pasting layer (2) is a non-flexible pasting layer.

3. A wound closure according to claim 1 or 2, wherein: layer (2) are pasted to the main part is the slice, and layer (2) are pasted to the main part and stretch-proofing in the plane direction, can bend in plane vertical direction.

4. The wound closure device of claim 3, wherein: the main body pasting layer (2) comprises a main body pasting part (6) and a finger-shaped pasting part (7) extending towards the outer side direction, wherein the main body pasting part (6) is in a strip shape, and the long axis of the main body pasting part is parallel to a wound; one end of the finger-shaped pasting part (7) is connected with the edge of the main body pasting part (6), the other end of the finger-shaped pasting part (7) extends outwards towards the direction far away from the wound side, and the finger-shaped pasting parts (7) are distributed along the side edge of the main body pasting part (6) back to the wound side at intervals.

5. A wound closure device as claimed in any of claims 1 to 4, wherein: the flexible pasting part (3) is of a skirt strip structure distributed along the peripheral part edge or the whole circle edge of the main body pasting layer (2), and the flexible pasting part (3) and the main body pasting layer (2) are integrally formed in a bonding, splicing or coating mode.

6. A wound closure device as claimed in any of claims 1 to 4, wherein: the skin pasting piece also comprises a flexible pasting layer (1), wherein the area of the flexible pasting layer (1) is larger than that of the main body pasting layer (2) and extends beyond the peripheral edge of the main body pasting layer (2); the flexible pasting part (3) is composed of a part of the flexible pasting layer (1) extending beyond the main body pasting layer (2).

7. The wound closure device of claim 6, wherein: the main body pasting layer (2) is pasted on the upper surface of the flexible pasting layer (1); or the main body pasting layer (2) is pasted and arranged on the lower surface of the flexible pasting layer (1); or the main body pasting layer (2) is clamped between the two flexible pasting layers (1); or the flexible adhesive layer (1) is clamped between the two main body adhesive layers (2).

8. The wound closure device of claim 6, wherein: the flexible adhesive layer (1) is a flexible adhesive film made of hydrogel, silica gel, rubber materials or polyurethane materials with stretching elasticity and bending deformation capacity.

9. A wound closure device as claimed in any of claims 1 to 8, wherein: the main body pasting layer (2) is provided with a hardening base belt (4), the hardening base belt (4) is arranged on the side, close to the wound, of the main body pasting layer (2), and the hardening base belt (4) is connected with the wound closing device.

10. A wound closure device as claimed in any of claims 1 to 9, wherein: the flexible pasting part (3) comprises the following three types:

firstly, a flexible pasting part (3) is arranged only on the far side edge of the wound of the main body pasting layer (2);

secondly, flexible pasting parts (3) are arranged on the far side and near side edges of the wound of the main body pasting layer (2), the width of the flexible pasting part (3) on the far side of the wound is not smaller than that of the flexible pasting part (3) on the near side of the wound, and the thickness of the flexible pasting part (3) on the far side of the wound is not larger than that of the flexible pasting part (3) on the near side of the wound;

thirdly, a circle of flexible pasting part (3) is arranged on the whole peripheral edge of the main body pasting layer (2), the width of the flexible pasting part (3) positioned at the far side of the wound is not less than that of the flexible pasting part (3) positioned at the near side of the wound, and the width of the flexible pasting part (3) positioned at the near side of the wound is not less than that of the flexible pasting parts (3) positioned at the two other sides; meanwhile, the thickness of the flexible pasting part (3) positioned at the far side of the wound is not more than that of the flexible pasting part (3) positioned at the near side of the wound.

11. A wound closure device as claimed in any of claims 1 to 10, wherein: the wound closing device comprises a middle fixing piece (8), a side fixing piece (9) and a tensioning piece (10); the two side fixing pieces (9) are arranged, and the two side fixing pieces (9) are respectively connected with the two skin sticking pieces in a one-to-one corresponding manner; the middle fixing piece (8) is arranged between the two side fixing pieces (9) and is positioned above the wound; the middle fixing piece (8) is connected with the side fixing pieces (9) at two sides through a tensioning piece (10); the tension piece (10) comprises a brace (12) and a brace fixing piece (15); one end of the brace (12) is a fixed end, the other end of the brace (12) is a free end, the fixed end is arranged on the middle fixing piece (8) or the side fixing piece (9), and the free end can be fixed on the middle fixing piece (8), the side fixing piece (9) or the skin pasting piece through the brace fixing piece (15); the tensioning piece (10) further comprises a brace guide limiting piece (14) and/or a brace return limiting piece (17) which is/are arranged on the middle fixing piece (8) or the side fixing piece (9); the brace guide limiting part (14) is provided with a through guide limiting structure in a shape of a door frame or a flat mouth, and the free end of the brace (12) penetrates through the guide limiting structure; the free end of the brace (12) turns back after being turned 180 degrees around the brace turn-back limiting piece (17).

12. The wound closure device of claim 11, wherein: the two side fixing pieces (9) are respectively a side fixing piece (9) at the first side and a side fixing piece (9) at the second side; the arrangement of the tension piece (10) at least comprises the following four types:

firstly, the fixed end of a brace (12) is arranged on a side fixing piece (9) at a first side, and the free end of the brace (12) is fixed on the side fixing piece (9) at a second side or a skin pasting piece at the second side by a brace fixing piece (15) after passing through a brace guide limiting piece (14) arranged on a middle fixing piece (8) and a brace guide limiting piece (14) arranged on the side fixing piece (9) at the second side;

secondly, the fixed end of a brace (12) is arranged on a side fixing piece (9) on a first side, the free end of the brace (12) is turned back for 180 degrees through a brace guide limiting piece (14) arranged on a middle fixing piece (8) and a brace turn-back limiting piece (17) arranged on a side fixing piece (9) on a second side, then is again passed through the brace guide limiting piece (14) arranged on the middle fixing piece (8), and finally is fixed on the side fixing piece (9) on the first side or a skin pasting piece on the first side through the brace fixing piece (15) after passing through the brace guide limiting piece (14) arranged on the side fixing piece (9) on the first side;

thirdly, two sides of the middle fixing piece (8) are respectively provided with a brace (12), the brace (12) at the first side is arranged corresponding to the side fixing piece (9) at the first side, and the brace (12) at the second side is arranged corresponding to the side fixing piece (9) at the second side; the fixed end of a brace (12) at the first side is arranged on the side fixing piece (9) at the first side, the free end of the brace (12) at the first side is bent back for 180 degrees through a brace folding back limiting piece (17) arranged on the middle fixing piece (8), and then is fixed on the side fixing piece (9) at the first side or a skin pasting piece at the first side through a brace fixing piece (15) after passing through a brace guiding limiting piece (14) arranged on the first side fixing piece (9); the fixed end of a brace (12) at the second side is arranged on the side fixing piece (9) at the second side, the free end of the brace (12) at the second side is bent back for 180 degrees through a brace return limiting piece (17) arranged on the middle fixing piece (8), and then is fixed on the side fixing piece (9) at the second side or a skin pasting piece at the side through a brace fixing piece (15) after passing through a brace guide limiting piece (14) arranged on the side fixing piece (9) at the second side;

fourthly, braces (12) are respectively arranged on two sides of the middle fixing piece (8), the brace (12) on the first side is arranged corresponding to the side fixing piece (9) on the first side, and the brace (12) on the second side is arranged corresponding to the side fixing piece (9) on the second side; the fixed end of a brace (12) at a first side is arranged on a middle fixing piece (8), and the free end of the brace (12) is fixed on the middle fixing piece (8) by a brace fixing piece (15) after being turned back for 180 degrees through a brace turning back limiting piece (17) arranged on a side fixing piece (9) at the first side and then being guided to a limiting piece (14) arranged on the middle fixing piece (8); the fixed end of the brace (12) on the second side is arranged on the middle fixing piece (8), the free end of the brace (12) on the second side is bent back for 180 degrees through the brace return limiting piece (17) arranged on the side fixing piece (9) on the second side, and then is fixed on the middle fixing piece (8) through the brace guide limiting piece (14) arranged on the middle fixing piece (8) by the brace fixing piece (15).

13. The wound closure device of claim 11 or 12, wherein: the lower surface of the middle fixing part (8) is provided with a dressing support frame (11) connected with a strip shape, the bottom of the dressing support frame (11) is provided with a sliding groove (18) along the long axis direction, the sliding groove (18) is provided with a sliding block (19) in a sliding fit manner, and the bottom of the sliding block (19) is provided with a dressing body (20).

14. The wound closure device of claim 11 or 12, wherein: a through hole (5) which penetrates through the middle of the middle-placed fixing piece (8) up and down is formed in the area corresponding to the wound, a sheet dressing support (21) is arranged on the upper surface of the middle-placed fixing piece (8), and a sticking and fixing layer is arranged on the lower surface of the dressing support (21) corresponding to the solid area of the upper surface of the middle-placed fixing piece (8), so that the dressing support (21) is stuck and fixed with the solid area of the upper surface of the middle-placed fixing piece (8); a dressing body (20) is arranged on the lower surface of the dressing support (21) in a region corresponding to the middle through hole (5) of the middle fixing piece (8), the dressing body (20) penetrates through the through hole (5), and the thickness of the dressing body (20) is larger than the height of the side wall of the through hole (5).

Images