Punching assembly and punching device

Abstract

The present invention belongs to the technical field of medical devices, and specifically relates to a punching assembly and a punching device, wherein the punching device includes a fixing assembly for fixing a wound covering and a punching assembly for punching holes in the wound covering. The punching assembly includes a knife holder, an adjustment plate and a distance locking piece. The knife holder includes a fixed arm for installing a fixed puncture piece and a movable arm for installing a movable puncture piece. One end of the adjustment plate is connected to the fixed arm, and the other end is connected to the movable arm through a distance locking piece. Since the distance locking piece can fix the movable arm at different positions of the adjustment plate to adjust the distance between the fixed puncture piece and the movable puncture piece, the distance between the two can be adjusted as needed. The user can punch holes in the wound covering by holding the punching assembly to obtain a wound covering with evenly distributed holes. The punching device enables one person to complete the punching operation, which is safe and convenient, with uniform hole spacing, and a good appearance effect of the wound covering after surgery.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a punching assembly and a punching device. Background Art

[0002] Various wound coverings are often used in wound repair surgery, including autologous skin, allogeneic skin, xenogeneic skin, artificial dermal scaffolds, and various special dressings. Due to their biological or material properties, these wound coverings are not permeable, which often causes blood and fluid accumulation in the human tissue under the covering and infection. In severe cases, the covering will dissolve and fall off as a whole, resulting in failure of wound repair and even spread of infection and aggravation of the condition. In clinical use, it is necessary to punch holes in various wound coverings to facilitate drainage of blood and fluid accumulation under the covering. The commonly used method is for 2-3 surgical staff to hold or clamp the wound covering, and then puncture the hole with a surgical blade or needle. However, this method is time-consuming and labor-intensive, and there is a risk of stabbing, which is very dangerous. Summary of the invention

[0003] The present invention is made to solve the above-mentioned problem, and its purpose is to provide a punching assembly and a punching device.

[0004] The present invention provides a punching assembly for punching a wound surface covering, having the following characteristics, including: a knife holder, an adjustment plate and a distance locking piece, wherein the knife holder includes a fixed arm for mounting a fixed puncture piece and a movable arm for mounting a movable puncture piece, one end of the adjustment plate is connected to the fixed arm, and the other end is connected to the movable arm through the distance locking piece, and the distance locking piece is used to fix the movable arm at different positions of the adjustment plate so as to adjust the distance between the fixed puncture piece and the movable puncture piece.

[0005] The punching assembly provided by the present invention may also have the following features: wherein the tool holder also includes a connecting arm, the connecting arm, the fixed arm and the movable arm form a U-shaped frame, the U-shaped frame is an integrally formed medical silicone frame, and the movable arm is provided with a locking hole that matches the distance locking piece.

[0006] The punching assembly provided by the present invention may also have the following feature: a plurality of adjustment holes are provided on the adjustment plate along the extension direction of the adjustment plate, and the distance locking piece passes through one of the adjustment holes and is inserted into the locking hole to fix the movable arm at different positions of the adjustment plate.

[0007] The punching assembly provided by the present invention may also have the following feature: an adjustment slot is opened on the adjustment plate along the extension direction of the adjustment plate, and the distance locking piece passes through the adjustment slot and is inserted into the locking hole to fix the movable arm at different positions of the adjustment slot.

[0008] The punching assembly provided by the present invention may also have the following features: a corrugated card plate is provided between the adjustment plate and the distance locking member, the surface where the adjustment plate contacts the corrugated card plate has regular corrugations, and the surface where the corrugated card plate contacts the adjustment plate has corrugations matching the regular corrugations.

[0009] The punching assembly provided by the present invention may also have the following features: there are three tool holders, which are stacked up and down, each tool holder includes a fixed arm and a movable arm, one end of the adjustment plate is connected to the fixed arm of the top tool holder, and the other end is connected to the movable arm of the top tool holder through a distance locking piece, and the distance locking piece is used to fix the movable arm of the top tool holder at different positions of the adjustment plate so as to adjust the distance between the fixed puncture member and the movable puncture member in each tool holder.

[0010] The punching assembly provided by the present invention may also have the following features: one end of the adjustment plate is connected to the fixed arm, and the other end is movably connected to the movable arm, and the distance locking piece passes through the movable arm to fix the movable arm at different positions of the adjustment plate.

[0011] The punching assembly provided by the present invention may also have the following feature: wherein the fixed puncture member and the movable puncture member are detachably connected to the fixed arm and the movable arm respectively.

[0012] The present invention provides a punching device for fixing a wound covering and punching holes in the wound covering, and has the following characteristics: comprising: a fixing component and a punching component, wherein the fixing component is used to fix the wound covering during the punching process, and the punching component is the above-mentioned punching component, which is used to punch holes in the fixed wound covering.

[0013] The punching device provided by the present invention may also have the following features: wherein the fixing assembly includes: a slide rail member, a first movable member, a second movable member, a third movable member and a fixing member, wherein the first movable member is installed on one end of the slide rail member for movement along a first direction, the second movable member is installed on the other end of the slide rail member for movement in a second direction perpendicular to the first direction, the third movable member is installed on the third movable member for movement along the first direction, and the first movable member, the second movable member and the third movable member are all provided with fixing members for fixing the wound covering.

[0014] The punching device provided by the present invention may also have the following feature: wherein the slide rail member, the first movable member, the second movable member and the third movable member are all provided with scales.

[0015] The punching device provided by the present invention may also have the following features: a first locking member is provided at one end of the slide rail member for fixing the slide rail member at a certain position on the first movable member, a second locking member is provided at the other end of the slide rail member for locking the second movable member at a certain position on the slide rail member, and a third locking member is provided on the second movable member for fixing the second movable member at a certain position on the third movable member.

[0016] Functions and Effects of the Invention

[0017] The punching device provided by the present invention comprises a fixing component and a punching component. The fixing component is used to fix the wound surface covering material during the punching process so that it can be conveniently punched when unfolded, and the punching component punches holes in the wound surface covering material fixed by the fixing component.

[0018] The punching assembly includes a knife holder, an adjustment plate and a distance locking piece. The knife holder includes a fixed arm for mounting a fixed puncture piece and a movable arm for mounting a movable puncture piece. One end of the adjustment plate is connected to the fixed arm, and the other end is connected to the movable arm through a distance locking piece. Since the distance locking piece can fix the movable arm at different positions of the adjustment plate to adjust the distance between the fixed puncture piece and the movable puncture piece, the distance between the fixed arm and the movable arm can be adjusted as needed. Then, the user can punch holes in the wound surface covering by holding the punching assembly to obtain a wound surface covering with evenly distributed holes.

[0019] The punching device provided by the present invention can complete the wound covering punching operation by one person, which is safe and convenient, with uniform hole spacing. The appearance of the wound covering after surgery is better, and the uniform punching is more suitable for drainage, which can increase the success rate of the operation and solve the following shortcomings existing in traditional surgery: the drainage holes of the wound covering are small and the drainage is not smooth; the hole spacing is uneven and leakage areas are prone to exist; an assistant is required to tighten the wound covering when punching, which consumes manpower and time and there is a risk of accidentally injuring the assistant, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of an adjustable frame in Embodiment 1 of the present invention;

[0021] Figure 2 is a front view of the adjustable frame in Embodiment 1 of the present invention;

[0022] Figure 3 yes Figure 2 AA section view in;

[0023] Figure 4 is a schematic structural diagram of the towel clip in Embodiment 1 of the present invention;

[0024] Figure 5 is a schematic structural diagram of a punching assembly in Embodiment 1 of the present invention;

[0025] Figure 6 is a schematic structural diagram of a punching assembly in Embodiment 2 of the present invention;

[0026] Figure 7 is a schematic structural diagram of a punching assembly in Embodiment 3 of the present invention;

[0027] Figure 8 yes Figure 7 A partial enlarged view of

[0028] Fig. 9 is a schematic structural diagram of a punching assembly in Embodiment 4 of the present invention;

[0029] Fig.10 is a schematic structural diagram of a punching assembly in Embodiment 5 of the present invention; and

[0030] Fig.11 It is a schematic diagram of the structure of the punching assembly in Example 6 of the present invention. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, a punching assembly and a punching device of the present invention are specifically described below in conjunction with embodiments and drawings.

[0032] <Example 1>

[0033] This embodiment specifically describes a punching device for fixing and punching wound coverings. Wound coverings include autologous skin, allogeneic skin, xenogeneic skin, artificial dermal scaffolds, and various special dressings, which are transplanted onto wounds in human bodies during surgical operations.

[0034] Figure 1 is a schematic diagram of the structure of the adjustable frame in Embodiment 1 of the present invention, Figure 2 is a front view of the adjustable frame in Embodiment 1 of the present invention, Figure 3 yes Figure 2 AA profile in Figure 4 is a schematic structural diagram of the towel clip in Embodiment 1 of the present invention, Figure 5 It is a schematic diagram of the structure of the punching assembly in Example 1 of the present invention.

[0035] like Figure 1-5 As shown, the punching device includes a fixing assembly 100 and a punching assembly 200 .

[0036] The fixing assembly 100 is used to fix the wound surface covering material during the punching process so that it can be conveniently punched when unfolded. The punching assembly 200 is used to punch holes in the wound surface covering material.

[0037] like Figure 1-4 As shown, the fixing assembly 100 is a frame with three sides, including a slide rail member 10, a first moving member 20, a second moving member 30, a third moving member 40, a fixing member and a locking member. The locking member is three tightening bolts with nuts of the same structure, which are marked as a first locking member 61, a second locking member 62 and a third locking member 63 respectively.

[0038] The slide rail 10 is an L-shaped rod composed of a horizontal rod 11 and a vertical rod 12 which are perpendicular to each other, and the horizontal rod 11 and the vertical rod 12 are engraved with scales along their respective length directions. The length direction of the horizontal rod 11 is a first direction, and the length direction of the vertical rod 12 is a second direction.

[0039] A horizontal through hole extending along the length direction of the horizontal rod 11 is provided in the middle thereof for mounting the first moving member 20. A first threaded hole for mounting the first locking member 61 is provided on one side of the horizontal rod 11 away from the second moving member 30.

[0040] The axial direction of the first threaded hole is perpendicular to the axial direction of the horizontal through hole, and the bottom is connected to the horizontal through hole.

[0041] A mounting groove 121 extending along the length direction of the vertical rod 12 is formed in the middle thereof, and a locking member mounting groove 122 extending along the length direction of the vertical rod 12 is formed on the surface thereof for mounting the second locking member 62 .

[0042] The bottom of the locking member installation groove 122 is connected to the installation groove 121 , and the depth direction of the locking member installation groove 122 is perpendicular to the first direction and the second direction respectively.

[0043] Two slots extending along the second direction are also formed inside the vertical rod 12 for installing the second moving member 30 .

[0044] The first moving member 20 includes a first moving rod 21 and a first end stopper 22. In the first direction, the first moving rod 21 and the first end stopper 22 are both engraved with scales. The first end stopper 22 is in a rectangular parallelepiped shape, and its cross-sectional area is larger than that of the first moving rod 21.

[0045] One end of the first moving rod 21 is inserted into the horizontal through hole of the horizontal rod 11 , and the other end is fixedly connected to the first end stopper 22 .

[0046] The first moving rod 21 moves in the horizontal through hole of the horizontal rod 11 . When the first moving rod 21 moves to a certain position, the first locking member 61 is tightened to fix the horizontal rod 11 at the position of the first moving rod 21 .

[0047] The second moving member 30 is in the shape of a cuboid, and one end of the cuboid has two outwardly extending blocks 31 that cooperate with two slots inside the vertical rod 12, so that the second moving member 30 is connected to the vertical rod 12 by snapping and can move up and down along the second direction.

[0048] The second moving member 30 is provided with a second threaded hole at the locking member installation slot 122. The second locking member 62 passes through the locking member installation slot 122 and is inserted into the second threaded hole to fix the second moving member 30 at a certain position of the vertical rod 12.

[0049] A horizontal through hole extending along the length direction of the second moving member 30 is provided in the middle thereof for mounting the first moving member 20. A third threaded hole for mounting the third locking member 63 is provided on one side of the second moving member 30 away from the first horizontal rod 11. The axial direction of the third threaded hole is perpendicular to the axial direction of the horizontal through hole, and the bottom is connected to the horizontal through hole.

[0050] The structure of the third moving member 40 is the same as that of the first moving member 20, and includes a second moving rod 41 and a second end stopper 42. The third moving member 40 is movably mounted on the second moving member 30 via the second moving rod 41.

[0051] The fixing member includes four towel clips 51, which are respectively fixedly mounted on the first end stopper 22, the second end stopper 42, the second moving member 30 and the horizontal rod 11. The plane formed by the four towel clips 51 is within the frame plane. The four corners of the wound cover are respectively fixed on the four towel clips 51.

[0052] The towel clip 51 is in the shape of an 8 as a whole, and is composed of two towel clip arms 511. The tail ends of the two towel clip arms 511 overlap and cross each other in the shape of an 8, and the intersection plays a fixing role to ensure that the top ends can be separated, and the lower part of the intersection of the 8 shape remains fixed. The top ends of the towel clip arms 511 are in the shape of bevel needles to minimize skin damage. The two top ends are separated by hand and passed through the wound cover and then closed to fix the wound cover.

[0053] Figure 5 It is a schematic diagram of the structure of the punching assembly in Example 1 of the present invention.

[0054] like Figure 5 As shown, the punching assembly 200 includes a tool holder 201 , an adjustment plate 202 and a distance locking member 203 .

[0055] The blade holder 201 includes a handle 211 , a connecting arm 212 , a fixed arm 213 , a movable arm 214 , a fixed blade 215 , and a movable blade 216 .

[0056] The connecting arm 212, the fixed arm 213 and the movable arm 214 form an integrally formed U-shaped medical silicone frame. The U-shaped medical silicone frame is elastic and the opening size can be adjusted. The handle 211 is fixedly mounted on the connecting arm 212. The movable arm 214 is provided with a locking hole that matches the distance locking member 203.

[0057] The fixed arm 213 and the movable arm 214 have the same structure, and both have blade installation slots at their ends, which are used to install the fixed blade 215 and the movable blade 216, respectively, so that the blades and the blade holder can be detachably connected. The fixed blade 215 and the movable blade 216 have the same structure, and are both sharp blades.

[0058] Along the extension direction of the adjustment plate 202, a plurality of adjustment holes 221 are evenly distributed on the adjustment plate 202. One end of the adjustment plate 202 is fixed to the fixed arm 213 by a rivet, and the other end is detachably connected to the movable arm 214 by a distance locking member 203.

[0059] The distance locking member 203 is a bolt with a nut, which passes through an adjustment hole 221 and is inserted into a locking hole on the moving arm 214 to fix the moving arm 214 on the adjustment plate 202 .

[0060] Due to the elasticity of the medical silicone frame, the fixed arm 213 and the movable arm 214 can be brought closer to each other, shrinking the size of the opening of the U-shaped frame. When the distance between the fixed blade 215 and the movable blade 216 is appropriate, the distance locking piece 203 is inserted into the corresponding adjustment hole 221 and then tightened.

[0061] This embodiment takes the decellularized matrix as an example to illustrate the method of using the punching device.

[0062] Acellular matrix (ADM) has a three-dimensional mesh structure, which can absorb and gather human cells and use it as a base and scaffold to reproduce and regenerate and promote healing. The effects of ADM on the body include: 1. It can protect ecological tissues to the maximum extent and prevent further deepening of the wound surface; 2. It can induce tissue regeneration, which is conducive to wound healing and shortens the wound healing time. The advantages of using it in patients with large-area burns include: generally advancing the wound healing time; significantly reducing the number of dressing changes, greatly alleviating the pain of patients; ADM has good tissue compatibility and no immune rejection reaction; the use of ADM in the treatment of patients with large-area burns can greatly reduce infection and stress and avoid septic shock. However, during use, it should be noted that the wound surface to be covered with ADM should try to remove the necrotic tissue left on the wound surface and stop bleeding thoroughly to reduce the possibility of fluid accumulation and blood accumulation under ADM.

[0063] Currently, there are four specifications of xenograft "acellular matrix" commonly used in clinical practice, with a fixed width of 10 cm and lengths of 10 cm, 20 cm, 40 cm, and 50 cm respectively.

[0064] The method of using the punching device is as follows:

[0065] 1. Fixing step: According to the specifications of the decellularized matrix, the first movable member 20, the second movable member 30, and the third movable member 40 are adjusted so that the size of the plane formed by the four towel clips 51 matches the size of the decellularized matrix. The beveled needle tips at the top of the four towel clips 51 pass through the four corners of the decellularized matrix respectively, so that the decellularized matrix is ​​fully tightened and unfolded, and the fixing step of the decellularized matrix is ​​completed.

[0066] 2. Punching steps: According to the required punching spacing or the doctor's personal habits, hold the U-shaped frame to adjust the distance between the fixed arm and the movable arm, so that the locking hole on the movable arm corresponds to an adjustment hole on the adjustment plate, and then insert the distance locking piece through the adjustment hole into the locking hole, fix the movable arm on the adjustment plate, complete the distance adjustment between the fixed arm and the movable arm, select the appropriate blade and install it on the fixed arm and the movable arm, and then hold the handle to punch the decellularized matrix.

[0067] In the following embodiments 2-5, the method of using the fixing assembly is the same as that of this embodiment.

[0068] Function and Effect of Example 1

[0069] The punching device provided in this embodiment includes a fixing component and a punching component. The fixing component is used to fix the wound cover during the punching process so that it can be easily punched when unfolded, and the punching component punches holes in the wound cover fixed by the fixing component.

[0070] The whole of the fixed assembly is a frame with three sides composed of a slide rail member, a first moving member, a second moving member and a third moving member, and a fixing member and a locking member are arranged on the frame.

[0071] The slide rail member includes a horizontal rod and a vertical rod that are perpendicular to each other. The first movable member includes a first movable rod and a first end stopper arranged at the end of the first movable rod. The first movable rod passes through a through hole extending along a first direction on the horizontal rod and can move in the through hole to achieve a movable connection with the slide rail member in the first direction. A fixing member is provided on the first end stopper, and a fixing member is also provided on the horizontal rod. With the movement of the first movable rod, the fixing member on the first end stopper moves synchronously. When the distance between the two fixing members is appropriate, the first movable rod is fixed to the horizontal rod by tightening the locking member on the horizontal rod. In addition, there are scales on the first movable rod and the horizontal rod, so the distance between the two fixing members can be easily read.

[0072] Since the second movable member is provided with a fixing member, and the second movable member is connected to the vertical rod by movement along the second direction by means of a card block and a card slot, and can be fixed to a certain position of the vertical rod by a locking member, the distance between the fixing member on the second movable member and the fixing member on the horizontal rod can be adjusted, and since there is a scale on the vertical rod, the distance between the two can be easily read.

[0073] The structure of the third movable member is the same as that of the first movable member, and the connection relationship between the third movable member and the second movable member is the same as the connection relationship between the first movable member and the horizontal rod, so the distance between the fixing member on the third end stop block and the fixing member on the second movable member can be easily adjusted and read.

[0074] The first direction and the second direction are perpendicular to each other, the four fixings form a plane, and the distances between the four fixings can be easily adjusted and read, so they can be easily adjusted to a suitable size to suit wound coverings of different specifications.

[0075] In addition, the head of the towel clip is in the shape of a beveled needle, so it causes little damage to the wound covering.

[0076] In addition, the cross-sectional areas of the first end stopper and the second end stopper are relatively large, so the fixing member can be easily installed.

[0077] The punching assembly provided in this embodiment includes a knife holder, an adjustment plate and a distance locking piece. The knife holder includes a U-shaped frame formed by a connecting arm, a fixed arm and a movable arm, and a knife handle fixedly connected to the connecting arm. The two ends of the connecting arm are respectively connected to the fixed arm and the movable arm, and the material of the U-shaped frame is elastic medical silicone, so when the fixed arm and the movable arm are held and squeezed toward the middle, the opening of the U-shape is reduced, that is, the fixed arm and the movable arm are close to each other. When the distance between the fixed arm and the movable arm is relatively consistent with the expected hole distance on the wound covering, the adjustment plate is covered on the movable arm, and then the size of the U-shaped opening is slightly adjusted so that the axis of the adjustment hole on the adjustment plate is almost coincident with the axis of the locking hole on the movable arm, and then the locking piece is inserted into the adjustment hole and the locking hole is tightened to fix the movable arm to the adjustment plate, and because the other end of the adjustment plate is fixedly connected to the fixed arm by rivets and the outward tension of the U-shaped frame, when the movable arm is fixed, the distance between the fixed arm and the movable arm is fixed. Then install the blade, hold the handle and use the scale on the fixed component as a reference to punch holes in the wound covering, so as to obtain a wound covering with evenly distributed holes.

[0078] <Example 2>

[0079] In this embodiment, the same numbers are given to the same structures as those in Embodiment 1. These structures have the same functions and effects as those in Embodiment 1 and are not described in detail here.

[0080] The punching device of this embodiment includes a fixing assembly 100 and a punching assembly 300. The structure of the fixing assembly 100 is the same as that of the embodiment 1 and will not be described in detail herein.

[0081] Figure 6 It is a schematic diagram of the structure of the punching assembly in Example 2 of the present invention.

[0082] like Figure 6 As shown, the punching assembly 300 includes a tool holder 201 , an adjustment plate 302 and a distance locking member 203 .

[0083] One end of the adjustment plate 302 is fixed to the fixed arm 213 by a rivet, and the other end is detachably connected to the movable arm 214 by a distance locking member 203. Along the extension direction of the adjustment plate 302, an adjustment slot 303 is opened in the middle of the adjustment plate 302 and runs through from top to bottom. The length of the adjustment slot 303 is less than the length of the adjustment plate 302, and the slot width is equal to the diameter of the locking hole on the movable arm 214.

[0084] Hold the U-shaped frame, due to the elasticity of the medical silicone material, the fixed arm 213 and the movable arm 214 are close to each other. When the distance between the fixed arm 213 and the movable arm 214 is appropriate, the distance locking piece 203 is inserted into the locking hole through the adjustment groove 303, and then tightened to fix the movable arm 214 on the adjustment plate 302. At this time, the distance between the fixed arm 213 and the movable arm 214 is fixed, and the nut of the distance locking piece 203 is in close contact with the upper surface of the adjustment groove 303. Finally, appropriate blades are installed on the fixed arm 213 and the movable arm 214 respectively.

[0085] Function and Effect of Example 2

[0086] The punching device provided in this embodiment includes a fixing assembly and a punching assembly. Since the structure of the fixing assembly is the same as that of the fixing assembly in Embodiment 1, its function and effect are also the same, and will not be described in detail here.

[0087] The punching assembly provided in this embodiment includes a tool holder, an adjustment plate and a distance locking member.

[0088] The tool holder in this embodiment has the same structure as the tool holder in Embodiment 1, and therefore has the same functions and effects, which will not be described in detail here.

[0089] The middle of the adjustment plate in this embodiment is provided with an adjustment slot that runs through the upper and lower parts in the same direction as the extension of the adjustment plate 302. The length of the adjustment slot is less than the length of the adjustment plate, and the slot width is equal to the diameter of the locking hole on the movable arm, so the bolt of the distance locking member can slide arbitrarily in the adjustment slot. When the distance between the fixed arm and the movable arm is adjusted to be appropriate, the distance locking member passes through the adjustment slot and is inserted into the locking hole to fix the movable arm on the adjustment plate. Since one end of the adjustment plate is fixedly connected to the fixed arm of the knife holder by rivets, the bolt of the distance locking member can slide arbitrarily in the adjustment slot, so the distance between the fixed arm and the movable arm can be adjusted at will. When the movable arm is fixed on the adjustment plate, the outward tension of the U-shaped frame and the fixation of the locking member make the distance between the two no longer change, so the distance between the fixed blade and the movable blade no longer changes. Then, the wound covering can be punched by holding the knife handle and using the scale on the fixed component as a reference to obtain a wound covering with evenly distributed holes.

[0090] <Example 3>

[0091] In this embodiment, the same numbers are given to the same structures as those in Embodiments 1 and 2. These structures have the same functions and effects as those in Embodiment 2 and are not described in detail here.

[0092] The punching device of this embodiment includes a fixing assembly 100 and a punching assembly 400. The structure of the fixing assembly 100 is the same as that of the embodiment 1 and will not be described in detail herein.

[0093] Figure 7 is a schematic structural diagram of the punching assembly in Example 3; Figure 8 yes Figure 7 A partial enlarged view of .

[0094] like Figure 7 , 8 As shown, the punching assembly 400 of the punching assembly 300 includes a tool holder 201 , an adjustment plate 401 , a distance locking member 203 and a corrugated card plate 402 .

[0095] One end of the adjustment plate 401 is fixed to the fixed arm 213 by a rivet, and the other end is detachably connected to the movable arm 214 by a distance locking member 203. Along the extension direction of the adjustment plate 401, an adjustment slot 403 is opened in the middle of the adjustment plate 401 and runs through from top to bottom. The length of the adjustment slot 403 is less than the length of the adjustment plate 401, and the slot width is equal to the diameter of the locking hole on the movable arm 214.

[0096] The upper surface of the adjustment plate 401 contacts the lower surface of the corrugated card plate 402. The upper surface of the adjustment plate 401 is engraved with regular corrugations 404, and the lower surface of the corrugated card plate 402 has corrugations matching the regular corrugations 404. The corrugated card plate 402 is also provided with a card plate through hole, the diameter of which is equal to the diameter of the locking hole.

[0097] When the distance between the fixed arm 213 and the movable arm 214 is adjusted to be appropriate, the corrugated card plate 402 is moved so that the card plate through hole and the locking hole form a through passage, and the distance locking member 203 is passed through the card plate through hole and the locking hole, and the movable arm 214 is fixed to the adjustment plate 401 after being tightened. At this time, the adjustment plate 401 and the corrugated card plate 402 are clamped together through the upper and lower corrugations. Then, a blade is installed, and the wound cover can be punched by holding the knife handle with the scale on the fixed component as a reference to obtain a wound cover with evenly distributed holes.

[0098] Function and Effect of Example 3

[0099] The punching device provided in this embodiment includes a fixing assembly and a punching assembly. Since the structure of the fixing assembly is the same as that of the fixing assembly in Embodiment 1, its function and effect are also the same, and will not be described in detail here.

[0100] The punching assembly of this embodiment includes a knife holder, an adjustment plate, a distance locking member and a corrugated card plate. The knife holder and the distance locking member have the same structure as the knife holder in embodiment 2, so their functions and effects are also the same, which will not be repeated here.

[0101] Compared with the adjusting plate in Example 2, the adjusting plate in this embodiment has regular corrugations on its surface, and the rest of the structure is the same as that of the adjusting plate in Example 2, so it has the same function and effect. In addition, because the regular corrugations match the corrugations on the corrugated card plate, the friction force can be increased when the two are clamped together by the corrugations, so when the distance locking member fixes the moving arm on the adjusting plate, the fixation is more secure.

[0102] <Example 4>

[0103] In this embodiment, the same numbers are given to the same structures as those in Embodiment 1. These structures have the same functions and effects as those in Embodiment 1 and are not described in detail here.

[0104] The punching device of this embodiment includes a fixing assembly 100 and a punching assembly 500. The structure of the fixing assembly 100 is the same as that of the embodiment 1 and will not be described in detail herein.

[0105] Fig. 9 It is a schematic diagram of the structure of the punching assembly in Example 4 of the present invention.

[0106] like Fig. 9 As shown, the punching assembly 500 includes a tool holder 501 , an adjustment plate 502 and a distance locking member 203 .

[0107] The tool holder 501 includes a tool handle 511, a fixed arm 512 and a movable arm 513. The tool handle 511 is fixedly mounted on one end of the movable arm 513.

[0108] The movable arm 513 has a transverse through hole and a locking hole. The transverse through hole extends along the width direction of the movable arm 513. The locking hole is connected to the transverse through hole, and its axis is perpendicular to the extending direction of the transverse through hole.

[0109] The ends of the fixed arm 512 and the movable arm 513 are both provided with blade mounting grooves for mounting the fixed blade 215 and the movable blade 216 respectively, so that the blades are detachably connected to the blade holder.

[0110] One end of the adjustment plate 502 is fixedly connected to the fixed arm 512, and the other end passes through the transverse through hole on the movable arm 513 to be movably connected thereto. The adjustment plate 502 moves in the transverse through hole, driving the fixed arm 512 to approach or move away from the movable arm 513. When the distance between the two is appropriate, the distance locking member 203 is inserted into the locking hole and tightened to fix the movable arm 513 on the adjustment plate 502. Then, the fixed blade 215 and the movable blade 216 are installed on the fixed arm 512 and the movable arm 513 respectively.

[0111] In this embodiment, the material of the blade holder 501 and the adjustment plate 502 is medical silicone. In practical applications, materials such as rubber, plastic, and metal can be selected.

[0112] Function and Effect of Example 4

[0113] The punching device provided in this embodiment includes a fixing assembly and a punching assembly. Since the structure of the fixing assembly is the same as that of the fixing assembly in Embodiment 1, its function and effect are also the same, and will not be described in detail here.

[0114] The punching assembly includes a knife holder, an adjustment plate and a distance locking member, and the knife holder includes a knife handle, a fixed arm and a movable arm. One end of the adjustment plate is fixedly connected to the fixed arm, and the other end can pass through the transverse through hole on the movable arm, so that the distance between the fixed arm and the movable arm can be adjusted as needed, thereby adjusting the distance between the fixed blade and the movable blade. When the distance between the two meets the distance between the holes to be punched on the wound cover, the movable arm is fixed to the adjustment plate with the distance locking member, and then the knife handle is held by hand and the scale on the fixed assembly is used as a reference to punch holes in the wound cover, so as to obtain a wound cover with evenly distributed holes.

[0115] <Example 5>

[0116] In this embodiment, the same numbers are given to the same structures as those in Embodiment 1. These structures have the same functions and effects as those in Embodiment 1 and are not described in detail here.

[0117] The punching device of this embodiment includes a fixing assembly 100 and a punching assembly 600. The structure of the fixing assembly 100 is the same as that of the embodiment 1 and will not be described in detail herein.

[0118] Fig.10 It is a schematic diagram of the structure of the punching assembly in Example 5 of the present invention.

[0119] like Fig.10 As shown, the punching assembly 600 includes three tool holders, an adjustment plate 202 and a distance locking member 203 .

[0120] Three tool holders are stacked up and down, and are marked as 201a, 201b and 201c respectively. The three tool holders share a handle 211, and the rest of the structure is the same as the structure of the tool holder 201 in Example 1. The handle 211 is fixedly connected to the connecting arm 212 of the tool holder 201b in the middle. The tool holders 201a, 201b and 201c are connected together by three connecting columns 601, and the tool holder on the top layer is the tool holder 201a. The connecting column 601 extends from the lower surface of the tool holder 201a through the tool holder 201b, and then is fixedly connected to the tool holder 201c.

[0121] One end of the adjustment plate 202 is fixed to the fixed arm 213 of the tool holder 201 a by rivets, and the other end is detachably connected to the movable arm 214 of the tool holder 201 a by a distance locking member 203 .

[0122] Due to the elasticity of the medical silicone frame, the size of the U-shaped opening can be adjusted by holding the U-shaped frame of the knife holder 201a, thereby driving the size of the U-shaped openings in the knife holders 201b and 201c to change. When the distance between the three sets of fixed arms and the movable arm is appropriate, the distance locking member 203 is inserted into the locking hole of the movable arm 214 of the knife holder 201a after passing through an adjustment hole 221 on the adjustment plate 202, and then the movable arm 214 is tightened to fix it on the adjustment plate 202. Finally, the blades are fully or partially installed on the three sets of fixed arms and the movable arm.

[0123] Function and Effect of Example 5

[0124] The punching device provided in this embodiment includes a fixing assembly and a punching assembly. Since the structure of the fixing assembly is the same as that of the fixing assembly in Embodiment 1, its function and effect are also the same, and will not be described in detail here.

[0125] The punching assembly includes three stacked tool holders, each of which has a fixed arm and a movable arm. Therefore, the punching assembly has three sets of fixed arms and movable arms, so that up to three sets of blades can be installed. The adjustment plate drives the change of the distance between the other two sets of fixed arms and movable arms by adjusting the distance between the top set of fixed arms and movable arms. Therefore, the adjustment plate can adjust the distance between the three sets of fixed arms and movable arms at one time, and the distance between the blades installed thereon also changes, which is very convenient. After the distance adjustment is completed, the wound covering can be punched by holding the knife handle and using the scale on the fixed assembly as a reference to obtain a wound covering with evenly distributed holes. Since there are multiple blades on the knife holder, when holding the knife handle to puncture the wound covering, multiple holes can be punctured at one time, saving punching time.

[0126] <Example 6>

[0127] In this embodiment, the same numbers are given to the same structures as those in Embodiments 2 and 5. These structures have the same functions and effects as those in Embodiment 1 and are not described in detail here.

[0128] The punching device of this embodiment includes a fixing assembly 100 and a punching assembly 700. The structure of the fixing assembly 100 is the same as that of the embodiment 1 and will not be described in detail herein.

[0129] Fig.11 It is a schematic diagram of the structure of the punching assembly in Example 6 of the present invention.

[0130] like Fig.11 As shown, the punching assembly 700 includes three tool holders, an adjustment plate 302 and a distance locking member 203 .

[0131] The structure and stacking method of the three tool holders are the same as those in Example 5 and will not be described in detail here.

[0132] One end of the adjustment plate 302 is fixed to the fixed arm 213 of the tool holder 201 a by a rivet, and the other end is detachably connected to the movable arm 214 of the tool holder 201 a by a distance locking member 203 .

[0133] Due to the elasticity of the medical silicone frame, the size of the U-shaped opening can be adjusted by holding the U-shaped frame of the knife holder 201a, thereby driving the size of the U-shaped openings in the knife holders 201b and 201c to change. When the distance between the three sets of fixed arms and the movable arm is appropriate, the distance locking member 203 is inserted into the locking hole of the movable arm 214 of the knife holder 201a through the adjustment slot 303, and then the movable arm 214 is tightened to fix it on the adjustment plate 302. Finally, the blades are fully or partially installed on the three sets of fixed arms and the movable arm.

[0134] Function and Effect of Example 6

[0135] The punching device provided in this embodiment includes a fixing assembly and a punching assembly. Since the structure of the fixing assembly is the same as that of the fixing assembly in Embodiment 1, its function and effect are also the same, and will not be described in detail here.

[0136] The tool holder part in this embodiment is the same as that in embodiment 5, and therefore has the functions and effects of the tool holder part in embodiment 5, while the structure of the adjustment plate is the same as that in embodiment 1, and therefore has the functions and effects of the adjustment plate in embodiment 1.

[0137] In the above embodiments 1-6, the puncture member is a sharp blade. In practical applications, the puncture member can be a thick needle. The punching assembly with a thick needle is used to punch holes in autologous skin and a small area of ​​decellularized matrix; the punching assembly with a sharp blade is used to punch holes in acellular matrix.

[0138] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A punching assembly for punching holes in a wound covering, characterized in that: include: Tool holder, adjustment plate and distance locking parts, The knife holder includes a fixed arm for mounting a fixed puncture member, a movable arm for mounting a movable puncture member, and a connecting arm. The connecting arm, the fixed arm, and the movable arm form a U-shaped frame, which is an integrally formed medical silicone frame. One end of the adjustment plate is connected to the fixed arm, and the other end is connected to the movable arm through the distance locking member. The distance locking member is used to fix the movable arm at different positions of the adjustment plate so as to adjust the distance between the fixed piercing member and the movable piercing member. The movable arm is provided with a locking hole matched with the distance locking member. The end of the fixed arm and the end of the movable arm are provided with blade installation grooves, which are used for installing a fixed blade and a movable blade respectively.

2. The punching assembly according to claim 1, characterized in that: in, A plurality of adjustment holes are arranged on the adjustment plate along the extension direction of the adjustment plate, and the distance locking member passes through one of the adjustment holes and is inserted into the locking hole so as to fix the moving arm at different positions of the adjustment plate.

3. The punching assembly according to claim 1, characterized in that: in, An adjustment slot is formed on the adjustment plate along the extension direction of the adjustment plate. The distance locking member passes through the adjustment slot and then is inserted into the locking hole, thereby fixing the movable arm at different positions of the adjustment slot.

4. The punching assembly according to claim 3, characterized in that: in, A corrugated card plate is provided between the adjusting plate and the distance locking member. The surface of the adjustment plate in contact with the corrugated cardboard has regular corrugations, and the surface of the corrugated cardboard in contact with the adjustment plate has corrugations matching the regular corrugations.

5. The punching assembly according to claim 1, characterized in that: in, There are three tool holders, which are stacked up and down, and each tool holder includes a fixed arm and a movable arm. One end of the adjustment plate is connected to the fixed arm of the uppermost tool holder, and the other end is connected to the movable arm of the uppermost tool holder through the distance locking member. The distance locking member is used to fix the movable arm of the uppermost blade holder at different positions of the adjustment plate so as to adjust the distance between the fixed piercing member and the movable piercing member in each blade holder.

6. The punching assembly according to claim 1, characterized in that: in, One end of the adjustment plate is connected to the fixed arm, and the other end is movably connected to the movable arm. The distance locking member passes through the moving arm to fix the moving arm at different positions of the adjusting plate.

7. The punching assembly according to claim 1, characterized in that: in, The fixed puncture member and the movable puncture member are detachably connected to the fixed arm and the movable arm respectively.

8. A punching device for fixing a wound covering and punching holes in the wound covering, characterized in that: include: Fixing components and punching components, The fixing assembly is used to fix the wound covering during the drilling process. The punching assembly is the punching assembly according to any one of claims 1 to 7, and is used to punch holes in the fixed wound cover.

9. The punching device according to claim 8, characterized in that: in, The fixing assembly comprises: A slide rail, a first moving part, a second moving part, a third moving part and a fixed part, Wherein, the first moving member is mounted on one end of the slide rail member for movement along the first direction, The second moving member is mounted on the other end of the slide rail member for movement in a second direction perpendicular to the first direction. The third moving member is mounted on the third moving member for movement along the first direction. The first moving member, the second moving member and the third moving member are all provided with fixing members for fixing the wound surface covering.

10. The punching device according to claim 9, characterized in that: in, The slide rail member, the first moving member, the second moving member and the third moving member are all provided with scales.

11. The punching device according to claim 9, characterized in that: in, A first locking member is provided at one end of the slide rail member for fixing the slide rail member at a certain position on the first moving member. A second locking member is provided at the other end of the slide rail member for locking the second moving member at a certain position on the slide rail member. The second moving member is provided with a third locking member for fixing the second moving member at a certain position on the third moving member.

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