CN220459382U - Skin suture device with preset position - Google Patents

Abstract

The utility model relates to the technical field of anastomat, in particular to a pre-positioning skin suture device, which comprises a suture device shell and a handle rotatably arranged in the suture device shell, wherein a nail pressing mechanism is arranged at the end part of the suture device shell, a nail is arranged in the nail pressing mechanism, the nail pressing mechanism comprises a mounting seat, a nail pressing plate is slidably arranged on the mounting seat, one end of the nail pressing plate is abutted against the nail, a limiting plate is rotatably arranged outside the handle, a limiting gear assembly is arranged in the suture device shell, the end part of the limiting plate is abutted against the nail pressing plate, the end part of the other end of the limiting plate is abutted against the limiting gear assembly, and the limiting gear assembly enables the abutting of the limiting plate against the nail pressing plate to be in a half-pressing state or a full-pressing state; the limiting gear assembly comprises a fixed shaft fixedly connected in the stitching instrument shell, a driving gear and a driven gear are rotatably arranged on the fixed shaft, the driven gear rotates unidirectionally along with the driving gear, the driven gear is a half gear, and the limiting plate is abutted on teeth of the driven gear.

Description

Skin suture device with preset position

Technical Field

The utility model relates to the technical field of anastomat, in particular to a pre-positioning skin suture device.

Background

The skin anastomat is mainly used for suturing skin incisions in various surgical operations, the working principle is similar to a stapler principle, the skin incisions can be independently operated by a single person, forceps are adopted to lift the skin incisions during suturing, then the skin anastomat is used for firing the suturing nails onto the skin incisions, so that wound suturing can be rapidly completed, and the skin anastomat has the advantages of simplicity in operation, high suturing speed, good postoperative incision healing, attractive and tidy wound and the like, and can greatly shorten the skin suturing time during the operation; however, because the skin tissue is thinner, when an operator directly lifts the skin incision by using forceps, the incision cannot be adjusted, and further, the situation that the incision is misplaced easily occurs, so that the incision is skewed after suturing or the suturing is uneven, and the wound healing is affected.

In order to solve the technical problem, chinese patent CN102988091a discloses a connecting rod triggering type disposable skin stapler, which comprises a housing, a triggering handle, a nail pressing forming mechanism and a nail pushing mechanism for enabling a nail to be located at a triggering position, wherein the nail pressing forming mechanism comprises a nail pressing block, a reset spring for enabling the nail pressing block to reset automatically, a nail pushing plate with a nail forming groove and a forming plate matched with the nail forming groove for enabling the nail to be formed, the triggering handle is hinged on the housing, a guide groove is formed in the housing, the nail pushing plate is slidably installed in the guide groove, the front end of the nail pressing block is abutted against the nail pushing plate, one end of the reset spring is abutted against the housing, the other end of the reset spring is abutted against the nail pressing block, the disposable skin stapler further comprises a connecting rod, one end of the connecting rod is hinged at the tail of the nail pressing block, and the other end of the connecting rod is hinged on the triggering handle. The above patent adopts the mode of quick percussion, has improved the accuracy and the stability that the wound was sewed up, but the incision still can't be adjusted to the process that the wound was sewed up, leads to the incision dislocation easily.

Therefore, when an operator directly lifts the skin incision by using forceps, the skin suture device provides a pre-clamping effect on the incision, is convenient for adjusting the incision, and ensures the accuracy and stability of wound suture.

Disclosure of Invention

The utility model aims to provide a pre-positioning skin suture device, which solves the technical problems that in the prior art, a skin incision is directly lifted by forceps and is sutured, the incision can not be adjusted, and further the incision dislocation is easy to occur.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a predetermined skin stapler, includes the stapler shell and rotationally sets up the handle in the stapler shell, stapler shell tip is equipped with presses the nail mechanism, presses the nail mechanism to be equipped with the anastomat in, press the nail mechanism to include the mount pad, is equipped with the pressure nail board on the mount pad slidably, presses nail board one end butt anastomat, the handle is equipped with the limiting plate outward rotationally, is equipped with spacing gear assembly in the stapler shell, limiting plate tip butt pressure nail board, limiting plate other end tip butt spacing gear assembly, spacing gear assembly makes the limiting plate to pressing the butt of nail board be in half-press state or full-press state; the limiting gear assembly comprises a fixed shaft fixedly connected in the stitching instrument shell, a driving gear and a driven gear are rotatably arranged on the fixed shaft, the driven gear rotates unidirectionally along with the driving gear, the driven gear is a half gear, and the limiting plate is abutted on teeth of the driven gear.

Further, the limiting plate end is provided with an opening, the opening extends inwards from the end face of the limiting plate, the opening penetrates through the upper face and the lower face of the limiting plate, the opening separates the end of the limiting plate into two symmetrical abutting teeth, and a plurality of driving teeth are arranged on the side wall, close to the opening, of the handle.

Further, the driven gears are arranged at two sides of the driving gear symmetrically, the driving gear faces the opening and is meshed with the driving teeth, and the driven gears are meshed with the abutting teeth.

Further, a ratchet wheel is arranged on the fixed shaft, a pawl is arranged on the driven gear, and the pawl is abutted against the ratchet wheel.

Further, a first linkage groove is formed in the driving gear, a second linkage groove is formed in the driven gear, a linkage rod is rotatably arranged in the first linkage groove, a part of side wall of the linkage rod is abutted to the side wall of the first linkage groove, the other part of side surface of the linkage rod is abutted to the side wall of one side of the second linkage groove, and the end part of the linkage rod is telescopically arranged in the second linkage groove.

Further, the driven gear is divided into a gear part and a toothless part, the gear part and the toothless part are alternately arranged, the gear part is meshed with the abutting teeth, and a gap is formed between the toothless part and the abutting teeth.

Further, a rotating shaft is arranged at one end of the handle, the limiting plate is rotatably sleeved on the rotating shaft, the top surface of the handle is of a herringbone structure, the outline of the limiting plate is consistent with that of the top surface of the handle, and one end, far away from the rotating shaft, of the limiting plate is lapped on the handle.

Further, the nail pressing mechanism is provided with a rotating hole, and the rotating shaft on the handle is rotatably arranged in the rotating hole.

Further, the mounting seat is provided with a mounting cavity, the mounting cavity is of a groove structure with one surface open, and an elastic piece is arranged in the mounting cavity.

Further, the nail pressing plate is of an L-shaped structure, a pushing plane is formed on the nail pressing plate, the end part of the limiting plate is abutted against the outer wall of the pushing plane, one end of the elastic piece is abutted against the bottom wall of the mounting cavity, and the other end of the elastic piece is abutted against the inner wall of the pushing plane.

The beneficial effects of the utility model are as follows: according to the utility model, the limiting plate is arranged on the handle, and the limiting gear assembly is arranged at the end part of the limiting plate and used for positioning the limiting plate; when suturing the incision, the utility model firstly bends the anastomat to a certain angle and keeps the anastomat motionless, and the anastomat clamps the skin incision but does not penetrate the skin incision at the moment, so that an operator can conveniently adjust the skin incision, keep the skin incision tidy, facilitate the subsequent recovery, press down the handle after the incision is tidy, further bend the anastomat and penetrate the skin incision, and complete the wound suturing.

Drawings

Fig. 1 is a perspective view of a pre-positioning skin stapler of the present utility model.

Fig. 2 is a front cross-sectional view of the pre-positioned skin stapler of the present utility model.

Fig. 3 is an enlarged partial schematic view of the portion a in fig. 2.

Fig. 4 is a schematic illustration of fig. 1 with the stapler housing 10 and stapling mechanism 20 omitted.

Fig. 5 is a front cross-sectional view of the pre-positioning skin stapler of the present utility model (pre-positioning state).

Fig. 6 is a front cross-sectional view (positioned state) of the pre-positioning skin stapler of the present utility model.

Fig. 7 is a front sectional view (suture state) of the skin suture apparatus of the present utility model.

Fig. 8 is a partially enlarged schematic view of the portion B in fig. 4.

Fig. 9 is a perspective view of a stop gear assembly in a pre-positioning skin stapler of the present utility model.

Fig. 10 is an exploded view of the stop gear assembly of the pre-positioning skin stapler of the present utility model.

Fig. 11 is a front view of a stop gear assembly in a pre-positioning skin stapler of the present utility model.

Fig. 12 is a cross-sectional view taken along A-A in fig. 11.

The components in the drawings are marked as follows: 10. a stapler housing; 11. a handle; 110. a rotating shaft; 12. a limiting plate; 13. abutment teeth; 14. an opening; 15. a drive tooth; 20. a nail pressing mechanism; 21. a nail pressing plate; 22. a mounting base; 23. an elastic member; 24. pushing against the plane; 25. a mounting cavity; 31. a staple; 40. a limit gear assembly; 41. a fixed shaft; 42. a drive gear; 43. a driven gear; 44. a ratchet wheel; 45. a pawl; 46. a linkage rod; 47. a first linkage groove; 48. a second linkage groove;

Detailed Description

The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.

Referring to fig. 1 and 2, the present utility model provides a pre-positioning skin stapler, comprising a stapler housing 10 and a handle 11 rotatably disposed in the stapler housing 10, wherein a stapling mechanism 20 is disposed at an end of the stapler housing 10, and staples 31 are disposed in the stapling mechanism 20; when in use, the handle 11 is pressed, the nail pressing mechanism 20 is driven to press the anastomat 31 and deform and bend the anastomat 31, so that the suturing of the wound is realized. It can be appreciated that the specific working mode of the stapling mechanism 20 may be a specific stapling mode of a staple holder disclosed in a skin stapler with multiple protection devices, which is disclosed in publication No. CN211484737U, and the specific working mode will not be described herein.

It may be appreciated that the staple pressing mechanism 20 is further provided with a staple cartridge, and the staple cartridge adopted in the present utility model is mainly used for conveying the staples 31 into the staple pressing mechanism 20, where the staple cartridge is a staple 31 conveying device commonly used in the market, and includes a conveying track (not shown), a pushing mechanism (not shown) and springs (not shown), the staples 31 are provided with a plurality of staples and are uniformly arranged in the conveying track, the pushing mechanism abuts against the staples 31, and when in use, the springs are used to drive the pushing mechanism to push the staples 31 to move, so as to realize uninterrupted conveying of the staples 31, and the specific structure will not be repeated herein.

Further, referring to fig. 2, 3 and 4, the nail pressing mechanism 20 includes a mounting seat 22, a nail pressing plate 21 is slidably disposed on the mounting seat 22, one end of the nail pressing plate 21 abuts against the staples 31, a limiting plate 12 is mounted outside the handle 11, and an end of the limiting plate 12 abuts against the other end of the nail pressing plate 21. When in use, the handle 11 is rotated, the limiting plate 12 rotates along with the handle, and then the pressing plate 21 is abutted to move, so that the staples 31 are pushed and bent.

Specifically, one end of the handle 11 is provided with a rotating shaft 110, the limiting plate 12 is rotatably sleeved on the rotating shaft 110, the top surface of the handle 11 is in a herringbone structure, the contour of the limiting plate 12 is consistent with that of the top surface of the handle 11, and one end, far away from the rotating shaft 110, of the limiting plate 12 is lapped on the handle 11; when the anti-clockwise rotation handle 11 is rotated clockwise, the limiting plate 12 falls back by means of self weight, and the anti-clockwise rotation handle 11 is rotated clockwise.

Further, the nail pressing mechanism 20 is provided with a rotating hole (not shown), and the rotating shaft 110 on the handle 11 is rotatably arranged in the rotating hole; the mounting seat 22 is provided with a mounting cavity 25, the mounting cavity 25 is of a groove structure with one surface open, and an elastic piece 23 is arranged in the mounting cavity 25; the nail pressing plate 21 is of an L-shaped structure, a pushing plane 24 is formed on the nail pressing plate 21, the end part of the limiting plate 12 is abutted against the outer wall of the pushing plane 24, one end of the elastic piece 23 is abutted against the bottom wall of the mounting cavity 25, and the other end of the elastic piece 23 is abutted against the inner wall of the pushing plane 24. Preferably, the elastic member 23 includes, but is not limited to, a spring.

During the use, manual pressure handle 11 for handle 11 rotates along changeing the hole, and then makes handle 11 drive limiting plate 12 butt press the pushing plane 24 on the nail board 21, and pushes away nail board 21 and move downwards, at this moment, elastic component 23 receives the compression and accumulates elastic potential energy, when the external force that handle 11 received removes, elastic component 23 releases elastic potential energy, and then pushes away nail board 21 and upwards moves, and limiting plate 12 tip receives elastic potential energy to be clockwise rotation, in order to realize the reset to nail board 21.

As can be appreciated, when the handle 11 is manually pressed, the handle 11 rotates counterclockwise, and the limiting plate 12 pushes the stapling press plate 21 to move downward; when the handle 11 is manually released, the handle 11 rotates clockwise, and the staple pressing plate 21 moves upward under the elastic potential energy of the elastic member 23, thereby completing the firing of the staples.

Referring to fig. 4, 8, 9, 10 and 12, a limiting gear assembly 40 is disposed in the stapler housing 10, and an end of the limiting plate 12 abuts against the limiting gear assembly 40. The limiting gear assembly 40 is used for limiting the position of the limiting plate 12 in the stapler housing 10, so that the pressing of the limiting plate 12 against the stapling plate 21 is in a half-pressing state or a full-pressing state.

Further, the end of the limiting plate 12 is provided with an opening 14, the opening 14 extends inwards from the end surface of the limiting plate 12, the opening 14 penetrates through the upper surface and the lower surface of the limiting plate 12, and the opening 14 divides the end of the limiting plate 12 into two symmetrical abutting teeth 13. The handle 11 is provided with a plurality of drive teeth 15 on the side wall adjacent the opening 14.

Further, the limiting gear assembly 40 includes a fixed shaft 41 fixedly connected in the suture device casing 10, a driving gear 42 is rotatably disposed on the fixed shaft 41, driven gears 43 are rotatably disposed on both sides of the driving gear 42 on the fixed shaft 41, the driven gears 43 rotate unidirectionally along with the driving gear 42, the driving gear 42 faces the opening 14 and is engaged with the driving teeth 15, and the driven gears 43 are engaged with the abutting teeth 13.

When the handle 11 is used, the handle rotates anticlockwise, the driving teeth 15 are meshed with the driving gear 42 and drive the driving gear 42 to rotate, and the limiting plate 12 rotates along with the driving gear and pushes against the nail pressing plate 21; after the staples 31 are bent by a certain angle, the handle 11 is rotated clockwise, the driving teeth 15 are meshed with the driving gear 42 and drive the driving gear 42 to rotate reversely, the abutting teeth 13 on the limiting plate 12 abut against the driven gear 43, so that the limiting plate 12 cannot move continuously, the handle 11 can move continuously, at the moment, the limiting plate 12 abuts against the staple pressing plate 21, the staple pressing plate 21 bends the staples 31 by a certain angle and keeps the staples still, and the limiting plate 12 is tightly pressed on the driven gear 43 under the influence of the elastic potential energy of the elastic piece 23 in the staple pressing mechanism 20, so that the limiting effect of the limiting plate 12 and the pre-positioning effect of the utility model are realized.

When the utility model is used for suturing the incision, the anastomat 31 can be bent to a certain angle and kept still, at the moment, the anastomat 31 clamps the skin incision but does not penetrate through the skin incision, and the limiting plate 12 is in a half-pressing state on the nail pressing plate 21, so that an operator can conveniently adjust the skin incision, keep the skin incision neat and facilitate subsequent recovery, after the adjustment is neat, the handle 11 is pressed down, the anastomat 31 is further bent and penetrates through the skin incision, and wound suturing is completed.

Referring to fig. 8 to 12, the driving gear 42 and the driven gear 43 are rotatably disposed on the fixed shaft 41 by bearings, a ratchet 44 is disposed on the fixed shaft 41, a pawl 45 is disposed on the driven gear 43, and the pawl 45 abuts against the ratchet 44. In use, the driven gear 43 can only rotate unidirectionally by utilizing the cooperation of the ratchet wheel 44 and the pawl 45.

Further, the driving gear 42 is provided with a first linkage groove 47, the driven gear 43 is provided with a second linkage groove 48, a linkage rod 46 is rotatably arranged in the first linkage groove 47, a part of the side wall of the linkage rod 46 is abutted against the side wall of the first linkage groove 47, and the other part of the side surface of the linkage rod 46 is abutted against the side wall of the second linkage groove 48. The end of the link rod 46 is telescopically disposed within a second link slot 48.

When the handle 11 is rotated anticlockwise, the driving gear 42 rotates clockwise, part of the side wall of the linkage rod 46 abuts against the side wall of the first linkage groove 47, the other part of the side wall of the linkage rod 46 abuts against the side wall of the second linkage groove 48, synchronous rotation of the driving gear 42 and the driven gear 43 is achieved, after the anastomotic nail 31 is bent to a certain angle, the handle 11 is loosened, the handle 11 is rotated clockwise, the driving gear 42 rotates anticlockwise, one end of the linkage rod 46 rotates in the first linkage groove 47, the other end of the linkage rod 46 is separated from the second linkage groove 48 and abuts against the side wall of the driven gear 43, at the moment, the driven gear 43 stops rotating and is matched with the pawl 45 at the ratchet wheel 44, and the driven gear 43 receives the limiting plate 12 to complete limiting.

As will be appreciated, the linkage rod 46 is configured to drive the driven gear 43 to follow the clockwise rotation of the driving gear 42 and to rest when the driving gear 42 is rotated counterclockwise. In other embodiments, the linkage rod 46 may be replaced with a common ratchet mechanism.

In this embodiment, the driven gear 43 is a half gear, that is, a part of the gear is missing, the limiting plate 12 abuts against a gear portion of the driven gear 43, and when the driven gear 43 rotates, the limiting plate 12 and the driven gear 43 are in an abutting state and a falling state.

Specifically, during stitching (see fig. 5 and 6), the handle 11 rotates counterclockwise, the limiting plate 12 rotates along with it, at this time, the gear portion of the driven gear 43 faces the limiting plate 12 and is meshed with the abutment teeth 13 at the end of the limiting plate 12, at this time, the handle 11 is released, so that the handle 11 rotates counterclockwise, and the limiting plate 12 abuts against the gear portion of the driven gear 43, so that the limiting plate 12 is in an abutting state with the driven gear 43. At this time, the limiting plate 12 and the nail pressing plate 21 are in a half-pressing state; the handle 11 is pressed again, the handle 11 rotates anticlockwise, the driven gear 43 and the limiting plate 12 rotate in a following mode, the limiting plate 12 and the nail pressing plate 21 are in a full-pressing mode at the moment, wound suturing is completed (see fig. 7), meanwhile, due to the fact that the handle 11 is pressed again, the tooth-missing portion of the driven gear 43 is opposite to the limiting plate 12, the driven gear 43 and the limiting plate 12 are not contacted, the handle 11 is in a falling-off state, after the handle 11 is loosened, the handle 11 rotates clockwise, the limiting plate 12 rotates in a following mode, at the moment, the driven gear 43 stops rotating, the limiting plate 12 strokes the driven gear 43 clockwise, and reciprocation of the handle 11 is achieved.

As can be appreciated, the driven gear 43 is divided into a gear portion and a toothless portion, the gear portion and the toothless portion are alternately arranged, the gear portion is meshed with the abutment teeth 13, and a gap is formed between the toothless portion and the abutment teeth 13; the gear part maintains the same stroke as the driving teeth 15 on the handle 11, and when the driving teeth 15 drive the driving gear 42 to rotate, the gear part on the driven gear 43 follows the same stroke of rotation, so that rotation coordination and stability are realized.

Referring to fig. 2, 5, 6 and 7, the specific operation mode of the present utility model is that the present utility model is in an initial state (see fig. 2), the handle 11 is manually pinched to rotate the handle 11 anticlockwise, and one end of the limiting plate 12 abuts against the pressing top plate 21 and bends the staples 31; at the same time, the driving gear 42 follows clockwise rotation to reach a pre-positioning state.

Pre-positioning state (see fig. 5): after the anastomat 31 is bent to a certain angle, the anastomat 31 clamps the skin incision but does not penetrate through the skin incision, the skin incision is regulated to be tidy, the handle 11 is loosened, the driving gear 42 rotates anticlockwise, meanwhile, the end part of the limiting plate 12 abuts against the driven gear 43, and the limiting plate 12 and the pressing plate 21 are in a half-pressing state.

Positioning state (see fig. 6): at this time, the limiting plate 12 abuts against the nail pressing plate 21, the nail pressing plate 21 bends the anastomat 31 to a certain angle and keeps the anastomat to be motionless, and the limiting plate 12 is tightly pressed on the driven gear 43 under the influence of the elastic potential energy of the elastic piece 23 in the nail pressing mechanism 20; meanwhile, the driven gear 43 can only rotate unidirectionally under the cooperation of the ratchet wheel 44 and the pawl 45, so that a stable positioning state is realized.

Suture state (see fig. 7): after the incision is adjusted, the handle 11 is pressed down to further bend the staples 31 and penetrate the skin incision, thereby completing the wound suturing, and the limiting plate 12 and the pressing plate 21 are in a full-pressing state. The handle 11 is loosened, the handle 11 rotates clockwise, the limiting plate 12 rotates along with the handle, the driven gear 43 stops rotating, the tooth-missing part faces the limiting plate 12, the limiting plate 12 is enabled to scratch clockwise, reciprocation of the handle 11 is achieved, one-time sewing is completed, and the starting state is returned (see fig. 2).

The utility model installs the limiting plate 12 on the handle 11, and installs the limiting gear assembly 40 on the end of the limiting plate 12, in order to position the limiting plate 12; when suturing the incision, the utility model firstly bends the anastomat 31 to a certain angle and keeps the anastomat to be motionless, and the anastomat 31 clamps the skin incision but does not penetrate the skin incision at the moment, so that an operator can conveniently adjust the skin incision, keep the skin incision neat and facilitate subsequent recovery, after the incision is adjusted neatly, the handle 11 is pressed down, and the anastomat 31 is further bent and penetrates the skin incision to complete wound suturing.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. The utility model provides a predetermined skin stapler, includes suture ware shell (10) and rotationally sets up handle (11) in suture ware shell (10), suture ware shell (10) tip is equipped with presses nail mechanism (20), is equipped with in pressing nail mechanism (20) and presses nail (31), press nail mechanism (20) including mount pad (22), be equipped with on mount pad (22) slidable and press nail board (21), press nail board (21) one end butt nail (31), characterized in that, handle (11) are equipped with limiting plate (12) outward rotationally, are equipped with spacing gear assembly (40) in suture ware shell (10), limiting plate (12) tip butt press nail board (21), limiting plate (12) other end tip butt limit gear assembly (40), limiting gear assembly (40) make limiting plate (12) press nail board (21) the butt in half-press state or full-press state;

the limiting gear assembly (40) comprises a fixed shaft (41) fixedly connected in the suture instrument shell (10), a driving gear (42) and a driven gear (43) are rotatably arranged on the fixed shaft (41), the driven gear (43) rotates unidirectionally along with the driving gear (42), the driven gear (43) is a half gear, and the limiting plate (12) is abutted to teeth of the driven gear (43).

2. The pre-positioning skin stapler according to claim 1, wherein the end portion of the limiting plate (12) is provided with an opening (14), the opening (14) extends inwards from the end face of the limiting plate (12), the opening (14) penetrates through the upper surface and the lower surface of the limiting plate (12), the opening (14) divides the end portion of the limiting plate (12) into two symmetrical abutting teeth (13), and a plurality of driving teeth (15) are arranged on the side wall, close to the opening (14), of the handle (11).

3. The pre-positioning skin stapler according to claim 2, wherein the driven gear (43) is provided with two driven gears (42) symmetrically arranged on both sides of the driving gear, the driving gear (42) is opposite to the opening (14) and meshed with the driving teeth (15), and the driven gear (43) is meshed with the abutting teeth (13).

4. A pre-positioning skin stapler according to claim 3, characterized in that the fixed shaft (41) is provided with a ratchet wheel (44), the driven gear (43) is provided with a pawl (45), and the pawl (45) abuts against the ratchet wheel (44).

5. A pre-positioning skin stapler according to claim 3, wherein the driving gear (42) is provided with a first linkage groove (47), the driven gear (43) is provided with a second linkage groove (48), a linkage rod (46) is rotatably arranged in the first linkage groove (47), a part of the side wall of the linkage rod (46) is abutted against the side wall of the first linkage groove (47), the other part of the side surface of the linkage rod (46) is abutted against the side wall of the second linkage groove (48), and the end part of the linkage rod (46) is telescopically arranged in the second linkage groove (48).

6. A pre-positioning skin stapler according to claim 3, characterized in that said driven gear (43) is divided into a gear portion and a toothless portion, the gear portion and the toothless portion being alternately arranged, said gear portion being engaged with the abutment teeth (13), a gap being formed between said toothless portion and the abutment teeth (13).

7. The pre-positioning skin stapler according to claim 1, wherein one end of the handle (11) is provided with a rotating shaft (110), the limiting plate (12) is rotatably sleeved on the rotating shaft (110), the top surface of the handle (11) is in a herringbone structure, the contour of the limiting plate (12) is consistent with the contour of the top surface of the handle (11), and one end, far away from the rotating shaft (110), of the limiting plate (12) is lapped on the handle (11).

8. The pre-positioning skin stapler according to claim 1, wherein the stapling mechanism (20) is provided with a rotation hole, and the rotation shaft (110) of the handle (11) is rotatably provided in the rotation hole.

9. The pre-positioning skin stapler according to claim 1, wherein the mounting seat (22) is provided with a mounting cavity (25), the mounting cavity (25) is in a groove structure with one surface opened, and the elastic piece (23) is arranged in the mounting cavity (25).

10. The pre-positioning skin stapler according to claim 9, wherein the nail pressing plate (21) has an L-shaped structure, a pushing plane (24) is formed on the nail pressing plate (21), the end of the limiting plate (12) is abutted against the outer wall of the pushing plane (24), one end of the elastic member (23) is abutted against the bottom wall of the mounting cavity (25), and the other end of the elastic member (23) is abutted against the inner wall of the pushing plane (24).