Suturing device

Abstract

The invention provides a suturing device, and relates to the technical field of medical instruments, the suturing device comprises a support, a suturing needle and a driving assembly; the bracket is provided with a mounting part which is detachably connected to the endoscope; the driving assembly is installed on the support and is in transmission connection with the suture needle. The suture device can be combined with an endoscope, can suture a minimally invasive wound in the view of the endoscope, and is particularly suitable for endoscopic surgery with a large wound.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a suturing device. Background Art

[0002] With the continuous development of minimally invasive treatment technology through digestive endoscopy in surgical operations, the types of diseases that can be treated through digestive endoscopy are gradually increasing. In the operation of some diseases, the size of the wound caused by the operation will also increase due to the needs of the operation, thereby increasing the difficulty of surgical suturing. In endoscopic minimally invasive surgery, suturing is usually not required because the wound is small, but for endoscopic surgery that produces larger wounds, there is currently a lack of minimally invasive suturing equipment that can be applied to endoscopy. Summary of the invention

[0003] The purpose of the present invention is to provide a suturing device to achieve suturing of minor wounds in combination with an endoscope.

[0004] In a first aspect, the present invention provides a suturing device, comprising: a support, a suturing needle and a driving assembly;

[0005] The bracket has a mounting portion detachably connected to the endoscope;

[0006] The driving assembly is mounted on the bracket, and the driving assembly is drivingly connected to the suturing needle.

[0007] In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the drive assembly comprises: a drive plate, a crank and a connecting rod;

[0008] The crank is rotatably mounted on the bracket, the rotating shaft of the crank is coaxial with the driving disk, and the crank is connected to the driving disk, the middle part of the connecting rod is slidingly hinged to the crank, and one end of the connecting rod is slidingly hinged to the bracket, and the other end is transmission-connected to the suture needle.

[0009] In combination with the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the driving disc is provided with a first winding groove and a second winding groove extending circumferentially, and the first winding groove and the second winding groove are spaced apart in the axial direction;

[0010] The driving disk is provided with a first connecting portion corresponding to the first winding groove, and a second connecting portion corresponding to the second winding groove;

[0011] A first pulling wire connected to the first connection portion and wound along a first direction is disposed in the first winding groove, and a second pulling wire connected to the second connection portion and wound along a second direction is disposed in the second winding groove. The first direction is opposite to the second direction.

[0012] In combination with the first possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein a first shaft member is connected to the middle portion of the connecting rod;

[0013] The crank is provided with a first sliding groove extending radially along the driving disk, and the first shaft is slidably fitted in the first sliding groove.

[0014] In combination with the first possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein one end of the connecting rod is connected to a second shaft member;

[0015] The bracket is provided with a second slide groove extending from the proximal end to the distal end, and the second shaft is slidably fitted in the second slide groove.

[0016] In combination with the first possible implementation manner of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the bracket is provided with an arc-shaped slide groove and an arc-shaped groove extending along the arc-shaped slide groove;

[0017] The suturing needle is slidably matched with the arc-shaped slide groove, and the suturing needle is provided with a joint portion;

[0018] The distal end of the connecting rod is connected with a third shaft member, the third shaft member is slidably matched with the arc-shaped groove, and the third shaft member passes through the arc-shaped groove and is matched with the joint portion.

[0019] In combination with the fifth possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein the third shaft member includes: a cylinder sleeve, a plunger, a cylinder cover and a spring;

[0020] The cylinder sleeve is connected to the connecting rod, the plunger is inserted in the cylinder sleeve, the cylinder cover covers the cylinder sleeve, and the spring is installed between the plunger and the cylinder cover to drive the plunger to abut against the suture needle.

[0021] In combination with the fifth possible implementation of the first aspect, the present invention provides a seventh possible implementation of the first aspect, wherein the engaging portion is provided in plurality, and the plurality of engaging portions are arranged at intervals along the suture needle;

[0022] The joint portion comprises: a slot and a lead-out inclined surface;

[0023] The clamping groove is recessed in a direction away from the connecting rod, so that the third shaft can be clamped in the clamping groove and drive the suture needle to move along the insertion direction;

[0024] The lead-out inclined surface extends from one end extending to the slot in the opposite direction of the insertion direction and is inclined in the direction approaching the connecting rod, so that when the connecting rod moves in the opposite direction, the third shaft member slides out of the slot along the lead-out inclined surface until the third shaft member is engaged with the next slot.

[0025] In combination with the first possible implementation manner of the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the driving disc is provided with a circumferentially extending winding groove, and a metal soft wire is wound and connected in the winding groove;

[0026] The soft metal wire is led out along a guide groove arranged on the bracket.

[0027] In combination with the eighth possible implementation of the first aspect, the present invention provides a ninth possible implementation of the first aspect, wherein an extension direction of the guide groove close to one end of the drive disk is tangent to the circumference of the drive disk.

[0028] In combination with the eighth possible implementation manner of the first aspect, the present invention provides a tenth possible implementation manner of the first aspect, wherein the bracket is installed with an elastic torsion member, and the elastic torsion member is connected to the driving disk.

[0029] In combination with the first aspect, the present invention provides an eleventh possible implementation manner of the first aspect, wherein the bracket is connected to a stop member, and the stop member abuts against the suture needle to prevent the suture needle from moving in the reverse direction along the insertion direction.

[0030] In combination with the eleventh possible implementation of the first aspect, the present invention provides a twelfth possible implementation of the first aspect, wherein the suture needle is provided with a plurality of anti-retraction grooves, the plurality of anti-retraction grooves are arranged at intervals along the suture needle and are respectively adapted to the anti-retraction member.

[0031] The embodiments of the present invention bring about the following beneficial effects: a bracket having a mounting portion detachably connected to an endoscope is used to realize a combination of a suturing device and an endoscope; a driving component is installed on the bracket, and the driving component is connected to a suturing needle for transmission, so that suturing of a surgical wound can be achieved within the field of view of the endoscope.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of a suturing device and an endoscope provided in an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of a suturing device provided by an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of a drive assembly of a suturing device provided by an embodiment of the present invention;

[0037] Figure 4 A schematic diagram of a drive disk of a suturing device provided in an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of a connecting rod of a suturing device provided in an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of a drive disc and a crank of a suturing device provided in an embodiment of the present invention;

[0040] Figure 7 A cross-sectional view of a third shaft member of a suturing device provided by an embodiment of the present invention;

[0041] Figure 8 A schematic diagram of a suturing needle of a suturing device provided in an embodiment of the present invention;

[0042] Fig. 9 A schematic diagram of a support, a suturing needle, a driving disc and a stopper of a suturing device provided in an embodiment of the present invention;

[0043] Fig.10 A schematic diagram of a support of a suturing device provided in an embodiment of the present invention;

[0044] Fig.11 A schematic diagram of a support and a driving disk of another suturing device provided by an embodiment of the present invention;

[0045] Fig.12 A schematic diagram of a drive disc and a crank of another suturing device provided by an embodiment of the present invention;

[0046] Fig.13 A schematic diagram of a support, a suture needle, a stopper, a metal soft wire and an elastic torsion member of another suturing device provided in an embodiment of the present invention;

[0047] Fig.14 A schematic diagram of a support, a suturing needle, a driving disk, a stopper and a metal soft wire of another suturing device provided in an embodiment of the present invention.

[0048] Icons: 100-bracket; 101-mounting part; 102-second slide groove; 103-arc-shaped slide groove; 104-guide groove; 105-arc-shaped groove; 200-suture needle; 210-joining part; 211-slot; 212-export ramp; 220-retraction stop slot; 300-driving assembly; 310-driving disk; 311-first winding groove; 312-second winding groove; 313-first connecting part; 314-second connecting part; 320-crank; 321-first slide groove; 330-connecting rod; 331-first shaft member; 332-second shaft member; 333-third shaft member; 3331-cylinder sleeve; 3332-plunger; 3333-cylinder head; 3334-spring; 400-endoscope; 500-retraction stop member; 600-metal soft wire; 700-elastic torsion member. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are only used to describe the difference in names, and cannot be understood as indicating or implying relative importance. The physical quantities in the formula, if not separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] like Figure 1 , Figure 2 and Figure 3 As shown, the suturing device provided by the embodiment of the present invention includes: a bracket 100, a suturing needle 200 and a driving assembly 300; the bracket 100 has a mounting portion 101 detachably connected to the endoscope 400; the driving assembly 300 is installed on the bracket 100, and the driving assembly 300 is transmission-connected to the suturing needle 200.

[0053] Specifically, the mounting portion 101 can be mounted on the endoscope 400 by means of snap-fitting, threaded fitting or plugging. After assembly, the bracket 100 is located beside the endoscope 400 to avoid blocking the field of view of the endoscope 400, and the suture needle 200 is located within the field of view of the endoscope 400 so that the suture position can be observed through the endoscope 400. The combination of the suture device and the endoscope 400 is achieved, and the surgical wound can be sutured under the field of view of the endoscope 400.

[0054] In an optional embodiment, the mounting portion 101 is configured as a tubular structure, and is sleeved on the head end of the endoscope 400 through the tubular structure. The mounting portion 101 is interference fit or threadedly connected with the endoscope 400 to ensure a stable installation.

[0055] like Figure 1 , Figure 2 , Figure 3 , Fig. 9 and Fig.10 As shown, in an embodiment of the present invention, the driving assembly 300 includes: a driving disk 310, a crank 320 and a connecting rod 330; the crank 320 is rotatably mounted on the bracket 100, the rotating shaft of the crank 320 is coaxial with the driving disk 310, and the crank 320 is connected to the driving disk 310, the middle part of the connecting rod 330 is slidingly hinged to the crank 320, and one end of the connecting rod 330 is slidingly hinged to the bracket 100, and the other end is transmission-connected to the suture needle 200.

[0056] When the driving disk 310 rotates, the driving disk 310 drives the connecting rod 330 to move through the crank 320, and the connecting rod 330 cooperates with one end of the suture needle 200 to slide back and forth along the bracket 100, thereby driving the suture needle 200 to achieve a piercing movement, and the suture thread is driven by the suture needle 200 to penetrate the wound, thereby achieving suturing of the wound.

[0057] like Figure 3 and Figure 4 As shown, the driving disk 310 is provided with a first winding groove 311 and a second winding groove 312 extending in the circumferential direction, and the first winding groove 311 and the second winding groove 312 are spaced apart in the axial direction; the driving disk 310 is provided with a first connecting portion 313 corresponding to the first winding groove 311, and a second connecting portion 314 corresponding to the second winding groove 312; a first pulling wire connected to the first connecting portion 313 and wound along a first direction is provided in the first winding groove 311, and a second pulling wire connected to the second connecting portion 314 and wound along a second direction is provided in the second winding groove 312, and the first direction is opposite to the second direction. When the first pulling wire is pulled and the second pulling wire is released, the first pulling wire can drive the driving disk 310 to rotate; when the second pulling wire is pulled and the first pulling wire is released, the second pulling wire will drive the driving disk 310 to rotate in the opposite direction. The first connection portion 313 and the second connection portion 314 can both be configured as a slot or a protrusion, so that the drawing wire can be wound there and knotted, thereby preventing the first drawing wire and the second drawing wire from falling off.

[0058] like Figure 3 , Figure 5 and Figure 6 As shown, the middle part of the connecting rod 330 is connected with a first shaft member 331; the crank 320 is provided with a first slide groove 321 extending radially along the driving disk 310, and the first shaft member 331 is slidably fitted in the first slide groove 321. The first slide groove 321 deviates from the axis of the driving disk 310 and extends radially along the driving disk 310. When the driving disk 310 rotates, the crank 320 drives the first shaft member 331 to move and causes the first shaft member 331 to slide along the first slide groove 321.

[0059] like Figure 3 , Figure 5 and Fig.10 As shown, one end of the connecting rod 330 is connected to the second shaft 332; the bracket 100 is provided with a second slide groove 102 extending from the proximal end to the distal end, and the second shaft 332 is slidably fitted in the second slide groove 102. When the driving disk 310 rotates, the crank 320 drives the connecting rod 330 to move, and the second shaft 332 reciprocates along the second slide groove 102.

[0060] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Fig. 9 and Fig.10 As shown, the bracket 100 is provided with an arc-shaped slide groove 103 and an arc-shaped groove 105 extending along the arc-shaped slide groove 103; the suture needle 200 is slidably fitted in the arc-shaped slide groove 103, and the suture needle 200 is provided with a joint 210; the distal end of the connecting rod 330 is connected to a third shaft member 333, the third shaft member 333 is slidably fitted in the arc-shaped groove 105, and the third shaft member 333 passes through the arc-shaped groove 105 and is fitted in the joint 210.

[0061] When the driving disk 310 rotates, the driving disk 310 drives the crank 320 to swing, and the driving disk 310 drives the first shaft 331, thereby driving the connecting rod 330. Not only does the second shaft 332 reciprocate along the second slide groove 102, but the connecting rod 330 also swings around the second shaft 332, thereby ensuring that the third shaft 333 can slide along the arc-shaped slide groove 103, and the third shaft 333 cooperates with the joint 210, thereby driving the suture needle 200 to move.

[0062] like Figure 5 and Figure 7 As shown, in an optional embodiment, the third shaft member 333 includes: a cylinder sleeve 3331, a plunger 3332, a cylinder cover 3333 and a spring 3334; the cylinder sleeve 3331 is connected to the connecting rod 330, the plunger 3332 is inserted in the cylinder sleeve 3331, the cylinder cover 3333 covers the cylinder sleeve 3331, and the spring 3334 is installed between the plunger 3332 and the cylinder cover 3333 to drive the plunger 3332 to abut against the suture needle 200. The spring 3334 can drive the plunger 3332 to extend from the cylinder sleeve 3331 and the end of the plunger 3332 to abut against the suture needle 200. See FIG. Figure 5 , Figure 7 , Fig. 9 and Fig.10 As shown, the cylinder sleeve 3331 slides along the arc-shaped slide groove 103 , and the plunger 3332 is engaged or frictionally fitted with the engagement portion 210 , thereby driving the suture needle 200 to slide along the arc-shaped slide groove 103 .

[0063] like Figure 5 and Figure 8 As shown, in the present embodiment, a plurality of joints 210 are provided, and the plurality of joints 210 are arranged at intervals along the suture needle 200; the joint 210 comprises: a slot 211 and an extracting slope 212; the slot 211 is recessed in a direction away from the connecting rod 330, so that the third shaft member 333 can be engaged in the slot 211 and drive the suture needle 200 to move in the insertion direction; the extracting slope 212 extends from one end extending to the slot 211 in the opposite direction of the insertion direction, and is inclined in a direction close to the connecting rod 330, so that when the connecting rod 330 moves in the reverse direction, the third shaft member 333 slides out from the slot 211 along the extracting slope 212 until the third shaft member 333 is engaged with the next slot 211.

[0064] Reference Figure 8 In the position shown, when the third shaft 333 is engaged with the slot 211 and drives the suture needle 200 to move clockwise, the third shaft 333 and the joint 210 maintain a stable fit to avoid mutual slippage, thereby effectively transmitting power to drive the suture needle 200 to complete the insertion action. When the third shaft 333 moves in the opposite direction of the insertion direction, the third shaft 333 will slide away from the joint 210 along the lead-out inclined surface 212, thereby ensuring that the suture needle 200 can only move in one direction.

[0065] In an alternative approach, see Figure 5 and Fig. 9 In order to keep the suture needle 200 in unidirectional motion and prevent the suture needle 200 from moving in the opposite direction along the insertion direction with the driving assembly 300, the bracket 100 is connected with a stop member 500, and the stop member 500 can be configured as a structure such as a spring sheet or a ratchet. The stop member 500 abuts against the suture needle 200 to prevent the suture needle 200 from moving in the opposite direction along the insertion direction.

[0066] like Figure 8 and Fig. 9 As shown, the suture needle 200 is provided with a plurality of anti-retraction slots 220 , which are arranged at intervals along the suture needle 200 and are respectively adapted to the anti-retraction member 500 .

[0067] Reference Fig. 9 In the position shown, when the suture needle 200 is driven to rotate counterclockwise to achieve insertion and suturing, the stopper 500 will be pushed by the inclined surface of the stopper slot 220 to disengage from the stopper slot 220, thereby ensuring that the suture needle 200 moves smoothly in the insertion direction; during suturing, as the suture needle 200 moves, the stopper 500 can slide out of one stopper slot 220 and fit into another stopper slot 220. When the suture needle 200 is subjected to a reverse driving force in the insertion direction, the stopper 500 is engaged with the stopper slot 220 to prevent the suture needle 200 from moving in the reverse direction.

[0068] like Figure 3 , Figure 5 , Figure 8 , Fig. 9 , Fig.11 , Fig.12 and Fig.14As shown, the drive disk 310 is provided with a winding groove extending in the circumferential direction, and a metal soft wire 600 is wound and connected in the winding groove; the metal soft wire 600 is led out along the guide groove 104 provided on the bracket 100. When the metal soft wire 600 is pulled, the metal soft wire 600 pulls the drive disk 310 to rotate, and drives the suture needle 200 to perform the suture action; when the metal soft wire 600 is pushed, the metal soft wire 600 will transmit the thrust to the drive disk 310, so that the drive disk 310 rotates in the opposite direction. At this time, the suture needle 200 is limited by the stopper 500 and remains stationary, and the third shaft member 333 slides out from the inner groove 211 along the lead-out inclined surface 212 until the third shaft member 333 is matched with the next groove 211, and then the metal soft wire 600 can be continuously pulled to perform the suture action, and this reciprocating process is repeated until the suture is completed.

[0069] Furthermore, the extension direction of the guide groove 104 close to one end of the driving disk 310 is tangent to the circumference of the driving disk 310, so as to ensure that the metal soft wire 600 in the guide groove 104 can smoothly extend to the circumference of the driving disk 310, and the power transmission is smoother.

[0070] In addition, see Fig.13 As shown, the bracket 100 is equipped with an elastic torsion member 700, which is connected to the driving disk 310. Pulling the metal soft wire 600 can drive the driving disk 310 to rotate, and the suturing action of the suturing needle 200 is realized through the transmission of the crank 320 and the connecting rod 330; when the metal soft wire 600 is pushed, the elastic torsion member 700 rebounds and drives the driving disk 310 to rotate and reset, and the metal soft wire 600 transmits the thrust to realize the reset action of the driving disk 310.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A suturing device, characterized in that: include: A support (100), a suturing needle (200) and a driving assembly (300); The support (100) has a mounting portion (101) detachably connected to the endoscope (400); The driving assembly (300) is mounted on the bracket (100), and the driving assembly (300) is drivingly connected to the suturing needle (200).

2. The suturing device according to claim 1, characterized in that: The driving assembly (300) comprises: a driving disc (310), a crank (320) and a connecting rod (330); The crank (320) is rotatably mounted on the bracket (100), the rotating shaft of the crank (320) is coaxial with the driving disk (310), and the crank (320) is connected to the driving disk (310), the middle part of the connecting rod (330) is slidingly hinged to the crank (320), and one end of the connecting rod (330) is slidingly hinged to the bracket (100), and the other end is drivingly connected to the suture needle (200).

3. The suturing device according to claim 2, characterized in that: The driving disk (310) is provided with a first winding groove (311) and a second winding groove (312) extending in a circumferential direction, wherein the first winding groove (311) and the second winding groove (312) are arranged at intervals in the axial direction; The driving disk (310) is provided with a first connecting portion (313) corresponding to the first winding groove (311), and a second connecting portion (314) corresponding to the second winding groove (312); A first pulling wire connected to the first connecting portion (313) and wound along a first direction is provided in the first winding groove (311), and a second pulling wire connected to the second connecting portion (314) and wound along a second direction is provided in the second winding groove (312), and the first direction is opposite to the second direction.

4. The suturing device according to claim 2, characterized in that: The middle part of the connecting rod (330) is connected to a first shaft member (331); The crank (320) is provided with a first sliding groove (321) extending radially along the driving disk (310), and the first shaft (331) is slidably fitted in the first sliding groove (321).

5. The suturing device according to claim 2, characterized in that: One end of the connecting rod (330) is connected to a second shaft (332); The support (100) is provided with a second slide groove (102) extending from the proximal end to the distal end, and the second shaft (332) is slidably fitted in the second slide groove (102).

6. The suturing device according to claim 2, characterized in that: The bracket (100) is provided with an arc-shaped slide groove (103) and an arc-shaped groove (105) extending along the arc-shaped slide groove (103); The suturing needle (200) is slidably matched with the arc-shaped sliding groove (103), and the suturing needle (200) is provided with a joint portion (210); The distal end of the connecting rod (330) is connected to a third shaft member (333), the third shaft member (333) is slidably engaged with the arc-shaped groove (105), and the third shaft member (333) passes through the arc-shaped groove (105) and is engaged with the joint (210).

7. The suturing device according to claim 6, characterized in that: The third shaft member (333) includes: a cylinder sleeve (3331), a plunger (3332), a cylinder cover (3333) and a spring (3334); The cylinder sleeve (3331) is connected to the connecting rod (330), the plunger (3332) is inserted into the cylinder sleeve (3331), the cylinder cover (3333) covers the cylinder sleeve (3331), and the spring (3334) is installed between the plunger (3332) and the cylinder cover (3333) to drive the plunger (3332) to abut against the suture needle (200).

8. The suturing device according to claim 6, characterized in that: A plurality of the engaging parts (210) are provided, and the plurality of the engaging parts (210) are arranged at intervals along the suture needle (200); The joint portion (210) comprises: a clamping groove (211) and a guide inclined surface (212); The clamping groove (211) is recessed in a direction away from the connecting rod (330), so that the third shaft member (333) can be clamped in the clamping groove (211) and drive the suture needle (200) to move in the insertion direction; The lead-out inclined surface (212) extends from one end extending to the slot (211) in the opposite direction of the insertion direction and is inclined in a direction close to the connecting rod (330), so that when the connecting rod (330) moves in the opposite direction, the third shaft member (333) slides out from the slot (211) along the lead-out inclined surface (212) until the third shaft member (333) is engaged with the next slot (211).

9. The suturing device according to claim 2, characterized in that: The driving disc (310) is provided with a circumferentially extending winding groove, in which a metal soft wire (600) is wound and connected; The soft metal wire (600) is led out along a guide groove (104) provided on the bracket (100).

10. The suturing device according to claim 9, characterized in that: The extending direction of the guide groove (104) close to one end of the driving disk (310) is tangent to the circumference of the driving disk (310).

11. The suturing device according to claim 2 or 9, characterized in that: The bracket (100) is installed with an elastic torsion member (700), and the elastic torsion member (700) is connected to the driving disk (310).

12. The suturing device according to claim 1, characterized in that: The support (100) is connected to a stopper (500), and the stopper (500) abuts against the suturing needle (200) to prevent the suturing needle (200) from moving in the reverse direction along the insertion direction.

13. The suturing device according to claim 12, characterized in that: The suturing needle (200) is provided with a plurality of anti-retraction grooves (220), and the plurality of anti-retraction grooves (220) are arranged at intervals along the suturing needle (200) and are respectively adapted to the anti-retraction member (500).

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