Stitching instrument and thread hook mounting assembly

Abstract

The utility model relates to a stitching instrument and a thread hook installation assembly. The thread hook installation assembly comprises an outer pipe, a supporting seat and a thread hook. And the supporting seat is fixedly arranged in the far end of the outer tube. The wire hook is arranged in the far end of the outer tube, and the wire hook is rotationally installed on the supporting base. According to the thread hook installation assembly, due to the fact that the supporting base is fixedly arranged in the far end of the outer tube, the thread hook is installed through the supporting base, and the thread hook is rotatably installed on the supporting base, the installation reliability and stability of the thread hook in the outer tube can be improved, and then the defect that a suture thread slips off can be overcome in the process that the suture thread is hooked by the thread hook.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a suturing device and a wire hook mounting assembly. Background Art

[0002] Suturing is the process of reconnecting or reconstructing tissues and organs that have been cut or ruptured by trauma to restore their function. It is essential for proper healing and is one of the most important basic surgical techniques. Different methods and approaches are used for suturing tissues and organs in different locations.

[0003] During the suturing process, conventional suturing devices typically utilize a wire hook to hook the suture thread to complete the tissue suturing operation. In applications where the wire hook is installed inside a slender tube, the wire hook is typically directly rotatably mounted on the inner wall of the slender tube using a pin. However, the thin-walled slender tube results in poor reliability and stability in the installation of the wire hook on the slender tube, which can easily cause the suture thread to slip off the wire hook, or the wire hook installed on the inner wall to loosen and fall off due to external forces, thereby failing to properly perform its wire hooking function and reducing the success rate of the surgery. Summary of the Invention

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide a suture device and a wire hook installation assembly, which can improve the reliability and stability of the wire hook installation.

[0005] A wire hook installation assembly, the wire hook installation assembly comprising:

[0006] External control;

[0007] A support seat, the support seat being fixedly mounted inside the distal end of the outer tube;

[0008] A wire hook is arranged inside the distal end of the outer tube and is rotatably mounted on the support seat.

[0009] In one embodiment, the support base is provided with two support arms spaced apart from each other;

[0010] The wire hook comprises a mounting seat located between the two support arms and rotatably connected to the two support arms respectively, and a clamping claw connected to the mounting seat.

[0011] In one embodiment, two opposite sides of the mounting seat respectively abut against two support arms; and / or, the two support arms respectively abut against two opposite sides of the inner side wall of the outer tube.

[0012] In one embodiment, the side surface of the support arm facing the inner wall of the outer tube is adapted to the shape of the inner wall of the outer tube; and / or, the portions where the support arm and the mounting seat abut against each other are both configured as planes.

[0013] In one embodiment, the wire hook mounting assembly further includes a pin shaft, a first axial hole is provided on the mounting seat, each of the support arms is provided with a second axial hole corresponding to the position of the first axial hole, and third axial holes corresponding to the position of the first axial hole are formed on two opposite sides of the outer tube, and the pin shaft is respectively passed through the first axial hole, two of the second axial holes and two of the third axial holes to connect the mounting seat, the support arm and the outer tube in combination.

[0014] In one embodiment, the wire hook installation assembly also includes a sealing piece, the distal end of the outer tube is provided with a pipe opening, the distal side wall of the outer tube is provided with a window connected to the interior of the outer tube, and the sealing piece is inserted into the pipe opening at the distal end of the outer tube to seal the pipe opening.

[0015] In one embodiment, the sealing member includes a sealing head and a cannula connected to the sealing head, the sealing head protrudes to the outside of the outer tube, and the cannula is inserted into the inside of the tube mouth; the cannula is provided with a first plug-in portion, the support seat is provided with a second plug-in portion, the support seat is inserted into the inside of the cannula, and the second plug-in portion and the first plug-in portion are plugged into and matched with each other.

[0016] In one embodiment, the cannula is interference fit with the tube mouth of the outer tube; and / or the outer wall of the plugging head is an arc-shaped surface or an elliptical surface; and / or the support seat is interference fit with the cannula; and / or the shape of the distal outer wall of the support seat is adapted to the shape of the inner wall of the plugging head.

[0017] In one embodiment, the first plug-in portion is a plug-in port formed on the tube wall of the inserting tube; the second plug-in portion is a plug-in block protruding from the outer wall of the support seat, and the plug-in block is plugged and fixed in the plug-in port.

[0018] In one embodiment, the wire hook installation assembly also includes a pin shaft, which passes through the support seat, and a snap-in and a limiting portion are formed at the edge of the plug-in interface. The limiting portion is formed at the proximal end of the snap-in and adjacent to the snap-in, and the pin shaft is snapped into the snap-in.

[0019] In one embodiment, a first avoidance recess is formed on the support seat, which is arranged corresponding to the position of the puncture member of the stapler; a second avoidance recess is also formed on the support seat, which is arranged corresponding to the position of the push-pull mechanism of the stapler; a first notch is formed on the proximal tube wall of the cannula, which is used to avoid the wire hook; and a second notch is also formed on the proximal tube wall of the cannula, which is used to avoid the push-pull mechanism.

[0020] A suturing device comprises the wire hook mounting assembly.

[0021] The above-mentioned suturing device and wire hook installation assembly has a support base fixedly installed inside the distal end of the outer tube, and the wire hook is installed using the support base so that the wire hook can be rotatably installed on the support base, thereby improving the installation reliability and stability of the wire hook inside the outer tube, and preventing the suture thread from slipping off during the process of the wire hook hooking the suture thread. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a stapler according to an embodiment of the present application.

[0023] Figure 2 for Figure 1 The wire hook of the structure shown is rotated to the wire hooking position and is an enlarged view at A.

[0024] Figure 3 for Figure 1 An enlarged view of the structure shown with the hook rotated to the released position at A.

[0025] Figure 4 for Figure 1 A cross-sectional view of the wire hook of the structure shown rotated to the wire hooking position.

[0026] Figure 5 for Figure 1 Exploded view at A.

[0027] Figure 6 This is a structural diagram of a sealing member of a stapler according to an embodiment of the present application.

[0028] Figure 7 This is a structural diagram from one perspective of a support base of a stapler according to an embodiment of the present application.

[0029] Figure 8 This is a structural diagram from another perspective of the support base of the stapler according to one embodiment of the present application.

[0030] 10. Wire hook mounting assembly; 11. Outer tube; 111. Third axial hole; 112. Window; 12. Support seat; 121. Support arm; 1211. Second axial hole; 122. Second plug-in portion; 123. First avoidance recess; 124. Second avoidance recess; 13. Wire hook; 131. Mounting seat; 1311. Connecting column; 1312. First axial hole; 1313. Mounting hole; 132. Clamping claw; 14. Pin shaft; 15. Blocking piece; 151. Blocking head; 152. Insert tube; 1521. First plug-in portion; 1522. Bayonet; 1523. First notch; 1524. Second notch; 1525. Limiting part; 16. Push rod; 20. Piercing piece; 21. Threading hole; 30. Push-pull mechanism; 31. Push-pull rod; 32. Moving block; 321. Movable hole. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it is still necessary to explain that the proximal end refers to the end of the instrument or component close to the operator, and the distal end refers to the end of the instrument or component away from the operator; the axial direction refers to the direction parallel to the line connecting the distal and proximal ends of the instrument or component, the radial direction refers to the direction perpendicular to the axial direction, and the circumferential direction refers to the direction surrounding the axial direction.

[0033] See Figures 1 to 4 , Figure 1 A structural diagram of a stapler according to an embodiment of the present application is shown. Figure 2 and Figure 3 Shown respectively Figure 1 The wire hook 13 of the structure shown is rotated to the wire hooking position and the release position and is an enlarged view at point A. Figure 4 Shown Figure 1 A cross-sectional view of the wire hook 13 shown in the structure shown rotated to the wire hooking position. One embodiment of the present application provides a wire hook mounting assembly 10 comprising an outer tube 11, a support base 12, and a wire hook 13. The support base 12 is fixedly mounted within the distal end of the outer tube 11, and the wire hook 13 is disposed within the distal end of the outer tube 11 and rotatably mounted on the support base 12.

[0034] The above-mentioned wire hook installation assembly 10 has a support base 12 fixedly installed inside the distal end of the outer tube 11, and the wire hook 13 is installed using the support base 12, so that the wire hook 13 can be rotatably installed on the support base 12, thereby improving the installation reliability and stability of the wire hook 13 inside the outer tube 11, and thus preventing the suture from slipping off during the process of the wire hook 13 hooking the suture.

[0035] Specifically, the support base 12 is provided with two support arms 121 spaced apart from each other. The wire hook 13 includes a mounting base 131 positioned between and pivotally connected to the two support arms 121, and a claw 132 connected to the mounting base 131. This pivotal connection between the mounting base 131 and the two support arms 121 of the support base 12 improves the reliability and stability of the installation of the wire hook 13 within the outer tube 11.

[0036] See also Figure 2 、 Figure 3 and Figure 7 In one embodiment, the mounting base 131 abuts against the two support arms 121 on opposite sides. Thus, the two support arms 121 act as limiters, preventing the wire hook 13 from moving along the rotation axis within the outer tube 11, thereby further improving the reliability and stability of the installation of the wire hook 13 within the outer tube 11.

[0037] In one embodiment, the two support arms 121 abut against opposite sides of the inner wall of the outer tube 11. It should be noted that this abutment in this embodiment can be direct or indirect, meaning that an intermediate element is permitted. This increases structural strength, prevents deformation of the support arms 121 under stress, and further enhances the reliability and stability of the installation of the wire hook 13 within the outer tube 11.

[0038] Optionally, the side of the support arm 121 facing the inner wall of the outer tube 11 is adapted to the shape of the inner wall of the outer tube 11, and is specifically set to an arcuate surface, so that the support arm 121 has better stability when it is attached to the inner wall of the outer tube 11.

[0039] Furthermore, the areas where the support arm 121 and the mounting seat 131 abut against each other are both flat. Specifically, the side of the support arm 121 facing the mounting seat 131 is, for example, flat. The flat abutment between the mounting seat 131 and the support arm 121 reduces friction when the mounting seat 131 rotates relative to the support arm 121, preventing side-to-side wobbling and improving rotational stability.

[0040] In a specific embodiment, the mounting base 131 includes a connecting column 1311. Two opposite end surfaces of the connecting column 1311 are configured as planes and respectively abut against the two supporting arms 121.

[0041] See also Figure 2 、 Figure 4 and Figure 5 In one embodiment, the wire hook mounting assembly 10 further includes a pin 14. A first axial hole 1312 is provided on the mounting base 131. The first axial hole 1312 specifically passes through the opposite ends of the connecting column 1311. In addition, each support arm 121 is provided with a second axial hole 1211 corresponding to the position of the first axial hole 1312. Third axial holes 111 corresponding to the position of the first axial hole 1312 are formed on two opposite side portions of the outer tube 11. The pins 14 are respectively provided through the first axial hole 1312, the two second axial holes 1211, and the two third axial holes 111 to connect the mounting base 131, the support arm 121, and the outer tube 11. In this way, on the one hand, the mounting seat 131 can rotate freely and flexibly inside the outer sleeve; on the other hand, during the assembly process, the first axial hole 1312 of the mounting seat 131, the second axial hole 1211 of the support arm 121 and the third axial hole 111 of the outer tube 11 are relatively aligned, and then the pin shaft 14 is inserted, so that the wire hook 13 can be rotatably installed inside the outer sleeve, and the assembly operation is more convenient.

[0042] In some embodiments, both ends of the pin 14 can be fixed to the outer tube 11 by welding, riveting, plugging, etc., as long as the ends of the pin 14 are connected to the outer tube 11 to prevent them from detaching from the outer tube 11.

[0043] See also Figure 2 、 Figure 5 and Figure 6 In one embodiment, the wire hook mounting assembly 10 further includes a sealing member 15. The distal end of the outer tube 11 is provided with a nozzle, and a window is formed in the distal sidewall of the outer tube 11, communicating with the interior of the outer tube 11. The sealing member 15 is inserted into the nozzle at the distal end of the outer tube 11 to seal the nozzle. This eliminates the need for further processing and sealing at the distal nozzle of the outer tube 11 during manufacturing. Instead, the sealing member 15 can be used for sealing. This allows for independent processing, thereby reducing manufacturing difficulty and mold costs.

[0044] It should be noted that there are many ways to insert the blocking piece 15 into the distal end of the outer tube 11 through the tube mouth. It can be directly inserted into the interior of the outer tube 11 from the tube mouth along the axial direction of the outer tube 11, or a bayonet can be formed on the distal side wall of the outer tube 11 so that the blocking piece 15 is snapped into the distal end of the outer tube 11 through the bayonet, thereby being inserted into the tube mouth.

[0045] Of course, as some optional solutions, the blocking member 15 can also be connected to the outer tube 11 as a whole, that is, formed in one piece with the outer tube 11.

[0046] In one embodiment, the blocking member 15 includes a blocking head 151 and a cannula 152 connected to the blocking head 151. The blocking head 151 protrudes from the outside of the outer tube 11, and the cannula 152 is inserted into the inside of the tube mouth. The cannula 152 is provided with a first plug-in portion 1521, and the support seat 12 is provided with a second plug-in portion 122. The support seat 12 is inserted into the cannula 152, and the second plug-in portion 122 and the first plug-in portion 1521 are plugged and matched with each other. In this way, the blocking member 15 and the support seat 12 can be fixedly installed inside the distal end of the outer tube 11, and the blocking member 15 and the support seat 12 can be prevented from rotating inside the outer tube 11 along the circumference of the outer tube 11.

[0047] In one embodiment, the cannula 152 is interference-fitted with the tube opening of the outer tube 11 , so that the cannula 152 is stably installed inside the outer tube 11 .

[0048] In one embodiment, the outer wall of the blocking head 151 is in the shape of an arc or an ellipse, so as to reduce damage to tissues during the process of entering the surgical channel.

[0049] In one embodiment, the support base 12 and the cannula 152 have an interference fit. Furthermore, the shape of the distal outer wall of the support base 12 matches the shape of the inner wall of the plugging head 151. Specifically, if the inner wall of the plugging head 151 is spherical, the distal outer wall of the support base 12 is also spherical. This ensures a secure connection between the support base 12 and the plugging member 15.

[0050] In some embodiments, the first plug-in portion 1521 is, for example, an inserting port formed on the wall of the inserting tube 152. The second plug-in portion 122 is, for example, an inserting block protruding from the outer wall of the support base 12, which is inserted and fixed in the inserting port.

[0051] In some embodiments, first plug-in portions 1521 are respectively provided on opposite sides of the cannula 152, and second plug-in portions 122 are respectively provided on opposite sides of the support base 12. Optionally, the two first plug-in portions 1521 are symmetrically arranged about the axis of the outer tube 11, and the two second plug-in portions 122 are symmetrically arranged about the axis of the outer tube 11.

[0052] In some embodiments, the wire hook mounting assembly 10 further includes a pin 14. The pin 14 extends through the support base 12. A latch 1522 and a stopper are formed at the edge of the insertion port. The stopper is formed proximal to and adjacent to the latch 1522, and the pin 14 engages within the latch 1522. This prevents the blocking member 15 from axially moving relative to the support base 12. If the pin also extends through the outer tube 11, relative axial movement of the blocking member 15, the support base 12, and the outer tube 11 is prevented.

[0053] See also Figure 4 、 Figure 5 and Figure 7 In some embodiments, the support base 12 is formed with a first avoidance recess 123 corresponding to the position of the stapler's puncture member 20. In this way, after the stapler's puncture member 20 punctures the target tissue, it can enter the first avoidance recess 123 accordingly, thereby not being interfered with by the support base 12.

[0054] See also Figure 4 、 Figure 5 and Figure 7 In some embodiments, the support base 12 is further formed with a second avoidance recess 124 corresponding to the position of the push-pull mechanism 30 of the stapler. In this way, when the push-pull mechanism 30 moves toward the distal end of the outer tube 11, it can enter the second avoidance recess 124 accordingly, thereby avoiding interference with the support base 12.

[0055] See also Figure 4 and Figure 6 In some embodiments, a first notch 1523 is formed on the proximal wall of the cannula 152 to allow passage of the wire hook 13. This allows the wire hook 13 to rotate flexibly within the outer tube 11 during operation without interference from the cannula 152. Furthermore, a second notch 1524 is formed on the proximal wall of the cannula 152 to allow passage of the push-pull mechanism 30. As the push-pull mechanism 30 extends toward the distal end of the outer tube 11, the second notch 1524 allows the cannula 152 to clear the push-pull mechanism 30, preventing interference from the cannula 152.

[0056] In one embodiment, a suturing device includes the wire hook mounting assembly 10 according to any of the above embodiments.

[0057] The above-mentioned suturing device has a support base 12 fixedly installed inside the distal end of the outer tube 11, and the wire hook 13 is installed using the support base 12, so that the wire hook 13 can be rotatably installed on the support base 12, thereby improving the installation reliability and stability of the wire hook 13 inside the outer tube 11, and thus preventing the suture thread from slipping off during the process of the wire hook 13 hooking the suture thread.

[0058] In some embodiments, the puncture member 20 includes but is not limited to a puncture needle, wherein the puncture needle is provided with a threading hole 21, and the suture thread is passed through the threading hole 21 and penetrates into the target tissue along with the puncture needle to achieve suturing of the target tissue.

[0059] See also Figure 4 and Figure 5In some embodiments, the push-pull mechanism 30 includes a push-pull rod 31 and a movable block 32 connected to the push-pull rod 31. A movable hole 321 is formed on the movable block 32. The movable hole 321 includes but is not limited to a waist-shaped hole, a bar-shaped hole, etc. The wire hook mounting assembly 10 also includes a push rod 16 connected to the mounting seat 131. Specifically, the mounting seat 131 is formed with a mounting hole 1313, one end of the push rod 16 is inserted into the mounting hole 1313, and the other end of the push rod 16 extends to the outside of the mounting seat 131, and is inserted into the movable hole 321 and can move along the movable hole 321. Among them, the push-pull rod 31 can move back and forth under manual drive, or can move back and forth under the drive of a power mechanism such as a screw motor or a cylinder. It is not limited here and can be flexibly adjusted and set according to actual needs. When the push-pull rod 31 drives the moving block 32 to move back and forth, the moving block 32 drives the push rod 16 to move, and the push rod 16 moves along the movable hole 321 and drives the mounting seat 131 to rotate, thereby realizing the switching of the claw 132 between the release position and the hooking position.

[0060] See also Figure 4 and Figure 5 In some embodiments, a window 112 is formed on the outer tube 11, and the target tissue can pass through the window 112 and enter the interior of the outer tube 11 under negative pressure suction. During suturing, the puncture member 20 and the wire hook 13 cooperate with each other to achieve suturing of the target tissue.

[0061] It should be noted that the "mounting seat 131" can be "a part of the wire hook 13", that is, the "mounting seat 131" and the "other parts of the wire hook 13" are manufactured as one piece; it can also be an independent component that can be separated from the "other parts of the wire hook 13", that is, the "mounting seat 131" can be manufactured independently and then combined with the "other parts of the wire hook 13" into a whole.

[0062] It should be noted that the wire hook installation assembly 10 in the present application is intended to cover the situation where the various parts in the wire hook installation assembly 10 can be directly assembled, and is also intended to cover the situation where the various parts in the wire hook installation assembly 10 cannot be directly assembled, but require the help of medical devices such as the outer shell and components inside the outer shell to achieve the assembly of the various parts in the wire hook installation assembly 10.

[0063] It should also be noted that the related technologies in the background technology of this application are only for the convenience of explaining the technical problems to be solved by this application, and the related technologies do not necessarily belong to the existing technology.

[0064] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0065] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0066] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A wire hook installation assembly, characterized in that: The wire hook installation assembly includes: External control; A support seat, the support seat being fixedly mounted inside the distal end of the outer tube; a wire hook, the wire hook being arranged inside the distal end of the outer tube and rotatably mounted on the support seat; Wherein, the support base is provided with two support arms arranged relatively spaced apart; The wire hook comprises a mounting seat located between the two support arms and rotatably connected to the two support arms respectively, and a clamping claw connected to the mounting seat.

2. The wire hook installation assembly according to claim 1, characterized in that: The mounting seat is in contact with two supporting arms on opposite sides respectively; and / or the two supporting arms are in contact with two opposite sides of the inner side wall of the outer tube respectively.

3. The wire hook installation assembly according to claim 2, characterized in that: The side surface of the support arm facing the inner wall of the outer tube is adapted to the shape of the inner wall of the outer tube; and / or, the portions where the support arm and the mounting seat abut against each other are both configured as planes.

4. The wire hook installation assembly according to claim 2, characterized in that: The wire hook mounting assembly also includes a pin shaft, a first axial hole is provided on the mounting seat, each of the support arms is provided with a second axial hole corresponding to the position of the first axial hole, and a third axial hole corresponding to the position of the first axial hole is formed on two opposite sides of the outer tube, and the pin shaft is respectively passed through the first axial hole, two second axial holes and two third axial holes to connect the mounting seat, the support arm and the outer tube.

5. The wire hook installation assembly according to claim 1, wherein: The wire hook installation assembly also includes a sealing piece. The distal end of the outer tube is provided with a pipe opening, and the distal side wall of the outer tube is provided with a window connected to the interior of the outer tube. The sealing piece is inserted into the pipe opening at the distal end of the outer tube to seal the pipe opening.

6. The wire hook installation assembly according to claim 5, characterized in that: The sealing member includes a sealing head and a cannula connected to the sealing head, the sealing head protrudes to the outside of the outer tube, and the cannula is inserted into the inside of the tube mouth; the cannula is provided with a first plug-in portion, and the support seat is provided with a second plug-in portion, the support seat is inserted into the inside of the cannula, and the second plug-in portion and the first plug-in portion are plugged into and matched with each other.

7. The wire hook installation assembly according to claim 6, characterized in that: The cannula is interference fit with the tube mouth of the outer tube; and / or the outer wall of the plugging head is an arc-shaped surface or an elliptical surface; and / or the support seat is interference fit with the cannula; and / or the shape of the distal outer wall of the support seat is adapted to the shape of the inner wall of the plugging head.

8. The wire hook installation assembly according to claim 6, wherein: The first plug-in portion is an inserting port formed on the tube wall of the inserting tube; the second plug-in portion is an inserting block protruding from the outer wall of the supporting seat, and the inserting block is inserted and fixed in the inserting port.

9. The wire hook installation assembly according to claim 8, characterized in that: The wire hook installation assembly also includes a pin shaft, which passes through the support seat. A bayonet and a limit portion are formed at the edge of the plug interface. The limit portion is formed at the proximal end of the bayonet and is adjacent to the bayonet, and the pin shaft is locked in the bayonet.

10. The wire hook installation assembly according to claim 6, wherein: The support seat is formed with a first avoidance recess corresponding to the position of the puncture member of the stapler; the support seat is also formed with a second avoidance recess corresponding to the position of the push-pull mechanism of the stapler; the proximal tube wall of the cannula is formed with a first notch for avoiding the wire hook; the proximal tube wall of the cannula is also formed with a second notch for avoiding the push-pull mechanism.

11. A stapler, characterized in that: The suturing device comprises the wire hook mounting assembly according to any one of claims 1 to 10.

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