Stitching instrument

Abstract

The utility model relates to a stitching instrument. The stitching instrument comprises an outer tube, a thread hook and a driving rod. The wire hook is arranged in the far end of the outer tube in a swinging mode, and the wire hook comprises a wire hooking claw. The driving rod is arranged in the outer pipe and connected with the thread hook, and the driving rod can move back and forth in the axial direction of the outer pipe to push the thread hook to swing back and forth so that the thread hooking claw can swing back and forth between the thread hooking position and the thread loosening position. When the driving rod acts, the thread hook can be driven to swing in a reciprocating mode, and therefore the thread hooking claw can move from the thread loosening position to the thread hooking position to hook the suture line and can move from the thread hooking position to the thread loosening position to loosen the suture line. Therefore, the thread hooking device can be conveniently assembled in the outer pipe to complete thread hooking and thread loosening.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and particularly to a stapler. Background Art

[0002] Suturing is to align or reconstruct the channels of tissues and organs that have been incised or traumatized and fractured, and restore their functions. It is a basic condition for ensuring good healing and one of the important basic surgical operation techniques. Tissues and organs in different parts need to be sutured in different ways.

[0003] The stapler in the related art includes an outer tube and a thread-hooking assembly disposed inside the outer tube. During the suturing process, the thread-hooking assembly is usually used to hook the suture thread to complete the suturing operation of the tissue. In order to reduce the damage to the tissue and improve the postoperative rehabilitation effect, the inner diameter of the surgical channel should be as small as possible, so that the diameter of the outer tube is correspondingly controlled within a preset range. However, when the diameter of the outer tube is small, since the volume of the thread-hooking assembly in the related art is usually large, it is difficult to assemble it inside the outer tube, or it is difficult to complete the thread-hooking action and the thread-releasing action inside the outer tube. Summary of the Invention

[0004] Based on this, it is necessary to overcome the defects of the prior art and provide a stapler that can complete the thread-hooking action and the thread-releasing action inside the outer tube.

[0005] A stapler, comprising:

[0006] An outer tube;

[0007] A thread hook, which is reciprocally swingably disposed inside the distal end of the outer tube, and the thread hook includes a thread-hooking claw; and

[0008] A drive rod, which is disposed inside the outer tube and connected to the thread hook. The drive rod can reciprocally move along the axial direction of the outer tube and push the thread hook to reciprocally swing, so that the thread-hooking claw reciprocally swings between a thread-hooking position and a thread-releasing position.

[0009] In one embodiment, the thread hook further includes a swinging portion and a rotating portion. The rotating portion is connected between the swinging portion and the thread-hooking claw. The rotating portion is swingably connected to the distal end of the outer tube, and the swinging portion is connected to the drive rod.

[0010] In one embodiment, the drive rod is provided with a first moving hole extending along a first direction X, and the first direction X intersects with the pushing direction Z of the drive rod. The swinging portion is connected with a first connecting portion extending into the first moving hole. When the drive rod pushes the thread hook to swing around the rotating portion along the pushing direction Z, the first connecting portion synchronously moves along the first direction X in the first moving hole; or,

[0011] The swinging part is provided with a second movable hole, the driving rod is connected with a second connecting part extending into the second movable hole, and when the driving rod pushes the wire hook to swing around the rotating part along the pushing direction Z, the second connecting part moves synchronously in the second movable hole.

[0012] In one embodiment, the swing portion is configured as a swing arm, one end of the swing arm is connected to the rotating portion, and the other end of the swing arm is connected to the driving rod.

[0013] In one embodiment, the swing arm and the driving rod are arranged adjacent to each other in a direction parallel to the rotation axis of the rotating part, and the first movable hole is formed on the side wall of the driving rod facing the swing arm. The first connecting part includes a push rod penetrated through the swing arm, and the extension direction of the push rod is parallel to the rotation axis direction of the rotating part. The push rod can be movably inserted into the first movable hole along a first direction X.

[0014] In one embodiment, a chamfer is formed at one end of the swing arm away from the rotating portion and at a side away from the driving rod.

[0015] In one embodiment, the driving rod includes a pushing arm and a pushing head connected to the distal end of the pushing arm; the first movable hole is formed on the pushing head, and the pushing head and the swing arm are arranged adjacent to each other in a direction parallel to the rotation axis of the rotating part.

[0016] In one of the embodiments, the push arm is used to slide with the inner wall of the outer tube; the push arm is also formed with a slide groove for adapting to the shape of the outer wall of the suction tube and slidingly matching.

[0017] In one embodiment, the wire hook includes at least two wire hook claws, and at least two of the wire hook claws are spaced apart to form a spacing space for the piercing member of the stapler to pass through during suturing.

[0018] In one of the embodiments, a window is formed on the side wall of the outer tube; when the mouth wall of the window abuts against the wire hook claw, the wire hook is stopped from rotating along the first rotation direction; a rotation limiting step is provided on the inner wall of the distal end of the outer tube, and the rotation limiting step is used to stop the wire hook from rotating along the second rotation direction when it abuts against the driving rod.

[0019] The above-mentioned suture device can drive the thread hook to swing back and forth when the driving rod is in motion, so that the thread hook claw can move from the thread loosening position to the thread hooking position to hook the suture thread, and can also move from the thread hooking position to the thread loosening position to release the suture thread. It can be seen that it is easy to assemble inside the outer tube to complete the thread hooking action and the thread loosening action. Brief Description of the Drawings

[0020] Figure 1 The structural diagram of a stapler according to an embodiment of the present application.

[0021] Figure 2 is Figure 1 The exploded view of the partial structure at A of the shown structure.

[0022] Figure 3 The structural diagram of the drive rod in a stapler according to an embodiment of the present application.

[0023] Figure 4 is Figure 1 The structural diagram in a working state of the partial structure at A of the shown structure.

[0024] Figure 5 is Figure 1 The structural diagram in another working state of the partial structure at A of the shown structure.

[0025] Figure 6 is Figure 1 The structural diagram in yet another working state of the partial structure at A of the shown structure.

[0026] 10. Thread hook; 11. Thread hooking claw; 12. Swing part; 121. Push rod; 122. Chamfer; 123. First shaft hole; 13. Rotating part; 131. Pin shaft; 132. Second shaft hole; 20. Drive rod; 21. Push arm; 211. Slide groove; 22. Push head; 221. First movable hole; 30. Outer tube; 31. Window; 32. Rotation limiting step; 40. Suction tube; 50. Puncture piece; 51. Thread passing hole; 60. Target tissue. Detailed Description of the Embodiments

[0027] To make the above objects, features, and advantages of the present application more obvious and understandable, the following detailed description of the specific embodiments of the present application will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0028] Refer to Figures 1 to 4 , Figure 1 which shows the structural diagram of a stapler according to an embodiment of the present application. Figure 2 shows Figure 1 the exploded view of the partial structure at A of the shown structure. Figure 3 which shows the structural diagram of the drive rod 20 in a stapler according to an embodiment of the present application. Figure 4 shows Figure 1The structural diagram of the local structure at position A in the shown structure in a working state. A stapler provided by an embodiment of the present application, the stapler includes: an outer tube 30, a thread hook 10, and a driving rod 20. The thread hook 10 is reciprocally swingably disposed inside the distal end of the outer tube 30, and the thread hook 10 includes a thread-catching claw 11. The driving rod 20 is disposed inside the outer tube 30 and is connected to the thread hook 10. The driving rod 20 can reciprocally move along the axial direction of the outer tube 30 and push the thread hook 10 to reciprocally swing, so that the thread-catching claw 11 reciprocally swings between a thread-catching position and a thread-releasing position.

[0029] Specifically, the thread hook 10 further includes a swinging portion 12 and a rotating portion 13 connected between the thread-catching claw 11 and the swinging portion 12. The rotating portion 13 is connected between the swinging portion 12 and the thread-catching claw 11, and the rotating portion 13 is swingably connected to the distal end of the outer tube 30. The swinging portion 12 is connected to the driving rod 20. Thus, the driving rod 20 can drive the swinging portion 12 to swing around the rotating portion 13 to drive the thread-catching claw 11 to reciprocally swing between a thread-catching position and a thread-releasing position. Among them, the thread-catching position is as Figure 4 or Figure 6 shown, and the thread-releasing position is as Figure 5 shown.

[0030] For the above-mentioned stapler, when the driving rod 20 acts, it can drive the swinging portion 12 to swing around the rotating portion 13, so that the thread-catching claw 11 can move from the thread-releasing position to the thread-catching position to catch the suture thread, as Figures 5 to 6 shown; and it can realize that the thread-catching claw 11 moves from the thread-catching position to the thread-releasing position to release the suture thread, that is, to make the thread-catching claw 11 rotate to the position as Figure 5 shown. Thus, it can be seen that it is convenient to complete the thread-catching action and the thread-releasing action inside the outer tube 30 during assembly.

[0031] Please refer to Figures 1 to 4 , in some embodiments, the driving rod 20 is provided with a first moving hole 221 extending along a first direction X. The first direction X intersects with the pushing direction Z of the driving rod 20. The swinging portion 12 is connected with a first connecting portion extending into the first moving hole 221. When the driving rod 20 pushes the thread hook 10 to swing around the rotating portion 13 along the pushing direction Z, the first connecting portion synchronously moves along the first direction X in the first moving hole 221. Specifically, the pushing direction Z of the driving rod 20 is parallel to the axial direction of the outer tube 30. When the driving rod 20 reciprocally pushes and pulls along the pushing direction Z, the first connecting portion can synchronously move along the first direction X in the first moving hole 221, so as to be smoothly driven to swing by the driving rod 20. During the process of the driving rod 20 pushing to drive the thread hook 10 to switch between the thread-catching position and the thread-releasing position, it will not interfere with the swinging portion 12 to cause a jamming failure, and the overall structure layout is compact and occupies a small space.

[0032] Of course, in some alternative solutions, there is no need to provide the first movable hole 221 on the driving rod 20. Instead, for example, a second movable hole is provided on the swinging portion 12. The driving rod 20 is connected with a second connecting portion extending into the second movable hole 221. When the driving rod 20 pushes the thread hook 10 to swing around the rotating portion 13 along the pushing direction Z, the second connecting portion moves synchronously in the second movable hole. In this way, when the driving rod 20 reciprocally pushes and pulls along the pushing direction Z, the second connecting portion can move synchronously in the second movable hole. During the process of the driving rod 20 pushing to drive the thread hook 10 to switch between the thread catching position and the thread releasing position, there will be no interference with the swinging portion 12 resulting in a jamming failure, and the overall structural layout is compact, occupying less space.

[0033] In addition, in some alternative solutions, there is no need to provide the first movable hole 221 and the second movable hole in the above-mentioned embodiments. The distal end of the driving rod 20 is connected to the swinging portion 12 through a movable member, such as a chain, a rope, an elastic member, a link assembly, etc. In this way, when the driving rod 20 moves back and forth along its pushing direction X, it can also drive the swinging portion 12 to swing back and forth.

[0034] In some embodiments, the first movable hole 221 provided on the driving rod 20 can be set as a blind hole or a through hole; it can be set as a hole with a closed perimeter or a hole with a non-closed perimeter; as long as it can satisfy that when the driving rod 20 pushes and pulls, the connecting portion of the swinging portion 12 for connecting the driving rod 20 can move synchronously along the first direction X in the first movable hole 221 for avoidance. In addition, the first movable hole 221 can be set as an oval hole, a strip hole, a rectangular hole, or a hole with other irregular shapes. The specific setting can be flexibly adjusted according to actual needs and is not limited herein. The second movable hole provided on the swinging portion 12 is similar to the setting method of the first movable hole 221 and will not be elaborated herein.

[0035] In some embodiments, the included angle between the first direction X and the pushing direction Z includes, but is not limited to, 30° to 120°, specifically, for example, 30°, 60°, 90°, 120°, or 150°, etc. The specific value can be flexibly adjusted according to actual needs and is not limited herein.

[0036] In order to ensure the structural strength of the thread hook 10, in this embodiment, a first movable hole 221 extending along the first direction X is specifically provided on the driving rod 20. In this way, there is no need to provide a second movable hole extending along the first direction X on the swinging portion 12, thereby improving the structural strength of the swinging portion 12 and avoiding deformation and damage of the swinging portion 12 due to insufficient structural strength during the movement process.

[0037] In one embodiment, the swinging part 12 is configured as a swinging arm. One end of the swinging arm is connected to the rotating part 13, and the other end of the swinging arm is connected to the driving rod 20.

[0038] Based on the foregoing embodiment, the swinging arm and the driving rod 20 are arranged adjacent to each other along a direction parallel to the rotation axis of the rotating part 13. A first moving hole 221 is formed on the side wall of the driving rod 20 facing the swinging arm. The first connecting part includes a push rod 121 inserted through the swinging arm. The extending direction of the push rod 121 is parallel to the rotation axis of the rotating part 13. The push rod 121 is movably inserted into the first moving hole 221 along the first direction X. In this way, on the one hand, when the driving rod 20 reciprocates along the pushing direction Z, the driving rod 20 drives the push rod 121 to move. The push rod 121 can move adaptively along the first moving hole 221 and synchronously drive the swinging arm to swing, so as to realize the switching of the thread hook 10 between the thread loosening position and the thread hooking position. On the other hand, the swinging arm and the driving rod 20 are arranged adjacent to each other along a direction parallel to the rotation axis of the rotating part 13. Compared with the arrangement along the extending direction of the swinging arm, the internal space of the outer tube 30 can be reasonably utilized, so that under the same internal space of the outer tube 30, there is enough space to arrange the thread hook 10. The volume size of the thread hook 10 can be increased, thereby improving the structural strength of the thread hook 10, enhancing the hooking stability and reliability of the thread hook 10, preventing the structural strength from becoming smaller due to the small volume size of the thread hook 10 and resulting in force damage defects, and preventing the thread hook 10 from being unable to rotate flexibly due to insufficient internal space size of the outer tube 30.

[0039] It should be noted that the direction of the rotation axis of the rotating part 13 is also the second direction. Specifically, for example, the second direction is respectively perpendicular to the first direction X and the pushing direction Y.

[0040] In some embodiments, the cross-section of the push rod 121 along its extending direction includes but is not limited to being circular. In this way, when the push rod 121 moves along the first direction X in the first moving hole 221, it is not easy to interfere with the driving rod 20 and cause a jamming failure, thereby improving the swinging stability and reliability of the thread hook 10. Of course, the cross-section of the push rod 121 along its extending direction can also be, for example, rectangular. In order to avoid interference between the push rod 121 and the driving rod 20 when the push rod 121 moves along the first moving hole 221 and cause a jamming failure, it is only necessary to rotatably arrange the push rod 121 on the swinging arm.

[0041] Optionally, a first shaft hole 123 is provided at the end of the swinging arm, and the push rod 121 is rotatably arranged in the first shaft hole 123.

[0042] Please refer to Figure 2In one embodiment, a chamfer 122 is formed on one end of the swing arm away from the rotating portion 13 and away from the driving rod 20. In this way, when the outer tube 30 is a circular tube, since a chamfer 122 is formed on one end of the swing arm away from the rotating portion 13 and away from the driving rod 20, the shape of the chamfer 122 is adapted to the inner wall of the outer tube 30, so that the swing arm can swing more flexibly inside the outer tube 30, avoiding interference with the outer tube 30 and causing a jamming fault, and reducing wear, and at the same time, the volume size of the wire hook 10 can be increased to a certain extent, thereby improving the stability and reliability of the wire hook 10.

[0043] See also Figures 1 to 4 In one embodiment, the driving rod 20 includes a pushing arm 21 and a pushing head 22 connected to the distal end of the pushing arm 21. A first movable hole 221 is formed on the pushing head 22, and the pushing head 22 and the swing arm are arranged adjacent to each other in a direction parallel to the rotation axis of the rotating part 13. The pushing arm 21 is used to slide with the inner wall of the outer tube 30, and the pushing arm 21 is also formed with a slide groove 211 for adapting to and sliding with the outer wall shape of the suction tube 40. In this way, when the driving rod 20 is working, since the pushing arm 21 not only slides and fits with the outer tube 30, but also slides and fits with the suction tube 40, the driving rod 20 can stably and smoothly move along the pushing direction Z; in addition, since the driving rod 20 is configured to include the pushing arm 21 that slides with the outer tube 30 and the pushing head 22 that cooperates with the swing arm, the structure inside the outer tube 30 is compact and occupies little space.

[0044] In one embodiment, the thread hook 10 includes at least two thread hook claws 11, and the at least two thread hook claws 11 are spaced apart to form a space for the piercing member 50 of the suturing device to pass through during suturing.

[0045] When the rotating part 13 is located at the thread-loosening position, all the thread-hooking claws 11 release the suture thread; when the rotating part 13 is located at the thread-hooking position, all the thread-hooking claws 11 hook the suture thread.

[0046] It should be noted that the "thread hooking claw 11 and the swinging part 12" can be "a part of the rotating part 13", that is, the "thread hooking claw 11 and the swinging part 12" and the "other parts of the rotating part 13" are manufactured as one piece; it can also be an independent component separable from the "other parts of the rotating part 13", that is, the "thread hooking claw 11 and the swinging part 12" can be manufactured independently and then combined with the "other parts of the rotating part 13" into a whole.

[0047] Since there are at least two thread - hooking claws 11, and they are swingably connected to the thread - hook 10 support through a mounting base, when hooking the thread, the suture is hooked by at least two thread - hooking claws 11, which can effectively prevent the suture from slipping off the thread - hook 10, improving the reliability. In addition, compared with the setting form of a single thread - hooking claw 11 in the related art, the number of thread - hooking claws 11 increases, which can improve the structural strength and thus is not easily deformed or damaged.

[0048] In a specific embodiment, there are two thread - hooking claws 11. In this way, the number of thread - hooking claws 11 is small, making the volume size of the thread - hook 10 relatively small, so that it is convenient to hook the suture and prevent damage to tissues caused by an increase in volume size when the number of thread - hooking claws 11 is too large. In addition, the two thread - hooking claws 11 are symmetrically arranged on both sides of the spaced - apart space. In this way, after hooking the suture, the force is relatively balanced, the stability is good, and the suture is not easily loosened.

[0049] In an embodiment, the spaced - apart space is correspondingly arranged at the position of the puncturing member 50 of the stapler. During the needle - inserting and needle - withdrawing processes of the puncturing member 50 of the stapler, the puncturing member 50 of the stapler can smoothly penetrate into the target tissue 60 through the spaced - apart space between the two thread - hooking claws 11 and withdraw from the spaced - apart space to complete the needle - withdrawing operation. In this way, the two thread - hooking claws 11 are respectively located on opposite sides of the puncturing member 50, and it is convenient to hook the suture when the thread - hooking claws 11 rotate from the thread - releasing position to the thread - hooking position.

[0050] In an embodiment, at least one hook - shaped groove is provided on each thread - hooking claw 11. In this way, when the thread - hooking claw 11 swings with the thread - hook 10, it is convenient to hook the suture through the hook - shaped groove. Specifically, the hook - shaped grooves of the respective thread - hooking claws 11 are collinear. In this way, the suture can be respectively threaded through the hook - shaped grooves of the respective thread - hooking claws 11, and the reliability and stability are relatively high.

[0051] Among them, the thread - hooking claw 11 includes an opposite fixed end and a free end. The fixed end is connected to the mounting base, and the free end is, for example, set as a tip, so as to facilitate hooking the suture. The hook - shaped groove is, for example, formed in the middle part in the extending direction of the thread - hooking claw 11. After the suture is hooked at the free end, the suture moves along the thread - hooking claw 11 and is caught in the hook - shaped groove, which can stably hook the suture and prevent the suture from loosening.

[0052] In an embodiment, the cross - sectional area of the thread - hooking claw 11 shows a decreasing trend along the direction from the fixed end to the free end. In this way, the cross - sectional area of the end of the thread - hooking claw 11 connected to the mounting base is larger, and the load - bearing effect is good, so it can be firmly connected to the mounting base and is not easily deformed or damaged; the free end of the thread - hooking claw 11 is correspondingly pointed, so as to facilitate hooking the suture.

[0053] In one embodiment, the cross-sectional profile shape of the wire-hooking claw 11 in the direction away from the mounting base includes, but is not limited to, a polygon, a circle, or an ellipse. Among them, the polygon includes, but is not limited to, a triangle, a quadrilateral, a pentagon, a hexagon, etc., which can be flexibly adjusted and set according to actual needs.

[0054] In one embodiment, the rotating part 13 includes a connecting column and a pin shaft 131 connected to the outer tube 30. The connecting column is provided with a second shaft hole 132 penetrating through its opposite ends, and the connecting column is rotatably sleeved on the pin shaft 131 through the second shaft hole 132. In this way, during use, when the driving rod 20 drives the swinging part 12 to swing, the swinging part 12 drives the connecting column to rotate on the pin shaft 131, so as to realize the switching of the wire-hooking claw 11 between the wire-releasing position and the wire-hooking position.

[0055] Specifically, all the wire-hooking claws 11 are sequentially arranged on the outer wall of the connecting column along the axial direction of the connecting column.

[0056] In one embodiment, the driving rod 20 can move back and forth either under manual driving or under the driving of a power mechanism such as a lead screw motor or a cylinder, which is not limited here and can be flexibly adjusted and set according to actual needs.

[0057] In one embodiment, the pushing arm 21 of the driving rod 20 is slidably fitted with the inner wall of the outer tube 30. The stapler further includes a suction pipe 40 disposed inside the outer tube 30. The pushing arm 21 is further formed with a sliding groove 211 adapted to and slidably fitted with the outer wall of the suction pipe 40.

[0058] In one embodiment, a window 31 is formed on the side wall of the outer tube 30. The target tissue 60 can enter the inside of the window 31 under the negative pressure suction of the suction pipe 40, as Figures 4 to 6 shown. Specifically, when the mouth wall of the window 31 abuts against the wire-hooking claw 11, the wire hook 10 is stopped from rotating in the first rotation direction. Please refer to Figure 4 and Figure 6 . In addition, a rotation limiting step 32 is provided on the inner wall of the distal end of the outer tube 30. The rotation limiting step 32 is used to stop the wire hook 10 from rotating in the second rotation direction when abutting against the driving rod 20. Please refer to Figure 5 . In this way, when the wire hook 10 rotates to the wire-hooking position, the wire-hooking claw 11 abuts against the mouth wall of the window 31, which can limit the wire hook 10 from continuing to rotate in the first rotation direction, so that the wire hook 10 is stably arranged at the wire-hooking position; when the wire hook 10 rotates to the wire-releasing position, the driving rod 20 abuts against the rotation limiting step 32, which can limit the wire hook 10 from continuing to rotate in the second rotation direction, so that the wire hook 10 is stably arranged at the wire-releasing position. Among them, the first rotation direction is the rotation direction from the wire-releasing position to the wire-hooking position, and the second rotation direction is the rotation direction from the wire-hooking position to the wire-releasing position.

[0059] In some embodiments, the stapler further includes a piercing member 50. The piercing member 50 includes, but is not limited to, a piercing needle. Among them, a thread-passing hole 51 is provided on the piercing needle, and a suture is passed through the thread-passing hole 51 and penetrates into the target tissue 60 along with the piercing needle to achieve suturing of the target tissue 60.

[0060] Optionally, the opposite ends of the pin shaft 131 are respectively connected and fixed to the opposite two side walls of the outer tube 30 to prevent the thread hook 10 from moving along the axial direction Z of the outer tube 30. In addition, the piercing member 50 is movably disposed within the outer tube 30, and during the suturing operation, the piercing member 50 and the thread hook 10 cooperate with each other to achieve the suturing operation of the target tissue 60.

[0061] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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 construed as a limitation to the present application.

[0062] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0063] In the present application, unless otherwise clearly specified and limited, if there are terms such as "mounted", "connected", "connected to", "fixed", etc., these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0064] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or similar descriptions, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0065] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If any, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

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

[0067] The above-described embodiments only represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of this patent application shall be subject to the appended claims.

Claims

1. A stapler, characterized in that, include: External pipe; A wire hook, which is reciprocatingly swingably disposed inside the distal end of the outer tube, and includes a wire hook claw; and A driving rod is arranged in the outer tube and connected to the wire hook. The driving rod can reciprocate along the axial direction of the outer tube and push the wire hook to swing back and forth, so that the wire hook claw swings back and forth between a wire hooking position and a wire loosening position.

2. The stapler according to claim 1, wherein The wire hook further comprises a swinging part and a rotating part, wherein the rotating part is connected between the swinging part and the wire hooking claw, the rotating part is swingably connected to the distal end of the outer tube, and the swinging part is connected to the driving rod.

3. The stapler according to claim 2, characterized in that, The driving rod is provided with a first movable hole extending along a first direction X, the first direction X intersects with a pushing direction Z of the driving rod, the swinging portion is connected with a first connecting portion extending into the first movable hole, and when the driving rod pushes the wire hook to swing around the rotating portion along the pushing direction Z, the first connecting portion simultaneously moves in the first movable hole along the first direction X; or The swinging part is provided with a second movable hole, the driving rod is connected with a second connecting part extending into the second movable hole, and when the driving rod pushes the wire hook to swing around the rotating part along the pushing direction Z, the second connecting part moves synchronously in the second movable hole.

4. The stapler according to claim 3, wherein, The swing part is configured as a swing arm, one end of the swing arm is connected to the rotating part, and the other end of the swing arm is connected to the driving rod.

5. The stapler according to claim 4, wherein The swing arm and the driving rod are arranged adjacent to each other in a direction parallel to the rotation axis of the rotating part. The driving rod is provided with the first movable hole on the side wall facing the swing arm. The first connecting part includes a push rod passing through the swing arm. The extension direction of the push rod is parallel to the rotation axis direction of the rotating part. The push rod can be movably inserted into the first movable hole along a first direction X.

6. The stapler according to claim 5, characterized in that, A chamfer is formed on one end of the swing arm away from the rotating part and on a side away from the driving rod.

7. The stapler according to claim 5, wherein The driving rod includes a pushing arm and a pushing head connected to the distal end of the pushing arm; the first movable hole is formed on the pushing head, and the pushing head and the swing arm are adjacently arranged along a direction parallel to the rotation axis of the rotating part.

8. The stapler according to claim 7, characterized in that, The push arm is used for slidingly cooperating with the inner wall of the outer tube; the push arm is also formed with a slide groove for adapting to the shape of the outer wall of the suction tube and slidingly cooperating with it.

9. The stapler according to claim 1, wherein, The thread hook comprises at least two thread hook claws, and at least two of the thread hook claws are spaced apart to form a spacing space for the piercing member of the stapler to pass through during suturing.

10. The stapler according to any one of claims 1-9, characterized in that, A window is formed on the side wall of the outer tube; when the mouth wall of the window abuts and cooperates with the wire hook claw, the wire hook is stopped from rotating along the first rotation direction; a rotation limiting step is provided on the inner wall of the distal end of the outer tube, and the rotation limiting step is used to stop the wire hook from rotating along the second rotation direction when it abuts and cooperates with the driving rod.

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