Stitching instrument and thread hook

Abstract

The utility model relates to a stitching instrument and a thread hook. The thread hook comprises a mounting base and at least two thread hooking claws. The installation base is used for being rotatably arranged on a thread hook supporting piece of the stitching instrument, all the thread hooking claws are connected to the installation base, and at least two thread hooking claws are arranged at intervals to form an interval space for a puncture piece of the stitching instrument to penetrate through during stitching. According to the thread hook, due to the fact that the thread hook is provided with the at least two thread hooking claws and is rotatably connected to the thread hook supporting piece through the installation base, during thread hooking, the at least two thread hooking claws are used for hooking the suture thread, the suture thread can be effectively prevented from slipping off from the thread hook, and reliability is improved. In addition, compared with the arrangement form of a single thread hooking claw in the prior art, the number of the thread hooking claws is increased, the structural strength can be improved, and therefore deformation and damage are not likely to happen.

Description

Technical Field

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

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

[0003] During the suturing process of the stapler in the related art, a thread hook is usually used to hook the suture thread to complete the tissue suturing operation. However, the suture thread is likely to slip off the thread hook, or is prone to deformation and damage after long-term use, thus resulting in the inability to normally perform its function of hooking the thread and reducing the surgical success rate. Summary of the Invention

[0004] Based on this, it is necessary to provide a stapler and a thread hook to address the problem that the suture thread is likely to slip off the thread hook or the thread hook is prone to deformation and damage after long-term use.

[0005] A thread hook, the thread hook includes:

[0006] A mounting base, the mounting base is used for rotatably setting on the thread hook support member of the stapler; and

[0007] At least two thread hooking claws, all the thread hooking claws are connected to the mounting base, and at least two of the thread hooking claws are spaced apart to form an interval space for the piercing member of the stapler to pass through during suturing.

[0008] In one embodiment, there are two thread hooking claws, and the two thread hooking claws are symmetrically arranged on both sides of the interval space.

[0009] In one embodiment, at least one hook thread groove is provided on each thread hooking claw.

[0010] In one embodiment, the hook thread grooves on each thread hooking claw are collinear.

[0011] In one embodiment, the thread hooking claw includes an opposite fixed end and a free end, and the fixed end is connected to the mounting base; the free end is provided as a tip.

[0012] In one embodiment, the cross-sectional area of the thread hooking claw shows a decreasing trend in the direction from the fixed end to the free end; and / or, the cross-sectional contour shape of the thread hooking claw in the direction from the fixed end to the free end is a polygon, a circle or an ellipse.

[0013] In one embodiment, the mounting seat includes a connecting portion and a swinging portion connected to the connecting portion. The connecting portion is used for rotatably setting on the thread hook support of the stapler, and the swinging portion is used for swinging around the connecting portion under the action of an external force to drive the thread hooking claw to reciprocally swing between a thread hooking position and a releasing position.

[0014] In one embodiment, the connecting portion includes a connecting column and a pin shaft for connecting with the thread hook support. The connecting column is provided with a first shaft hole penetrating through its opposite ends, and the connecting column is rotatably sleeved on the pin shaft through the first shaft hole.

[0015] In one embodiment, the swinging portion is configured as a swing arm. One end of the swing arm is connected to the connecting portion, and the other end of the swing arm is provided with a second shaft hole. A push rod for inputting swinging power can be inserted into the second shaft hole.

[0016] A stapler includes a thread hook support and the above-mentioned thread hook, and the mounting seat is rotatably arranged on the thread hook support.

[0017] The above-mentioned stapler and thread hook have at least two thread hooking claws and are rotatably connected to the thread hook support through a mounting seat. When hooking the thread, at least two thread hooking claws are used to hook the suture thread, which can effectively prevent the suture thread from slipping off the thread hook and improve the reliability. And because the above-mentioned spacing space is arranged corresponding to the position of the piercing member of the stapler, during the process of the piercing member of the stapler entering and withdrawing the needle, the piercing member of the stapler can smoothly penetrate into the spacing space to pierce the target tissue, and withdraw from the spacing space to complete the needle withdrawal operation. Moreover, the process of the thread hooking claw hooking the thread can facilitate hooking the suture thread. In addition, compared with the setting form of a single thread hooking claw in the related art, the number of thread hooking claws increases, which can improve the structural strength and thus is not easily deformed or damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective structure diagram of a thread hook according to an embodiment of the present application.

[0019] Figure 2 It is another perspective structure diagram of a thread hook according to an embodiment of the present application.

[0020] Figure 3 It is a cross-sectional view of the thread hook of a stapler in a thread hooking position according to an embodiment of the present application.

[0021] Figure 4 It is a cross-sectional view of the thread hook of a stapler in a releasing position according to an embodiment of the present application.

[0022] Figure 5 It is a structure diagram of the thread hook of a stapler in a thread hooking position according to an embodiment of the present application.

[0023] Figure 6 The structural diagram of the thread hook of a stapler according to an embodiment of the present application in the released position.

[0024] 10. Thread hook; 11. Mounting seat; 111. Connecting part; 1111. Connecting column; 1112. Pin shaft; 1113. First shaft hole; 112. Oscillating part; 1121. Second shaft hole; 12. Thread hooking claw; 121. Thread hooking groove; 13. Spacing; 14. Push rod; 20. Thread hook support; 30. Pushing and pulling mechanism; 31. Push-pull rod; 32. Moving block; 321. Moving hole; 40. Piercing part; 41. Thread passing hole; 50. Delivery tube; 51. Window. Detailed implementation manners

[0025] To make the above objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application 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.

[0026] Refer to Figures 1 to 6 , Figure 1 which shows a structural diagram of the thread hook 10 according to an embodiment of the present application from one perspective. Figure 2 which shows a structural diagram of the thread hook 10 according to an embodiment of the present application from another perspective. Figure 3 which shows a cross-sectional view of the thread hook 10 of the stapler according to an embodiment of the present application in the thread hooking position. Figure 4 which shows a cross-sectional view of the thread hook 10 of the stapler according to an embodiment of the present application in the released position. A thread hook 10 provided by an embodiment of the present application includes: a mounting seat 11 and at least two thread hooking claws 12. The mounting seat 11 is rotatably arranged on the thread hook support 20 of the stapler. Specifically, the mounting seat 11 is also connected to the pushing and pulling mechanism 30 of the stapler, and is switched between the released position and the thread hooking position under the drive of the pushing and pulling mechanism 30. All the thread hooking claws 12 are connected to the mounting seat 11. At least two thread hooking claws 12 form a spacing 13 therebetween, and the spacing 13 is for the piercing part 40 of the stapler to pass through during suturing.

[0027] Wherein, when the mounting seat 11 is in the released position, all the thread hooking claws 12 release the suture; when the mounting seat 11 is in the thread hooking position, all the thread hooking claws 12 hook the suture.

[0028] It should be noted that the "thread - hooking claw 12" can be "a part of the mounting base 11", that is, the "thread - hooking claw 12" and "the other parts of the mounting base 11" are integrally formed; or it can be an independent component separable from "the other parts of the mounting base 11", that is, the "thread - hooking claw 12" can be manufactured independently and then combined with "the other parts of the mounting base 11" to form a whole.

[0029] For the above - mentioned thread hook 10, since it has at least two thread - hooking claws 12 and is rotatably connected to the thread - hook support member 20 through the mounting base 11, when hooking the thread, the suture is hooked by at least two thread - hooking claws 12, which can effectively prevent the suture from slipping off the thread hook 10 and improve the reliability; and since the above - mentioned spaced - apart space 13 is arranged corresponding to the position of the piercing member 40 of the stapler, during the needle - inserting and needle - withdrawing processes of the piercing member 40 of the stapler, the piercing member 40 of the stapler can smoothly penetrate into the target tissue through the spaced - apart space 13 and withdraw from the spaced - apart space 13 to complete the needle - withdrawing operation. Moreover, the process of the thread - hooking claw 12 hooking the thread can facilitate hooking the suture. In addition, compared with the setting form of a single thread - hooking claw 12 in the related art, the number of thread - hooking claws 12 increases, which can improve the structural strength and thus is not easily deformed or damaged.

[0030] In one embodiment, there are two thread - hooking claws 12, and the two thread - hooking claws 12 are symmetrically distributed on the opposite sides of the piercing member 40. In this way, the number of thread - hooking claws 12 is small, making the volume and size of the thread hook 10 relatively small, so as to facilitate hooking the suture and prevent damage to the tissue caused by an excessive increase in volume and size when the number of thread - hooking claws 12 is too large. In addition, the two thread - hooking claws 12 are symmetrically arranged on both sides of the spaced - apart space 13. In this way, after hooking the suture, the force is relatively balanced, the stability is good, and the suture is not easily loosened. Of course, in this application, it is not excluded to set three or more thread - hooking claws. For example, multiple thread - hooking claws can be arranged in parallel, and a spaced - apart space is formed between adjacent two thread - hooking claws; or the thread - hooking claws can be divided into two groups, and the two groups of thread - hooking claws are combined and arranged in different orientations on the mounting base. Each group of thread - hooking claws is composed of two thread - hooking claws, and a spaced - apart space is formed between the two thread - hooking claws in each group of thread - hooking claws.

[0031] In some embodiments, the piercing member 40 includes, but is not limited to, a piercing needle. Wherein, a thread - passing hole 41 is provided on the piercing needle, and the suture is passed through the thread - passing hole 41 and penetrates into the target tissue along with the piercing needle to achieve suturing of the target tissue.

[0032] In one embodiment, at least one hook - shaped groove 121 is provided on each thread - hooking claw 12. In this way, when the thread - hooking claw 12 swings along with the thread hook 10, it is convenient to hook the suture through the hook - shaped groove 121. Specifically, the hook - shaped grooves 121 of each thread - hooking claw 12 are collinear. In this way, the suture can be respectively passed through the hook - shaped grooves 121 of each thread - hooking claw 12, and the reliability and stability are relatively high.

[0033] Among them, the thread-hooking claw 12 includes an opposite fixed end and a free end. The fixed end is connected to the mounting seat 11, and the free end is, for example, set as a tip, so as to facilitate hooking the suture. The thread-hooking groove 121 is, for example, formed in the middle part in the extending direction of the thread-hooking claw 12. After the suture is hooked at the free end, the suture moves along the thread-hooking claw 12 and is caught in the thread-hooking groove 121, which can stably hook the suture and prevent the suture from loosening.

[0034] Please refer to Figure 1 and Figure 2 , in an embodiment, the cross-sectional area of the thread-hooking claw 12 shows a decreasing trend in 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 12 connected to the mounting seat 11 is larger, with good load-bearing effect, and it can be firmly connected to the mounting seat 11 and is not easily deformed or damaged; the free end of the thread-hooking claw 12 is correspondingly pointed, so as to facilitate hooking the suture.

[0035] In an embodiment, the cross-sectional profile shape of the thread-hooking claw 12 in the direction away from the mounting seat 11 includes but is not limited to polygons, circles or ellipses. Among them, polygons include but are not limited to triangles, quadrilaterals, pentagons or hexagons, etc., which are specifically adjusted and set flexibly according to actual needs.

[0036] Please refer to Figures 1 to 4 , in an embodiment, the mounting seat 11 includes a connecting portion 111 and a swinging portion 112 connected to the connecting portion 111. The connecting portion 111 is used for rotatably arranging on the thread hook support member 20 of the stapler, and the swinging portion 112 is used for swinging around the connecting portion 111 under the action of an external force to drive the thread-hooking claw 12 to swing reciprocally between the thread-hooking position and the releasing position. Specifically, the swinging portion 112 is used for connecting to the pushing and pulling mechanism 30 of the stapler, and the swinging portion 112 swings back and forth under the drive of the pushing and pulling mechanism 30 to drive the connecting portion 111 to rotate.

[0037] It should be noted that the "swinging portion 112" can be "a part of the connecting portion 111", that is, the "swinging portion 112" and the "other part of the connecting portion 111" are integrally formed; or it can be an independent component separable from the "other part of the connecting portion 111", that is, the "swinging portion 112" can be independently manufactured and then combined with the "other part of the connecting portion 111" into a whole.

[0038] In one embodiment, the connecting portion 111 includes a connecting post 1111 and a pin shaft 1112 for connecting with the thread hook support member 20. The connecting post 1111 is provided with a first shaft hole 1113 penetrating through its opposite ends, and the connecting post 1111 is rotatably sleeved on the pin shaft 1112 through the first shaft hole 1113. In this way, during use, when the pushing and pulling mechanism 30 drives the swinging portion 112 to swing, the swinging portion 112 drives the connecting post 1111 to rotate on the pin shaft 1112, so as to realize the switching of the thread hooking claw 12 between the release position and the thread hooking position.

[0039] Specifically, all the thread hooking claws 12 are sequentially arranged on the outer wall of the connecting post 1111 along the axial direction of the connecting post 1111.

[0040] In one embodiment, the swinging portion 112 is configured as a swing arm. One end of the swing arm is connected to the connecting portion 111, and the other end of the swing arm is provided with a second shaft hole 1121. A push rod 14 for inputting swinging power can be inserted into the second shaft hole 1121. One end of the push rod 14 extending outside the second shaft hole 1121 is used for being inserted into the movable hole 321 of the pushing and pulling mechanism 30. Specifically, the pushing and pulling mechanism 30 includes a push-pull rod 31 and a moving block 32 connected to the push-pull rod 31. The movable hole 321 is formed on the moving block 32. The movable hole 321 includes, but is not limited to, a waist-shaped hole, a strip-shaped hole, etc. The end of the push rod 14 is inserted into the movable hole 321 and can move along the movable hole 321. Among them, the push-pull rod 31 can either move back and forth under manual drive or move back and forth under the drive of a power mechanism such as a lead screw motor, a cylinder, etc. Here, it is not limited, and it can be flexibly adjusted and set according to actual needs. When the push-pull rod 31 drives the moving block 32 to reciprocate, the moving block 32 drives the push rod 14 to act, and the push rod 14 moves along the movable hole 321 accordingly and drives the swing arm to swing, so as to realize the switching of the thread hooking claw 12 between the release position and the thread hooking position.

[0041] Please refer to Figures 1 to 4 , in one embodiment, a stapler, the stapler includes a thread hook support member 20 and a thread hook 10 as in any of the above embodiments. The mounting seat 11 is rotatably arranged on the thread hook support member 20. Specifically, the stapler further includes a pushing and pulling mechanism 30, and the pushing and pulling mechanism 30 is connected to the mounting seat 11 and is used for driving the mounting seat 11 to move to the release position or the thread hooking position.

[0042] The above suture device, since it has at least two wire-hooking claws 12 and is rotatably connected to the wire hook support member 20 through the mounting seat 11, when hooking the suture, at least two wire-hooking claws 12 are used to hook the suture, which can effectively prevent the suture from slipping off the wire hook 10 and improve the reliability; and since the above-mentioned spacing space 13 is arranged corresponding to the puncturing member 40 of the suture device, during the process of the puncturing member 40 of the suture device entering and withdrawing the needle, the puncturing member 40 of the suture device can smoothly penetrate into the target tissue from the spacing space 13 and withdraw from the spacing space 13 to complete the needle withdrawal operation, and the process of the wire-hooking claws 12 hooking the suture can facilitate hooking the suture. In addition, compared with the setting form of a single wire-hooking claw 12 in the related art, the number of wire-hooking claws 12 increases, which can improve the structural strength and thus is not easily deformed or damaged.

[0043] In some embodiments, the suture device further includes a delivery tube 50 and a puncturing member 40. The wire hook support member 20 and the wire hook 10 are both installed at the distal end of the delivery tube 50. Specifically, the connecting columns 1111 of the wire hook 10 are respectively abutted against the opposite two inner side walls of the delivery tube 50 at the opposite two end faces to limit the lateral movement of the wire hook 10 inside the delivery tube 50 and improve the stability of the wire hook 10 inside the delivery tube 50. Optionally, the opposite ends of the pin shaft 1112 are respectively connected and fixed to the opposite two inner side walls of the delivery tube 50 to prevent the wire hook 10 from moving along the axial direction Z of the delivery tube 50. In addition, the puncturing member 40 is movably arranged inside the delivery tube 50. Further, a window 51 is formed on the delivery tube 50, and the target tissue can enter the inside of the window 51 under the suction of negative pressure. During the suture operation, the puncturing member 40 and the wire hook 10 cooperate with each other to complete the suture operation of the target tissue.

[0044] It should be noted that the related art in the background technology of the present application is only for facilitating the description of the technical problems to be solved by the present application, and this related art does not necessarily belong to the prior art.

[0045] In addition, if there are terms such as "first" and "second", these terms are only 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 clearly and specifically defined.

[0046] In this application, unless otherwise clearly specified or limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] 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-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0048] The above-described embodiments only represent several implementation manners of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting 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 deformations and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application should be subject to the appended claims.

Claims

1. A wire hook, characterized in that, The wire hook includes: a mounting base configured to be rotatably disposed on a wire hook support member of a stapler; and at least two wire - hooking claws, all of the wire - hooking claws being connected to the mounting base, and at least two of the wire - hooking claws being spaced apart to form a spaced - apart space for a piercing member of the stapler to pass through during suturing.

2. The wire hook according to claim 1, characterized in that, There are two wire - hooking claws, and the two wire - hooking claws are symmetrically arranged on both sides of the spaced - apart space.

3. The wire hook according to claim 1, wherein At least one wire - hooking groove is provided on each wire - hooking claw.

4. The wire hook according to claim 3, wherein The wire - hooking grooves on each wire - hooking claw are collinear.

5. The wire hook according to claim 1, characterized in that, Each wire - hooking claw includes a fixed end and a free end which are opposite to each other, the fixed end is connected to the mounting base; the free end is provided as a tip.

6. The wire hook according to claim 5, characterized in that, The cross - sectional area of the wire - hooking claw shows a decreasing trend in the direction from the fixed end to the free end; and / or, the cross - sectional contour shape of the wire - hooking claw in the direction from the fixed end to the free end is a polygon, a circle or an ellipse.

7. The wire hook according to claim 1, characterized in that, The mounting base includes a connecting portion and a swinging portion connected to the connecting portion, the connecting portion is configured to be rotatably disposed on the wire hook support member of the stapler, and the swinging portion is configured to swing around the connecting portion under an external force to drive the wire - hooking claws to swing reciprocally between a wire - hooking position and a releasing position.

8. The wire hook according to claim 7, wherein The connecting portion includes a connecting column and a pin shaft for connecting to the wire hook support member, the connecting column is provided with a first shaft hole penetrating through its opposite ends, and the connecting column is rotatably sleeved on the pin shaft through the first shaft hole.

9. The wire hook according to claim 7, characterized in that, The swinging portion is provided as a swing arm, one end of the swing arm is connected to the connecting portion, and the other end of the swing arm is provided with a second shaft hole, and a push rod for inputting swinging power can be inserted into the second shaft hole.

10. A stapler, characterized in that, The stapler includes a wire hook support member and the wire hook according to any one of claims 1 to 9, and the mounting base is rotatably disposed on the wire hook support member.

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