Suture control device and suture system

Abstract

A suture control device and a suturing device system, the suture control device includes: a suture and a thread pushing assembly. The end of the suture is used to insert into the puncture needle, and the suture located in the puncture needle is provided with an abutment joint. The thread pushing assembly includes a thread pushing wire, one end of which abuts against the abutment joint, and the other end of which is located outside the puncture needle, and the thread pushing wire is used to push the suture. The designed suture control device, through the cooperation of the thread pushing wire and manpower, can timely sense the progress of the thread pushing wire through manpower during the thread pushing process, so as to facilitate timely stopping, avoid continuing to push the thread forward when the thread pushing is not smooth, and avoid the occurrence of surgical failure caused by the accumulation or knotting of the suture in the puncture needle, thereby improving the accuracy and efficiency of thread pushing.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a suture control device and a suture system. Background Art

[0002] The foramen ovale is an open area in the atrial septum, located at the junction of the primary septum and the secondary septum in the embryonic period. Approximately 20%-25% of adults have incompletely closed foramen ovale, and patent foramen ovale is significantly correlated with a variety of cardiovascular and cerebrovascular diseases. Therefore, there is a large group of people who need foramen ovale closure surgery.

[0003] In recent years, occlusion surgery has been frequently used to occlude the foramen ovale. Currently, there are also related technical studies that can use interventional suturing to treat patent foramen ovale disease. The suturing device used for interventional treatment of foramen ovale generally includes a needle ejection device and a suture control device. Among them, the needle ejection device is used to achieve the penetration or recovery of the puncture needle, and the suture control device is used to achieve suture delivery.

[0004] The suture control device currently used uses multiple gears to realize the delivery of multiple sutures. Under this method, the sutures are delivered mechanically and the status of the sutures cannot be sensed. For example, when the suture encounters resistance and cannot be advanced, continuing to use the gear structure to push the suture will cause the suture to bend inside the puncture needle, and the suture cannot be pushed out of the puncture needle, resulting in surgical failure, affecting the foramen ovale closure surgery or reducing the efficiency of the foramen ovale closure surgery. Summary of the Invention

[0005] The present application provides a suture control device and a suture system, the main purpose of which is to improve the accuracy and efficiency of suture pushing.

[0006] An embodiment of the present application provides a suture control device, comprising:

[0007] a suture, the end of which is used to be inserted into the puncture needle, and the suture located in the puncture needle is provided with an abutment head; and

[0008] The push wire assembly comprises a push wire, one end of which abuts against the abutment head, and the other end of which is located outside the puncture needle. The push wire is used to push the suture.

[0009] In which, the pushing wire assembly also includes a first tube body and a second tube body, one end of the pushing wire is a pushing wire end, and the other end of the pushing wire is a free end, the first tube body and the second tube body are both sleeved on the pushing wire between the pushing wire end and the free end, the first tube body is located on the side close to the pushing wire end, and the second tube body is located on the side away from the pushing wire end, the first tube body and the pushing wire are fixedly connected, and the second tube body and the pushing wire are movably connected.

[0010] The device further comprises a handle, an adapter and a guide tube, wherein the handle is provided with an adapter groove, the adapter is provided with a first adapter hole and a second adapter hole connected to each other along the axial direction, the first adapter hole is used for fixed connection with the puncture needle, and one end of the guide tube is fixed in the second adapter hole;

[0011] A portion of the first tube body close to the wire-pushing end is movably placed in the guide tube, the second tube body and the wire-pushing wire including the free end are located outside the handle, and the adapter groove is used to fix the second tube body;

[0012] The suture, wire pushing assembly, adapter, guide tube and puncture needle are arranged in a one-to-one correspondence. When the suture needs to be pushed out of the puncture needle, the second tube body penetrates into the handle and abuts against the first tube body, and the wire pushing end abuts against the abutment head.

[0013] Wherein, one end of the guide tube away from the adapter is a tapered tube; and / or a tapered transition hole is provided in the adapter between the first adapter hole and the second adapter hole.

[0014] Wherein, the handle includes a top cover and a bottom cover; the suture control device also includes a reel seat and a spool located in the handle;

[0015] The reel seat is located at one end of the guide tube away from the adapter, the reel seat is provided with a plurality of reel holes facing the top cover, and a plurality of wire pushing grooves are provided on the reel seat, the wire pushing grooves and the reel holes are arranged in a one-to-one correspondence, one end of the wire pushing groove is tangent to and connected with the reel hole, and the other end of the wire pushing groove extends to the end face of the reel seat close to the adapter;

[0016] The thread drum is rotatably fixed in the thread wheel hole, and the thread drum is wound with multiple turns of suture. The end of the suture passes through the thread pushing groove and the guide tube and enters the puncture needle;

[0017] The top cover is made of a transparent material, and each of the thread spools is provided with a marking position on a side facing the top cover, and the thread spools and the sutures are arranged in a one-to-one correspondence.

[0018] In which, the reel seat includes a first seat body and a second seat body connected to each other, the first seat body is located on a side close to the adapter, the second seat body is located on a side away from the adapter, and the end surface of the second seat body facing the top cover protrudes further toward the top cover than the end surface of the first seat body facing the top cover; two reel holes are provided on the first seat body and the second seat body, and the wire pushing groove on the first seat body and the wire pushing groove on the second seat body are staggered; a plurality of wire pushing holes are provided on an end surface of the reel seat away from the adapter, the wire pushing holes and the wire pushing grooves are arranged in one-to-one correspondence and are connected, and the wire pushing holes are used for the first tube body and the second tube body to pass through.

[0019] In which, the outer wall of the handle is provided with a plurality of the adapter grooves, the adapter grooves and the second tube body are arranged in a one-to-one correspondence, and the outer wall of the handle is also provided with a limit member, and the limit member is used to limit the second tube body within the adapter groove; and / or, the push wire assembly also includes a push wire joint, the push wire joint and the free end of the push wire are fixedly connected, and the radial dimension of the push wire joint is larger than the radial dimension of the second tube body.

[0020] Among them, it also includes a plurality of return line components, and the return line components and the thread drums are arranged in a one-to-one correspondence; the return line component includes a rotating shaft, and the rotating shaft is fixedly connected to the thread drum, and the rotating shaft is used to recycle the suture by rotating.

[0021] Wherein, the return line assembly further includes a bearing, a retraction knob and a fastener;

[0022] The rotating shaft has a head end and a tail end, the head end passes through the top cover and is located on the outside of the handle, the head end is provided with a head, and at least one first tooth portion is provided on a surface of the head away from the tail end, the retraction knob is cylindrical, the bottom of the retraction knob is located on the side away from the head, and a plurality of second teeth portions are provided in the bottom of the retraction knob at equal intervals along the circumferential direction, and second tooth grooves are formed between adjacent second teeth portions. When the first teeth portion is placed in the second tooth grooves, the rotating shaft can be synchronously driven to rotate by the retraction knob;

[0023] A plurality of bearing holes are provided in the reel seat, the bearings are fixed in the bearing holes, a baffle is provided on the rotating shaft between the head end and the tail end, the wire drum is located between the bearing and the baffle, and both ends of the wire drum are respectively in contact with the baffle and the inner ring of the bearing, the tail end passes through the wire drum and the bearing and is fixedly connected to the fastener, and the fastener is in contact with the inner ring of the bearing.

[0024] Among them, the first tooth portion is provided with two symmetrically distributed and inclined first tooth surfaces on the side facing the second tooth portion, and the two first tooth surfaces are symmetrically distributed about the axis of the rotating shaft; the second tooth portion is provided with two symmetrically distributed and inclined second tooth surfaces on the side facing the first tooth portion, and the two second tooth surfaces are symmetrically distributed about the axis of the retraction knob.

[0025] Among them, the connection between the two first tooth surfaces forms a first tooth line, and the first tooth line continuously approaches the head from the side away from the axis of the rotating shaft to the side close to the axis of the rotating shaft; and / or, the connection between the two second tooth surfaces forms a second tooth line, and the second tooth line continuously approaches the bottom of the retraction knob from the side away from the axis of the retraction knob to the side close to the axis of the retraction knob.

[0026] The top cover is provided with a plurality of through holes corresponding to the rotating shafts one by one, a sleeve is fixed in each through hole, the mouth of the sleeve is connected to the through hole, and the bottom of the sleeve is provided with a first butt joint;

[0027] The rotating shaft passes through the first butt joint and is connected to the retraction knob;

[0028] The retraction knob is sleeved on the outside of the first butt joint and is snap-connected to the first butt joint;

[0029] The first butt joint tube is provided with a plurality of first arc-shaped petals at one end facing the retraction knob, and the plurality of first arc-shaped petals are distributed at intervals around the axis of the first butt joint tube; the retraction knob is provided with a plurality of second arc-shaped petals at one end facing the first butt joint tube, and the plurality of second arc-shaped petals are distributed at intervals around the axis of the retraction knob.

[0030] Among them, a snap ring is provided on the outer side wall of the first connecting tube, and a plurality of snap parts are provided on the inner side wall of the retraction knob. The plurality of snap parts are spaced apart along the axis of the retraction knob, and one of the plurality of snap parts is used for snap connection with the snap ring, and at least one of the plurality of snap parts is used to increase the stability of the socket connection between the retraction knob and the first connecting tube.

[0031] In which, a limiting ring is provided on the inner wall of the sleeve, and a protrusion is provided on the outer side wall of the second arc-shaped petal; the retraction knob and the head of the rotating shaft have an engaged state and a non-engaged state; when the first tooth portion is placed in the second tooth groove, the retraction knob is in an engaged state, the protrusion and the limiting ring are spaced apart, and the snap portion and the snap ring are snap-connected; when the first tooth portion is placed outside the second tooth groove, the retraction knob is in a non-engaged state, the protrusion and the limiting ring are in contact with each other, and the snap portion and the snap ring are adjacent or spaced apart.

[0032] In which, the loop assembly also includes a plurality of elastic wires, and the bottom of the sleeve is provided with a plurality of third teeth distributed at equal intervals along the circumferential direction, and a third tooth groove is formed between adjacent third teeth. One end of the elastic wire is fixed to one end of the second arc-shaped petal facing the bottom of the sleeve, and the other end of the elastic wire is used to be placed in the third tooth groove when the first tooth portion is placed in the second tooth groove, or, the other end of the elastic wire is used to be placed outside the third tooth groove when the first tooth portion is placed outside the second tooth groove.

[0033] The third tooth portion is provided with two symmetrically distributed and inclined third tooth surfaces on a side facing the retraction knob, and the two third tooth surfaces are symmetrically distributed about the axis of the sleeve.

[0034] Wherein, an additional cover is further included, which is detachably fixed to the handle. The additional cover is used to limit the rotation of the retraction knob and is also used to prevent the first tube from running out of the handle.

[0035] An embodiment of the present application also provides a suturing system, including a needle ejection device and the above-mentioned suture control device, wherein the needle ejection device is used to push out or retract the puncture needle, and the suture control device is used to push out or retract the suture.

[0036] According to the suture control device in the above embodiment, through the cooperation of the suture pushing wire and manpower, during the process of pushing the thread, the pushing progress or smoothness of the suture pushing wire can be sensed in time by manpower, so as to facilitate timely stopping and adjusting the suture pushing component to ensure the smooth progress of the suture pushing process, avoid continuing to push the thread forward when the thread pushing is not smooth, causing the suture to accumulate or knot in the puncture needle and cause surgical failure, thereby improving the accuracy and efficiency of the suture pushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the structure of the suture control device in an embodiment of the present application;

[0038] Figure 2 This is a schematic structural diagram of a wire pushing assembly in an embodiment of the present application;

[0039] Figure 3 This is a schematic diagram of a partially exploded structure of a suture control device in an embodiment of the present application;

[0040] Figure 4 This is a schematic diagram of the explosion structure of the suture control device in an embodiment of the present application;

[0041] Figure 5 Schematic diagram of the cross-sectional structure of the suture control device in an embodiment of the present application;

[0042] Figure 6This is a schematic diagram of the structure of the reel seat in the embodiment of the present application;

[0043] Figure 7 This is a schematic diagram of an application scenario of a reel seat in an embodiment of the present application;

[0044] Figure 8 Schematic diagram of a partial three-dimensional structure of a suture control device in an embodiment of the present application;

[0045] Figure 9 This is a schematic diagram of the rotating shaft structure in an embodiment of the present application;

[0046] Figure 10 This is a schematic diagram of the retraction knob structure in an embodiment of the present application;

[0047] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure of the middle retracement knob GG;

[0048] Figure 12 This is a schematic diagram of a partial top cover structure in an embodiment of the present application.

[0049] Explanation of reference numerals: 10. Suture, 11. Abutment, 20. Thread-pushing assembly, 21. Thread-pushing wire, 22. First tube, 23. Second tube, 24. Thread-pushing joint, 30. Puncture needle, 40. Handle, 41. Top cover, 411. Through hole, 42. Bottom cover, 43. Adapter groove, 44. Limiter, 50. Adapter, 51. First adapter hole, 52. Second adapter hole, 53. Conical transition hole, 60. Guide tube, 61. Conical tube, 70. Reel seat, 71. Reel hole, 72. Thread-pushing groove, 73. First seat, 74. Second seat, 75. Thread-pushing hole, 76. Bearing hole, 80. Spool, 81. Marking position, 90. Thread return assembly, 91. Rotating shaft, 911. Head, 912. First tooth portion, 913. First tooth surface, 914. First tooth line, 915. Slot, 916. Baffle, 92. Bearing, 93. Retraction knob, 931. Second tooth portion, 932. Second tooth groove, 933. Second tooth surface, 934. Second tooth line, 935. Second arc-shaped petal, 936. Snap portion, 937. Raised portion, 938. Limiting block, 94. Fastener, 100. Sleeve, 101. Limiting ring, 102. Third tooth portion, 103. Third tooth groove, 110. First docking tube, 111. First arc-shaped petal, 112. Snap ring, 120. Elastic wire, 130. Additional cover, 131. Limiting hole. DETAILED DESCRIPTION

[0050] The present application will be further described in detail below through specific embodiments in conjunction with the accompanying drawings, wherein similar elements in different embodiments are numbered with similar elements.

[0051] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0052] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0053] The advantages of the suture control device designed by the present invention are illustrated by taking its application in foramen ovale closure surgery as an example. It should be noted that the suture control device and suturing system in the present invention, in addition to being used in foramen ovale closure surgery, can also be used in other fields requiring suturing, such as arteriovenous suture surgery.

[0054] During foramen ovale closure surgery, the delivery or pushing of sutures has always been an industry problem. When pushing the sutures, they are very soft and easily bend. Once bent, the sutures cannot be pushed forward, and the surgery often fails due to this problem. In order to achieve suture pushing, existing suture control devices mostly use gear sets to achieve synchronous suture pushing. However, since the state of the sutures cannot be sensed when pushing the sutures mechanically, the problem of suture bending is prone to occur, and the suture pushing efficiency is very low. The suture control device designed by the present invention combines mechanical and human power to solve the problems of poor suture pushing accuracy and low efficiency in the existing technology. The specific technical solution of the suture control device is introduced as follows:

[0055] like Figures 1-12 As shown, an embodiment of the present invention provides a suture control device, comprising: a suture 10 and a pusher assembly 20. The end of the suture 10 is used to penetrate into the puncture needle 30, and the suture 10 located in the puncture needle 30 is provided with an abutment head 11. The pusher assembly 20 includes a pusher wire 21, one end of the pusher wire 21 abuts against the abutment head 11, and the other end of the pusher wire 21 is located outside the puncture needle 30, and the pusher wire 21 is used to push the suture 10. The abutment head 11 can be produced by tying a knot in the suture 10, or the abutment head 11 is a developing ring fixed on the suture 10. One end face where the pusher wire 21 abuts against the abutment head 11 is a plane, and the plane is perpendicular to the axis of the pusher wire 21, so that the end of the pusher wire 21 abuts against the abutment head 11.

[0056] By using the suture control device in the above embodiment of the present invention, through the cooperation of the suture pushing wire 21 and manpower, during the process of pushing the thread, the progress of the suture pushing wire 21 can be timely sensed by manpower, so as to facilitate timely stopping and adjusting the suture pushing component to ensure the smooth progress of the suture pushing process, avoid continuing to push the thread forward when the thread pushing is not smooth, and causing the suture 10 to accumulate or knot in the puncture needle 30 and cause surgical failure, thereby improving the accuracy and efficiency of the thread pushing.

[0057] It should be noted that if Figure 1 As shown, the radial dimension of the abutment head 11 on the suture 10 is close to the inner diameter of the puncture needle 30, so that the interior of the puncture needle 30 can accommodate one suture 10 and one push wire 21, but cannot accommodate one abutment head 11 and one push wire 21, that is, the abutment head 11 and the push wire 21 cannot be arranged side by side in the puncture needle 30, so that the push wire 21 and the abutment head 11 are easy to abut. The push wire 21 needs to have a certain hardness to facilitate pushing the suture 10, and the push wire 21 also needs to have a certain flexibility to facilitate bending and storage of the push wire 21. Based on this, the push wire 21 is, for example, nickel titanium wire.

[0058] like Figure 1-Figure 2 As shown, the push wire assembly 20 also includes a first tube body 22 and a second tube body 23. One end of the push wire 21 is a push wire end, and the other end of the push wire 21 is a free end. The first tube body 22 and the second tube body 23 are both sleeved on the push wire 21 between the push wire end and the free end. The first tube body 22 is located on the side close to the push wire end, and the second tube body 23 is located on the side away from the push wire end. The first tube body 22 and the push wire 21 are fixedly connected, and the second tube body 23 and the push wire 21 are movably connected.

[0059] The first tube body 22 and the second tube body 23 are, for example, both stainless steel tubes, wherein the first tube body 22 and the push wire 21 are fixedly connected, for example, by gluing the first tube body 22 and the push wire 21 to be fixedly sleeved, and the first tube body 22 can provide certain support to the push wire 21 to prevent the push wire 21 from shaking. If the first tube body 22 is not provided, directly applying force to the push wire 21 to push the suture 10 is difficult to operate with the hands, and it is inconvenient to hold or pinch the thinner push wire 21. The push wire 21 that is movably sleeved with the second tube body 23 can guide the movement of the second tube body 23, making it convenient for the second tube body 23 to apply force to the first tube body 22, thereby facilitating rapid thread pushing.

[0060] like Figure 1-Figure 3 and Figure 8 As shown, the suture control device also includes a handle 40, an adapter 50 and a guide tube 60. An adapter groove 43 is provided on the outside of the handle 40. The adapter 50 has a first adapter hole 51 and a second adapter hole 52 connected in the axial direction. The first adapter hole 51 is used to be fixedly connected to the puncture needle 30, and one end of the guide tube 60 is fixed in the second adapter hole 52.

[0061] A portion of the first tube body 22 close to the wire pushing end can be movably placed in the guide tube 60 , the second tube body 23 and the wire pushing wire 21 with a free end are located outside the handle 40 , and the adapter groove 43 is used to fix the second tube body 23 .

[0062] The suture 10, the wire pushing assembly 20, the adapter 50, the guide tube 60 and the puncture needle 30 are arranged in a one-to-one correspondence. When the suture 10 needs to be pushed out of the puncture needle 30, the second tube body 23 penetrates into the handle 40 and abuts against the first tube body 22, and the wire pushing end abuts against the abutment head 11.

[0063] Under the action of the adapter 50, the guide tube 60 and the puncture needle 30 can be aligned first, so that the push-wire 21 can move along the guide tube 60 in the later stage and can accurately abut the suture 10 in the puncture needle 30 against the abutment head 11. The first tube body 22 and the part of the first push-wire 21 containing the push-wire end are pre-placed in the guide tube 60 to prevent the occurrence of the phenomenon of misalignment during later installation, saving operation time, for example, the first tube body 22 and the guide tube 60 abut and cannot push the wire. Under the action of the push-wire 21, the second tube body 23 can quickly penetrate the handle 40 and abut against the first tube body 22. Through the second tube body 23, it is also convenient to apply force to push the first tube body 22 and the push-wire 21 forward to realize the push-wire function. The designed push-wire assembly 20 ensures the stability of the push-wire process and improves the push-wire speed. It takes only 10 seconds to push a suture.

[0064] like Figure 8 As shown, for example, when the push-wire assembly 20 is set to four, two adapter grooves 43 can be respectively opened on the side walls on both sides of the handle 40, and the side walls of the adapter groove 43 are parallel to the axis of the puncture needle 30 or the axis of the guide tube 60. The second tube body 23 with the push-wire wire 21 is removably placed in the adapter groove 43. When needed, the second tube body 23 can be quickly removed nearby to facilitate the push-wire operation. The axial length of the push-wire assembly 20 (for example, the length along the axial direction of the first tube body 22) can be reduced by the movable sleeve of the second tube body 23, so as to avoid the excessively long push-wire assembly 20 being exposed outside the handle 40, causing inconvenience to the guide wire, sheath and other components entering and exiting the suture control device, and making the instrument too long, which is not conducive to the miniaturization of the instrument.

[0065] like Figure 1 As shown, more preferably, the end of the guide tube 60 away from the adapter 50 is a tapered tube 61. And / or, a tapered transition hole 53 is opened in the adapter 50 between the first adapter hole 51 and the second adapter hole 52.

[0066] The design of the tapered tube 61 serves to guide the suture 10 and the first tube body 22 as they enter the guide tube 60. The tapered tube 61 can be an integral structure with the guide tube 60, or it can be two independent parts that are fixedly connected after later processing. Based on the size of the guide tube 60 and the puncture needle 30, the aperture of the first adapter hole 51 is correspondingly smaller than the aperture of the second adapter hole 52. A tapered transition hole 53 is provided between the first adapter hole 51 and the second adapter hole 52 to facilitate the push wire 21 to pass through the guide tube 60 and enter the puncture needle 30. Otherwise, the suture 10 and the push wire 21 may get stuck in the adapter 50 and cannot be pushed.

[0067] like Figure 1 As shown, after the first tube body 22 is pre-installed in the guide tube 60, a distance is reserved between the end of the guide tube 60 close to the adapter 50 and the end of the first tube body 22 close to the adapter 50, and this distance is defined as the push-line spacing. When the distance moved by the first tube body 22 in the guide tube 60 under the action of the second tube body 23 is equal to the push-line spacing, the first tube body 22 cannot be pushed, and the suture 10 is pushed out of the puncture needle 30. The push-line spacing can be preset according to the actual required push-line distance. The second tube body 23 on the outside of the handle 40 can also be designed with a mark corresponding to the push-line spacing, so that it can be known when to stop pushing the thread outside the handle 40.

[0068] like Figure 1-Figure 7 As shown, the handle 40 includes a top cover 41 and a bottom cover 42. The suture control device further includes a reel seat 70 and a spool 80 located in the handle 40.

[0069] The reel seat 70 is located at the end of the guide tube 60 away from the adapter 50. The reel seat 70 is provided with a plurality of reel holes 71 on the side facing the top cover 41. The reel seat 70 is provided with a plurality of wire pushing grooves 72. The wire pushing grooves 72 are arranged in a one-to-one correspondence with the reel holes 71. One end of the wire pushing groove 72 is tangent to and connected to the reel hole 71, and the other end of the wire pushing groove 72 extends to the end face of the reel seat 70 close to the adapter 50. The wire pushing grooves 72 connected to the reel holes 71 are combined to form a shape similar to the number 9.

[0070] A thread drum 80 is rotatably fixed in the thread wheel hole 71, and multiple turns of suture 10 are wound on the thread drum 80. The end of the suture 10 passes through the thread pushing groove 72 and the guide tube 60 and enters the puncture needle 30. For example, an annular groove is provided on the side wall of the thread drum 80 to facilitate winding multiple turns of suture 10.

[0071] The top cover 41 is made of a transparent material. Each thread drum 80 is provided with a marking position 81 on the side facing the top cover 41 . The thread drums 80 and the sutures 10 are provided in a one-to-one correspondence.

[0072] After the suture 10 is pushed out of the puncture needle 30, it is captured by the capture net, facilitating subsequent suture and knotting of the foramen ovale, completing the procedure. As the capture net captures the suture 10, it rotates the spool 80. If the rotation of the spool 80 is not visible through the transparent top cover 41, it indicates that the suture 10 corresponding to the spool 80 has failed to be captured and needs to be retrieved. The transparent top cover 41 and the spool 80 with the marking 81 facilitate prompt detection of any abnormalities in the suture 10, enabling timely remediation and ensuring a smooth surgical procedure.

[0073] like Figure 4 as well as Figure 6-Figure 7 As shown, some protrusions or grooves can be provided on the side walls around the reel seat 70, and correspondingly, grooves or protrusions corresponding to the reel seat 70 are provided in the bottom cover 42 and the top cover 41, so that the reel seat 70 and the top cover 41 and the bottom cover 42 can be assembled together with the concave and convex matching. The reel seat 70 can be fixed in the handle 40 with the help of screws and nuts. Similarly, the top cover 41 and the bottom cover 42 can also be connected by screws.

[0074] like Figure 3-Figure 7 As shown, specifically, the reel seat 70 includes a first seat body 73 and a second seat body 74 connected to each other. The first seat body 73 is located on the side close to the adapter 50, and the second seat body 74 is located on the side away from the adapter 50. The end surface of the second seat body 74 facing the top cover 41 protrudes further toward the top cover 41 than the end surface of the first seat body 73 facing the top cover 41. The first seat body 73 and the second seat body 74 are combined to form an L-shaped seat. Two reel holes 71 are provided on the first seat body 73 and the second seat body 74. The wire pushing groove 72 on the first seat body 73 and the wire pushing groove 72 on the second seat body 74 are staggered. A plurality of wire pushing holes 75 are provided on an end surface away from the adapter 50. The wire pushing holes 75 and the wire pushing groove 72 are arranged one-to-one and connected. The wire pushing holes 75 are used for the first tube body 22 and the second tube body 23 to pass through. Correspondingly, the suture 10 , the pusher assembly 20 , the puncture needle 30 , the adapter 50 , the guide tube 60 , and the wire drum 80 are configured in four.

[0075] The wire pushing groove 72 on the first seat 73 and the wire pushing groove 72 on the second seat 74 are staggered, so that the four wire pushing wires 21 and the corresponding first tube 22 and guide tube 60 are staggered. Combined with the height difference between the first seat 73 and the second seat 74 (the size between the top cover 41 and the bottom cover 42), the four wire pushing wires 21 and the corresponding first tube 22 and guide tube 60 are further staggered, effectively avoiding the phenomenon of multiple pipelines gathering and interfering, and facilitating hand operation. The wire pushing holes 75 are now configured as four, such as Figure 6-Figure 7As shown, the two thread-pushing holes 75 correspond to the thread-pushing groove 72 on the second base 74 and can be set higher. The two thread-pushing holes 75 correspond to the thread-pushing groove 72 on the first base 73 and can be set lower. When installing or assembling the suture control device, the thread-pushing holes 75 are used to allow the first tube 22 to pass through and be placed in the guide tube 60. When the suture control device is used later, the thread-pushing holes 75 are used to allow the second tube 23 to pass through and abut against the first tube 22.

[0076] The outer wall of the handle 40 is provided with a plurality of adapter grooves 43, and the adapter grooves 43 and the second tube body 23 are arranged in a one-to-one correspondence. Figure 8 As shown, two adapter grooves 43 are respectively provided on the side walls of the handle 40, and the second tube body 23 is temporarily accommodated through the adapter grooves 43. A limiter 44 is also provided on the outer wall of the handle 40. The limiter 44 is used to limit the second tube body 23 within the adapter groove 43. Specifically, the limiter 44 is, for example, a U-shaped nickel-titanium wire provided at the notch of the adapter groove 43. The two ends of the nickel-titanium wire are fixed on the side walls of the handle 40, and the notch of the adapter groove 43 is provided toward the side of the top cover 41. And / or, the push wire assembly 20 also includes a push wire connector 24, which is fixedly connected to the free end of the push wire 21. The radial dimension of the push wire connector 24 is larger than the radial dimension of the second tube body 23. The push wire connector 24 can prevent the second tube body 23 and the push wire 21 from separating.

[0077] like Figure 7 As shown, the suture control device preferably further includes multiple return assemblies 90, each corresponding to the spool 80. The return assemblies 90 include a rotating shaft 91 fixedly connected to the spool 80, and the rotating shaft 91 is used to recycle the suture 10. If a suture 10 is not successfully pushed through, or if the procedure fails, the rotating shaft 91 corresponding to the suture 10 can be rotated to drive the spool 80 connected to the rotating shaft 91 to rotate, thereby realizing the return function. After the suture 10 is rewound, the suture 10 can be pushed through again.

[0078] like Figure 4-Figure 5 As shown, specifically, the return line assembly 90 further includes a bearing 92 , a retraction knob 93 and a fastener 94 .

[0079] The rotating shaft 91 has a head end and a tail end. The head end passes through the top cover 41 and is located on the outside of the handle 40. The head end is provided with a head 911. At least one first tooth portion 912 is provided on the side of the head 911 facing away from the tail end. The retraction knob 93 is cylindrical, and the bottom of the retraction knob 93 is located on the side away from the head 911, that is, the retraction knob 93 is an inverted cylindrical shape. A plurality of second teeth 931 are provided in the bottom of the retraction knob 93 at equal intervals along the circumferential direction, and second tooth grooves 932 are formed between adjacent second teeth 931. When the first tooth portion 912 is placed in the second tooth groove 932, the rotating shaft 91 can be synchronously driven to rotate by the retraction knob 93.

[0080] A plurality of bearing holes 76 are defined within the reel seat 70, and bearings 92 are fixed within the bearing holes 76, for example, by bonding or welding. A baffle 916 is provided on the rotating shaft 91 between the head end and the tail end, and the bobbin 80 is positioned between the bearings 92 and the baffle 916. Furthermore, the ends of the bobbin 80 abut against the baffle 916 and the inner ring of the bearing 92, respectively. The tail end passes through the bobbin 80 and the bearing 92 and is fixedly connected to the fastener 94, which abuts against the inner ring of the bearing 92.

[0081] For example, a pair of first teeth 912 are disposed on the head 911. A pair of first teeth 912 facilitates the entry of the first teeth 912 into the second tooth grooves 932 and ensures a stable connection between the rotating shaft 91 and the retraction knob 93. Multiple pairs of first teeth 912 can easily cause the first teeth 912 and the second teeth 931 to become stuck or abut against each other, preventing them from entering the second tooth grooves 932. The bearing 92 is, for example, a cylindrical bearing, and the fastener 94 is, for example, a hexagonal nut. The tail end of the rotating shaft 91 is provided with external threads, and the tail end of the rotating shaft 91 is threadedly connected to the hexagonal nut. After the tail end of the rotating shaft 91 and the fastener 94 are fixedly connected, the spool 80 abuts against the baffle 916 and the inner ring of the bearing 92, respectively, and the fastener 94 abuts against the inner ring of the bearing 92. Rotating the rotating shaft 91 synchronously rotates the spool 80, the inner ring of the bearing 92, and the fastener 94, thereby enabling the recovery of the suture 10. Correspondingly, a groove or hole is formed on the reel seat 70 and communicates with the bearing hole 76 for receiving a fastener 94. The designed return assembly 90 has a small resistance when the spool 80 rotates. On the one hand, it is easy to apply force to rotate the rotating shaft 91. On the other hand, when the suture 10 on the spool 80 passes through the human body tissue, the suture 10 exerts a small pulling force on the human body tissue.

[0082] like Figure 9 and Figure 11 As shown, preferably, the first tooth portion 912 is provided with two symmetrically distributed and inclined first tooth surfaces 913 on the side facing the second tooth portion 931, and the two first tooth surfaces 913 are symmetrically distributed about the axis of the rotating shaft 91. The second tooth portion 931 is provided with two symmetrically distributed and inclined second tooth surfaces 933 on the side facing the first tooth portion 912, and the two second tooth surfaces 933 are symmetrically distributed about the axis of the retraction knob 93.

[0083] The shape of the first tooth portion 912 is the same as that of the second tooth portion 931. The first tooth portion 912 and the second tooth portion 931 both have pointed blocks on one side close to each other, so that when the first tooth portion 912 approaches the second tooth portion 931, the inclined tooth surface plays a guiding role, which facilitates the first tooth portion 912 to quickly enter the second tooth groove 932. This process can avoid rotating the retraction knob 93 to align the second tooth groove 932 and the first tooth portion 912, and can quickly realize the connection between the retraction knob 93 and the rotating shaft 91, and then facilitate the synchronous rotation of the rotating shaft 91 by the retraction knob 93.

[0084] like Figure 9 and Figure 11 As shown, preferably, the connection between the two first tooth surfaces 913 forms a first tooth line 914, which continuously approaches the head 911 from the side away from the axis of the rotating shaft 91 to the side close to the axis of the rotating shaft 91. And / or, the connection between the two second tooth surfaces 933 forms a second tooth line 934, which continuously approaches the bottom of the retraction knob 93 from the side away from the axis of the retraction knob 93 to the side close to the axis of the retraction knob 93.

[0085] The first tooth line 914 and the second tooth line 934 have the same configuration principles and functions. Here, the first tooth line 914 is used as an example to explain their principles and functions. When the first tooth line 914 is tilted relative to the end surface on the head 911, that is, not parallel, the first tooth line 914 and the second tooth line 934 are butted together, forming a point-to-point contact method. This reduces the contact area between the first tooth portion 912 and the second tooth portion 931. Combined with the tilted configuration of the first tooth surface 913 and the second tooth surface 933, this facilitates quick placement of the first tooth portion 912 within the second tooth groove 932. This allows the first tooth portion 912 to be placed within the second tooth groove 932 when the retraction knob 93 approaches the rotating shaft 91 at any position, eliminating the need to rotate the retraction knob 93 to align it with the rotating shaft 91.

[0086] like Figure 9 As shown, a straight groove 915 is provided on the end surface of the head 911 between the two first teeth 912 , and the straight groove 915 cooperates with a screwdriver to facilitate the rapid winding of the suture 10 on the bobbin 80 .

[0087] like Figure 4 as well as Figure 10-12 As shown, the top cover 41 defines a plurality of through holes 411 corresponding one to each of the rotating shafts 91. A sleeve 100 is fixed within each through hole 411, with the sleeve 100's opening connected to the through hole 411. A first butt joint 110 is provided at the bottom of the sleeve 100. The first butt joint 110 extends toward and out of the through hole 411. When there are four rotating shafts 91, the top cover 41 defines four through holes 411 in matching positions.

[0088] The rotating shaft 91 passes through the first butt joint 110 and is connected to the retraction knob 93. The retraction knob 93 is sleeved on the outside of the first butt joint 110 and is snap-connected with the first butt joint 110.

[0089] The first docking tube 110 is provided with a plurality of first arc-shaped petals 111 at one end facing the retraction knob 93, and the plurality of first arc-shaped petals 111 are evenly spaced around the axis of the first docking tube 110. The retraction knob 93 is provided with a plurality of second arc-shaped petals 935 at one end facing the first docking tube 110, and the plurality of second arc-shaped petals 935 are evenly spaced around the axis of the retraction knob 93.

[0090] The plurality of first curved petals 111 and the plurality of second curved petals 935 are each configured to be four, for example. The number of first curved petals 111 and the number of second curved petals 935 can be the same or different. This is merely an example and should not be construed as limiting the present application. In the plurality of first curved petals 111, gaps are formed between adjacent first curved petals 111. In the plurality of second curved petals 935, gaps are also formed between adjacent second curved petals 935. This facilitates the deformation of the gaps when the first curved petals 111 and the second curved petals 935 are sleeved together, thereby facilitating the snap-fit ​​connection between the retraction knob 93 and the first docking tube 110.

[0091] like Figure 10 and Figure 12 As shown, specifically, a snap ring 112 is provided on the outer side wall of the first docking tube 110, and a plurality of snap portions 936 are provided on the inner side wall of the retraction knob 93. The plurality of snap portions 936 are spaced apart along the axis of the retraction knob 93. One of the plurality of snap portions 936 is configured to snap-connect with the snap ring 112, and at least one of the plurality of snap portions 936 is configured to increase the stability of the socket connection between the retraction knob 93 and the first docking tube 110. For example, three snap portions 936 are provided on the inner side wall of the retraction knob 93. The middle snap portion 936 is snap-connected with the snap ring 112, and the snap portions 936 at both ends are configured to increase the stability of the socket connection between the retraction knob 93 and the first docking tube 110. The snap connection between the retraction knob 93 and the first docking tube 110 can be achieved through the snap ring 112 and the snap portion 936, thereby facilitating switching the matching state between the second tooth groove 932 in the retraction knob 93 and the first tooth portion 912 in the rotating shaft 91, that is, switching whether the retraction knob 93 rotates synchronously with the rotating shaft 91.

[0092] If any of the multiple snap-fitting portions 936 is located on the second arc-shaped petal 935, it will be divided into multiple snap-fitting units along with the multiple second arc-shaped petals 935. For example, if a snap-fitting portion 936 is located on the inner wall of the second arc-shaped petal 935, the snap-fitting portion 936 will be divided into four snap-fitting units, one corresponding to the inner wall of the second arc-shaped petal 935. The snap-fitting portion 936 is similar to a convex ring or a bump structure.

[0093] like Figure 5 and Figure 12 As shown, the inner wall of the sleeve 100 is provided with a limit ring 101, and the outer wall of the second arc-shaped petal 935 is provided with a protrusion 937. The retraction knob 93 and the head 911 of the rotating shaft 91 have an engaged state and a non-engaged state. When the first tooth portion 912 is placed in the second tooth groove 932, the retraction knob 93 is in an engaged state, the protrusion 937 and the limit ring 101 are spaced apart, and the buckle portion 936 is buckled with the buckle ring 112, for example, Figure 5 The structure shown at the left side of the retraction knob 93. When the first tooth portion 912 is placed outside the second tooth groove 932, the retraction knob 93 is in a non-engaged state, the protrusion 937 and the limit ring 101 are in contact, and the buckle portion 936 and the buckle ring 112 are adjacent or spaced apart, for example, Figure 5 The structure shown at the right side of the middle retraction knob 93. The limit ring 101 and the protrusion 937 cooperate to effectively limit the axial movement range of the retraction knob 93, preventing the retraction knob 93 from escaping from the first docking tube 110.

[0094] More preferably, the loop assembly 90 also includes a plurality of elastic wires 120, and the bottom of the sleeve 100 is provided with a plurality of third teeth 102 evenly spaced along the circumferential direction, and a third tooth groove 103 is formed between adjacent third teeth 102. One end of the elastic wire 120 is fixed to one end of the second arc-shaped petal 935 facing the bottom of the sleeve 100, and the other end of the elastic wire 120 is used to be placed in the third tooth groove 103 when the first tooth portion 912 is placed in the second tooth groove 932, or, the other end of the elastic wire 120 is used to be placed outside the third tooth groove 103 when the first tooth portion 912 is placed outside the second tooth groove 932.

[0095] Taking the four second arc-shaped petals 935 as an example, the elastic wire 120 can be fixed to each of the four second arc-shaped petals 935, or only to some of the second arc-shaped petals 935. The number of elastic wires 120 fixed to the second arc-shaped petals 935 can be one, two, three, etc. The present invention does not limit the distribution position and number of the elastic wires 120, and the number of elastic wires 120 can be increased or decreased according to actual needs. When the elastic wire 120 is fixed to the second arc-shaped petals 935, for example, a corresponding hole can be opened on one end surface of the second arc-shaped petal 935 facing the bottom of the sleeve 100, and one end of the elastic wire 120 is fixed in the hole of the second arc-shaped petal 935.

[0096] The end of the elastic wire 120 away from the retraction knob 93 is defined as the positioning end. When the retraction knob 93 is engaged with the rotating shaft 91 and rotates, the positioning end of the elastic wire 120 can deform to pass over the third tooth portion 102 at the corresponding position, enter the adjacent third tooth groove 103 and restore the position. Figure 5In the vertical position shown in FIG, the retraction knob 93 is continued to be rotated, and the elastic wire 120 continues to repeat the deformation and recovery. This design utilizes the recovery ability of the elastic wire 120 after deformation, ensuring that the retraction knob 93 can be accurately stopped at the position after the rotation of the retraction knob 93 is stopped, and the retraction knob 93 will not rotate due to instrument deflection or accidental contact. In other words, the designed retraction wire assembly 90 has an instant locking function.

[0097] Among them, the third tooth portion 102 is provided with two symmetrically distributed and inclined third tooth surfaces on the side facing the retraction knob 93, and the two third tooth surfaces are symmetrically distributed about the axis of the sleeve 100. The two inclined third tooth surfaces make the third tooth portion 102 form a pointed block shape on the end facing the retraction knob 93, and the structure of the third tooth portion 102 is the same as or similar to that of the first tooth portion 912. When the elastic wire 120 passes over different third tooth grooves 103, the third tooth surface can form a guiding effect, which facilitates the switching of the positioning end of the elastic wire 120 in different third tooth grooves 103. The elastic wire 120 is, for example, a nickel-titanium wire. Through the designed elastic wire 120, on the one hand, the retraction knob 93 can have an instant locking function to prevent accidental touching of the rotating spool 80. On the other hand, it can also prevent the spool 80 from rotating due to the tension of the suture 10 when assembling the retraction assembly 90.

[0098] like Figure 4 and Figure 8 As shown, the suture control device further includes an additional cover 130 , which is detachably fixed to the handle 40 . The additional cover 130 is used to limit the rotation of the retraction knob 93 and to prevent the first tube 22 from running out of the handle 40 .

[0099] Specifically, the additional cover 130 has a top plate and side walls enclosed on three sides. The reel seat 70 is fixed to the tail end of the handle 40, and the tail end of the handle 40 is the end close to the operator when the suture control device is used. A limit block 938 is provided at the end of the retracement knob 93 away from the top cover 41, and a corresponding limit hole 131 is provided on the top plate of the additional cover 130. For example, the limit block 938 is a hexagonal block, and the limit hole 131 is a hexagonal hole. The limit block 938 and the limit hole 131 are aligned and sleeved to prevent the retracement knob 93 from rotating. Correspondingly, a corresponding hole is provided at the tail end of the handle 40 to facilitate the second tube body 23 to enter the handle 40 and abut against the first tube body 22. At this time, the additional cover 130 is buckled on the tail end of the handle 40, and the side wall of the additional cover 130 can also be used to block the tail end of the handle 40 to prevent the first tube body 22 from running out. The additional cover 130 and the handle 40 are detachably connected, such as by a snap connection, and the additional cover 130 can be removed when needed, such as when operating the second tube 23 .

[0100] In an embodiment of the present invention, a suturing device system is provided, comprising a needle ejection device and the aforementioned suture control device, wherein the needle ejection device is used to push out or retract the puncture needle 30, and the suture control device is used to push out or retract the suture 10. The suturing device system includes the suture control device of the aforementioned embodiment and therefore also has the advantages of the aforementioned suture control device, which will not be described in detail here.

[0101] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, based on the concept of the present application, they can also make some simple deductions, modifications or substitutions.

Claims

1. A suture control device, characterized in that: include: A suture, the end of which is used to be inserted into the puncture needle, and the suture located in the puncture needle is provided with an abutment head; as well as A thread pushing assembly includes a thread pushing wire, one end of which abuts against the abutment head, and the other end of which is located outside the puncture needle, and is used to push the suture; The push wire assembly further includes a first tube body and a second tube body, one end of the push wire is a push wire end, and the other end of the push wire is a free end, the first tube body and the second tube body are both sleeved on the push wire between the push wire end and the free end, the first tube body is located on a side close to the push wire end, and the second tube body is located on a side away from the push wire end, the first tube body and the push wire are fixedly connected, and the second tube body and the push wire are movably connected; It also includes a handle, a transfer groove is opened on the outside of the handle, the second tube body and the push wire containing the free end are located outside the handle, the transfer groove is used to fix the second tube body, when the suture needs to be pushed out of the puncture needle, the second tube body is removed and allowed to pass into the handle and abut against the first tube body.

2. The suture control device according to claim 1, characterized in that The device further comprises an adapter and a guide tube, wherein the adapter is provided with a first adapter hole and a second adapter hole in communication along the axial direction, the first adapter hole is used for fixedly connecting with the puncture needle, and one end of the guide tube is fixed in the second adapter hole; A portion of the first tube body close to the wire pushing end can be movably placed in the guide tube; The suture, the wire pushing assembly, the adapter, the guide tube and the puncture needle are arranged in a one-to-one correspondence, and the wire pushing end and the abutment head are in abutment with each other.

3. The suture control device according to claim 2, characterized in that: One end of the guide tube away from the adapter is a tapered tube; and / or a tapered transition hole is provided in the adapter between the first adapter hole and the second adapter hole.

4. The suture control device according to claim 2, wherein: The handle includes a top cover and a bottom cover; the suture control device also includes a reel seat and a spool located in the handle; The reel seat is located at one end of the guide tube away from the adapter, the reel seat is provided with a plurality of reel holes facing the top cover, and a plurality of wire pushing grooves are provided on the reel seat, the wire pushing grooves and the reel holes are arranged in a one-to-one correspondence, one end of the wire pushing groove is tangent to and connected with the reel hole, and the other end of the wire pushing groove extends to the end face of the reel seat close to the adapter; The thread drum is rotatably fixed in the thread wheel hole, and the thread drum is wound with multiple turns of suture. The end of the suture passes through the thread pushing groove and the guide tube and enters the puncture needle; The top cover is made of a transparent material, and each of the thread spools is provided with a marking position on a side facing the top cover, and the thread spools and the sutures are arranged in a one-to-one correspondence.

5. The suture control device according to claim 4, characterized in that: The reel seat includes a first seat body and a second seat body connected to each other, the first seat body is located on a side close to the adapter, the second seat body is located on a side away from the adapter, and the end surface of the second seat body facing the top cover protrudes further toward the top cover than the end surface of the first seat body facing the top cover; two reel holes are provided on the first seat body and the second seat body, and the wire pushing groove on the first seat body and the wire pushing groove on the second seat body are staggered; a plurality of wire pushing holes are provided on an end surface of the reel seat away from the adapter, the wire pushing holes and the wire pushing grooves are arranged in one-to-one correspondence and are connected, and the wire pushing holes are used for the first tube body and the second tube body to pass through.

6. The suture control device according to claim 2, characterized in that: The outer wall of the handle is provided with a plurality of adapter grooves, and the adapter grooves and the second tube body are arranged in a one-to-one correspondence. The outer wall of the handle is also provided with a limit member, and the limit member is used to limit the second tube body within the adapter groove; and / or, the push wire assembly also includes a push wire joint, and the push wire joint is fixedly connected to the free end of the push wire, and the radial dimension of the push wire joint is larger than the radial dimension of the second tube body.

7. The suture control device according to claim 4 or 5, characterized in that: It also includes a plurality of return line components, which are arranged in a one-to-one correspondence with the thread drum; the return line component includes a rotating shaft, which is fixedly connected to the thread drum, and the rotating shaft is used to recycle the suture by rotating.

8. The suture control device according to claim 7, characterized in that: The return line assembly also includes a bearing, a retraction knob and a fastener; The rotating shaft has a head end and a tail end, the head end passes through the top cover and is located on the outside of the handle, the head end is provided with a head, and at least one first tooth portion is provided on a surface of the head away from the tail end, the retraction knob is cylindrical, the bottom of the retraction knob is located on the side away from the head, and a plurality of second teeth portions are provided in the bottom of the retraction knob at equal intervals along the circumferential direction, and second tooth grooves are formed between adjacent second teeth portions, and when the first teeth portion is placed in the second tooth groove, the rotating shaft can be synchronously driven to rotate through the retraction knob; A plurality of bearing holes are provided in the reel seat, the bearings are fixed in the bearing holes, a baffle is provided on the rotating shaft between the head end and the tail end, the wire drum is located between the bearing and the baffle, and both ends of the wire drum are respectively in contact with the baffle and the inner ring of the bearing, the tail end passes through the wire drum and the bearing and is fixedly connected to the fastener, and the fastener is in contact with the inner ring of the bearing.

9. The suture control device according to claim 8, characterized in that: The first tooth portion is provided with two symmetrically distributed and inclined first tooth surfaces on the side facing the second tooth portion, and the two first tooth surfaces are symmetrically distributed about the axis of the rotating shaft; the second tooth portion is provided with two symmetrically distributed and inclined second tooth surfaces on the side facing the first tooth portion, and the two second tooth surfaces are symmetrically distributed about the axis of the retraction knob.

10. The suture control device according to claim 9, characterized in that: The connection between the two first tooth surfaces forms a first tooth line, and the first tooth line continuously approaches the head from the side away from the axis of the rotating shaft to the side close to the axis of the rotating shaft; and / or, the connection between the two second tooth surfaces forms a second tooth line, and the second tooth line continuously approaches the bottom of the retraction knob from the side away from the axis of the retraction knob to the side close to the axis of the retraction knob.

11. The suture control device according to claim 8, characterized in that: The top cover is provided with a plurality of through holes corresponding to the rotating shafts one by one, a sleeve is fixed in each of the through holes, the mouth of the sleeve is connected to the through hole, and the bottom of the sleeve is provided with a first butt joint; The rotating shaft passes through the first butt joint and is connected to the retraction knob; The retraction knob is sleeved on the outside of the first butt joint and is snap-connected to the first butt joint; The first butt joint tube is provided with a plurality of first arc-shaped petals at one end facing the retraction knob, and the plurality of first arc-shaped petals are distributed at intervals around the axis of the first butt joint tube; the retraction knob is provided with a plurality of second arc-shaped petals at one end facing the first butt joint tube, and the plurality of second arc-shaped petals are distributed at intervals around the axis of the retraction knob.

12. The suture control device according to claim 11, characterized in that: A snap ring is provided on the outer side wall of the first butt joint tube, and a plurality of snap parts are provided on the inner side wall of the retraction knob. The plurality of snap parts are spaced apart along the axis of the retraction knob, and one of the plurality of snap parts is used for snap connection with the snap ring, and at least one of the plurality of snap parts is used to increase the stability of the socket connection between the retraction knob and the first butt joint tube.

13. The suture control device according to claim 12, wherein: A limiting ring is provided on the inner wall of the sleeve, and a protrusion is provided on the outer wall of the second arc-shaped petal; the retraction knob and the head of the rotating shaft have an engaged state and a non-engaged state; when the first tooth portion is placed in the second tooth groove, the retraction knob is in an engaged state, the protrusion and the limiting ring are spaced apart, and the snap portion and the snap ring are snap-connected; when the first tooth portion is placed outside the second tooth groove, the retraction knob is in a non-engaged state, the protrusion and the limiting ring are in contact with each other, and the snap portion and the snap ring are adjacent or spaced apart.

14. The suture control device according to claim 11, wherein: The loop assembly also includes a plurality of elastic wires. The bottom of the sleeve is provided with a plurality of third teeth distributed at equal intervals along the circumferential direction, and a third tooth groove is formed between adjacent third teeth. One end of the elastic wire is fixed to one end of the second arc-shaped petal facing the bottom of the sleeve, and the other end of the elastic wire is used to be placed in the third tooth groove when the first tooth portion is placed in the second tooth groove, or, the other end of the elastic wire is used to be placed outside the third tooth groove when the first tooth portion is placed outside the second tooth groove.

15. The suture control device according to claim 14, wherein: The third tooth portion is provided with two symmetrically distributed and inclined third tooth surfaces on a side facing the retraction knob, and the two third tooth surfaces are symmetrically distributed about the axis of the sleeve.

16. The suture control device according to claim 8, characterized in that: It also includes an additional cover, which is detachably fixed to the handle. The additional cover is used to limit the rotation of the retraction knob and prevent the first tube from running out of the handle.

17. A stapler system, characterized in that: It comprises a needle ejection device and a suture control device as described in any one of claims 1 to 16, wherein the needle ejection device is used to push out or retract the puncture needle, and the suture control device is used to push out or retract the suture.

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