A controllable telescopic locking puncture suture device for arthroscopic ligament repair

Abstract

The present application belongs to the field of medical devices and discloses a controllable, retractable, locking puncture suture device for arthroscopic ligament repair, comprising a sleeve and an inner rod. The sleeve comprises an operating end and a puncture end, the inner wall of the operating end being provided with a guide ridge and a stop ring, and the puncture end being provided with a hooking structure. The inner rod is inserted into the sleeve, with one end located outside the sleeve as a control end and the other end located inside the puncture end, and an elastic component is sleeved in the middle. The elastic component comprises a spring seat and a spring, the spring being located between the spring seat and the stop ring, with one end abutting the spring seat and the other end fixed to the stop ring. The spring seat is axially fixed relative to the inner rod, and a sliding groove is provided on its circumference to cooperate with the guide ridge. When the inner rod moves into the sleeve to compress the spring to a predetermined stroke, the sliding groove disengages from the guide ridge, and the inner rod cooperates with the hooking structure to form a fixed line hole. The spring seat can rotate about its axis to axially abut against the guide ridge to limit its position. The present application can improve the flexibility and safety of suturing operations during ligament repair surgery.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and more specifically, relates to a controllable telescopic locking puncture suture device for arthroscopic ligament repair. Background Art

[0002] Ankle ligament injuries, particularly those of the lateral collateral ligaments (ATFL and CFL), are common sports injuries. Treatment options include conservative treatment and surgical repair. For patients with mild ligament injuries, conservative treatments such as functional rehabilitation and bracing are often used. However, for patients with severe tears or chronic instability, surgical repair is a preferred option.

[0003] Currently, the suturing methods used clinically for ligament repair in joints such as the ankle joint mainly include open surgical suturing and arthroscopic suturing, but these methods still have many limitations. Open surgery requires a larger incision, which is more traumatic and requires a longer postoperative recovery time. It also increases the risk of infection, scarring, and postoperative joint stiffness. Although arthroscopic suturing is less invasive, most existing suturing instruments are general-purpose tools that lack optimized designs for minimally invasive environments, resulting in complex surgical operations and difficulty in performing accurate suturing in the narrow joint cavity. Existing suturing tools have low precision during the puncture and suturing process, making it difficult to ensure the accurate positioning of the suture points, resulting in uneven suture tension and increasing the risk of postoperative ligament healing failure. In addition, when traditional suturing instruments are used under arthroscopy, they often need to be repeatedly adjusted in angle, which increases the intraoperative operation time, and the puncture needle may cause additional damage to the surrounding soft tissue, affecting the postoperative repair effect. Due to the lack of an effective fixation mechanism, the risk of suture loosening is higher, which may lead to postoperative ligament loosening, suture cutting tissue, and even the need for secondary surgical repair.

[0004] In summary, the current ankle ligament repair suture technology still has problems such as large trauma, low puncture accuracy, poor suture stability, and complex operation. There is an urgent need for a more accurate, safe, and efficient suture tool to improve the success rate of surgery and optimize postoperative recovery. Summary of the Invention

[0005] In view of the defects of the existing technology, the purpose of this application is to provide a controllable telescopic locking puncture suture device for arthroscopic ligament repair, aiming to solve the problems of cumbersome operation and easy loosening of sutures of traditional suturing tools.

[0006] To achieve the above-mentioned objectives, in the first aspect, the present application provides a controllable telescopic locking puncture suture device for arthroscopic ligament repair, comprising a sleeve and an inner rod, the sleeve comprising an operating end and a puncture end, the inner wall of the operating end being provided with a guide ridge and a stop ring, the puncture end being provided with a hook structure; the inner rod is inserted into the sleeve, one end of which is located outside the sleeve as a control end, the other end is located inside the puncture end, and an elastic component is sleeved on the middle part; the elastic component comprises a spring seat and a spring, the spring being located between the spring seat and the stop ring, with one end abutting the spring seat and the other end fixed on the stop ring; the spring seat is axially fixed relative to the inner rod, and a sliding groove is provided on its periphery that cooperates with the guide ridge; when the inner rod moves into the sleeve so that the spring is compressed to a predetermined stroke, the sliding groove disengages from the guide ridge, and the inner rod cooperates with the hook structure to form a wire fixing hole, and the spring seat can rotate around its axis to axially abut against the guide ridge and limit the position.

[0007] Furthermore, the spring seat is an annular structure fixed on the inner rod, the annular structure can rotate axially along with the inner rod, and the radial dimension of the annular structure is greater than the outer diameter of the spring.

[0008] Furthermore, the spring seat is a tubular structure sleeved on the inner rod, and a rotating protrusion and a convex ring are respectively provided on the outer walls of both ends of the tubular structure, the rotating protrusion is located outside the sleeve, and the convex ring is located inside the sleeve; the sliding groove is opened on the outer side wall of the convex ring; the inner rod is provided with a sleeve ring bent radially inward, and the end of the tubular structure where the rotating protrusion is located is bent radially outward and is sleeved and fixed with the sleeve ring.

[0009] Furthermore, the cylinder where the puncture end is located is curved, and the hook structure is located on one side of the curvature center of the curved cylinder.

[0010] Furthermore, the wire hooking structure is a barb extending axially toward the operating end, and the outer side of the barb is flush with the outer wall of the sleeve where it is located.

[0011] Furthermore, the axial distance between the guide edge and the stop ring is smaller than the axial length of the elastic component in a natural state.

[0012] Furthermore, the ratio of the outer diameter of the inner rod to the inner diameter of the sleeve is 3:4.

[0013] Furthermore, a control ring is provided on the control end, and the center line of the control ring is perpendicular to the center axis of the inner rod.

[0014] Furthermore, an auxiliary control ring is symmetrically provided outside the operating end, and the center line of the auxiliary control ring is parallel to the center line of the control ring.

[0015] Furthermore, the radial cross-section of the chute is semicircular.

[0016] In general, the above technical solutions conceived by this application have the following beneficial effects compared with the existing technologies:

[0017] (1) The present application uses the control end of the inner rod and the operating end of the sleeve to precisely control the reciprocating motion of the inner rod in the sleeve, and uses the puncture end of the sleeve to hook the anchor suture, so that the inner rod moves inward to compress the elastic component to a preset stroke. The end of the inner rod located in the sleeve cooperates with the hook structure to realize a controllable telescopic locking design, thereby forming a closed thread-fixing hole along the radial direction. At this time, the inner rod is rotated to make the elastic component and the guide edge abut and limit in the axial direction to maintain the closed state of the closed thread-fixing hole; through the structural optimization design of the suturer and simple operation, the suturer can firmly hold the anchor suture, thereby reducing the risk of suture loosening and suture cutting tissue, and further improving the operational flexibility and safety in arthroscopic ligament repair surgery.

[0018] (2) The suturing device provided in this application has a controllable telescopic function, which can accurately adjust the position of the inner rod according to the needs of the operation, thereby improving the accuracy and safety of suturing; the hook structure design of the puncture end can effectively fix the suture line, prevent the wire from sliding during the suturing process, and enhance the stability of the suturing; the setting of the guide edge and the stop ring can prevent the inner rod from moving excessively, ensuring the stability and safety of the suturing device during use; the elastic component not only provides the necessary elastic support, but also absorbs part of the impact force during the suturing process, reducing damage to the tissue; the slide groove design plays a guiding role, so that the inner rod can move smoothly when the elastic component is compressed, avoiding the jamming phenomenon and improving the smoothness of the operation.

[0019] (3) The present application also designs the barrel where the puncture end of the stapler is located into a curved shape, which helps to better adapt to the anatomical structure of the joint and reduce damage to surrounding tissues; the annular limit flange ensures that the spring will not be dislocated during use, thereby improving the reliability of the stapler; the slide groove is designed with a semicircular cross-section to reduce friction, improve the movement efficiency of the inner rod, and enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a controllable telescopic locking puncture suture device for arthroscopic ligament repair provided in Example 1 of the present application;

[0021] Figure 2 This is a side structural diagram of the controllable telescopic locking puncture suture device for arthroscopic ligament repair provided in Example 1 of the present application;

[0022] Figure 3 This is a schematic diagram of the partial structure of the puncture end of the stapler provided in Example 1 of the present application;

[0023] Figure 41 is a schematic diagram of a radial cross-sectional structure of the stapler provided in Example 1 of the present application;

[0024] Figure 5 This is a partial structural diagram of the location of the elastic component of the stapler provided in Example 1 of the present application before locking;

[0025] Figure 6 This is a partial structural diagram of the location of the elastic component of the stapler provided in Example 1 of the present application after locking;

[0026] Figure 7 1 is a schematic diagram of a radial partial cross-sectional structure of the elastic component of the stapler provided in Example 1 of the present application at the front and rear positions of the locking device;

[0027] Figure 8 This is a schematic structural diagram of a controllable telescopic locking puncture suture device for arthroscopic ligament repair provided in Example 2 of the present application;

[0028] Figure 9 This is a schematic cross-sectional view of the local structure of the stapler before locking provided in Example 2 of the present application;

[0029] Figure 10 This is a schematic cross-sectional view of the local structure of the stapler after locking provided in Example 2 of the present application;

[0030] Figure 11 It is a partial cross-sectional schematic diagram of the connection and cooperation structure between the tubular structure spring seat and the inner rod provided in Example 2 of the present application.

[0031] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0032] 1-sleeve, 11-puncture end, 12-guide edge, 13-hook structure, 14 stop ring, 2-inner rod, 21-spring seat, 211-rotating protrusion, 212-convex ring, 213-slide groove, 22-fixing hole, 23-sleeve ring, 3-spring, 4-control finger ring, 5-auxiliary control finger ring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0034] The term "and / or" as used herein describes an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. The symbol " / " as used herein indicates that the related objects are in an "or" relationship, for example, A / B means either A or B.

[0035] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0036] In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more, for example, multiple processing units means two or more processing units, etc.; multiple elements means two or more elements, etc.

[0037] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0038] Example 1

[0039] This embodiment provides a controllable telescopic locking puncture suture device for arthroscopic ligament repair (hereinafter referred to as the suture device). Figure 1 and 2 As shown, the suture device comprises a sleeve 1 and an inner rod 2. Both sleeve 1 and inner rod 2 are made of medical stainless steel or titanium alloy, with smooth, corrosion-resistant surfaces that are less susceptible to bacterial adhesion. The sleeve 1 is a hollow structure that serves as the main structure of the suture device. The inner rod 2 is a solid rod that primarily functions by axially reciprocating, cooperating with the sleeve 1 to form a suture hole 22 to position the suture thread during the suturing process. It also functions to rotate axially, causing the slide groove 213 and the guide rib 12 to abut against each other, thereby limiting the reciprocating motion of the inner rod 2 and maintaining the suture hole 22 closed.

[0040] The sleeve 1 includes an operating end and a puncture end 11. Auxiliary control rings 5 are symmetrically positioned outside the operating end. The aforementioned inner rod 2 is inserted into the sleeve 1, with one end located outside the sleeve 1 as the control end and the other end located inside the sleeve 1. A control ring 4 is positioned on the control end, with the centerline of the control ring 4 perpendicular to the central axis of the inner rod 2. The centerline of each auxiliary control ring 5 is parallel to the centerline of the control ring 4.

[0041] like Figure 3 As shown, an opening is provided on the side of the puncture end 11, and a hooking structure 13 is provided at the opening, which extends radially toward the operating end along the opening. The hooking structure 13 is used to hook the thread during suturing; specifically, the hooking structure 13 is a barb structure. In order not to cause tissue damage, the outer wall of the barb must be flush with the outer wall of the sleeve 1.

[0042] In this embodiment, the barrel housing the puncture tip 11 is designed to be curved, with the opening on the side of the puncture tip 11 facing the center of curvature of the curved barrel. Conventional staplers are typically linear, or the puncture tip forms a specific angle with the main rod, which sometimes makes it difficult to adapt to the curved ligament tissue within the joint cavity, resulting in a limited puncture angle. In this embodiment, the portion of the barrel housing the puncture tip 11 is designed to be a semi-arc-shaped curve, allowing the surgeon to freely adjust the puncture direction according to the anatomical morphology of the target tissue, thereby improving puncture accuracy and reducing unnecessary tissue damage.

[0043] Specifically, the curvature radius R of this section of the arc-shaped cylinder is about 5~15mm. If the curvature radius is too small (such as R<5mm), it will make it difficult to insert the instrument rigidly, and if the curvature radius is too large (such as R>15mm), the flexibility of turning around the bone tunnel will be reduced; and the central axis of the straight section of the sleeve 1 and the central axis of the arc-shaped cylinder form an acute angle deflection of about 5°~15°, so that the hook structure 13 forms a suture capture advantage position on the inner side of the instrument bend, which can further improve the suture grasping stability within this angle range.

[0044] In this embodiment, if Figure 3 As shown, the puncture end 11 is conical, which facilitates smooth penetration into the ligament tissue without causing additional damage; in other preferred embodiments, in order to adapt to different puncture objects, the puncture end 11 can also be a triangular pyramid or other cones.

[0045] like Figure 4 middle( a ) is a schematic diagram of a radial cross-section of the inner rod 2 and the sleeve 1 on the main body of the stapler, with a movable gap between the inner rod 2 and the sleeve 1. Figure 4 middle( b ) is a schematic diagram of a partial radial cross-sectional structure of the sleeve 1 and the inner rod 2 where the puncture end 11 is located, and the sleeve 1 and the inner rod 2 gradually become thinner in diameter.

[0046] like Figure 5 As shown, the inner wall of the operating end of the sleeve 1 is provided with a guide rib 12 and a stop ring 14 in sequence along the axial direction. The guide rib 12 is a convex ridge arranged along the axial direction, and the stop ring 12 is an annular structure arranged around the central axis of the sleeve 1. The surface of the annular structure is curved, and the inner rod 2 is inserted into the annular structure. There is a movable gap between the annular structure and the inner rod 2, so that the inner rod 2 can move freely within the annular structure. Specifically, the sleeve 1, the guide rib 12, and the stop ring 14 are all integrally formed to ensure the reliability of the sleeve 1 during use.

[0047] An elastic component is sleeved around the middle of inner rod 2. The end of the elastic component, closest to the control end of sleeve 1, is fixed to inner rod 2, while the remaining portion of the elastic component is spaced apart from inner rod 2 to ensure sufficient room for deformation. In this embodiment, the axial spacing between guide rib 12 and stop ring 14 is less than the axial height of the elastic component in its natural (uncompressed) state. This means that the elastic component remains compressed when positioned between guide rib 12 and stop ring 14, providing a preload.

[0048] Specifically, the elastic assembly includes a spring seat 21 and a spring 3. The spring 3 can be made of medical spring steel or stainless steel, exhibiting excellent elasticity and corrosion resistance. It also provides a stable elastic force during compression and release, ensuring the reliability of the suturing process. The spring seat 21 is designed as an annular base fixed around the inner rod 2 and integrally molded with the inner rod 2. The radial dimension of the spring seat 21 is larger than the outer diameter of the spring 3. An axially extending groove 213 is provided on the outer wall of the spring seat 21. The bottom of the groove 213 is positioned at a distance from the central axis of the inner rod 2 greater than the radius of the spring 3 to prevent interference with the compression of the spring 3 when the groove 213 slides with the guide rib 12. When the stapler is unlocked (i.e., when the thread-fixing hole 22 is not closed), the upper end of the spring 3 (i.e., the end closest to the control end of the sleeve 1) abuts the spring seat 21. In this embodiment, the radial cross-section of the groove 213 is semicircular, and the outer surface of the guide rib 12 is arc-shaped or semicircular to mate with the groove 213.

[0049] In this embodiment, to ensure that the inner rod 2 and the sleeve 1 are always integrally connected, a radially outwardly projecting stopper structure can be provided on the inner rod 2. This stopper structure is located on the inner rod 2 between the stopper ring 14 and the puncture end 11. When the inner rod 2 moves outward from the sleeve 1, causing the spring 3 to extend by a predetermined distance, the stopper structure abuts against the side of the stopper ring 14 facing away from the spring 3, preventing the inner rod 2 from moving further outward. Alternatively, the spring 3 can be fixedly connected to the spring seat 21 and the stopper ring 14, respectively, so that the inner rod 2, spring 3, and sleeve 1 are sequentially connected, thereby preventing the inner rod 2 from being dislodged from the sleeve 1.

[0050] The method of using the aforementioned stapler is as follows:

[0051] The suturing device is strictly sterilized, and the guide edge 12 and the slide groove 213 are in a matched state before piercing the ligament, so that the inner rod is locked in the direction of rotation around its central axis and is active in the direction of axial reciprocating motion. A pair of auxiliary control rings 5 outside the operating end of the sleeve 1 and the control ring 4 on the inner rod form a three-point fixed holding posture, which stably controls the insertion direction of the puncture end 11 and allows the tip of the puncture end 11 to accurately pass through the predetermined point. The sleeve barrel where the puncture end 11 is located is designed to have a certain bending amplitude, which enables the inner rod 2 to puncture synchronously with the anatomical structure, improves the directional adaptability of the suturing device under arthroscopy, and is conducive to the hooking structure 13 to accurately hook the anchor suture in the joint.

[0052] Push the control ring 5 to slowly move the inner rod 2 inward. When the elastic component is compressed until it reaches the predetermined stroke, the guide edge 12 and the slide groove 213 are as shown in FIG. Figure 6 As shown in FIG, the hooking structure 13 is disengaged from the tip of the inner rod 2 to form a Figure 2 The closed fixed line hole 22 shown in FIG. Then along Figure 6 Rotate the inner rod 2 in the direction of the arrow so that the inner rod 2 Figure 7 middle( a ) (looking down from the control end to the puncture end) changes to Figure 7 middle( b ) in the state shown, the guide edge 12 and the slide groove 213 are misaligned with each other, and the upper end surface of the spring seat 21 and the lower end surface of the guide edge 12 (i.e., the end surface close to the puncture end) are axially abutted and limited to maintain the closed state of the thread fixing hole 22 to prevent the suture from falling off or loosening.

[0053] After confirming that the suture is hooked by the hooking structure 13 and the anchoring hole 22 is closed, the entire puncture suture device is withdrawn to allow the anchor suture to pass smoothly through the ligament tissue. After all positions are sutured, the inner rod 2 is rotated in the opposite direction by the control ring 4 to return it to its original position. At the same time, the hooking structure 13 and the inner rod 2 are unlocked at the connection, and the suture is released from the side opening of the puncture end 11. Finally, the entire puncture suture device is withdrawn. After the operation, the suture points are inspected to confirm that the tension is appropriate to ensure a stable repair effect.

[0054] Traditional suture devices often use manual push-pull control of the inner rod, which then opens the suture hook mechanism outward. During surgery, the suture hook mechanism may be interfered with by the position of the joint cavity, resulting in limited opening and closing, and repeated angle adjustment is required to ensure the suture is secured. This embodiment achieves a locking function for the inner rod and the suture hole by controlling the extension and rotation of the finger ring and rotating the inner rod. This allows for quick and effective control of the suture, ensuring it does not fall off during the puncture process. It also avoids the space required for the suture hook ring to open and close outward, greatly improving the reliability and stability of the suturing process.

[0055] In this embodiment, the ratio of the outer diameter of the inner rod 2 to the inner diameter of the sleeve 1 is 3:4. The gap between the inner rod 2 and the inner rod 2 is suitable for sliding without resistance, and the inner rod 2 will not wobble or misalign within the sleeve 1. Specifically, the main body inner diameter of the sleeve 1 operating end can be selected to be 2.0mm, and the main body outer diameter of the inner rod 2 control end is designed to be 1.5mm. More specifically, the main body outer diameter of the sleeve 1 operating end can be selected to be 2.5mm, with a wall thickness of 0.5mm. The barrel at the puncture end 11 gradually tapers to the tip of the operating end; the end of the inner rod 2 that mates with the hook structure 13 can be designed as a thinner cone, with the cone gradually tapering from a 1mm rod to a conical tip. Conventional arthroscopic staplers are generally larger in diameter. During arthroscopic puncture, they are easily limited by the space in the joint cavity, making it difficult to achieve precise puncture in narrow areas such as the ankle and wrist joints. In contrast, the suturing device in this embodiment uses a smaller diameter inner rod and outer sleeve to reduce secondary damage to surrounding tissues.

[0056] Example 2

[0057] The difference between this embodiment and the aforementioned embodiment 1 is that: Figures 8 to 10 As shown, the spring seat 21 is a tubular structure sleeved on the inner rod 2. Figure 9 As shown, a rotating protrusion 211 is provided on the outer wall of one end of the tubular structure, and a convex ring 212 is provided on the outer wall of the other end thereof. The rotating protrusion 211 is located outside the sleeve 1, and the convex ring 212 is located inside the sleeve 1. The slide groove 213 is opened on the outer side wall of the convex ring 212. When the inner rod 2 reciprocates, the guide edge 12 slides relatively in the slide groove 213.

[0058] like Figure 11 As shown, the inner rod 2 is provided with a radially inwardly bent collar 23. The end of the tubular structure housing the rotating protrusion 211 is bent radially outward and axially secured to the collar 23. This means that the inner rod 2 and the tubular structure cannot reciprocate relative to each other in the axial direction, but can rotate relative to each other in the axial direction. When the inner rod 2 reciprocates axially, the collar 23 hooks onto the tubular spring seat 21 and reciprocates synchronously, while the rotating protrusion 211 drives the spring seat 21 to rotate relative to the inner rod 2.

[0059] The locking principle of the suture device provided in this embodiment is as follows: Figure 9 As shown in FIG, the inner rod 2 is controlled to move into the sleeve 1, and the spring 3 is compressed until the spring 3 is compressed to the Figure 10 When the predetermined stroke shown in FIG is reached, the chute 213 is separated from the guide edge 12. Figure 8 As shown in the partial enlarged view of the middle puncture end 11, the end of the inner rod 2 located in the sleeve 1 is in contact with the hook structure 13 to form a radial fixed hole 22. Figure 10Rotating the inner rod 2 in the direction indicated by the arrow in the figure causes the slide groove 213 to be misaligned with the guide rib 12. After the inner rod 2 is released, the left end surface of the protruding ring 212 axially abuts the right end surface of the guide rib 12, restricting the inner rod 2 from moving outward from the sleeve 1 (i.e., to the left in the figure). In this embodiment, by designing the spring seat 21 as a rotatable tubular structure that sleeves on the inner rod 2, the spring seat 21 can be rotated solely by rotating the protruding block 211, without rotating the inner rod 2. Compared to the method of rotating the inner rod 2 to drive the spring seat 21 in Example 1, the stapler provided in this application is more convenient and reliable when locked.

[0060] In summary, the suturing device provided in this embodiment possesses the following features: The controllable, retractable, rotating, and locking suture hook device precisely secures the suture, simplifies the puncture process, and improves puncture hook accuracy, addressing the shortcomings of traditional suturing devices such as suture shedding, poor puncture stability, and spatial interference. Its small diameter, locking puncture end structure, semi-arc-shaped puncture tip, and three-ring, three-point fixed control handle make it more adaptable to complex anatomical structures during arthroscopic ligament repair surgery, ensuring smooth passage of the suture through the ligament without falling off, thereby improving surgical precision and stability.

[0061] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components, or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0062] In addition, in this application, the expression "and / or" includes any and all combinations of the associated listed words. For example, the expression "A and / or B" may include A, may include B, or may include both A and B.

[0063] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after the connection. "Sliding connection" means that the two are connected to each other and can slide relative to each other after the connection. The directional terms mentioned in the embodiments of the present application, such as "top", "bottom", "inside", "outside", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0064] In addition, in the embodiments of the present application, the mathematical concepts mentioned include symmetry, equality, parallelism, and perpendicularity. These limitations are all for the current state of the art, rather than being absolutely strict definitions in a mathematical sense. A small amount of deviation is allowed, and it is possible to be approximately symmetric, approximately equal, approximately parallel, or approximately perpendicular. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0065] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A controllable telescopic locking puncture suture device for arthroscopic ligament repair, characterized in that: The invention comprises a sleeve (1) and an inner rod (2), wherein the sleeve (1) comprises an operating end and a puncture end (11), wherein the inner wall of the operating end is provided with a guide edge (12) and a stop ring (14), and the puncture end (11) is provided with a hooking structure (13); the inner rod (2) is inserted into the sleeve (1), one end of the inner rod (2) is located outside the sleeve (1) as a control end, and the other end is located inside the puncture end (11), and an elastic component is sleeved in the middle; the elastic component comprises a spring seat (2 1) and a spring (3), the spring (3) being located between the spring seat (21) and the stop ring (14), with one end abutting against the spring seat (21) and the other end being fixed to the stop ring (14); the spring seat (21) being a tubular structure sleeved on the inner rod (2), with a rotating convex block (211) and a convex ring (212) respectively provided on the outer walls of both ends of the tubular structure, the rotating convex block (211) being located outside the sleeve (1), and the convex ring (212) being located outside the sleeve (1), and the convex ring (212) being located outside the sleeve (1). Located in the sleeve (1); a sliding groove (213) cooperating with the guide rib (12) is provided on the outer wall of the convex ring (212); when the inner rod (2) reciprocates, the guide rib (12) slides relatively in the sliding groove (213); a sleeve ring (23) bent radially inward is provided on the inner rod (2); the end of the tubular structure where the rotating protrusion (211) is located is bent radially outward and is sleeved and fixed with the sleeve ring (23), and the two cannot be axially displaced. The spring seat (21) can move back and forth relative to the inner rod (2), but can rotate relative to the inner rod (2) along the axial direction. The spring seat (21) is fixed axially relative to the inner rod (2). When the inner rod (2) moves into the sleeve (1) to compress the spring (3) to a predetermined stroke, the slide groove (213) disengages from the guide rib (12), and the inner rod (2) cooperates with the wire hook structure (13) to form a wire fixing hole (22). The spring seat (21) can rotate around its axis to abut against the guide rib (12) along the axial direction for limiting position.

2. The controllable telescopic locking puncture suture device for arthroscopic ligament repair according to claim 1, characterized in that: The cylinder where the puncture end (11) is located is curved, and the hooking structure (13) is located on one side of the curvature center of the curved cylinder.

3. The controllable telescopic locking puncture suture device for arthroscopic ligament repair according to claim 1, characterized in that: The wire hook structure (13) is a barb extending axially toward the operating end, and the outer side of the barb is flush with the outer wall of the sleeve (1) where it is located.

4. The controllable telescopic locking puncture suture device for arthroscopic ligament repair according to claim 1, characterized in that: The axial spacing between the guide edge (12) and the stop ring (14) is smaller than the axial length of the elastic component in its natural state.

5. The controllable telescopic locking puncture suture device for arthroscopic ligament repair according to claim 1, characterized in that: The ratio of the outer diameter of the inner rod (2) to the inner diameter of the sleeve (1) is 3:

4.

6. The controllable telescopic locking puncture suture device for arthroscopic ligament repair according to claim 1, characterized in that: A control finger ring (4) is provided on the control end, and the center line of the control finger ring (4) is perpendicular to the center axis of the inner rod (2).

7. The controllable telescopic locking puncture suture device for arthroscopic ligament repair according to claim 6, characterized in that: An auxiliary control finger ring (5) is symmetrically arranged outside the operating end, and the center line of the auxiliary control finger ring (5) is parallel to the center line of the control finger ring (4).

8. The controllable telescopic locking puncture suture device for arthroscopic ligament repair according to claim 1, characterized in that: The radial cross-section of the chute (213) is semicircular.

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