Miniature anchor system with line

Abstract

The utility model discloses a miniature anchor system with a line, which comprises a miniature anchor with a line and an inserter, the miniature anchor with the line comprises an anchor body, a tip and a suture line, one end of the anchor body is provided with an end face, and the top of the other end of the anchor body protrudes outwards to form the tip. The anchor body is provided with a threading hole for the suture line to penetrate through, one side of the end face is connected with the anchor body through a fillet to form a cambered surface section, a second curved surface and a third curved surface, the minimum distance between the first curved surface and the end face is smaller than the minimum distance between the second curved surface and the end face, the suture line is pulled, and the suture line can penetrate through the anchor body. And when the micro anchor with the line slides from the second curved surface to the first curved surface, the micro anchor with the line can rotate.

Description

Technical Field

[0001] The utility model belongs to the field of medical equipment, and in particular relates to a micro-wire anchor system. Background Art

[0002] When tendons and collateral ligaments around joints such as hands and feet are ruptured or tendons and ligament attachment points are avulsed and fractured, in order to reconstruct the tendons or ligaments, it is necessary to fix the ligaments or tendons with micro-wire anchors. When used, the micro-wire anchor is implanted into the bone of the injured part, and the damaged tendon or ligament is sutured and fixed with sutures fixed on the micro-wire anchor. However, existing micro-wire anchors often have problems such as insufficient anchoring depth, loose fixation, and insufficient strength.

[0003] Therefore, providing a micro-belt-wire anchor system that simultaneously meets the requirements of anchoring depth and strength is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The utility model provides a micro-band wire anchor system, which can ensure the anchoring depth and strength of the micro-band wire anchor, making the fixation more firm;

[0005] The utility model also provides an inserter, which can effectively implant the micro-band wire anchor into a predetermined position and ensure the fixing depth thereof.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0007] A micro-stripline anchor system, comprising a micro-stripline anchor and an inserter matched therewith, characterized in that the micro-stripline anchor comprises an anchor body, a tip and a suture, one end of the anchor body has an end face, and the top of the other end protrudes outward to form the tip, the anchor body is provided with a threading hole for threading the suture, one side of the end face is connected to the anchor body through a fillet to form an arc segment, the inner wall of the threading hole comprises a first curved surface, a second curved surface and a third curved surface connected end to end in sequence, the minimum distance between the first curved surface and the end face is smaller than the minimum distance between the second curved surface and the end face, and when the suture is pulled to slide from the second curved surface to the first curved surface, the micro-stripline anchor can be rotated;

[0008] The inserter includes: a first handle, a second handle, a sleeve and a center rod, one end of the sleeve is coaxially fixedly connected to one end of the second handle, the second handle has a hollow cavity, one end of the center rod is fixedly connected to the first handle, and the other end passes through the hollow cavity and the sleeve to match and connect with the micro-strip line anchor.

[0009] Furthermore, a groove is arranged on the end surface.

[0010] Furthermore, the center line of the groove is not perpendicular to the end surface, and a first acute angle α is formed to satisfy: 85°≤α<90°.

[0011] Furthermore, a connection between the first curved surface and the second curved surface is convex to form a protrusion, and the protrusion is located in the threading hole.

[0012] Furthermore, the groove is communicated with the threading hole.

[0013] Furthermore, the first curved surface is smoothly connected to the second curved surface.

[0014] Furthermore, it also includes: a fixing block, which is arranged at the connection between the central rod and the first hand, and the fixing block can be rotatably matched in the hollow cavity.

[0015] Furthermore, a short rod is arranged at the end of the central rod, and the short rod can match the groove.

[0016] Furthermore, the center line of the short rod and the center line of the center rod form a second acute angle β, and the angle of the second acute angle β is the same as the angle of the first acute angle α.

[0017] Furthermore, wire accommodating grooves are provided on both sides of the outer walls of the first handle and the second handle.

[0018] Furthermore, the other end of the sleeve has an inclined surface.

[0019] The beneficial effects of the utility model are as follows: the utility model provides a micro-wire anchor, which, through the threading hole and groove structure design, can rely on adjusting the suture line to make the tip inserted into the side wall of the bone tunnel after being implanted in the bone tunnel, thereby ensuring the strength and depth of its anchoring and preventing it from coming out easily; at the same time, a matching inserter is also provided, which can drive the micro-wire anchor to rotate during implantation, thereby helping to better fix it; the utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a micro-strip wire anchor according to the first embodiment of the utility model;

[0021] Figure 2 A cross-sectional view of a micro-strip-wire anchor according to a first embodiment of the utility model;

[0022] Figure 3 It is a partial structural diagram of the cooperation between the micro-belt wire anchor and the inserter of the second embodiment of the utility model;

[0023] Figure 4 This is a structural exploded view of an inserter according to a third embodiment of the present utility model;

[0024] Figure 5 It is a partial enlarged view of the connection between the central rod and the short rod of the inserter of the third embodiment of the utility model;

[0025] Figure 6 This is an overall structural diagram of the inserter and the micro-wire anchor of the utility model.

[0026] Reference numerals include:

[0027] 100 - nail holder 110 - first handle 120 - second handle

[0028] 130 - center rod 140 - sleeve 150 - fixed block

[0029] 160—wire trough 131—short rod 141—inclined surface

[0030] 200 - micro-wire anchor 210 - anchor body 220 - tip

[0031] 230—end surface 240—threading hole 250—suture line

[0032] 260—groove 270—arc segment 241—first curved surface

[0033] 242 - second curved surface 243 - third curved surface 244 - convex surface DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] like Figure 1 , Figure 2 and Figure 6 As shown, the utility model provides a first embodiment of a micro-band wire anchor 200, including an anchor body 210, a tip 220 and a suture 250. The anchor body 210 can be cylindrical or as Figure 1 The anchor body 210 is a block-shaped structure shown in FIG. 1 . One end of the anchor body 210 is an end face 230. The end face 230 can be a plane or other irregular shapes. The connection between the end face 230 and the anchor body 210 is a rounded connection to form an arc segment 270. The arc segment 270 facilitates the anchor body 210 to rotate relative to the inserter 100. The top of the other end of the anchor body 210 bulges outward to form a tip 220. The tip 220 is convenient for implantation into the bone tunnel and insertion into the side wall of the bone tunnel. The middle position of the anchor body 210 is provided with a suture 25 for passing through. 0, the inner wall of the threading hole 240 includes a first curved surface 241, a second curved surface 242 and a third curved surface 243 connected in sequence end to end, wherein the first curved surface 241 and the second curved surface 242 are close to one end of the end surface, the third curved surface 243 is close to one end of the tip 220, and the minimum distance between the first curved surface 241 and the end surface 230 is smaller than the minimum distance between the second curved surface 242 and the end surface 230, that is, the connection between the first curved surface 241 and the second curved surface 242 is convex to form a protrusion 244, and the protrusion 244 is in the threading hole 240. During the implantation process, the suture 250 is preliminarily located at the position of the second curved surface 242. After reaching the implantation position, the suture 250 is pulled to slide from the second curved surface 242 to the first curved surface 241, which can drive the micro-band wire anchor to rotate, so that the tip 220 is inserted into the bone tunnel wall to fix it.

[0039] like Figure 2 As shown, a groove 260 cooperating with the inserter is provided on the end face 230, the center line of the groove 260 is not perpendicular to the end face 230, and a first acute angle α is formed to satisfy: 85°≤α<90°, and the groove 260 with a slight inclination angle cooperates with the inserter 100. When the inserter 100 is pulled out after being implanted in the bone tunnel, the reaction force of the inserter on the groove 260 has a component force in a direction perpendicular to the end face 230, thereby driving the micro-wire anchor 200 to rotate.

[0040] like Figure 3As shown, the utility model provides a second embodiment of a micro-strip wire anchor 200, the structure of which is basically the same as that of the first embodiment, except that the structure of the groove 260 and the threading hole 240, the cross section of the threading hole 240 is elliptical, that is, the first curved surface 241 and the second curved surface 242 are smoothly connected. The groove 260 is connected to the threading hole 240, and the inserter 100 can be inserted into the groove 260 and enter the threading hole 240, the first curved surface 241 and the second curved surface 242 are distinguished, and the threading hole 240 can be divided into two parts without additional structure, which is convenient for manufacturing. During the implantation process, the suture 250 is pre-set in the threading hole 240 and is located on the right side of the inserter 100 (the second curved surface 242). After implantation into the bone tunnel, the inserter 100 is pulled out, and the suture 250 is pulled to slide to the left side of the threading hole 240 (the first curved surface 241), driving the micro-strip wire anchor 200 to rotate.

[0041] like Figure 4 , Figure 5 and Figure 6 As shown, the utility model also provides an inserter 100, which mainly includes a first handle 110, a second handle 120, a sleeve 140 and a center rod 130. The second handle 120 has a hollow cavity 121, one end of the sleeve 140 is coaxially fixedly connected to the second handle 120, and the other end of the sleeve 140 has an inclined surface 141, and the inclined surface 141 can match the arc surface segment 270 of the micro stripline anchor 200. One end of the center rod 130 is coaxially fixedly connected to the first handle 110, and the other end passes through the hollow cavity 121 and the sleeve 140, and matches the groove 260 of the micro stripline anchor 200. A fixing block 150 is provided at the connection between the first handle 110 and the center rod 130, and the fixing block 150 can be rotatably matched in the hollow cavity 121, so that the first handle 110 and the second handle 120 are assembled together, and the first handle 110 can rotate or axially move relative to the second handle 120.

[0042] In another embodiment, a short rod 131 is provided at the end of the center rod 130, the short rod 131 is not coaxial with the center rod 130, and the center line of the short rod 131 forms a second acute angle β with the center line of the center rod 130, and the angle of the second acute angle β is the same as the angle of the first acute angle α, and the short rod 131 can match the inclined groove 260.

[0043] like Figure 4 As shown, both sides of the outer wall of the first handle 110 and the second handle 120 are provided with a wire accommodating groove 160 , and the wire accommodating groove 160 is used to accommodate the suture 250 .

[0044] During the specific implantation process, the short rod 131 of the inserter 100 is inserted into the groove 260 (or extended into the threading hole 240 to separate the threading hole 240 into two parts), the suture 250 passes through the threading hole 240 and is located at the second curved surface 242, and the two ends of the suture 250 are placed in the wire accommodating groove 160, and then the micro-strip wire anchor 200 is implanted into the bone tunnel to reach a predetermined position, and the first handle 110 is pulled out to make the center rod 130 disengage from the groove 260, and drive the micro-strip wire anchor 200 to rotate, and at the same time adjust the pulling suture 250 to slide to the first curved surface 241, and at the same time drive the micro-strip wire anchor 200 to rotate around the inclined surface 141 of the sleeve 140, so that the tip 220 of the micro-strip wire anchor 200 is inserted into the side wall of the bone tunnel, and then withdraw the inserter to complete the fixation.

[0045] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scopes based on the ideas of the present invention. As long as these changes do not deviate from the concept of the present invention, they all belong to the protection scope of the present invention.

Claims

1. A micro-stripline anchor system, comprising a micro-stripline anchor (200) and an inserter (100) used in conjunction therewith, characterized in that: The micro stripline anchor (200) comprises an anchor body (210), a tip (220), an end face (230) and a suture (250); one end of the anchor body (210) comprises the end face (230), and the top of the other end protrudes outward to form the tip (220); the anchor body (210) is provided with a threading hole (240) for threading the suture (250); the inner wall of the threading hole (240) comprises a first curved surface (241) and a second curved surface (242) connected to each other; the minimum distance between the first curved surface (241) and the end face (230) is smaller than the minimum distance between the second curved surface (242) and the end face (230); when the suture (250) is pulled to slide from the second curved surface (242) to the first curved surface (241), the micro stripline anchor (200) can be rotated; The inserter (100) comprises: a first handle (110), a second handle (120), a sleeve (140) and a central rod (130); one end of the sleeve (140) is coaxially fixedly connected to one end of the second handle (120); the second handle (120) has a hollow cavity (121); one end of the central rod (130) is fixedly connected to the first handle (110), and the other end passes through the hollow cavity (121) and the sleeve (140) to match and connect with the micro stripline anchor (200).

2. The micro-stripline anchor system according to claim 1, characterized in that: The end surface (230) is provided with a groove (260), the center line of the groove (260) is not perpendicular to the end surface (230), and a first acute angle α is formed that satisfies: 85°≤α<90°.

3. The micro-stripline anchor system according to claim 2, characterized in that: One side of the end surface (230) is connected to the anchor body (210) via a rounded corner to form a curved surface segment (270).

4. The micro-stripline anchor system according to claim 3, characterized in that: The groove (260) is in communication with the threading hole (240).

5. The micro-stripline anchor system according to claim 4, characterized in that: It also includes a third curved surface, wherein the first curved surface (241) is smoothly connected to the second curved surface (242).

6. The micro stripline anchor system according to claim 5, characterized in that: Also includes: A fixing block (150), wherein the fixing block (150) is arranged at the connection between the central rod (130) and the first handle (110), and the fixing block (150) is rotatably matched in the hollow cavity (121).

7. The micro stripline anchor system according to claim 6, characterized in that: A short rod (131) is provided at the end of the central rod (130), and the short rod (131) matches the groove (260).

8. The micro stripline anchor system according to claim 7, characterized in that: The center line of the short rod (131) and the center line of the center rod (130) form a second acute angle β, and the angle of the second acute angle β is the same as the angle of the first acute angle α.

9. The micro stripline anchor system according to claim 8, characterized in that: The other end of the sleeve (140) has an inclined surface (141).

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