Anchor nail with wire

Abstract

The present application discloses a wire anchor, which relates to the technical field of medical devices, including a nail body and a cone head, wherein the cone head is integrally formed at one end of the nail body, a mounting hole is provided in the center of the nail body along its length direction, which passes through the nail body away from the cone head, and a plurality of through holes connected to the mounting hole are provided on the side wall of the nail body; a multi-claw structure is provided in the mounting hole, and the multi-claw structure includes a plurality of claws, which can be elastically deformed and correspondingly plugged into the through hole one by one, and the ends extend out of the side wall of the nail body, and the claws have an arc along the length direction away from the cone head. The present application has the effect of reducing the occurrence of the wire anchor inserted into the patient's bone being easy to fall off.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a wire anchor. Background Art

[0002] The wire anchor is a very small implant used to fix sutures in the bone. The wire anchor can be used to repair ruptures of tendinous insertions throughout the body. After the wire anchor is driven into the bone, the suture is passed through the soft tissue with a needle and tied to fix the soft tissue to the anchor, i.e. the bone surface, thereby achieving reconnection of the soft tissue and bone.

[0003] At present, in the operation using the wire anchor, the doctor usually drills a bone tunnel on the bone, screws the anchor inward, and sets a thread on the outside of the anchor to enhance the anchoring force between the anchor and the bone. The front end of the wire anchor is also provided with a through hole for the suture to pass through and wrap around.

[0004] However, when using the wire anchor in the related technology to perform soft tissue and bone suturing surgery on patients, if the doctor pulls the suture thread with great force, it is easy to cause the anchor to fall off; especially when the anchor thread is narrow, the thread may even be damaged, eventually causing the anchor to fall off. Summary of the invention

[0005] In order to improve the problem that the wire anchor inserted into the patient's bone is easy to fall off, the present application provides a wire anchor.

[0006] The present application provides a wire anchor, which adopts the following technical solution:

[0007] A wire anchor nail, comprising a nail body and a cone head, wherein the cone head is integrally formed at one end of the nail body, a mounting hole is provided in the center of the nail body along its length direction and passes through a side of the nail body away from the cone head, and a plurality of through holes are provided on the side wall of the nail body that are connected to the mounting hole;

[0008] A multi-claw structure is provided in the mounting hole, and the multi-claw structure includes a plurality of claws. The plurality of claws can be elastically deformed and inserted into the through hole one by one, and the ends extend out of the side wall of the nail body, and the claws have an arc along their length direction away from the direction of the cone head.

[0009] By adopting the above technical solution, after the anchor is driven into the bone, a force is applied to the multi-claw structure toward the cone head, so that the multiple claws can penetrate into the bone through the through hole, thereby enhancing the anchoring force between the anchor and the bone, making it difficult for the anchor to fall off the bone; at the same time, the claws are set away from the arc of the cone head, so that when the anchor is subjected to an outward pulling force, the claws can better grasp the bone, the force direction of the claws is more reasonable, and the outward pulling force can be resisted more efficiently, further reducing the possibility of the anchor falling off the bone under the action of the pulling force.

[0010] Optionally, the mounting hole is a polygonal hole, and the through holes are all opened at the corners of the mounting hole.

[0011] By adopting the above technical solution, since the through hole is opened at the corner, the claw is also correspondingly arranged at the corner, and the mounting hole is set as a polygonal hole, so that when the claw moves downward driven by the connecting rod, it is not easy to rotate due to the restriction of the side of the polygonal mounting hole, and thus it can be smoothly inserted into the through hole on the same vertical line with it.

[0012] Optionally, a connecting rod is also provided in the mounting hole, and the connecting rod includes a threaded rod and a cap fixed at one end of the threaded rod. The threaded rod passes through the middle part of the multi-claw structure and is rotatably connected to the multi-claw structure. An anchor hole is opened on the bottom wall of the mounting hole along the length direction of the nail body, and the threaded rod can be threadedly connected to the anchor hole.

[0013] By adopting the above technical solution, the medical staff rotates the connecting rod so that the connecting rod can be threaded into the anchor hole. When the connecting rod moves into the anchor hole, it can simultaneously drive the multi-claw structure that is rotatably connected to it to move in the direction close to the cone head until the claws extend from the through hole; by rotationally connecting the multi-claw structure and the connecting rod, when the knob of the connecting rod is turned in the direction close to the cone head, the multi-claw structure will not rotate with the connecting rod, and the multi-claw structure can also move in the direction close to the cone head.

[0014] Optionally, the through holes are arranged in a group, and the group of through holes is located at 1 / 2 or 2 / 3 of the length direction of the nail body.

[0015] By adopting the above technical solution, for osteoporosis patients, since the bone density and bone quality are lower than those of normal bones, the anchoring force between the bone and the anchor is prone to failure. Therefore, two types of anchors are set. The through hole of one type of anchor is located at 1 / 2 of the length of the nail body, which is used to be driven into normal bones; the through hole of one type of anchor is located at 2 / 3 of the length of the nail body, which is used to be driven into the body of osteoporosis patients, thereby reducing the possibility of failure of the connection between the anchor and the bone when driven into the body of osteoporosis patients.

[0016] Optionally, the through holes are provided in multiple groups, and the multiple groups of through holes are respectively located at different heights in the length direction of the nail body;

[0017] The multi-claw structures are also provided in plurality, and the multi-claw structures can be respectively and correspondingly inserted into each group of through holes.

[0018] By adopting the above technical solution, multiple groups of through holes and multi-claw structures are set, so that multiple groups of multi-claw structures can pass through the through holes and anchor into the bones at the same time. Setting multiple groups of multi-claw structures to achieve multiple anchoring can further enhance the anchoring force between the anchor and the bone and reduce the possibility of the anchor detaching from the bone.

[0019] Optionally, a connecting tube is fixed between two adjacent multi-claw structures, and the fixing point of the connecting tube and the multi-claw structure is located at the bending section of the claws.

[0020] By adopting the above technical solution, if multiple multi-claw structures are provided, the multi-claw structure that cannot contact the cap cannot be subjected to the extrusion force applied by the cap to the multi-claw structure toward the cone head, and a connecting tube is provided between two multi-claw structures so that the extrusion force applied by the cap to one multi-claw structure can be transmitted to the adjacent multi-claw structure through the connecting tube, thereby allowing the claws contained in the clamping column structure that is in contact with the cap to smoothly pass through the through hole and penetrate into the bone.

[0021] Optionally, an abutment platform is provided between two adjacent groups of through holes, and two adjacent claw structures are respectively located on both sides of the abutment platform, and the abutment platform is fixed to the side wall of the mounting hole.

[0022] By adopting the above technical solution, since multiple multi-claw structures are provided, the multi-claw structure that cannot contact the bottom wall of the mounting hole only relies on the limiting effect of the connecting rod on the multi-claw structure to maintain a fixed position, which has poor stability and the connection between the multi-claw structure and the connecting rod is prone to failure; an abutment platform is provided so that the abutment platform can support the multi-claw structure, thereby achieving position fixation of the multi-claw structure.

[0023] Optionally, a clamping tooth is provided on the side wall of the end of the clamping claw close to the connecting rod, and the clamping tooth is opened in the curved section of the clamping claw;

[0024] When the cap is in contact with the claw, the edge of the cap covers the surface of the tooth.

[0025] By adopting the above technical solution, the connecting rod is arranged in the mounting hole, and the multi-claw structure is driven to move in the direction close to the cone head until the multi-claw structure is clamped between the cover cap and the bottom wall of the mounting hole. The cover cap presses the curved section of the claw, making it easier for the claw to pass through the through hole and penetrate into the bone. A latch tooth is arranged in the curved section, so that the friction between the cover cap and the latch tooth is increased, so that the cover cap can better press the claw in the direction close to the cone head.

[0026] Optionally, the end of the claw away from the cone head is provided with a serrated structure.

[0027] By adopting the above technical solution and providing a serrated structure at the end of the clamping claw away from the cone head, the contact area between the clamping claw and the bone can be increased, thereby further increasing the anchoring force between the clamping claw and the bone.

[0028] Optionally, the nail body is provided with a threaded tooth, the nail body is provided with a through hole penetrating through the side wall of the nail body, and the opening direction of the through hole is perpendicular to the length axis of the nail body;

[0029] The side wall of the nail body is also provided with two slide grooves connected with the through holes, and the depth of the two slide grooves is deeper than the thickness of the thread teeth.

[0030] By adopting the above technical solution, when threading the suture in the anchor, one end of the suture can be passed through the perforation, and the two ends of the suture can be pulled out along the two slide grooves respectively, thereby realizing the connection between the anchor and the suture; a slide groove deeper than the thickness of the thread tooth is set, so that after the anchor is nailed into the bone, the suture can still slide in the slide groove, thereby realizing the normal progress of the operation.

[0031] In summary, the present application includes at least one of the following beneficial effects:

[0032] 1. The anchor of the present application is provided with a multi-claw structure and a through hole, so that the claws can pass through the anchor from the through hole and penetrate into the bone, thereby enhancing the anchoring force between the anchor and the bone and reducing the possibility of the anchor detaching from the bone;

[0033] 2. A serrated structure is provided at the end of the claw, so that after the claw is anchored in the bone, the contact area between the claw and the bone is increased, thereby increasing the friction between the claw and the bone, further enhancing the anchoring force between the claw and the bone;

[0034] 3. This application provides three types of anchors, and the anchoring strength of each anchor is different. Medical staff can choose anchors with different anchoring strengths according to the specific conditions of the patients to meet different treatment needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the overall structure of the anchor with wire in Example 1 of the present application;

[0036] Figure 2 It is a partial cross-sectional schematic diagram of the anchor with wire in Example 1 of the present application;

[0037] Figure 3 This is a schematic structural diagram of the multi-claw structure of Example 1 of the present application;

[0038] Figure 4 This is a schematic structural diagram of a connecting rod and a multi-claw structure of Example 2 of the present application;

[0039] Figure 5 It is a partial cross-sectional schematic diagram of the anchor with wire in Example 2 of the present application;

[0040] Figure 6 This is a schematic diagram of the overall structure of the anchor with wire in Example 5 of the present application;

[0041] Figure 7 It is a partial cross-sectional schematic diagram of the wire anchor according to Example 5 of the present application.

[0042] Explanation of the accompanying drawings: 1. nail body; 11. mounting hole; 12. through hole; 13. anchor hole; 14. threaded tooth; 15. through hole; 16. slide groove; 2. cone head; 3. multi-claw structure; 31. claw; 311. tooth; 32. center disk; 33. first multi-claw structure; 34. second multi-claw structure; 4. connecting rod; 41. cover cap; 411. rotating groove; 42. threaded rod; 5. abutment platform; 6. connecting cylinder. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-7 This application is described in further detail.

[0044] Example 1

[0045] Reference Figure 1 , Embodiment 1 of the present application provides a wire anchor, comprising a nail body 1 and a cone head 2, the cone head 2 is integrally formed at one end of the nail body 1, the nail body is a column with its axis facing the cone head, and a screw thread 14 is arranged outside the nail body 1, so that after the anchor is screwed into the bone, there is an anchoring force between the anchor and the bone to prevent the anchor from being separated from the bone. A through hole 15 for threading a suture is provided on the side wall of the nail body 1 at one end close to the cone head 2, and both ends of the through hole 15 pass through the side wall of the nail body 1, and the opening direction is perpendicular to the length axis of the nail body 1, and at the same time, two parallel slide grooves 16 are provided on the side wall of the nail body 1 along the length direction of the nail body 1, and the two slide grooves 16 are symmetrically arranged on both sides of the axis of the nail body 1 and are both connected to the through hole 15, and the slide groove 16 passes through the end of the nail body 1 away from the cone head 2, and the opening depth of the slide groove 16 is deeper than the thickness of the screw thread 14.

[0046] Reference Figure 1 When threading the suture, first pass one end of the suture through the perforation 15, and then pull the two ends of the suture out along the two slide grooves 16. When the suture passes through the perforation 15 and is located in the slide groove 16, the anchor is driven into the bone. At this time, the thread teeth 14 on the nail body 1 are anchored to the bone. Since the depth of the slide groove 16 is deeper than the thickness of the thread teeth 14, the suture can still slide in the slide groove 16, reducing the possibility that the suture and the thread teeth 14 are anchored to the bone together.

[0047] Reference Figure 1 and Figure 2 A mounting hole 11 is provided at one end of the nail body 1 away from the cone head 2. The mounting hole 11 is provided along the length direction of the nail body 1. The cross section of the mounting hole 11 is a polygon. In the embodiment 1 of the present application, the cross section of the mounting hole 11 is a regular hexagon. A multi-claw structure 3 is provided in the mounting hole 11. The multi-claw structure 3 includes a center disk 32 and a plurality of claws 31. The plurality of claws 31 are arranged at intervals around the center disk 32. In the embodiment of the present application, each multi-claw structure 3 includes three claws 31 arranged at equal angles around the center disk 32. The claws 31 are made of a non-absorbable elastic material.

[0048] Reference Figure 1 and Figure 2 The side wall of the nail body 1 is also provided with a plurality of through holes 12 corresponding to the number and position of the claws 31. Specifically, the connecting line of each claw 31 and the corresponding through hole 12 is parallel to the axis of the nail body 1. In the embodiment of the present application, preferably three through holes 12 are provided, and the through holes 12 are all arranged at the corners of the mounting hole 11. The through holes 12 are connected to the mounting hole 11 and pass through the side wall of one side of the nail body 1.

[0049] Reference Figure 1 and Figure 2 The multi-claw structure 3 is fixed on the bottom wall of the mounting hole 11. Before the anchor is driven into the bone, the claws 31 are retracted to the side of the through hole 12 away from the cone head 2, and the claws 31 abut against the side wall of the mounting hole 11. After the medical staff drives the anchor into the bone, by pushing the claws 31 toward the cone head 2, the ends of the claws 31 can extend out of the through hole 12 and the side wall of the nail body 1 and penetrate into the bone, thereby enhancing the anchoring force between the anchor and the bone and reducing the possibility of the anchor detaching from the bone.

[0050] Reference Figure 2 and Figure 3 The claw 31 also has an arc along its length direction away from the cone head 2, and a serrated structure is provided at one end of the claw 31 away from the center disk 32. After the anchor is driven into the bone, during the movement, if the anchor is subjected to an external pulling force that causes it to be separated from the bone, the claw 31 is provided with an arc away from the cone head 2 so that the claw 31 can better grasp the bone, and the arc direction makes the claw 31 more effective in resisting the external pulling force, making it difficult for the anchor to be separated from the bone under the action of the pulling force; at the same time, the serrated structure is provided at the end of the claw 31, which can increase the contact area between the claw 31 and the bone, thereby increasing the friction between the claw 31 and the bone and enhancing the anchoring force between the claw 31 and the bone.

[0051] Embodiment 1 of the present application also provides a delivery device for driving the wire anchor in Embodiment 1 of the present application into a bone, including a pusher head for pushing the claw 31 to move toward the direction close to the cone head 2, the cross-sectional shape of the pusher head is the same as the cross-sectional shape of the mounting hole 11, and when the pusher head slides along the mounting hole 11, the side wall of the pusher head contacts the side wall of the mounting hole 11.

[0052] The implementation principle of the wire anchor in Example 1 of the present application is as follows: in the surgical preparation stage, first insert the suture into the perforation 15 of the anchor, and pull out the two ends of the suture along the slide groove 16. In the surgical stage, the doctor drills a bone tunnel on the surface of the bone and screws the wire anchor inward. After the wire anchor is anchored into the bone, the pusher head at the end of the delivery device is pushed into the mounting hole 11, and the claw 31 in the mounting hole 11 is pushed, so that the claw 31 can pass through the through hole 12 and extend out of the side wall of the anchor and penetrate into the bone, so as to further enhance the anchoring force of the anchor in the bone.

[0053] Example 2

[0054] The difference between the present embodiment and embodiment 1 is that: Figure 1 and Figure 4 A connecting rod 4 is also provided in the mounting hole 11, and the connecting rod 4 includes a threaded rod 42 and a cap 41. The multi-claw structure 3 is sleeved on the threaded rod 42. Specifically, a circular hole is opened on the center disk 32, and the diameter of the circular hole is smaller than the outer diameter of the thread teeth 14 on the threaded rod 42, so that the multi-claw structure 3 can be rotatably connected to the threaded rod 42 and is not easy to separate from the connecting rod 4.

[0055] Reference Figure 4 and Figure 5 The bottom wall of the mounting hole 11 is also provided with an anchor hole 13 along the length direction of the nail body 1, and the depth of the anchor hole 13 is not less than the length of the threaded rod 42. The doctor can rotate the connecting rod 4 to thread the connecting rod 4 into the anchor hole 13, and the threaded rod 42 moves into the anchor hole 13, driving the multi-claw structure 3 to move toward the anchor hole 13 until the multi-claw structure 3 is clamped between the cap 41 and the bottom wall of the mounting hole 11, and stops rotating the threaded rod 42. At this time, multiple claws 31 extend from the through hole 12 and anchor into the bone.

[0056] Reference Figure 4 The surface of the cap 41 away from the threaded rod 42 is also provided with a rotation groove 411 to facilitate the doctor to rotate the connecting rod 4. The rotation groove 411 can be cross-shaped or straight-shaped.

[0057] Reference Figure 4 and Figure 5 A latching tooth 311 is further provided on the side wall of the claw 31 close to the center disk 32. The latching tooth 311 extends to the curved section of the claw 31, and when the multi-claw structure 3 is clamped between the cap 41 and the bottom wall of the mounting hole 11, the cap 41 covers the latching tooth 311. The latching tooth 311 is provided on the curved section of the claw 31. When the multi-claw structure 3 is clamped between the cap 41 and the bottom wall of the mounting hole 11, the cap 41 can apply a force toward the through hole 12 to the curved section of the claw 31, so that the claw 31 can smoothly extend from the through hole 12 and anchor into the bone.

[0058] Embodiment 2 of the present application also provides a delivery device for driving the wire anchor in Embodiment 2 of the present application into the bone, including a drill bit for rotating the connecting rod 4 into the anchor hole 13, and the cross-sectional shape and size of the drill bit are the same as the rotating groove 411 opened on the cap 41.

[0059] The implementation principle of the wire anchor in Example 2 of the present application is as follows: after the doctor drives the wire anchor into the bone, he inserts the drill bit at the end of the delivery device into the rotating groove 411 on the surface of the cap 41, rotates the connecting rod 4, and moves the connecting rod 4 toward the anchor hole 13, while driving the multi-claw structure 3 to move toward the anchor hole 13. When the multi-claw structure 3 is in contact with the cap 41 and the bottom wall of the mounting hole 11 at the same time, the connecting rod 4 continues to rotate, and the cap 41 applies pressure to the curved section of the claw 31 toward the through hole 12 until the multi-claw structure 3 is clamped between the cap 41 and the bottom wall of the mounting hole 11 and stops rotating, and the claw 31 has extended out of the through hole 12 and anchored into the bone.

[0060] Example 3

[0061] The difference between the embodiment of the present application and embodiments 1 and 2 is that: on the basis of embodiment 1 or 2, it is further defined that the through hole 12 is set at the 1 / 2 position in the length direction of the nail body 1, and this type of anchor is used for patients with normal bone.

[0062] Example 4

[0063] The difference between the embodiment of the present application and embodiments 1 and 2 is that: on the basis of embodiment 1 or 2, it is further defined that the through hole 12 is arranged at the 2 / 3 position in the length direction of the nail body 1, and this type of anchor nail is used for patients with osteoporosis.

[0064] Example 5

[0065] The difference between the present embodiment and embodiment 2 is that: Figure 6 and Figure 7 There are two groups of through holes 12, and the two groups of through holes 12 are respectively located at different heights of the nail body 1. There are also two multi-claw structures 3, and the two multi-claw structures 3 can be respectively plugged into the two groups of through holes 12, and the threaded rod 42 passes through the two multi-claw structures 3 and is rotatably connected to the multi-claw structures 3. When the anchor is not driven into the bone, the two multi-claw structures 3 are retracted in the mounting hole 11, and the claws 31 are against the side walls of the mounting hole 11. One of the multi-claw structures 3 is located between the two groups of through holes 12, serving as the first multi-claw structure 33; the other multi-claw structure 3 is located on the side of the two groups of through holes 12 away from the cone head 2, serving as the second multi-claw structure 34. A connecting tube 6 is provided between the two multi-claw structures 3, and the two ends of the connecting tube 6 are respectively fixedly connected to the bent sections of the claws 31 of the multi-claw structures 3 on both sides.

[0066] Reference Figure 6 and Figure 7 A contact platform 5 located between the two through holes 12 is also provided in the mounting hole 11 , the side of the contact platform 5 is fixedly connected to the inner wall of the mounting hole 11 , and the connecting rod 4 passes through the contact platform 5 , and the two multi-claw structures 3 are respectively located on both sides of the contact platform 5 .

[0067] Reference Figure 6 and Figure 7 When the medical staff moves the threaded rod 42 toward the cone head 2, the two multi-claw structures 3 can be synchronously driven to move toward the cone head 2 until the first multi-claw structure 33 abuts against the bottom wall of the mounting hole 11, and the second multi-claw structure 34 abuts against the abutment platform 5. At this time, the second multi-claw structure 34 abuts between the cap 41 and the abutment platform 5, and the claws 31 of the second multi-claw structure 34 extend from the through hole 12 due to the squeezing force of the cap 41; at the same time, under the connecting action of the connecting tube 6, the deformation of the second multi-claw structure 34 can be transmitted to the first multi-claw structure 33, so that the claws 31 of the first multi-claw structure 33 also extend from the through hole 12 and penetrate into the bone.

[0068] The two multi-claw structures 3 in Example 5 of the present application can be fixed on the bottom wall of the mounting hole 11 at the same time, and can also be rotatably connected to the connecting rod 4.

[0069] The implementation principle of a wire anchor in an embodiment of the present application is as follows: for patients with poor bone condition, multiple multi-claw structures 3 are arranged in the mounting hole 11, so that the multiple multi-claw structures 3 can pass through multiple groups of through holes 12 at the same time and be anchored in the bone, thereby realizing triple anchoring between the anchor and the bone. The first anchoring is the connection between the threaded teeth 14 of the anchor rod side wall and the bone, the first anchoring is the anchoring between the first multi-claw structure 33 and the bone, and the first anchoring is the anchoring between the second claw 31 and the bone. Through this triple anchoring, the anchoring force between the anchor and the bone is enhanced, making it difficult for the anchor to detach from the bone.

[0070] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wire anchor nail, comprising a nail body (1) and a cone head (2), wherein the cone head (2) is integrally formed at one end of the nail body (1), characterized in that: A mounting hole (11) is provided at the center of the nail body (1) along its length direction and passes through the side of the nail body (1) away from the cone head (2); a plurality of through holes (12) are provided on the side wall of the nail body (1) and are connected to the mounting hole (11); A multi-claw structure (3) is provided in the mounting hole (11), the multi-claw structure (3) comprising a plurality of claws (31), the plurality of claws (31) being elastically deformable and plugged into the through hole (12) in a one-to-one correspondence, with ends extending out of the side wall of the nail body (1), the claws (31) having an arc along their length direction away from the cone head (2); A connecting rod (4) is also provided in the mounting hole (11), the connecting rod (4) comprising a threaded rod (42) and a cap (41) fixed to one end of the threaded rod (42), the threaded rod (42) passing through the middle of the multi-claw structure (3) and being rotatably connected to the multi-claw structure (3), an anchor hole (13) is provided on the bottom wall of the mounting hole (11) along the length direction of the nail body (1), and the threaded rod (42) can be threadedly connected to the anchor hole (13); The through holes (12) are provided in a plurality of groups, and the plurality of groups of through holes (12) are respectively located at different heights in the length direction of the nail body (1); the multi-claw structures (3) are also provided in a plurality, and the plurality of multi-claw structures (3) can be respectively and correspondingly inserted into each group of through holes (12); A connecting tube (6) is fixed between two adjacent multi-claw structures (3), and a fixing point between the connecting tube (6) and the multi-claw structure (3) is located at a curved section of the clamping claw (31); An abutment platform (5) is provided between two adjacent groups of through holes (12), and two adjacent claw (31) structures are respectively located on both sides of the abutment platform (5), and the abutment platform (5) is fixed to the side wall of the mounting hole (11).

2. A wire anchor according to claim 1, characterized in that: The mounting hole (11) is a polygonal hole, and the through holes (12) are all opened at the corners of the mounting hole (11).

3. The wire anchor according to claim 1, characterized in that: The through holes (12) are arranged in a group, and the group of through holes (12) is located at 1 / 2 or 2 / 3 of the length direction of the nail body (1).

4. The wire anchor according to claim 1, characterized in that: A latching tooth (311) is provided on a side wall of the end of the latching claw (31) close to the connecting rod (4), and the latching tooth (311) is provided in a curved section of the latching claw (31); When the cover cap (41) and the claw (31) are in contact, the edge of the cover cap (41) covers the surface of the claw (311).

5. The wire anchor according to claim 1, characterized in that: The end of the claw (31) away from the cone head (2) is provided with a sawtooth structure.

6. The wire anchor according to claim 1, characterized in that: The nail body (1) is provided with a screw thread (14) on the outside, and a through hole (15) is provided on the nail body (1) and passes through the side wall of the nail body (1), and the opening direction of the through hole (15) is perpendicular to the length axis of the nail body (1); The side wall of the nail body (1) is also provided with two slide grooves (16) connected to the through holes (15), and the depth of the two slide grooves (16) is deeper than the thickness of the thread teeth (14).

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