CN116269565A

CN116269565A - Anchor with wire

Info

Publication number: CN116269565A
Application number: CN202310403830.8A
Authority: CN
Inventors: 孔庆俊; 高腾; 黎建波; 廉文旭
Original assignee: Beijing Deyidamei Medical Technology Co ltd
Current assignee: Beijing Deyidamei Medical Technology Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-06-23

Abstract

The application discloses a belted line anchor nail relates to the technical field of medical equipment, and comprises a nail body and a conical head, wherein the conical head is integrally formed at one end head of the nail body, the center of the nail body is provided with a mounting hole penetrating through the nail body and far away from one side of the conical head along the length direction of the nail body, and the side wall of the nail body is provided with a plurality of through holes communicated with the mounting hole; the mounting hole is internally provided with a multi-claw structure, the multi-claw structure comprises a plurality of claws, the claws can elastically deform and are inserted in the through holes in a one-to-one correspondence manner, the end parts of the claws extend out of the side walls of the nail body, and the claws have radians away from the direction of the conical head along the length direction of the claws. The method has the effect of reducing the occurrence of the condition that the band wire anchor which is driven into the bone of the patient is easy to fall off.

Description

Anchor with wire

Technical Field

The application relates to the technical field of medical instruments, in particular to a band wire anchor.

Background

A suture anchor is a very small implant used to secure a suture in bone. The band wire anchor can be applied to repair of dead point fractures of tendinous regions throughout the body. After the anchor with the wire is driven into the bone, the suture is threaded through the soft tissue by the needle and knotted to fix the soft tissue to the anchor, i.e. the bone surface, thereby realizing the reconnection of the soft tissue and the bone.

Currently, in procedures using a wired anchor, a physician typically drills a bone tunnel into a bone, screws the anchor inward, and externally provides a threaded tooth to enhance the anchoring force between the anchor and the bone. The front end of the anchor with the thread is also provided with a through hole for the suture to pass through and wind.

However, when the suture anchor in the related art is used for performing soft tissue and bone suture operation on a patient, if a doctor pulls the suture, the strength is high, and the anchor is easy to fall off; especially when the screw thread tooth of the anchor is narrower, even the situation of thread damage can appear, finally lead to the anchor to drop.

Disclosure of Invention

In order to improve the problem of easy removal of a threaded anchor driven into a patient's bone, the present application provides a threaded anchor.

The application provides a belted line anchor, adopts following technical scheme:

the anchor nail with the wire comprises a nail body and a conical head, wherein the conical head is integrally formed at one end head of the nail body, a mounting hole penetrating through the nail body and away from one side of the conical head is formed in the center of the nail body along the length direction of the nail body, and a plurality of through holes communicated with the mounting hole are formed in the side wall of the nail body;

the mounting hole is internally provided with a multi-claw structure, the multi-claw structure comprises a plurality of claws, the claws can be elastically deformed and are inserted in the through holes in a one-to-one correspondence manner, the end parts of the claws extend out of the side walls of the nail body, and the claws have radians away from the direction of the conical heads along the length direction of the claws.

By adopting the technical scheme, after the anchor is driven into the bone, the multi-jaw structure is applied with force towards the conical head, so that a plurality of jaws can penetrate into the bone through the through holes to strengthen the anchoring force between the anchor and the bone, and the anchor is not easy to separate from the bone; simultaneously, the claw is arranged to be far away from the radian of the conical head, so that when the anchor is subjected to outward drawing force, the claw can better grab the bone, the stress direction of the claw is more reasonable, the outward drawing force can be resisted more effectively, and the possibility that the anchor is separated from the bone under the action of the drawing force is further reduced.

Optionally, the mounting hole is a polygonal hole, and the through holes are all arranged at the corners of the mounting hole.

Through adopting above-mentioned technical scheme, because the through-hole is offered in the corner, the jack catch corresponds also to set up in the corner, sets up the mounting hole into the polygon hole simultaneously for the jack catch is when the drive of connecting rod moves down, under the restriction of polygon mounting hole side, is difficult for rotating, thereby blocks smoothly into with it in the through-hole on same vertical line.

Optionally, still be provided with the connecting rod in the mounting hole, the connecting rod includes the threaded rod and fixes the block in threaded rod one end, the threaded rod passes many claw structure middle part, and with many claw structure rotates to be connected, the mounting hole diapire has seted up the anchor hole along nail body length direction, the threaded rod can threaded connection to in the anchor hole.

By adopting the technical scheme, the medical staff rotates the connecting rod, so that the connecting rod can be connected into the anchoring hole in a threaded manner, and when the connecting rod moves into the anchoring hole, the multi-claw structure rotationally connected with the connecting rod can be simultaneously driven to move in the direction close to the conical head until the claws extend out from the through holes; through rotating the connection with many claw structures and connecting rod for when being close to the direction knob connecting rod of conical head, many claw structures can not rotate along with the connecting rod, and many claw structures also can be moved towards the direction that is close to the conical head simultaneously.

Optionally, a group of through holes is arranged, and the group of through holes is positioned at 1/2 or 2/3 of the length direction of the nail body.

By adopting the technical scheme, for osteoporosis patients, as the bone density and the bone quality are lower than those of normal bones, the anchoring force between the bones and the anchors is easy to lose efficacy, so two types of anchors are arranged, and the through hole of one type of anchor is positioned at 1/2 of the length of the anchor body and is used for driving into the normal bones; a through hole of a model anchor is positioned at 2/3 of the length of the anchor body and is used for being driven into a patient with osteoporosis, so that the possibility of failure of connection between the anchor driven into the patient with osteoporosis and the bone is reduced.

Optionally, the through holes are provided with a plurality of groups, and the plurality of groups of through holes are respectively positioned at different heights along the length direction of the nail body;

the multi-claw structure is also provided with a plurality of through holes, and the plurality of multi-claw structures can be correspondingly clamped into each group of through holes respectively.

Through adopting above-mentioned technical scheme, all set up the multiunit with through-hole and many claw structures for multiunit many claw structures can pass through the through-hole simultaneously and anchor to in the bone, set up multiunit many claw structures and realize multiple anchor and can further strengthen the anchor power between anchor and the bone, reduce the possibility that the anchor breaks away from the bone.

Optionally, a connecting cylinder is fixed between two adjacent multi-claw structures, and the fixing point of the connecting cylinder and the multi-claw structures is located at the bending section of the claw.

Through adopting above-mentioned technical scheme, if be provided with a plurality of multi-claw structures, the multi-claw structure that can't contact with the lid can't receive from the lid and apply towards the extrusion force of conical head direction on the multi-claw structure, set up the connecting tube between two multi-claw structures for the extrusion force that the lid was applyed to a multi-claw structure can be passed through the connecting tube and give adjacent multi-claw structure, thereby make the jack catch that the card post structure that is located the lid contact contained also can pass the through-hole smoothly and pierce in the bone.

Optionally, an abutment platform is arranged between two adjacent groups of through holes, and two adjacent claw structures are respectively positioned at two sides of the abutment platform, and the abutment platform is fixed with the side wall of the mounting hole.

By adopting the technical scheme, the multi-claw structure which cannot be contacted with the bottom wall of the mounting hole is arranged, the position of the multi-claw structure is kept fixed only by virtue of the limiting effect of the connecting rod on the multi-claw structure, the stability is poor, and the connection between the multi-claw structure and the connecting rod is easy to fail; the butt platform is arranged, so that the butt platform can play a supporting role on the multi-claw structure, and the position of the multi-claw structure is fixed.

Optionally, the side wall of the end part of the claw close to the connecting rod is provided with a latch, and the latch is arranged on a bending section of the claw;

when the cap is in contact with the jaws, the cap rim covers the latch surface.

By adopting the technical scheme, the connecting rod is arranged in the mounting hole, and the multi-claw structure is driven to move in the direction close to the conical head until the multi-claw structure is clamped between the cover cap and the bottom wall of the mounting hole, and the cover cap is used for pressing the bending section of the claw, so that the claw can more easily penetrate through the through hole and penetrate into the bone; set up the latch at the bending section for frictional force between block and the latch increases, makes the block press the direction that the jack catch is close to the conical head that can be better.

Optionally, the end portion of the claw away from the conical head is provided with a saw-tooth structure.

Through adopting above-mentioned technical scheme, keep away from the one end of conical head with the jack catch and set up the cockscomb structure, can increase the area of contact of jack catch and bone to further increase the anchor power between jack catch and the bone.

Optionally, the nail body is provided with a thread, a perforation penetrating through the side wall of the nail body is arranged on the nail body, and the arrangement direction of the perforation is perpendicular to the length axis of the nail body;

the side wall of the nail body is also provided with two sliding grooves communicated with the through holes, and the depth of the two sliding grooves is deeper than the thickness of the thread teeth.

By adopting the technical scheme, when the suture is penetrated in the anchor, one end of the suture can pass through the perforation, and the two ends of the suture are respectively pulled out along the two sliding grooves, so that the connection between the anchor and the suture is realized; the sliding groove deeper than the thickness of the thread teeth is arranged, so that after the anchor nail is nailed into the bone, the suture line can still slide in the sliding groove, and the normal operation is realized.

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

1. according to the anchor, the multi-claw structure and the through holes are arranged, so that the claws can penetrate out of the anchor from the through holes and penetrate into bones, the anchoring force between the anchor and the bones is enhanced, and the possibility of the anchor being separated from the bones is reduced;

2. the sawtooth-shaped structures are arranged at the ends of the clamping jaws, so that after the clamping jaws anchor the bone, the contact area between the clamping jaws and the bone is increased, the friction force between the clamping jaws and the bone is increased, and the anchoring force between the clamping jaws and the bone is further enhanced;

3. this application sets up the anchor of three kinds of models, and the anchor power intensity of each kind of anchor is different, and medical personnel can select the anchor of different anchor intensity according to patient's specific condition, satisfies different treatment demands.

Drawings

FIG. 1 is a schematic view of the overall construction of a belted anchor according to example 1 of the present application;

FIG. 2 is a schematic partial cut-away view of the example 1 stripline anchor of the present application;

FIG. 3 is a schematic view of the structure of the multi-jaw structure of embodiment 1 of the present application;

FIG. 4 is a schematic view of the structure of the connecting rod and multi-jaw structure of embodiment 2 of the present application;

FIG. 5 is a schematic partial cut-away view of a belted line anchor according to example 2 of the present application;

FIG. 6 is a schematic view of the overall construction of the belted anchor of example 5 of the present application;

fig. 7 is a schematic partial cutaway view of the example 5 stripline anchor of the present application.

Reference numerals illustrate: 1. a nail body; 11. a mounting hole; 12. a through hole; 13. an anchor hole; 14. a thread tooth; 15. perforating; 16. a chute; 2. a conical head; 3. a multi-jaw structure; 31. a claw; 311. latch teeth; 32. a center plate; 33. a first multi-jaw structure; 34. a second multi-jaw structure; 4. a connecting rod; 41. capping; 411. a rotary groove; 42. a threaded rod; 5. abutting against the platform; 6. and a connecting cylinder.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

Example 1

Referring to fig. 1, embodiment 1 of the present application provides a threaded anchor, including a nail body 1 and a conical head 2, wherein the conical head 2 is integrally formed at one end of the nail body 1, the nail body is columnar with an axis facing the conical head direction, and a thread tooth 14 is provided outside the nail body 1, so that after the anchor is screwed into a bone, an anchoring force for preventing the anchor from being separated from the bone exists between the anchor and the bone. The nail body 1 is close to the perforation 15 that is used for wearing to establish the suture is offered to the one end lateral wall of conical head 2, perforation 15 both ends pass through nail body 1 lateral wall, and offer the direction perpendicular to nail body 1 length axis, two parallel spouts 16 have been offered to nail body 1 lateral wall simultaneously along nail body 1 length direction, two spouts 16 symmetry set up in nail body 1 axis both sides and all communicate with perforation 15, spout 16 pass through the one end that conical head 2 was kept away from to nail body 1, the depth of seting up of spout 16 is more than the thickness of screw thread 14.

Referring to fig. 1, when threading the suture, one end of the suture is first threaded through the perforation 15, and both ends of the suture are pulled out along the two sliding grooves 16, respectively. When the suture passes through the perforation 15 and is positioned in the chute 16, the anchor is driven into the bone, at this time, the thread 14 on the nail body 1 is connected with the bone anchor, and the depth of the chute 16 is deeper than the thickness of the thread 14, so that the suture can still slide in the chute 16, and the possibility that the suture is connected with the bone anchor together with the thread 14 is reduced.

Referring to fig. 1 and 2, a mounting hole 11 is formed in one end, far away from the conical head 2, of the nail body 1, the mounting hole 11 is formed in the length direction of the nail body 1, the cross section of the mounting hole 11 is polygonal, and the cross section of the mounting hole 11 in embodiment 1 of the present application is regular hexagon. The inside of the mounting hole 11 is provided with a multi-claw structure 3, the multi-claw structure 3 comprises a central disc 32 and a plurality of claws 31, the claws 31 are arranged at intervals on the periphery side of the central disc 32, each multi-claw structure 3 in the embodiment of the application comprises three claws 31 arranged at intervals at equal angles along the periphery side of the central disc 32, and the claws 31 are made of non-absorbable elastic materials.

Referring to fig. 1 and 2, the side wall of the nail body 1 is further provided with a plurality of through holes 12 corresponding to the number and the positions of the claws 31, the connecting line of each through hole 12 corresponding to each claw 31 is parallel to the axis of the nail body 1, in this embodiment, the through holes 12 are preferably three, the through holes 12 are all arranged at the corners of the mounting holes 11, and the through holes 12 are communicated with the mounting holes 11 and penetrate through the side wall of one side of the nail body 1.

Referring to fig. 1 and 2, the multi-jaw structure 3 is fixed on the bottom wall of the mounting hole 11, the jaw 31 is folded on one side of the through hole 12 away from the bit 2 before the anchor is driven into the bone, and the jaw 31 abuts against the side wall of the mounting hole 11. After the medical staff drives the anchor into the bone, the claw 31 is pushed in the direction approaching to the conical head 2, so that the end head of the claw 31 extends out of the through hole 12 and the side wall of the nail body 1 to penetrate into the bone, thereby enhancing the anchoring force between the anchor and the bone and reducing the possibility of the anchor being separated from the bone.

Referring to fig. 2 and 3, the jaw 31 further has an arc in a direction away from the bit 2 along its length direction, while an end of the jaw 31 away from the center plate 32 is provided with a serration structure. When the anchor is driven into the bone, if the anchor is subjected to an external pulling force for separating the anchor from the bone in the moving process, the claw 31 is provided with an arc in the direction away from the conical head 2, so that the claw 31 can better grip the bone, and the effect of the claw 31 against the external pulling force is better due to the arc direction, so that the anchor is difficult to separate from the bone under the action of the pulling force; meanwhile, the sawtooth-shaped structures are arranged at the ends of the clamping claws 31, so that the contact area between the clamping claws 31 and the bone can be increased, the friction force between the clamping claws 31 and the bone is increased, and the anchoring force between the clamping claws 31 and the bone is enhanced.

Embodiment 1 of the present application also provides a delivery device for driving a suture anchor according to embodiment 1 of the present application into bone, comprising a pusher for pushing the pawl 31 to move in a direction approaching the bit 2, the cross-sectional shape of the pusher being the same as the cross-sectional shape of the mounting hole 11, and a pusher sidewall contacting the mounting hole 11 sidewall when the pusher slides along the mounting hole 11.

The implementation principle of the anchor with the wire in the embodiment 1 of the application is as follows: in the preparation stage of the operation, the suture is first inserted into the perforation 15 of the anchor, and both ends of the suture are pulled out along the chute 16. In the operation stage, a doctor drills a bone tunnel on the surface of a bone and screws in the bone with a wire anchor inwards, and after the bone with the wire anchor is anchored into the bone, the pushing head at the end part of the delivery device is pushed into the mounting hole 11 and pushes the clamping jaw 31 in the mounting hole 11, so that the clamping jaw 31 can penetrate through the through hole 12 and extend out of the side wall of the anchor to penetrate into the bone, and the anchoring force of the anchor in the bone is further enhanced.

Example 2

The embodiment of the present application differs from embodiment 1 in that: referring to fig. 1 and 4, the connecting rod 4 is further disposed in the mounting hole 11, 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 formed in the central disc 32, and the diameter of the circular hole is smaller than the outer diameter of the thread tooth 14 on the threaded rod 42, so that the multi-claw structure 3 can be rotationally connected with the threaded rod 42, and is not easy to separate from the connecting rod 4.

Referring to fig. 4 and 5, the bottom wall of the mounting hole 11 is further provided with an anchoring hole 13 along the length direction of the nail body 1, and the depth of the anchoring hole 13 is not less than the length of the threaded rod 42. The doctor can make connecting rod 4 threaded connection to anchor hole 13 through rotating connecting rod 4, and the in-process that threaded rod 42 moved to anchor hole 13, drive multi-claw structure 3 to be close to the direction of anchor hole 13 and remove, until multi-claw structure 3 is pressed from both sides tightly between lid 41 and mounting hole 11 diapire, stop rotating threaded rod 42, a plurality of jack catchs 31 stretch out from through-hole 12 this moment to anchor into the bone.

Referring to fig. 4, the surface of the cap 41 away from the threaded rod 42 is further provided with a rotation slot 411 to facilitate the rotation of the connecting rod 4 by the doctor. The rotary slot 411 can be of a cross type or a straight type.

Referring to fig. 4 and 5, the side wall of the claw 31 near the center plate 32 is further provided with a latch 311, the latch 311 extends to a curved section of the claw 31, and the cap 41 is covered on the latch 311 when the multi-claw structure 3 is clamped between the cap 41 and the bottom wall of the mounting hole 11. The latch 311 is provided at the curved section of the jaw 31, and when the multi-jaw structure 3 is clamped between the cap 41 and the bottom wall of the mounting hole 11, the cap 41 can apply a force to the curved section of the jaw 31 toward the through hole 12, so that the jaw 31 can smoothly protrude from the through hole 12 and be anchored into the bone.

Embodiment 2 of the present application also provides a delivery device for driving the suture anchor of embodiment 2 of the present application into bone, comprising a drill bit for rotating the connecting rod 4 into the anchoring hole 13, the cross-sectional shape and size of the drill bit being the same as the rotary slot 411 formed in the cap 41.

The implementation principle of the anchor with the wire in the embodiment 2 of the application is as follows: after the doctor drives the wired anchor into the bone, the drill bit of the end of the delivery device is clamped into the rotary slot 411 on the surface of the cap 41, and the connecting rod 4 is rotated, so that the connecting rod 4 moves towards the anchoring hole 13, and meanwhile, the multi-claw structure 3 is driven to move towards the anchoring hole 13. When the multi-jaw structure 3 is simultaneously in contact with the cap 41 and the bottom wall of the mounting hole 11, the connecting rod 4 continues to be rotated, at which time the cap 41 applies a pressure to the curved section of the jaw 31 towards the through hole 12, until the multi-jaw structure 3 is clamped between the cap 41 and the bottom wall of the mounting hole 11 to stop the rotation, at which time the jaw 31 has been extended out of the through hole 12 and anchored into the bone.

Example 3

The difference between the embodiment of the present application and the

embodiments

1 and 2 is that: on the basis of

embodiment

1 or 2, it is further defined that the through hole 12 is provided at 1/2 position in the longitudinal direction of the shank 1, and that this type of anchor is used for patients with normal bone.

Example 4

The difference between the embodiment of the present application and the

embodiments

1 and 2 is that: on the basis of example 1 or 2, it is further defined that the through hole 12 is provided at a position of 2/3 of the longitudinal direction of the shank 1, and that this type of anchor is used for osteoporosis patients.

Example 5

The embodiment and embodiment 2 of the present application are different in that: referring to fig. 6 and 7, the through holes 12 are provided in two groups, and the two groups of through holes 12 are located at different heights of the shank 1, respectively. The two multi-claw structures 3 are also arranged, the two multi-claw structures 3 can be correspondingly inserted into the two groups of through holes 12 respectively, and the threaded rod 42 penetrates through the two multi-claw structures 3 and is in rotary connection with the multi-claw structures 3. When the anchor is not driven into the bone, the two multi-jaw structures 3 are retracted within the mounting hole 11, and the jaws 31 are abutted against the side walls of the mounting hole 11. One of the multi-claw structures 3 is located between the two sets of through holes 12 as a first multi-claw structure 33; the other multi-jaw structure 3 is located on the side of the two sets of through holes 12 remote from the bit 2 as a second multi-jaw structure 34. A connecting cylinder 6 is arranged between the two multi-claw structures 3, and two ends of the connecting cylinder 6 are fixedly connected with bending sections of the claws 31 of the two multi-claw structures 3 respectively.

Referring to fig. 6 and 7, an abutment platform 5 between the two through holes 12 is further disposed in the mounting hole 11, the side edge of the abutment platform 5 is fixedly connected with the inner wall of the mounting hole 11, the connecting rod 4 penetrates through the abutment platform 5, and the two multi-claw structures 3 are located on two sides of the abutment platform 5 respectively.

Referring to fig. 6 and 7, when the medical staff moves the threaded rod 42 in the direction approaching the conical head 2, the two multi-claw structures 3 can be synchronously driven to move in the direction approaching the conical 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. The second multi-claw structure 34 is abutted between the cap 41 and the abutting platform 5, and the claws 31 of the second multi-claw structure 34 extend out of the through holes 12 through the extrusion force of the cap 41; at the same time, under the connection of the connecting cylinder 6, the deformation of the second multi-jaw structure 34 can be transmitted to the first multi-jaw structure 33, so that the jaws 31 of the first multi-jaw structure 33 also protrude from the through-holes 12 and penetrate into the bone.

The two multi-claw structures 3 in embodiment 5 of the present application can be simultaneously fixed to the bottom wall of the mounting hole 11, and also can be rotatably connected to the connecting rod 4.

The implementation principle of the anchor with the wire in the embodiment of the application is as follows: for the patient with poor bone quality, a plurality of multi-jaw structures 3 are arranged in the mounting hole 11, so that the plurality of multi-jaw structures 3 can simultaneously penetrate through a plurality of groups of through holes 12 and are anchored into bones, triple anchoring between an anchor and the bones is realized, the first heavy anchoring is the connection between the thread teeth 14 of the side wall of the anchor rod and the bones, the first heavy anchoring is the anchoring between the first multi-jaw structures 33 and the bones, the first heavy anchoring is the anchoring between the second jaws 31 and the bones, and the anchoring force between the anchor and the bones is enhanced through the triple anchoring, so that the anchor is difficult to separate from the bones.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a take line anchor, includes nail body (1) and conical head (2), conical head (2) integrated into one piece in the one end of nail body (1), its characterized in that: the center of the nail body (1) is provided with a mounting hole (11) penetrating through one side of the nail body (1) away from the conical head (2) along the length direction, and the side wall of the nail body (1) is provided with a plurality of through holes (12) communicated with the mounting hole (11);

be provided with many claw structures (3) in mounting hole (11), many claw structures (3) include a plurality of jack catchs (31), a plurality of jack catchs (31) can elastic deformation and one-to-one peg graft in through-hole (12), and the tip stretches out nail body (1) lateral wall, jack catchs (31) have the radian of keeping away from conical head (2) direction along its length direction.

2. A belted anchor according to claim 1, wherein: the mounting holes (11) are polygonal holes, and the through holes (12) are all formed in the corners of the mounting holes (11).

3. A stripline anchor as claimed in claim 2, wherein: still be provided with connecting rod (4) in mounting hole (11), connecting rod (4) include threaded rod (42) and fix block (41) in threaded rod (42) one end, threaded rod (42) are passed multi-claw structure (3) middle part, and with multi-claw structure (3) rotate and be connected, anchor hole (13) have been seted up along nail body (1) length direction to mounting hole (11) diapire, threaded rod (42) can threaded connection to in anchor hole (13).

4. A strip line anchor as claimed in claim 3, wherein: the through holes (12) are arranged in a group, and the group of through holes (12) are positioned at 1/2 or 2/3 of the length direction of the nail body (1).

5. A strip line anchor as claimed in claim 3, wherein: the through holes (12) are provided with a plurality of groups, and the plurality of groups of through holes (12) are respectively positioned at different heights in the length direction of the nail body (1);

the multi-claw structure (3) is also provided with a plurality of the multi-claw structures (3), and the plurality of the multi-claw structures (3) can be correspondingly clamped into each group of through holes (12) respectively.

6. A strip line anchor as in claim 5, wherein: a connecting cylinder (6) is fixed between two adjacent multi-claw structures (3), and the fixed points of the connecting cylinder (6) and the multi-claw structures (3) are positioned at the bending sections of the claws (31).

7. A stripline anchor as claimed in claim 6, wherein: an abutting platform (5) is arranged between two adjacent groups of through holes (12), the structures of two adjacent clamping claws (31) are respectively positioned at two sides of the abutting platform (5), and the abutting platform (5) is fixed with the side wall of the mounting hole (11).

8. A strip line anchor as claimed in any one of claims 3 to 7, wherein: the clamping jaw (31) is provided with a clamping tooth (311) on the side wall of the end part close to the connecting rod (4), and the clamping tooth (311) is arranged on a bending section of the clamping jaw (31);

when the cap (41) is in contact with the claw (31), the edge of the cap (41) covers the surface of the clamping tooth (311).

9. A strip line anchor as claimed in any one of claims 1 to 8, wherein: the end part of the claw (31) far away from the conical head (2) is provided with a saw-tooth structure.

10. A belted anchor according to claim 1, wherein: the screw body (1) is externally provided with a thread (14), the screw body (1) is provided with a through hole (15) penetrating through the side wall of the screw body (1), and the opening direction of the through hole (15) is perpendicular to the length axis of the screw body (1);

the side wall of the nail body (1) is also provided with two sliding grooves (16) communicated with the through holes (15), and the depth of the two sliding grooves (16) is deeper than the thickness of the thread teeth (14).