CN214259398U - Easy-to-screw-in density thread anchor with wire - Google Patents

Abstract

The utility model provides a structure of easy screw in density screw thread strip line anchor nail, include: the front end of the anchor body is of a conical structure; a threaded structure located on an exterior of the anchor body; the threading structure is positioned at the bottom of the square groove of the anchor body; the thread structure includes: the front end thread is of a conical high-low thread structure, so that the torsion force when a bone is screwed in can be reduced, and meanwhile, the binding force with the bone can be enhanced; the rear end thread is a small-pitch thread compared with the front end thread, can be fixed on a cortical bone on a bone surface layer and forms stronger binding force; the threading structure avoids thread damage caused by slotting from the side edge of the thread, and enhances the binding force with bone.

Description

Easy-to-screw-in density thread anchor with wire

Technical Field

The utility model relates to a motion medical science field, concretely relates to orthopedics soft tissue fixation's apparatus.

Background

The anchor with the thread is clinically suitable for the repair operation of the torn soft tissues of shoulder joints, knee joints, hip joints and other parts, and during the operation, a surgeon embeds the anchor into bone, and the thread penetrates through the soft tissues to be fixed again, thereby achieving the purpose of healing tendon and bone.

In the prior art, a suture anchor has a structure that two sections of dense and dense threads are arranged on an anchor body, and meanwhile, a threading structure is arranged on an anchor main body, for example, a suture anchor structure in chinese patent document CN201810761111.2, the dense threads at the rear end in the structure can form a strong binding force with bone, but the sparse threads at the front end are flat threads, so that the torsion force when screwing in the bone is too large, which may cause damage to human bones, and the threading grooves at the sides thereof destroy the threads, thereby reducing the binding force with the bone.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that will solve lies in prior art's take line density screw anchor nail structure and is implanting or twist the too big phenomenon of torsion when the sclerotin easily, and then injures sclerotin problem.

In order to solve the technical problem, the utility model provides an easy screw in density screw thread ribbon line anchor nail, it includes the anchor nail body, sets up at the outside helicitic texture of anchor nail and sets up the threading structure in anchor nail body square groove bottom.

The front end of the anchor bolt body is of a conical structure.

The thread structure includes a front end thread and a rear end thread.

The front end threads are of a conical high-low thread structure, and the rear end threads are small-pitch threads.

The tail of the anchor bolt body is provided with a square groove.

The bottom of the square groove is provided with a square column body.

Furthermore, two through holes are formed in the square column body.

Further, the threading structure is a through hole arranged on the square column body.

Compared with the prior art, the technical scheme of the utility model, have following advantage:

(1) the utility model provides an easy screw in density screw thread strip line anchor nail, it includes: the front end of the anchor body is of a conical structure; a threaded formation external to the suture anchor body; the threading structure is positioned at the bottom of the square groove of the anchor body with the thread; the thread structure includes: the front end thread is of a conical high-low thread structure; a rear end thread that is a small pitch thread compared to the front end thread; by arranging the conical structure with the front end thread, when the bone is screwed in, the resistance in screwing can be reduced, the operation of a doctor is facilitated, and the bone injury of a patient is reduced; the binding force can be enhanced after the bone is implanted by arranging the high-low thread structure of the front end thread; the small-pitch structure with the rear-end threads can be fixed on cortical bone on the surface layer of the bone, so that the binding force between the cortical bone and the bone is further enhanced, and the possibility of secondary damage is greatly reduced.

(2) The front end screw thread of traditional density screw thread anchor nail is not the toper screw thread, the utility model provides a take line anchor nail front end screw thread is the toper screw thread and set up the structure that high screw thread and low screw thread interval were arranged, and such structure can satisfy simultaneously that the twist torsion is little and anchor and the big advantage of sclerotin cohesion.

(3) Traditional thread structure of density screw thread anchor nail generally sets up at the side, has destroyed the integrality of screw thread, the utility model provides a take line anchor nail thread structure sets up in the square groove bottom, has guaranteed the integrality of all screwed, has improved the cohesion of anchor nail with sclerotin.

(4) The utility model provides a take line anchor nail, the design of the high low thread of the toper of its front end screw thread makes the twist more smooth and easy to increased the resistance to plucking intensity of anchor nail, set up threading structure in the square groove simultaneously, kept the integrality of helicitic texture, consequently above-mentioned take line anchor nail uses more smoothly, stronger with the cohesion of sclerotin, provides the guarantee for the operation can be smooth going on.

Drawings

For a clearer explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings of the embodiments will be briefly introduced below, and the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of the structure of the present invention.

Fig. 2 is a sectional view taken along the direction a-a of the present invention.

Fig. 3 is a left side view of the structure of the present invention.

In the figure: 1. the anchor comprises an anchor body, 11, a square groove, 12, a square column body, 13, a threading structure, 2, a thread structure, 21, a front end thread, 22 and a rear end thread.

Detailed Description

In the prior art, when the density thread with the line anchor is screwed in, the torsion is overlarge, and the bone is damaged during the operation; and the lateral threading structure destroys the integrity of the thread, and greatly weakens the fixing effect after the operation.

In order to clearly and completely describe the technical scheme and solve the technical problem of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.

The utility model provides an easy-screwing density thread anchor with thread aiming at the prior problem, which comprises an anchor body 1, wherein the front end of the anchor body is of a conical structure, the taper is 18 degrees to 25 degrees, the total length is not less than 15.0mm, and a thread structure 2 is arranged outside the anchor body; the thread structure comprises a front end thread 21 and a rear end thread 22, and the front end thread is of a tapered high-low thread structure; the rear end threads are small-pitch threads compared with the front end threads; the tail of the anchor body is provided with a square groove 11, the bottom of the square groove is provided with a square column 12, and a threading structure 13 is arranged on the square column.

The thread structure 2 is a combined structure of a front end thread 21 and a rear end thread 22; the front end threads are single-end threads, the rear end threads are double-end threads, and the length of the front end threads is 3-4 times that of the rear end threads.

The front end screw thread 21 is of a conical structure, so that the torque during screwing in the bone can be reduced, the high and low screw threads are uniformly arranged at intervals, and the binding force between the screwed screw threads and the bone can be enhanced.

The thread pitch of the rear end thread 22 is 1/2 of the front end thread, so that the bone can form stronger binding force with cortical bone.

The depth of the square groove 11 does not exceed the length of the rear end thread 22.

The square column 12 is arranged in the middle of the bottom of the square groove, and the height of the square column does not exceed 1/4 of the depth of the square groove.

The threading structure 13 is two circular threading holes which are positioned at the trisection of the square column body, the hole diameter is 0.4-0.5 mm, and when the anchor is assembled, a suture can pass through the two suture lines through the threading structure.

The utility model discloses an easy screw in density screw thread strip line anchor nail, front end screw thread adopt the toper structure, reduced the moment of torsion when screwing in, reduced the damage to the sclerotin, and the high low thread structure of front end screw thread can strengthen the cohesion of anchor nail and sclerotin; in addition, the wiring structure in the square groove ensures the integrity of the thread structure, greatly enhances the binding force of the ground nail and the bone, and ensures the fixing effect after operation.

Claims (7)

1. An easily screwed density thread anchor with a thread is characterized by comprising an anchor body, wherein the front end of the anchor body is of a conical structure; the outside of anchor body is equipped with helicitic texture, helicitic texture includes front end screw thread and rear end screw thread, the front end screw thread is toper height helicitic texture, the pitch of rear end screw thread is 1/2 of front end screw thread, anchor body afterbody is equipped with square groove, the square groove bottom is equipped with square column body, be equipped with threading structure on the square column body.

2. The suture anchor of claim 1 wherein the anchor body leading end is tapered and has a taper of from 18 ° to 25 °; the thread structure comprises a front end thread and a rear end thread, the front end thread is of a conical structure, the threads are arranged at intervals, and the rear end thread is evenly spaced.

3. The suture anchor of claim 2, wherein the leading thread is a single start thread and the trailing thread is a double start thread.

4. The suture anchor of claim 1, 2 or 3 wherein the anchor body is provided with a square slot.

5. The suture anchor of claim 4 wherein a square post is provided intermediate the bottoms of the square grooves.

6. The suture anchor of claim 5 wherein the square post has two through holes.

7. The suture anchor of claim 6, wherein the threading structure is a through hole disposed on the square post.

Images