CN214104500U

CN214104500U - Anchor with wire

Info

Publication number: CN214104500U
Application number: CN202022856514.0U
Authority: CN
Inventors: 曹颖佳; 张小农; 张绍翔
Original assignee: Suzhou Origin Medical Technology Co ltd
Current assignee: Suzhou Origin Medical Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-09-03
Anticipated expiration: 2030-12-01

Abstract

The utility model provides a suture anchor, which comprises an anchor body and a thread part arranged on the surface of the anchor body; the anchor body comprises an anchor tip, an anchor rod and an anchor tail end; the interior of the anchor rod is of a hollow structure, the hollow structure comprises a hollow cylinder at the front end and a rotating groove at the tail end, and concave threads are arranged in the hollow cylinder; the hollow cylinder is also connected with a nail head, and the head of the nail head is spherical; the front end of the nail head is provided with a through hole along the width direction, and two symmetrical wire arranging grooves are formed in the two ends of the through hole along the length direction; the periphery of the nail head is provided with a convex thread, and the convex thread is connected with the hollow cylindrical concave thread; the structural design avoids the damage of the thread structure caused by the opening on the side surface of the anchor bolt body, and greatly enhances the binding force between the anchor bolt and the bone; meanwhile, the rear end of the anchor is of a dense double-thread design structure, so that the anchor body can be firmly fixed on cortical bone, the pull-out force is greatly enhanced, and the postoperative fixing effect is better.

Description

Anchor with wire

Technical Field

The utility model relates to the technical field of medical equipment, a improve a strip line anchor nail of postoperative anchor nail and bone combining power specifically says so.

Background

Suture anchors are widely used as a large category in sports medicine. The suture anchor is used for repairing the tearing or ripping of soft tissue from a bone structure and is suitable for connecting and fixing the bone and the soft tissue.

At present, the suture anchors clinically used mainly comprise two types, namely a caudal loop and a caudal loop; the suture carried by the anchor with the tail ring suture is positioned at the tail of the nail, and the tail of the nail can not be completely implanted into bone in clinical use, so that friction between soft tissue and the tail of the nail is caused, and complications such as soft tissue infection and the like are caused. The anchor without the tail ring belt line is positioned in the nail body, and the full thread structure can ensure that the anchor is completely implanted into bone, thereby greatly enhancing the pull-out force while preventing complications.

However, the structure of the tail-free annular anchor which is clinically used is mostly provided with a through hole along the width direction, and a wire arrangement groove is arranged along the length direction, so that the structure is convenient for threading, but the integrity of the screw thread structure of the nail body is greatly damaged, and the binding force of the post-operation anchor and the bone is greatly weakened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the traditional suture anchor post-operation fixing effect is not good or can cause complications such as soft tissue infection.

In order to solve the above problem, the utility model discloses the technical scheme who takes is:

the utility model provides a strip line anchor nail, including anchor nail body and the screw thread portion of setting on anchor nail body surface, the anchor nail body includes anchor nail point end in proper order, anchor nail pole and anchor nail tail end, just the inside hollow structure that is equipped with of anchor nail pole, hollow structure includes the hollow cylinder of front end and the rotating groove of tail end, be provided with concave screw in the hollow cylinder.

Wherein, the anchor body is made of metal or macromolecular material.

The outer surface of the anchor body is of a single-thread structure or a combined structure of single threads and double threads; the combined structure is that the surface of the anchor tip is a single thread part, and the surface of the anchor tail end is a double thread part;

the nail head is inserted into the hollow cylinder and is in threaded connection with the hollow cylinder, and the front end of the nail head is spherical.

Wherein, the nail head is made of metal or high polymer material.

The front end of the nail head is provided with a through hole along the width direction, two symmetrical wire arranging grooves are formed in the two ends of the through hole along the length direction, the wire arranging grooves penetrate through the tail end of the nail head, and the wire arranging grooves can contain at least two suture lines; the outer surface of the nail head is provided with a convex thread, and the pitch of the convex thread is the same as that of the concave thread of the hollow cylinder.

The anchor body length is not less than 15mm, and the anchor body diameter is not less than 4.5 mm.

The length of the hollow cylinder is 1/3-1/4 times of the length of the anchor body, the length of the rotating groove is 1/3-1/4 times of the length of the anchor body, and the length of the nail head is 1/3-1/4 times of the length of the anchor body.

Wherein the length of the nail head is not more than that of the hollow cylinder.

The diameter of the hollow cylinder is smaller than that of the inscribed circle of the rotating groove.

Wherein the diameter of the circumcircle of the rotating groove is 1/2-2/3 times of the diameter of the anchor body.

Wherein, the rotating groove is quadrilateral or hexagonal.

Compared with the prior art, the embodiment of the utility model provides an advantage lies in:

the utility model provides a pair of take line anchor nail, the inside hollow structure that is of anchor nail body, through the line is walked to the pin fin, and the line of walking of line is located the inside pin fin of anchor nail body completely, is guaranteeing under the prerequisite that penetrates smoothly and wear out of threading structure, has also guaranteed the intensity of anchor nail body structure.

To sum up, the utility model provides a pair of electrified line anchor nail can guarantee anchor nail body helicitic texture's integrality, when reducing soft tissue infection risk, has strengthened the cohesion of anchor nail and bone greatly, guarantees the security and the validity of postoperative.

Drawings

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

Fig. 2 is a cross-sectional view of the anchor of the present invention.

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

Fig. 4 is a schematic structural view of the nail head of the present invention.

Fig. 5 is a first cross-sectional view of the present invention.

Fig. 6 is a first cross-sectional view of the present invention.

In the figure: the self-locking type self-locking anchor comprises an anchor body 1, a thread part 2, an anchor tip 3, an anchor rod 4, an anchor tail end 5, a hollow cylinder 6, a nail head 7, a threading hole 8, a wire arranging groove 1, a wire arranging groove 2, a rotating groove 11, a concave thread 12 and a convex thread 13.

Detailed Description

In the prior art, a suture anchor or a tail ring cannot be completely implanted; or the tail ring is not implanted, but the thread structure is damaged, so that the fixing effect after the operation is greatly weakened.

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 a suture anchor for the prior problem, which comprises an anchor body 1, wherein the length of the anchor body 1 is not less than 15mm, the diameter is not less than 4.5mm, and the outer surface of the anchor body 1 is provided with a thread part 2; the anchor body 1 sequentially comprises an anchor tip end 3, an anchor rod 4 and an anchor tail end 5, a hollow structure is arranged in the anchor rod 4, the hollow structure comprises a hollow cylinder 6 at the front end and a rotating groove 11 at the tail end, and the diameter of the excircle of the rotating groove 11 is 1/2-2/3 times of the diameter of the anchor body 1; the diameter of the hollow cylinder 6 is smaller than the diameter of the inscribed circle of the rotating groove 11; the length of the hollow cylinder 6 is 1/3-1/4 times of the length of the anchor body 1, and the length of the rotary groove 11 is 1/3-1/4 times of the length of the anchor body 1; a concave thread 12 is arranged in the hollow cylinder 6; the nail head 7 is inserted into the hollow cylinder 6 and connected with the concave thread 12 of the hollow cylinder 6.

The thread part 2 is of a single-thread and double-thread combined structure; the single-thread and double-thread combined structure is characterized in that the surface of the tip end of the anchor is a single thread part, and the surface of the tail end of the anchor is a double thread part; the length of the double threads is 1/3-1/4 times of the length of the anchor body 1.

The length of the nail head 7 is 1/3-1/4 times of the length of the anchor body 1, and the length of the nail head 7 is not more than the length of the hollow cylinder 6; the front end of the nail head 7 is provided with a circular through hole 8 along the width direction, and the through hole 8 can penetrate at least two ultra-high molecular weight polyethylene sutures with the diameter of 0.5-0.599 mm; two symmetrical

winding displacement grooves

9 and 10 are formed in the two ends of the through hole 8 along the length direction, the

winding displacement grooves

9 and 10 penetrate through the tail end of the nail head 7, and at least two ultrahigh molecular weight polyethylene sutures with the diameter of 0.5-0.599mm can be simultaneously embedded into the

winding displacement grooves

9 and 10; the outer surface of the nail head 7 is provided with a convex thread 13, the thread pitch of the convex thread 13 is the same as that of the concave thread 12 of the hollow cylinder 6, and the thread pitch is not more than 1.0 mm.

The rotating groove can be quadrilateral or hexagonal.

The anchor body 1 and the head 7 may be made of metal or polymer material.

When the anchor nail is assembled, a suture is penetrated from one end of the through hole 8 and penetrates out from the other end in the first step; secondly, placing the suture in a wire arranging groove 9 and a wire arranging groove 10; thirdly, screwing the nail head 7 into the hollow cylinder 6 through the pushing device.

Take line anchor nail adopts the structure that line was walked to inside pin fin, has guaranteed helicitic texture's integrality, and anchor nail body surface single double thread integrated configuration has strengthened the cohesion of anchor nail and bone simultaneously, guarantees the fixed effect of postoperative.

Claims

1. The suture anchor is characterized by comprising an anchor body and a threaded part arranged on the surface of the anchor body; the anchor body sequentially comprises an anchor pointed end, an anchor rod and an anchor tail end; a hollow structure is arranged in the anchor rod and comprises a hollow cylinder at the front end and a rotating groove at the tail end, and concave threads are arranged in the hollow cylinder;

the nail head is characterized by further comprising a nail head, wherein a through hole is formed in the front end of the nail head in the width direction, two symmetrical wire arranging grooves are formed in the two ends of the through hole in the length direction, and the wire arranging grooves penetrate through the tail end of the nail head; the pin head is connected with the hollow cylindrical concave thread to form the anchor with the thread.

2. The suture anchor of claim 1, wherein the anchor body and the tack head are made of a metal or polymeric material.

3. The suture anchor of claim 1, wherein the external thread of the anchor body is a single thread configuration or a combination of single and double threads; the combined structure is that the surface of the anchor tip is a single thread part, and the surface of the anchor tail end is a double thread part; the double thread length is 1/3-1/4 times the anchor body length.

4. The suture anchor of claim 1 wherein the head surface is provided with a male thread having the same pitch as the hollow cylindrical female thread.

5. The suture anchor of claim 1, wherein the head length is no greater than the hollow cylinder length.

6. The suture anchor of claim 1, wherein the anchor body length is no less than 15mm and the anchor body diameter is no less than 4.5 mm.

7. The suture anchor of claim 1 wherein the hollow cylinder length is 1/3-1/4 times the anchor body length and the swirl slot length is 1/3-1/4 times the anchor body length.

8. The suture anchor of claim 5 wherein the stud length is 1/3-1/4 times the anchor body length.

9. The suture anchor of claim 7, wherein the hollow cylinder diameter is smaller than the diameter of the inscribed circle of the swirling slot.

10. The suture anchor of claim 9 wherein the swirl slot circumscribed circle diameter is 1/2-2/3 times the anchor body diameter.