CN215937515U - Suture anchor assembly with auxiliary positioning function - Google Patents

Abstract

The utility model relates to a suture anchor component with an auxiliary positioning function, which comprises an anchor body and a fastening piece, wherein the surface of the anchor body is provided with a thread structure, an inner cavity is axially arranged in the anchor body, the fastening piece comprises an extension part and an insertion part which are sequentially connected, the insertion part is matched and connected with the inner cavity, two sides of the upper part of the insertion part are symmetrically provided with accommodating grooves, supporting blocks which are rotatably connected with the accommodating grooves are arranged in the accommodating grooves, the inner wall of the anchor body is correspondingly provided with limiting grooves which are clamped with one part of the supporting blocks, the upper part of the anchor body is vertically provided with a plurality of notches at equal intervals along the circumferential direction of the upper part of the anchor body, and the upper part of the anchor body is divided into a plurality of elastic parts by the plurality of notches. When the fastener is subjected to the pulling-out acting force, the insertion part is subjected to displacement change along the axial direction of the insertion part in the inner cavity, at the moment, the supporting block rotates in the accommodating groove relative to the inner wall of the anchor body and pushes the elastic part outwards, so that the upper part of the anchor body expands outwards, the anchor body is in closer contact with bones, and the pulling-out resistance is strong.

Description

Suture anchor assembly with auxiliary positioning function

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a suture anchor component with an auxiliary positioning function.

Background

The anchor is used for any place needing to reconnect soft tissue and bone, and the anchor is firstly fixed on the bone through the thread of the anchor, then the anchor suture passes through the soft tissue through the suture needle, and the soft tissue is fixed on the anchor by knotting, so that the fixation of the soft tissue and the bone is realized.

The existing anchor with the wire is implanted or screwed into a bone through a thread structure and a stress structure and a force application structure, however, the thread structure is generally a full thread structure, the pulling-out resistance of the anchor is low, and the pulling-out risk is large along with the movement of a human body and the elasticity of tissues.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a suture anchor assembly with an auxiliary positioning function to solve the above-mentioned problems of the background art.

The utility model provides a suture anchor component with an auxiliary positioning function, which comprises an anchor body and a fastening piece, wherein the surface of the anchor body is provided with a thread structure, an inner cavity is axially arranged in the anchor body, the fastening piece comprises an extension part and an insertion part which are sequentially connected, the insertion part is matched and connected with the inner cavity, accommodating grooves are symmetrically arranged on two sides of the upper part of the insertion part, supporting blocks which are rotatably connected with the accommodating grooves are arranged in the accommodating grooves, limiting grooves which are clamped with one part of the supporting blocks are correspondingly arranged on the inner wall of the anchor body, a plurality of notches are vertically arranged on the upper part of the anchor body at equal intervals along the circumferential direction of the anchor body, and the upper part of the anchor body is divided into a plurality of elastic parts by the notches.

Preferably, the rotation point of the support block with the insertion portion is provided at a position closer to the inner side than the bottom of the support block.

In any of the above schemes, preferably, the inner wall of the anchor bolt body is further provided with an introduction groove connected with the limit groove.

In any of the above embodiments, preferably, an inclined surface is provided at an outer corner of the top of the supporting block, and the inclined surface is parallel to the inner wall of the introduction groove.

In any of the above schemes, preferably, the outer wall of the insertion portion is provided with a threading hole, the insertion portion is internally and axially and symmetrically provided with a first wire outlet hole and a second wire outlet hole which penetrate through the extension portion, and the threading hole is respectively communicated with the first wire outlet hole and the second wire outlet hole.

In any one of the above aspects, preferably, the thread structure includes a first thread portion, a second thread portion and a third thread portion connected in sequence, the first thread portion includes a plurality of first high threads arranged at equal intervals, the second thread portion includes a plurality of second high threads and low threads distributed at equal intervals, the taper of the first high threads is the same as that of the second high threads, and the taper of the third thread portion tapers to a tip.

In any of the above schemes, preferably, a positioning groove is arranged on the outer wall of the anchor body at the third thread portion, and an included angle is formed between a center line of the positioning groove and a central axis of the anchor body.

Compared with the prior art, the utility model has the advantages and beneficial effects that:

1. the suture anchor component adopts a structural form that the anchor body is combined with the fastener, when the fastener is subjected to the pulling-out acting force, the insertion part is subjected to displacement change along the axial direction of the insertion part in the inner cavity, at the moment, the supporting block rotates in the accommodating groove relative to the inner wall of the anchor body and pushes the elastic part outwards, so that the upper part of the anchor body expands outwards, the contact between the anchor body and the bone is tighter, and the pulling-out resistance is strong.

2. The suture passes through the fastener and is worn out, compares with trompil on the anchor body, has increased the self structural strength of anchor body. Simultaneously, unilateral trompil structure is on the fastener in order to supply the threading, reduces trompil quantity, has increased the structural strength of fastener self.

3. The locating slot is arranged at the third thread part on the outer wall of the anchor body, so that an operator does not need to pull out the locating needle before inserting the anchor assembly with the thread into the locating hole, the anchor can be accurately located along the locating needle and fixed in the locating hole which is punched in advance, and the problem that soft tissue rebounds and contracts or bleeding in the operation is caused due to the fact that the locating needle is removed firstly when the anchor is inserted into the locating hole in the prior art, and then the anchor is not easy to align to the locating hole which is punched in advance is solved.

The present invention will be further described with reference to the drawings, wherein the following description refers to a suture anchor assembly with an auxiliary positioning function.

Drawings

FIG. 1 is a schematic structural view of a suture anchor assembly having an auxiliary positioning function in accordance with the present invention;

FIG. 2 is a schematic view of the internal configuration of the suture anchor assembly having the secondary positioning function of the present invention;

FIG. 3 is a schematic structural view of the fastener in a released state;

FIG. 4 is a schematic view of the fastener in an inserted state;

FIG. 5 is a schematic view of a fastener threading configuration;

wherein: 1. an anchor body; 2. a thread structure; 21. a first high thread; 22. a second high thread; 23. low thread; 24. a third threaded portion; 3. positioning a groove; 4. a notch; 5. a fastener; 51. an extension portion; 52. an insertion portion; 53. accommodating grooves; 54. a support block; 55. threading holes; 56. a first wire outlet hole; 57. a second wire outlet hole; 6. and (4) sewing.

Detailed Description

As shown in fig. 1 and 2, the utility model provides a suture anchor assembly with an auxiliary positioning function, which comprises an anchor body and a fastening piece 5, wherein the surface of the anchor body is provided with a thread structure 2, an inner cavity is axially arranged in the anchor body, the fastening piece 5 comprises an extension part 51 and an insertion part 52 which are sequentially connected, the insertion part 52 is matched and connected with the inner cavity, accommodating grooves 53 are symmetrically arranged on two sides of the upper part of the insertion part 52, supporting blocks 54 which are rotatably connected with the inner wall of the anchor body through pivots are arranged in the accommodating grooves 53, limiting grooves which are clamped with a part of the supporting blocks 54 are correspondingly arranged on the inner wall of the anchor body, a plurality of notches 4 are vertically arranged on the upper part of the anchor body at equal intervals along the circumferential direction of the upper part of the anchor body, and the plurality of notches 4 divide the upper part of the anchor body into a plurality of elastic parts.

The cross section of the insertion portion 52 may be square or hexagonal, and the cross section of the anchor body cavity is square or hexagonal matched with the insertion portion 52.

In this embodiment, the anchor assembly with a thread is formed by combining the anchor body and the fastener 5, when the fastener 5 is subjected to the pulling-out acting force, the insertion portion 52 is displaced and changed along the axial direction thereof in the inner cavity, and at this time, the supporting block 54 rotates in the accommodating groove 53 relative to the inner wall of the anchor body and pushes the elastic portion outwards, so that the upper portion of the anchor body expands outwards, and the anchor body is in closer contact with the bone, and the pulling-out resistance is strong.

Further, the rotation point of the support block 54 with the insertion portion 52 is provided at the bottom of the support block 54 at the inner side. The eccentric location of the pivot point on the support block 54 allows the support block 54 to be horizontal under its own weight (as shown in fig. 3) prior to installation of the fastener 5 with the anchor body.

As shown in fig. 4, before the fastener 5 is installed on the anchor body, the two supporting blocks 54 are manually placed into the receiving slots 53 respectively, and are manually fixed to prevent the supporting blocks 54 from rotating outwards, and at this time, the outer walls of the supporting blocks 54 extend out of the receiving slots 53. When the fastener 5 is installed with the anchor body, the inserting portion 52 of the fastener 5 slides in along the inner cavity, at this time, because the side wall of the supporting block 54 is more than the side wall of the inserting portion 52, when sliding in downwards, the inserting portion 52 can push the elastic portion outwards, so that the upper portion of the anchor body slightly expands outwards, and as the inserting portion 52 gradually slides in the inner cavity, the supporting block 54 is guided into the limiting groove under the action of self gravity, and the limiting groove fixes the supporting block 54, so that the supporting block 54 forms an included angle with the horizontal line.

Furthermore, the inner wall of the anchor nail body is also provided with a leading-in groove connected with the limiting groove. The corner of the top of the supporting block 54 near the outer side is set as an inclined plane, and the inclined plane is parallel to the inner wall of the leading-in groove.

In the structure, the arrangement of the corner structures of the guide groove and the supporting block 54 facilitates the guide of the supporting block 54 into the limiting groove and the installation between the fastener 5 and the anchor body.

Furthermore, as shown in fig. 5, a threading hole 55 is formed in an outer wall of the insertion portion 52, a first wire outlet hole 56 and a second wire outlet hole 57 penetrating through the extension portion 51 are axially and symmetrically formed in the insertion portion 52, and the threading hole 55 is respectively communicated with the first wire outlet hole 56 and the second wire outlet hole 57.

During threading, one end of the suture 6 is pulled in from the threading hole 55 by using a threading tool and pulled out through the first thread outlet hole 56, and then, the other end of the suture 6 is pulled in from the threading hole 55 by using the threading tool and pulled out through the second threading hole 55.

In this structure, the suture 6 passes through the fastener 5, and compared with the hole on the anchor body, the self structural strength of the anchor body is increased. Simultaneously, fastener 5 is superior unilateral open cell structure in order to supply the threading, reduces trompil quantity, has increased fastener 5 self structural strength.

Further, the screw structure 2 includes a first screw portion, a second screw portion, and a third screw portion 24 connected in series. The first thread part comprises a plurality of first high threads 21 which are arranged at equal intervals, the second thread part comprises a plurality of second high threads 22 and low threads 23 which are distributed at equal intervals, and the taper of the first high threads 21 is the same as that of the second high threads 22. First screw thread portion adopts the helicitic texture 2 of equal tapering, makes the anchor body outwards expand under the effect of supporting shoe 54, and first screw thread portion can be inseparabler with the bone contact, and it is effectual to strengthen fixed bone. The second screw thread portion adopts the structure that the taper of high-low screw thread 23 distributes in a staggered manner, when the bone is twisted, the twisting torque force can be reduced, the anti-pulling effect can be increased, the operation of a doctor is facilitated, the pain of a patient is reduced, the affiliated anchor with the thread is not easy to loosen, and the secondary injury of the patient is avoided. The thread taper of the third threaded portion 24 tapers to a pointed end to facilitate threading of the anchor assembly into bone.

Furthermore, the outer wall of the anchor body is provided with a positioning groove 3 at the third thread part 24, and the central line of the positioning groove 3 forms an included angle with the central axis of the anchor body.

In this structure, the setting of constant head tank 3 makes operating personnel need not extract the pilot pin before inserting the suture anchor subassembly into the locating hole, and the anchor can be accurately fixed a position, fix along the pilot pin in the locating hole that has beaten in advance, has avoided among the prior art anchor to remove the pilot pin and lead to soft tissue resilience shrink or intraoperative hemorrhage because of needs earlier before inserting the locating hole, and then leads to the difficult problem of aiming at the locating hole of seting up in advance of leading to the anchor.

In the actual operation process, firstly, an operator pre-opens a positioning hole on the bone of a patient, and inserts a positioning needle into the positioning hole to indicate the specific position where the anchor assembly is inserted, the anchor assembly is required to be connected with an anchor implantation tool when in use, the operator aligns a guide groove of the anchor assembly with the positioning needle, and operates the anchor implantation tool to enable the anchor assembly to move towards the direction of the positioning needle until the positioning needle penetrates into the guide groove, the anchor assembly enters the pre-opened positioning hole along the insertion direction of the positioning needle, after the position of the anchor assembly is determined, the positioning needle can be pulled out from the guide groove, and finally, the anchor assembly is fixed in the positioning hole.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims (7)

1. A suture anchor assembly having an auxiliary positioning effect, comprising: including anchor body, fastener, the surface of anchor body is equipped with helicitic texture, the internal axial of anchor is equipped with the inner chamber, the fastener is including the extension and the insertion part that connect gradually, the insertion part is connected with the inner chamber cooperation, the upper portion bilateral symmetry of insertion part is equipped with the holding tank, be equipped with the supporting shoe rather than rotating the connection in the holding tank, correspond on the inner wall of anchor body and be equipped with the spacing groove with the partly block of supporting shoe, the upper portion of anchor body is vertical along its circumferencial direction equidistance and is equipped with a plurality of breachs, and is a plurality of the breach makes a plurality of elastic parts are separated into on anchor body upper portion.

2. The suture anchor assembly with assisted positioning of claim 1, wherein: the rotating point of the supporting block and the inserting part is arranged at the position, close to the inner side, of the bottom of the supporting block.

3. The suture anchor assembly with assisted positioning of claim 2, wherein: and the inner wall of the anchor nail body is also provided with a lead-in groove connected with the limiting groove.

4. The suture anchor assembly with assisted positioning of claim 3, wherein: and the corner of the top of the supporting block close to the outer side is provided with an inclined surface, and the inclined surface is parallel to the inner wall of the leading-in groove.

5. The suture anchor assembly with assisted positioning of claim 1, wherein: the outer wall of the insertion part is provided with a threading hole, a first wire outlet hole and a second wire outlet hole which penetrate through the extension part are axially and symmetrically arranged in the insertion part, and the threading hole is communicated with the first wire outlet hole and the second wire outlet hole respectively.

6. The suture anchor assembly with assisted positioning of claim 1, wherein: the thread structure comprises a first thread part, a second thread part and a third thread part which are connected in sequence, the first thread part comprises a plurality of first high threads which are arranged at equal intervals, the second thread part comprises a plurality of second high threads and low threads which are distributed at equal intervals, the taper of the first high threads is the same as that of the second high threads, and the taper of the third thread part is gradually reduced to a tip end.

7. The suture anchor assembly with assisted positioning of claim 6, wherein: and a positioning groove is arranged on the outer wall of the anchor body and positioned at the third thread part, and an included angle is formed between the central line of the positioning groove and the central axis of the anchor body.

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