CN213821552U - Bone anchor tail wire locking device - Google Patents

Abstract

The utility model relates to a bone anchor tail wire locking device, which comprises a locking main body and a locking piece; a locking groove is formed in one side of the locking main body, a clamping groove is formed in the bottom wall of the locking groove, and a threading opening communicated with the locking groove is formed in the locking main body; the locking piece is movably inserted into the locking groove, the bottom of the locking piece is provided with a clamping hook, the clamping hook can be matched in the clamping groove, so that the locking piece is locked in the locking groove, and the bottom wall of the locking piece is tightly attached to the bottom wall of the locking groove; the utility model discloses a locking device can make the tail wire dispersion fixed in the locking main part, need not to tie a knot, and the area of contact of locking main part and soft tissue is big, can avoid the local pressurized of soft tissue too high, reduces the tail wire to the cutting force of soft tissue, whole device simple structure, convenient operation is swift.

Description

Bone anchor tail wire locking device

Technical Field

The utility model relates to a bone anchor tail wire locking device belongs to medical instrument technical field.

Background

The Suture Anchor is a consumable commonly used in the field of sports medicine, and the Suture Anchor (Suture Anchor) is suitable for any operation requiring the re-fixation of soft tissue and bone, such as shoulder joint operation (rotator cuff repair, acromioclavicular separation, Bankart repair, SLAP laceration repair), wrist/hand joint operation (navicular ligament reconstruction, UCL/LCL repair or reconstruction, interphalangeal joint reconstruction), hip and knee joint operation (extraarticular capsule repair or ligament reconstruction), etc. When the operator performs the operation of re-fixing the soft tissue and the bone, the anchor part is firstly embedded into the bone tissue, then the tail wire is penetrated through the soft tissue to be fixed by using the wire threading technology, and is knotted to be attached and fixed on the surface of the bone. However, as a result of the accumulation of long-term surgical experience, there are several problems associated with the use of suture anchors by surgeons for soft tissue and bone reconstruction: 1. knotting under the mirror is too complicated (the hip, knee and shoulder arthroscope is taken as a work), sometimes the tail lines are twisted with each other when the lines are crossed, the operation time is greatly prolonged by untying the tail lines, and the knotting effect is influenced by not untying the tail lines. 2. The position when knotting is uncontrollable, often can use the line of one side to tie a knot as the axle (often with the slip knot fixed under the mirror), make the knot after tying off to one side like this, cause the local high pressure of soft tissue. 3. Because the tail line is thinner, stronger cutting force can be caused to soft tissues in a tightened state, and the soft tissues are easy to be damaged.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model aims at providing an easy operation, convenient and fast's bone anchor tail locking device can avoid knoing, and locking device is big with the area of contact of soft tissue for the stress point dispersion of tail avoids appearing the too high problem of soft tissue local pressurized, reduces the cutting force of tail to the soft tissue.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a bone anchor tail wire locking device comprises a locking main body and a locking piece; a locking groove is formed in one side of the locking main body, a clamping groove is formed in the bottom wall of the locking groove, and a threading opening communicated with the locking groove is formed in the other side of the locking main body; the locking piece is movably inserted into the locking groove, a clamping hook is arranged at the bottom of the locking piece and can be matched with the locking groove, so that the locking piece is locked in the locking groove, and the bottom wall of the locking piece is tightly attached to the bottom wall of the locking groove.

In some embodiments, the hook comprises a hook arm arranged at the bottom of the locking piece and a hook body convexly arranged at the bottom of the outer side wall of the hook arm, and an elastic piece is arranged on the inner side wall of the locking piece; the clamping groove comprises a guide groove vertically dug on the bottom wall of the locking groove and a hook groove dug on the inner wall of the guide groove and matched with the hook body; when the locking device is in an initial position, the elastic piece is in contact with the side wall of the locking main body, and the clamping hooks are distributed above the notches of the clamping grooves in a staggered mode forwards.

In some embodiments, the elastic member is an arc-shaped wall disposed on an inner side wall of the locking piece, and a deformable space is formed between the arc-shaped wall and the inner side wall of the locking piece.

In some embodiments, two wire pressing blocks are arranged on the bottom wall of the locking piece and on two sides of the hook, two grooves matched with the two wire pressing blocks are arranged on the bottom wall of the locking groove, two wire guiding grooves are formed in the side wall, between the bottom walls of the wire threading opening locking groove, of the locking main body, and the two wire guiding grooves are correspondingly communicated with the two grooves.

In some embodiments, two side walls of the locking groove are respectively provided with a sliding groove, two side walls of the locking piece are respectively provided with a sliding block, and the sliding block is movably arranged in the sliding groove.

In some embodiments, the threading opening is a rectangular opening, or two circular openings spaced apart from each other.

In some embodiments, the locking body is a disk structure with a blunt edge on the locking body.

In some embodiments, a handle is provided on an outer side wall of the locking tab.

The utility model discloses owing to take above technical scheme, it has following advantage: the utility model provides a bone anchor tail line locking device, including locking main part and locking plate, set up the threading mouth and the locking groove of mutual intercommunication in the locking main part, the bone anchor tail line passes threading mouth and locking groove, the draw-in groove that utilizes the locking groove bottom and the lock hook lock of locking plate bottom are died and are cooperated, lock the locking plate lock in locking inslot, the bone anchor tail line then is compressed tightly between the diapire of locking plate and the diapire of locking groove, thereby realize the lock of bone anchor tail line and die, whole device simple structure, convenient operation is swift, need not to tie a knot, the tail line disperses fixedly in the locking main part, make the stress point dispersion of tail line, and simultaneously, the area of contact of locking main part and soft tissue is big, can avoid the local high pressure of soft tissue, reduce the cutting force of tail line to the soft tissue.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view taken along line A-A of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is a schematic structural view of the locking body of the present invention;

fig. 5 is a front view of the locking body of the present invention;

FIG. 6 is a cross-sectional view taken along line B-B of the locking body of the present invention;

fig. 7 is a schematic structural view of the locking plate of the present invention;

fig. 8 is a schematic top view of the locking plate of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and examples. It is to be understood, however, that the drawings are provided solely for the purposes of promoting an understanding of the invention and that they are not to be construed as limiting the invention.

It should be noted that all the directional indicators (such as the near end, the far end, the front end, the rear end, etc.) in the present embodiment are only used to explain the relative positional relationship, the motion situation, etc. of the components in the general operation posture, that is, the side close to the operator is referred to as the near end or the rear end, and the side far away from the operator is referred to as the far end or the front end; if the operating posture changes, the directional indication changes accordingly.

As shown in fig. 1 and 2, the present invention provides a bone anchor tail locking device, which comprises a locking body 100 and a locking piece 200; a locking groove 101 is formed in one side of the locking main body 100, a locking groove 102 is formed in the bottom wall of the locking groove 101, and a threading opening 103 which is communicated with the locking groove 101 is formed in the other side of the locking main body 100; the locking piece 200 is movably inserted into the locking groove 102, the bottom of the locking piece 200 is provided with a hook 201, the hook 201 can be matched with the locking groove 102, so that the locking piece 200 is locked in the locking groove 101, and the bottom wall of the locking piece 200 is tightly attached to the bottom wall of the locking groove 101.

The utility model discloses when locking the bone anchor tail wire, pass through threading mouth 103 and locking groove 101 on the locking main part 100 with two tail wires of bone anchor nail, then, plant locking plate 200 in locking groove 101 to make trip 201 on locking plate 200 cooperate in the draw-in groove 102 in locking groove 101, at this moment, locking plate 200 locks and dies in locking groove 101, the diapire of locking plate 200 is hugged closely with the diapire of locking groove 101, two tail wires of bone anchor nail are compressed tightly between the diapire of locking plate 200 and the diapire of locking groove 101, thereby realize the lock of bone anchor tail wire; use the utility model discloses a locking device carries out bone anchor tail line locking, need not to tie a knot, and the tail line dispersion is fixed in locking main part 100 for the stress point dispersion of tail line, the area of contact of locking main part 100 and soft tissue is big simultaneously, can avoid the local pressurized of soft tissue too high, reduces the cutting force of tail line to the soft tissue.

In the above embodiment, as shown in fig. 6 to 8, preferably, the hook 201 includes a hook arm 2011 disposed at the bottom of the locking plate 200, and a hook body 2012 protruding from the bottom of the outer sidewall of the hook arm 2011, and an elastic member is disposed on the inner sidewall of the locking plate 200; the locking groove 102 comprises a guide groove 1021 vertically dug on the bottom wall of the locking groove 101, and a hook groove 1022 dug on the inner wall of the guide groove 1021 and matched with the hook body 2012; in the initial position, the elastic member contacts with the side wall of the locking body 100, and the hooks 201 are arranged above the notches of the slots 102 in a staggered manner. When the bone anchor is used, medical staff upwards pulls the locking piece 200, the bone anchor tail wire penetrates through the threading opening 103 and the locking groove 101, then the locking piece 200 is pushed to move downwards in the locking groove 101, when the hook 201 is close to the notch of the locking groove 102, the locking piece 200 is pushed to continue to move downwards, pressure is applied to the locking piece 200, at the moment, the elastic piece is pressed to deform, the locking piece 200 drives the hook 201 to move backwards together, the hook 201 smoothly enters the locking groove 102, when the locking piece 200 cannot continue to move downwards, the locking piece 200 is released, the elastic piece resets, the hook body 2012 on the hook 201 is matched in the hook groove 1022, the locking piece 200 is locked in the locking groove 101, and the bone anchor tail wire is locked between the locking piece 200 and the locking groove 101; when the tail wire needs to be loosened, pressure is applied to the locking piece 200, so that the hook 201 on the locking piece 200 is withdrawn from the clamping groove 102, at the moment, the bottom wall of the locking piece 200 is far away from the bottom wall of the locking groove 101, and the tail wire is loosened.

In the above embodiment, preferably, as shown in fig. 3 and 8, the elastic member may be an arc-shaped wall 300 disposed on an inner side wall of the locking tab 200, and a deformable space 301 is formed between the arc-shaped wall 300 and the inner side wall of the locking tab 200.

In the above embodiment, preferably, as shown in fig. 4, 5, and 7, two wire pressing blocks 202 are disposed on the bottom wall of the locking piece 200 and on two sides of the hook 201, two grooves 104 matched with the two wire pressing blocks 202 are disposed on the bottom wall of the locking groove 101, two lead grooves 105 are disposed on the side wall of the locking body 100 between the threading opening 103 and the bottom wall of the locking groove 101, the two lead grooves 105 are correspondingly communicated with the two grooves 104, when in use, two tails of the bone anchor are led into the grooves 104 through the two lead grooves 105, and the two wire pressing blocks 202 on the bottom wall of the locking piece 200 are pressed in the two grooves 104, so as to lock the tails.

In the above embodiment, as shown in fig. 4, 6 and 7, preferably, the sliding grooves 106 are respectively opened on both side walls of the locking groove 101, the sliding blocks 203 are respectively arranged on both side walls of the locking piece 200, and the sliding blocks 203 are movably arranged in the sliding grooves 106.

In the above embodiment, the threading opening 103 may be a rectangular opening, or two circular openings spaced apart from each other; it will be appreciated that the threading opening 103 may take other shapes to facilitate threading of the tail thread therethrough.

In the above embodiment, it is preferable that the locking body 100 has a disk structure, and the edge of the locking body 100 is blunt.

In the above embodiment, it is preferable that a handle 400 is provided on an outer side wall of the locking piece 200, as shown in fig. 7 and 8, for convenient operation.

The present invention has been described only with reference to the above embodiments, and the structure, arrangement position and connection of the components may be changed. On the basis of the technical scheme of the utility model, the all sides according to the utility model discloses the principle is all not excluded to the improvement that individual part goes on or the transform of equivalence the utility model discloses a protection scope is outside.

Claims (8)

1. The utility model provides a bone anchor tail wire locking device which characterized in that: comprises a locking main body and a locking sheet; a locking groove is formed in one side of the locking main body, a clamping groove is formed in the bottom wall of the locking groove, and a threading opening communicated with the locking groove is formed in the other side of the locking main body; the locking piece is movably inserted into the locking groove, a clamping hook is arranged at the bottom of the locking piece and can be matched with the locking groove, so that the locking piece is locked in the locking groove, and the bottom wall of the locking piece is tightly attached to the bottom wall of the locking groove.

2. The bone anchor tail locking device of claim 1, wherein: the clamping hook comprises a hook arm arranged at the bottom of the locking piece and a hook body which is convexly arranged at the bottom of the outer side wall of the hook arm, and an elastic piece is arranged on the inner side wall of the locking piece; the clamping groove comprises a guide groove vertically dug on the bottom wall of the locking groove and a hook groove dug on the inner wall of the guide groove and matched with the hook body; when the locking device is in an initial position, the elastic piece is in contact with the side wall of the locking main body, and the clamping hooks are distributed above the notches of the clamping grooves in a staggered mode forwards.

3. The bone anchor tail locking device of claim 2, wherein: the elastic piece is an arc-shaped wall arranged on the inner side wall of the locking piece, and a deformable space is formed between the arc-shaped wall and the inner side wall of the locking piece.

4. The bone anchor tail locking device of claim 1, wherein: the bottom wall of the locking piece is located two wire pressing blocks are arranged on two sides of the clamping hook, two grooves matched with the wire pressing blocks are arranged on the bottom wall of the locking groove, the locking main body is located two wire leading grooves are formed in the side wall between the bottom walls of the wire opening locking groove, and the two wire leading grooves are communicated with the two grooves in a corresponding mode.

5. The bone anchor tail locking device of claim 1, wherein: the locking groove is characterized in that sliding grooves are formed in two side walls of the locking groove respectively, sliding blocks are arranged on two side walls of the locking piece respectively, and the sliding blocks are movably arranged in the sliding grooves.

6. The bone anchor tail locking device of claim 1, wherein: the threading mouth is a rectangle opening, or two circular openings of interval distribution.

7. The bone anchor tail locking device of claim 1, wherein: the locking main body is of a disc structure, and the edge of the locking main body is subjected to blunting treatment.

8. The bone anchor tail locking device of claim 1, wherein: and a handle is arranged on the outer side wall of the locking piece.

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