CN116650040A - Full suture anchor nail - Google Patents

Abstract

The application discloses a full-suture anchor, which relates to the technical field of medical appliances and comprises a nail body and a plurality of claw-shaped structures integrally formed with the nail body, wherein one end of each claw-shaped structure far away from the nail body is provided with a hard part; a plurality of sutures are arranged in the nail body, and two ends of each suture extend out from one end of one claw-shaped structure, which is close to the hard part. The application has the effect of improving the fixing strength of the full suture anchor.

Description

Full suture anchor nail

Technical Field

The application relates to the technical field of medical instruments, in particular to a full-suture anchor.

Background

The approach of orthopedic surgeons to sports medical procedures has been changed by the use of corded anchors designed to assist the surgeon in achieving soft tissue to bone integration, and when soft tissue is not present on the bone in sufficient amounts to allow direct soft tissue to soft tissue repair, prior open surgery can now be performed arthroscopic due to the presence of the corded anchor. The wire anchor is made of titanium alloy, polyether-ether-ketone, absorbable polymer and the like, wherein the titanium alloy anchor is used more, but the titanium alloy wire anchor is easy to have adverse reactions such as fracture at an implantation position, difficulty in pulling out the anchor, infection around the implantation position of the anchor and the like.

The full-suture anchor is a novel implanted anchor, and compared with the traditional anchor with a wire, the full-suture anchor has smaller implanted bone canal and smaller bone removal amount, and is more comfortable for patients; in addition, the full suture anchor has high reworkability and is relatively easy even if some revision operations are required after implantation; the full suture anchor has high replaceability, and even if the full suture anchor needs to be replaced, the full suture anchor does not cause great influence on a patient; finally, the full suture anchor has good biocompatibility, and is more beneficial to the rehabilitation of patients.

However, because the full-suture anchor is woven by the woven threads, the whole body is soft, and the condition that the fixation is not firm enough easily exists during the fixation, so that the full-suture anchor falls off from the bone canal in the use process.

Disclosure of Invention

In order to improve the fixing strength of the full-suture anchor, the application provides the full-suture anchor.

The application provides a full suture anchor, which adopts the following technical scheme:

the full suture anchor comprises a nail body and a plurality of claw-shaped structures integrally formed with the nail body, wherein one end of each claw-shaped structure, which is far away from the nail body, is provided with a hard part;

a plurality of sutures are arranged in the nail body, and two ends of each suture extend out from one end, close to the hard part, of one claw-shaped structure.

By adopting the technical scheme, as porous cancellous bone exists in the bone and is softer, the end head of the claw-shaped structure of the full-suture anchor is provided with the hard part, so that the claw-shaped structure can be clamped into the side wall of the bone canal deeper, the friction force between the full-suture anchor and the bone canal is enhanced, and the full-suture anchor is not easy to separate from the bone canal;

further, when the full-suture anchor is in the bone canal, medical staff pulls the suture, so that the full-suture anchor can be contracted into a bulk, the volume of the full-suture anchor is increased, the full-suture anchor is deeper clamped into the side wall of the bone canal, and the fixing strength of the full-suture anchor is enhanced.

Optionally, the claw-shaped structure is provided with even number, and the equal division sets up at the nail body opposite both ends, be provided with the insertion point that is used for inserting full suture anchor in the bone tunnel in the middle of the nail body.

By adopting the technical scheme, the claw-shaped structures are equally arranged at the two ends of the nail body, so that the balance and stability of the full-suture anchor can be enhanced; when setting up the insertion point and can making the doctor use the inserter to insert full suture anchor in the bone canal, the point position that the inserter acted on full suture anchor is fixed, can make things convenient for medical personnel to perform the operation on the one hand, on the other hand according to the structural style of full suture anchor, rationally set up the insertion point, can make the more stable insertion of full suture anchor in the bone canal.

Optionally, a plurality of the claw structures are arranged centrally and symmetrically along the insertion point.

Through adopting above-mentioned technical scheme, will insert the point setting in the centre of the nail body for the inserter is when inserting full suture anchor, and a plurality of claw-shaped structures can be folded along the insertion point, because claw-shaped structure central symmetry at both ends sets up, makes the full suture anchor focus after folding more stable, inserts and follow-up operation in-process, and full suture anchor is difficult for turning on one's side or breaks away from the inserter.

Optionally, the insertion point is disposed at a claw-like structure of the shank proximate one end thereof.

Through adopting above-mentioned technical scheme, when the inserter acts on the insertion point to insert full suture anchor to the bone way, the full suture anchor is folded with the insertion point as the center, because the claw-like structure that the insertion point is close to one end more makes the folding back of full suture anchor, the hard portion at nail body both ends stagger each other, thereby make the aperture of bone way only need can through the hard portion of a plurality of claw-like structures of nail body one end, thereby reduced the aperture of seting up the bone way.

Optionally, two adjacent claw structures positioned at one side of the nail body are parallel or are arranged at an included angle.

By adopting the technical scheme, when two adjacent claw-shaped structures positioned at one side of the nail body are parallel, the nail body and the claw-shaped structures are easier to weave; when a plurality of claw-shaped structures at one end of the nail body are arranged in an included angle mode, when the full-suture anchor enters the bone canal, the claw-shaped structures are anchored on the side wall of the bone canal in a more dispersed mode, and therefore the fixing effect of the full-suture anchor is better.

Alternatively, the length of all claw-like structures is the same.

By adopting the technical scheme, the claw-shaped structures at the two ends of the nail body are identical in length, and when the insertion points are arranged in the center of the nail body, the full-suture anchor can be symmetrically folded by taking the insertion points as the centers when being inserted into a bone canal, so that the stress of the full-suture anchor in the insertion process is more balanced and stable, and side turning or instability is not easy to occur; when the claw-shaped structures at the two ends of the nail body are the same in length, and the insertion points are arranged on the nail body and close to the claw-shaped structures at one end, when the full-suture anchor is inserted, after the full-suture anchor is folded, the hard parts of the claw-shaped structures at the two ends of the nail body are staggered in the height direction, so that the aperture of a bone canal required by the insertion of the full-suture anchor is smaller, the opening aperture of the bone canal can be reduced, and the damage to human tissues is reduced.

Optionally, all claw-shaped structures at any end of the nail body have the same length, and claw-shaped structures at two ends of the nail body have different lengths.

Through adopting above-mentioned technical scheme, the claw form structural length at nail body both ends is different for when full suture anchor is inserted in the bone way, the hard portion at nail body both ends staggers each other, thereby the bone way only need be through the whole claw form structure of nail body one end and the whole hard portion of nail body other end, compare in the bone way is passed through simultaneously to all hard portions on the nail body, and the bone way aperture that needs is littleer, less to the damage of human bone.

Optionally, the lengths of the plurality of claw structures are different.

By adopting the technical scheme, when the full-suture anchor is folded and inserted into the bone canal, the hard parts on the claw-shaped structures are staggered, so that when the full-suture anchor is inserted, only one hard part and the rest claw-shaped structures are needed to be inserted into the bone canal, the required aperture of the bone canal is smaller, and the anchoring strength of the full-suture anchor and the bone canal is not influenced; furthermore, the repairability of the full-suture anchor is improved, and after the full-suture anchor has a problem, as the aperture of the opened bone canal is small, another bone canal can be opened on the operation surface of the bone, and a new full-suture anchor can be driven in again, so that the repairation of the full-suture anchor can be completed.

Optionally, the nail body and the claw-shaped structure are both woven by yarns.

Through adopting above-mentioned technical scheme for the nail body is woven with claw form structure an organic whole and is formed, and whole full suture anchor is flexible structure, can fold the shrink in order to realize the function of using of full suture anchor.

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

1. the full-suture anchor is provided with the plurality of claw-shaped structures, and the hard parts are arranged at the end parts of the claw-shaped structures, so that the anchoring strength between the full-suture anchor and the bone canal can be enhanced, and the full-suture anchor is not easy to separate from the bone canal;

2. the insertion points are arranged at different positions of the nail body, or the lengths of the claw-shaped structures are reasonably adjusted, so that when the full-suture anchor enters the bone canal, the required bone canal aperture is smaller, and the damage to human tissues when the anchor is installed and anchored can be reduced;

3. the suture anchor comprises a plurality of claw-shaped structures, wherein the suture is embedded into the full-suture anchor, and when the full-suture anchor is mounted to a bone canal, two ends of the suture are pulled to drive the full-suture anchor to shrink into a group, so that the full-suture anchor is clamped into the bone canal deeper.

Drawings

FIG. 1 is a schematic view of the construction of a full suture anchor of example 1 of the present application;

FIG. 2 is a schematic plan view of the claw-like structures of embodiment 2 of the present application parallel to each other or having an included angle;

FIG. 3 is a schematic illustration of the full suture anchor installation process of the present application;

FIG. 4 is a schematic plan view of the claw-like structures of embodiment 3 of the present application parallel to each other or having an included angle;

FIG. 5 is a schematic plan view of the claw-like structures of embodiment 4 of the present application parallel to each other or having an included angle;

fig. 6 is a schematic plan view of the claw-like structures of embodiment 5 of the present application when they are parallel to each other or have an included angle.

Reference numerals illustrate: 1. a nail body; 11. an insertion point; 2. a claw-like structure; 21. a hard portion; 3. and (5) stitching.

Detailed Description

The application is described in further detail below with reference to fig. 1-6.

Example 1:

referring to fig. 1, a full suture anchor disclosed in embodiment 1 of the present application includes a shank 1, the shank 1 may be a sheet structure having a certain thickness, two ends of the shank 1 are provided with a plurality of claw structures 2, the shank 1 and the claw structures 2 are both woven by yarns, and specifically, in embodiment 1 of the present application, the claw structures 2 and the shank 1 may be woven by ultra-high molecular weight polyethylene yarns together.

Referring to fig. 1, in the embodiment of the present application, the number of claw structures 2 is even, preferably four or six, and the plurality of claw structures 2 are equally disposed at opposite ends of the nail body 1. Because the full suture anchor has the advantage of requiring smaller bone implantation than other conventional anchors, such as titanium alloy anchors, the provision of four claw-like structures 2 can meet the anchoring requirement on the one hand, and in addition, larger bone implantation is not required, so that the provision of four claw-like structures 2 is the preferred embodiment of the present application. However, in other embodiments, other numbers of claw structures 2 can be provided according to actual requirements.

Referring to fig. 1 and 2, the application is illustrated by taking four claw-shaped structures 2 as an example, two claw-shaped structures 2 are respectively arranged on two opposite sides of the nail body 1, and the claw-shaped structures 2 are in a strip shape. Two claw-shaped structures 2 arranged at the same end of the nail body 1 are parallel to each other; or be the contained angle setting, when claw form structure 2 is the contained angle setting, two claw form structures 2 set up towards the direction that deviates from nail body 1 mutually.

Referring to fig. 1, the claw structure 2 includes a hard portion 21 at an end remote from the nail body 1, and in the embodiment of the present application, the end 5±2mm of the claw structure 2 is hardened by high temperature curing to form the hard portion 21. In other embodiments, the length of the stiff portion 21 can be set according to the overall volume of the full suture anchor; in other embodiments, the stiff portion 21 can also be a stiff member secured to the end of the claw structure 2. The provision of the stiff portion 21 can enhance the anchoring force of the full-suture anchor to the side wall of the bone tunnel, so that the fixation strength of the full-suture anchor is enhanced.

Referring to fig. 1 and 2, a plurality of sutures 3 are further provided in the nail body 1, and when the nail body 1 and the claw-like structure 2 are woven, the sutures 3 are woven in the nail body 1 and the claw-like structure 2, and both ends of the sutures 3 are respectively penetrated from the hard end parts 21 of the claw-like structure 2 at both ends of the nail body 1. When the application is provided with four claw-shaped structures 2, two sutures 3 are arranged, and the two sutures 3 can be staggered, so that two ends of one suture 3 respectively extend out of the two claw-shaped structures 2 which are not opposite and are at different sides of the nail body 1. Alternatively, two ends of one suture 3 can be extended from two opposite claw structures 2 on two sides of the nail body 1, where the two sutures 3 are arranged in parallel.

Referring to fig. 1 and 2, an insertion point 11 is provided on a nail body 1, and when a full-suture anchor is implanted into a bone, a bone canal for accommodating the full-suture anchor is first drilled on the bone, an inserter matched with the full-suture anchor is used, the end of the inserter acts on the insertion point 11, the full-suture anchor is folded and gathered, and then the full-suture anchor is pushed into the bone canal from the insertion point 11.

The implementation principle of the full-suture anchor provided by the embodiment of the application is as follows: the bones of the human body comprise cortical bone and cancellous bone, the cancellous bone is positioned in the bone, the cortical bone is wrapped outside the cancellous bone, the cortical bone is hard and can bear larger stress, and the cancellous bone is of a porous structure and is softer in texture.

Referring to fig. 2 and 3, a bone canal is drilled into a bone, the side wall of the bone canal is cancellous bone, when a full-suture anchor is installed, the inserter is aligned with the insertion point 11, and when the full-suture anchor is pushed into the bone canal, the nail body 1 is folded and contracted because the full-suture anchor is woven by fine soft yarns, and after the full-suture anchor is pushed into the bone canal, the hard part 21 of each claw-shaped structure 2 is clamped in the side wall of the bone canal.

At this time, both ends of the suture 3 are located outside the bone canal, and both ends of the suture 3 are pulled simultaneously, the nail body 1 is continuously contracted into a round shape under the pulling of the suture 3, and in the process of pulling the suture 3, the hard part 21 is deeper and is clamped into the bone canal, so that the friction force between the full-suture anchor and the bone canal is larger, the fixing strength between the full-suture anchor and the bone canal is improved, and the full-suture anchor is more difficult to separate from the bone canal.

Meanwhile, when the two claw-shaped structures 2 positioned at the same end of the nail body 1 are arranged in parallel, the production manufacturer of the full-suture anchor is more convenient to weave the full-suture anchor, and the shape of the full-suture anchor can be controlled more accurately; when the two claw-shaped structures 2 positioned at the same end of the nail body 1 are arranged at an included angle, after the full-suture anchor is pushed into the bone canal, the claw-shaped structures 2 are more dispersedly fixed on the side wall of the bone canal, and the suture 3 is pulled, so that the fixing strength between the full-suture anchor and the bone canal can be further enhanced when the full-suture anchor is clamped into the bone canal.

In addition, the two ends of the suture 3 are penetrated out from the beginning of the tail end hard part 21 of the claw-shaped structure 2, so that when a doctor pulls the suture 3, other positions of the nail body 1 and the claw-shaped structure 2 except the hard part 21 are contracted and gathered upwards, the hard part 21 can be driven to be in a horizontal state at the moment, the volumes of the nail body 1 and the rest parts of the claw-shaped structure 2 are increased after being contracted, and at the moment, the force penetrating into the bone canal can be applied to the hard part 21, so that the hard part 21 penetrates into the bone canal deeper, and the anchoring strength is enhanced.

Example 2

With reference to fig. 2, embodiment 2 further defines embodiment 1 in that the insertion point 11 is disposed at a midpoint of both ends of the nail body 1, and the claw structures 2 of both ends of the nail body 1 are symmetrically disposed along the insertion point 11, and all the claw structures 2 have the same length.

The inserter acts on the insertion point 11 and when pushing the full suture anchor into the bone tunnel, the four jaws fold together around the insertion point 11 and into the bone tunnel. Because the full-suture anchor is woven by yarns, the texture is soft, and compared with the traditional anchor, the full-suture anchor occupies smaller volume when entering into a bone canal, and the aperture of the bone canal to be drilled is smaller. Meanwhile, as the insertion point 11 is arranged at the middle point of the nail body 1, the lengths of the two ends of the full-suture anchor are the same after the full-suture anchor is folded, and the full-suture anchor is in a balanced state at the moment, so that the full-suture anchor is not easy to roll over or incline in the process of inserting and later pulling the suture 3 to fold the full-suture anchor, and the operation difficulty of doctors can be reduced.

Example 3

Referring to fig. 4, embodiment 3 is different from embodiment 2 in that the insertion point 11 is provided at the midpoint of both ends of the nail body 1, and the lengths of the claw structures 2 at the same end of the nail body 1 are the same, but the lengths of the claw structures 2 at both ends of the nail body 1 are different.

Because the lengths of the claw-shaped structures 2 at the two ends of the nail body 1 are different, when the inserter acts on the insertion point 11 and pushes the full suture anchor into the bone canal, the hard parts 21 at the two ends of the nail body 1 are staggered to enter the bone canal, so that the aperture width of the bone canal only needs to be satisfied, the installation of the full suture anchor can be completed through all the hard parts 21 at one end of the nail body 1, and the aperture of the bone canal can be further reduced.

Example 4

Referring to fig. 5, embodiment 3 is different from embodiment 2 in that an insertion point 11 is provided near the nail body 1 near one end of the claw structure 2, and the claw structures 2 at both ends of the nail body 1 are the same in length.

In the embodiment 4 of the application, similar to the principle of the embodiment 3, when the full-suture anchor is inserted into the bone canal, the hard parts 21 at the two ends of the anchor body 1 are staggered, so that the opening aperture of the bone canal can be reduced, and the damage to the bone canal is reduced. In addition, the aperture that the bone way was seted up is less, and when whole claw-like structure 2 got into the bone way to under the pulling effect of suture 3, when full suture anchor contracted into the bulk, the depth that full suture anchor blocked into the bone way was deeper, and the fixation effect of full suture anchor is better.

Example 5

Referring to fig. 6, embodiment 3 is different from embodiment 2 in that the lengths of the respective claw structures 2 of the full suture anchor are different, and the lengths of the respective claw structures 2 are changed in a gradient, preferably the difference in length of the respective claw structures 2 is the length of the stiff portion 21. Specifically, when the full-suture anchor is inserted into the bone canal by using the inserter, the full-suture anchor is folded and gathered by taking the insertion point 11 as the center, and the plurality of claw-shaped structures 2 are also overlapped and gathered, and the lengths of the claw-shaped structures 2 are arranged in a gradient manner, so that the hard parts 21 at the ends of the claw-shaped structures 2 are staggered with each other, thereby reducing the aperture of the bone canal occupied by the full-suture anchor.

When the full-suture anchors are inserted into the bone tunnels, the hard parts 21 of the claw structures 2 are staggered, so that the aperture of the bone tunnels in the embodiment 5 of the present application can be smaller than those in the embodiments 3 and 4, and the aperture in the embodiment 5 only needs to satisfy the condition of passing through the nail body 1, the claw structures 2 and the hard part 21.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (9)

1. A full suture anchor, characterized by: the nail comprises a nail body (1) and a plurality of claw-shaped structures (2) which are integrally formed with the nail body (1), wherein one end, far away from the nail body (1), of each claw-shaped structure (2) is provided with a hard part (21);

a plurality of sutures (3) are arranged in the nail body (1), and two ends of the sutures (3) respectively extend out from one end, close to the hard part (21), of one claw-shaped structure (2).

2. A full-suture anchor according to claim 1, wherein: the claw-shaped structures (2) are provided with an even number and are equally arranged at two opposite ends of the nail body (1), and insertion points (11) for inserting the full suture anchor into the bone canal are arranged in the middle of the nail body (1).

3. A full-suture anchor according to claim 2, wherein: a plurality of claw structures (2) are arranged symmetrically along the center of the insertion point (11).

4. A full-suture anchor according to claim 2, wherein: the insertion point (11) is arranged at the claw-shaped structure (2) of the nail body (1) close to one end of the nail body.

5. A full suture anchor according to claim 3 or 4, wherein: two adjacent claw-shaped structures (2) positioned at one side of the nail body (1) are parallel or are arranged at an included angle.

6. A full-suture anchor as claimed in claim 5, wherein: the lengths of all claw structures (2) are the same.

7. A full-suture anchor as claimed in claim 5, wherein: all claw-shaped structures (2) at any end of the nail body (1) have the same length, and the claw-shaped structures (2) at the two ends of the nail body (1) have different lengths.

8. A full-suture anchor as claimed in claim 5, wherein: the lengths of the claw structures (2) are different.

9. A full-suture anchor according to claim 1, wherein: the nail body (1) and the claw-shaped structure (2) are both formed by knitting yarns.