CN209695272U - tendon fixation device - Google Patents

Abstract

The utility model relates to technical field of medical instrument more particularly to a kind of tendon fixation devices.Tendon fixation device includes the first connector, the second connector and the first connected nail；The first connecting hole is offered on first connector, offers the second connecting hole on second connector；First connected nail is inserted in first connecting hole, the tendon stump that can be placed through between first connector and second connector, and is pierced by from second connecting hole.The purpose of this utility model is to provide a kind of tendon fixation devices, to alleviate the tendon fixation device existing in the prior art technical problem poor for the fixation validity of tendon stump and bone bed.

Description

tendon fixation device

technical field

The utility model relates to the technical field of medical appliances, in particular to a tendon fixation device.

Background technique

Tendons are tough, inplastic bands of tissue that connect muscle to bone. The repair of tendon injury and rupture is a problem that often needs to be solved in the field of sports medicine. The usual solution is to implant anchors with high-strength wires at the bone junction, and use the anchors to fix the high-strength wires on the bone bed. The tendon stump was sutured and tied with a high-strength thread, so that the tendon stump was fixed on the bone bed, so that the healing between the tendon and the bone occurred.

However, tendon fibers are mostly in a longitudinal structure, and the tendons are sutured and bundled with high-strength threads. Since the conduction direction of the suture stress of tendon fibers and high-strength threads is the same, when the suture stress is too large during activities, it is easy to cause the tendon to tear off again and cause damage to the tendon. The fixation of the tendon fails, which is not conducive to the healing of the tendon and bone bed.

Therefore, the present application provides a new tendon fixation device for the above problems.

Utility model content

The purpose of the utility model is to provide a tendon fixation device to alleviate the technical problem that the tendon fixation device in the prior art is less effective in fixing the tendon stump and the bone bed.

Based on the above purpose, the utility model provides a tendon fixation device, comprising a first connecting piece, a second connecting piece and a first connecting nail;

A first connecting hole is opened on the first connecting piece, and a second connecting hole is opened on the second connecting piece;

The first connecting nail is inserted into the first connecting hole, can pass through the tendon stump between the first connecting part and the second connecting part, and pass through the second connecting hole .

In the above technical solution, further, the utility model has a plurality of first connection holes, and the plurality of first connection holes are evenly spaced on the first connector;

There are a plurality of second connection holes, and the plurality of second connection holes are evenly spaced on the second connector;

The first connecting hole corresponds to the second connecting hole.

In any of the above technical solutions, further, the first connecting part of the utility model is provided with a groove on the side close to the second connecting part; the second connecting part is provided on the side close to the first connecting part There are barbs, and the barbs correspond to the piercing grooves.

In any of the above technical solutions, further, there are multiple barbs in the present invention, and the multiple barbs are arranged at intervals on the second connecting member.

In any of the above technical solutions, further, a plurality of first protruding teeth are provided on the side of the first connecting piece of the present invention close to the second connecting piece; the second connecting piece is close to the first connecting piece One side of the piece is provided with a plurality of second protruding teeth;

The first protruding teeth and the second protruding teeth are arranged at intervals.

In any of the above technical solutions, further, the end of the first protruding tooth of the utility model close to the second connecting piece is set at a sharp angle;

And/or, the end of the second protruding tooth close to the first connecting piece is set at a sharp angle.

In any of the above technical solutions, further, the tendon fixation device described in the present invention further includes a second connecting nail;

An extension part is arranged on the first connecting piece, and the second connecting nail can be inserted through the extension part.

In any of the above technical solutions, further, the extension part of the present invention has a mesh structure.

In any of the above technical solutions, further, the first connecting nail and/or the second connecting nail of the present invention has a tapered tip.

In any of the above technical solutions, further, the materials of the first connecting part, the second connecting part and the first connecting nail in the present invention are metal materials or absorbable materials.

By adopting the above technical scheme, the utility model has the following beneficial effects:

When the first connecting piece and the second connecting piece fix the damaged tendon, the tendon stump can be positioned between the first connecting piece and the second connecting piece; then, the first connecting nail is moved away from the first connecting hole One side of the second connecting piece is inserted into the first connecting hole, passes through the tendon stump, and passes through the second connecting hole. Wherein, the part of the first connecting nail pierced through the second connecting hole is implanted into the bone bed to realize the fixation of the tendon stump to the bone bed. In addition, when the first connecting nail is gradually implanted into the bone bed, the first connecting nail pushes The first connecting part gradually moves towards the direction of the second connecting part, so that the second connecting part fits tightly on the bone bed, thereby realizing the clamping of the tendon stump between the first connecting part and the second connecting part Fixation, thereby improving the stability and firmness of the tendon stump fixed to the bone bed.

At the same time, the tendon stump is occluded and clamped by the first connecting piece and the second connecting piece, and when the first connecting nail passes through the tendon stump, it can also realize the extrusion of the tendon stump, thereby increasing the The clamping force on the tendon stump is improved, and the stability and firmness of the tendon stump being fixed to the bone bed are further improved. In addition, since the tendon stump is fixed to the bone bed through the second connecting piece, and the first connecting nail provides clamping force to the tendon stump through the first connecting piece, instead of making the tendon stump directly contact with the bone bed, the second The first connecting piece and the corresponding second connecting piece have different sizes and shapes, which can meet the needs of tendon fixation in different parts, and the first connecting nail can be implanted through the extension part, thereby increasing the healing surface of the tendon stump and the bone bed tissue, effectively Good for tendon healing.

To sum up, this embodiment replaces the suturing and bundling of tendon fibers with high-strength wires by the tendon fixation device, which hardly interferes with the normal running of the tendon, is more conducive to the recovery of tendon function, and relieves the tendon fixation device existing in the prior art. For the technical problem that the fixation effectiveness of the tendon stump and the bone bed is poor.

Additional aspects and advantages of the invention will become apparent in the description which follows, or may be learned by practice of the invention.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is the schematic structural view of the tendon fixation device provided by the embodiment of the present invention;

Fig. 2 is a structural schematic diagram of another structure of the tendon fixation device provided by the embodiment of the present invention;

Fig. 3 is a schematic structural view of the first connector of the tendon fixation device provided by the embodiment of the present invention;

Fig. 4 is a structural schematic diagram of another structure of the first connector of the tendon fixation device provided by the embodiment of the present invention;

Fig. 5 is a schematic structural view of the second connecting part of the tendon fixation device provided by the embodiment of the present invention.

Icons: 1-first connecting piece; 11-first connecting hole; 2-second connecting piece; 21-second connecting hole; 3-first connecting nail; 41-grooving; 42-barb; 5-extension Department; 61-the first convex tooth; 62-the second convex tooth.

Detailed ways

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

In the prior art, the tendon fixation device has poor effectiveness and firmness in fixing the tendon stump and the bone bed.

In view of the above problems, this embodiment provides a tendon fixation device, as shown in Figure 1-Figure 5, Figure 1 is a schematic structural diagram of the tendon fixation device provided by the embodiment of the utility model; Schematic diagram of another structure of the tendon fixation device; the tendon fixation device of this embodiment includes a first connecting piece 1 , a second connecting piece 2 and a first connecting nail 3 .

Fig. 3 is a schematic structural view of the first connector of the tendon fixation device provided by the embodiment of the present utility model; Fig. 5 is a schematic structural view of the second connector of the tendon fixation device provided by the embodiment of the present utility model; A first connecting hole 11 is opened, and a second connecting hole 21 is opened on the second connecting member 2 .

The first connecting nail 3 is inserted into the first connecting hole 11 , can pass through the tendon stump between the first connecting member 1 and the second connecting member 2 , and pass through the second connecting hole 21 . That is to say, the first connecting piece 1 and the second connecting piece 2 are arranged opposite to each other for accommodating the tendon stump, and the first connecting hole 11 and the second connecting hole 21 correspond to each other. It should be noted that the first connecting part 1 and the second connecting part 2 can be made into different sizes, radians and shapes according to the needs of tendons in different parts, for example, the first connecting part 1 and the second connecting part 2 can be elongated , square, cylindrical, etc.

When the first connecting piece and the second connecting piece fix the damaged tendon, the tendon stump can be positioned between the first connecting piece 1 and the second connecting piece 2; The connecting hole 11 is inserted into the first connecting hole 11 on the side away from the second connecting member 2 , passes through the tendon stump and then passes through the second connecting hole 21 . Wherein, the part of the first connecting nail 3 pierced through the second connecting hole 21 is implanted into the bone bed to realize the fixation of the tendon stump to the bone bed. In addition, when the first connecting nail 3 is gradually implanted into the bone bed, the first The connecting nail 3 pushes the first connecting piece 1 to gradually move towards the direction close to the second connecting piece 2, so that the second connecting piece 2 fits tightly on the bone bed, so that the tendon stump can be connected between the first connecting piece 1 and the second connecting piece 2. The clamping and fixing between the two connecting parts 2 further improves the stability and firmness of the tendon stump being fixedly connected to the bone bed.

At the same time, the tendon stump is occluded and clamped by the first connecting piece 1 and the second connecting piece 2, and when the first connecting nail 3 passes through the tendon stump, it can also squeeze the tendon stump, thereby The compression effect increases the clamping force on the tendon stump, further improving the stability and firmness of the tendon stump being fixed to the bone bed.

In addition, since the tendon stump is fixed to the bone bed through the second connecting piece 2, and the first connecting nail 3 provides clamping force to the tendon stump through the first connecting piece 1, instead of making the tendon stump directly contact the bone bed Connection, the first connecting piece 1 and the corresponding second connecting piece 2 have different sizes and shapes, which can meet the needs of tendon fixation in different parts, and the first connecting nail 3 can be implanted through the extension part, thereby increasing the tendon stump and the bone bed The healing side of the tissue, which is conducive to tendon healing.

To sum up, this embodiment replaces the suturing and bundling of tendon fibers with high-strength wires by the tendon fixation device, which hardly interferes with the normal running of the tendon, is more conducive to the recovery of tendon function, and relieves the tendon fixation device existing in the prior art. For the technical problem that the fixation effectiveness of the tendon stump and the bone bed is poor.

Referring to Figures 3-5, in the tendon fixation device of this embodiment, there are multiple first connecting holes 11, and the multiple first connecting holes 11 are evenly spaced on the first connecting member 1; the second connecting There are multiple holes 21 , and multiple second connecting holes 21 are evenly spaced on the second connecting member 2 ; the first connecting holes 11 correspond to the second connecting holes 21 .

Simultaneous implantation of multiple first connecting nails 3, on the one hand, improves the connection strength between the tendon stump and the first connecting piece 1 and the second connecting piece 2, thereby improving the connection strength between the tendon stump and the bone bed; on the other hand On the one hand, the contact surface between the tendon stump and the bone bed is larger, which is conducive to the rapid healing of the tendon stump and the bone bed.

Preferably, as shown in FIG. 3-FIG. 5 , the side of the first connecting piece 1 close to the second connecting piece 2 is provided with a through groove 41 ; the side of the second connecting piece 2 close to the first connecting piece 1 is provided with a barb 42 , And the barb 42 corresponds to the groove 41; when the tendon stump is placed between the first connector 1 and the second connector 2, the first connector 1 and the second connector 2 can clamp the tendon stump Take, at this time, the barb 42 can pass through the slot 41 to position the first connecting piece 1 and the second connecting piece 2, and realize the initial connection of the first connecting piece 1 and the second connecting piece 2, so that the first connecting piece 1 and the second connecting piece 2 can be positioned A connecting piece 1, the tendon stump and the second connecting piece 2 can be connected into one body.

Preferably, as shown in FIG. 3-FIG. 5, a plurality of first protruding teeth 61 are provided on the side of the first connecting part 1 close to the second connecting part 2; There are multiple second protruding teeth 62; the first protruding teeth 61 and the second protruding teeth 62 are arranged at intervals.

The first protruding teeth 61 and the second protruding teeth 62 can grasp the tendon stump located between the first connecting part 1 and the second connecting part 2, which improves the grasping of the first connecting part 1 and the second connecting part 2 Gripping force of the tendon stump.

Preferably, as shown in FIGS. 3-5 , the end of the first protruding tooth 61 close to the second connecting piece 2 is provided with a sharp angle; and/or, the end of the second protruding tooth 62 close to the first connecting piece 1 has a sharp angle angle set.

Specifically, the end of the first protruding tooth 61 close to the second connecting piece 2 is set at a sharp angle; or, the end of the second protruding tooth 62 close to the first connecting piece 1 is set at a sharp angle; or, the first protruding tooth 61 is set at a sharp angle. An end close to the second connecting part 2 is provided with a sharp angle; and, an end of the second protruding tooth 62 close to the first connecting part 1 is provided with a sharp angle.

Preferably, the end of the first protruding tooth 61 close to the second connecting part 2 is provided with a sharp angle; and the end of the second protruding tooth 62 close to the first connecting part 1 is provided with a sharp angle.

Since the first protruding teeth 61 and the second protruding teeth 62 are set at sharp angles, they can more firmly grasp the tendon stump, and further improve the grasping strength of the tendon stump, which can effectively resist muscle contraction and reduce The risk of parallel movement of the tendon stump within the first link 1 and the second link 2 when the tendon stump is squeezed, thus allowing the tendon stump to be repaired in situ.

Preferably, there are multiple barbs 42 , and the multiple barbs 42 are arranged at intervals on the second connecting member 2 , for example, the number of barbs is two, three or four. Optionally, as shown in FIG. 5 , there are two barbs 42 ; there are also two corresponding through grooves 41 .

Preferably, the first protruding teeth 61 are arranged in an array on the first connecting member 1 ; the second protruding teeth 62 are arranged in an array on the second connecting member 2 , and the first protruding teeth 61 and the second protruding teeth 62 are arranged alternately.

Preferably, referring to Fig. 2 and Fig. 4, the tendon fixation device of this embodiment further includes a second connecting nail (not shown in the figure);

An extension portion 5 is disposed on the first connecting member 1 , and the second connecting nail can be inserted through the extension portion 5 .

Preferably, the structure of the second connecting nail is the same as that of the first connecting nail 3 .

When in use, after the tendon stump is fixed to the bone bed through the first connector 1 and the second connector 2, the extension part 5 is further attached to the bone bed, and the second connecting nail nails the extension part 5 to the bone bed , increasing the tendon stump and the healing surface of the bone, so that it has a better ability to withstand stress in the short term, and is more conducive to the healing of the tendon in the long term; in addition, the extension part 5 has a certain restraint and fixation effect on the tendon, which is beneficial to the tendon. Attached to further facilitate the healing of the tendon.

Optionally, as shown in FIG. 4 , the extension part 5 has a mesh structure, so as to facilitate the penetration of the second connecting nail.

For example, the extension part 5 is a mesh cloth.

It should be noted that, according to the need, the second connecting nail is implanted through the mesh structure, which increases the contact surface with the bone bed and ensures the healing of the tendon, while the excess mesh structure can be trimmed or retained according to the need to make it more flexible. Good guide restrains and immobilizes the tendon.

To sum up, the tendon fixation device provided by this embodiment is fixed at multiple points by multiple first connecting nails 3, and combined with the fixation of the mesh structure, the situation of point-like fixation of anchors is changed, and the contact surface with the bone bed is increased. It is more conducive to effective healing with the bone bed surface and ensures long-term stability.

Preferably, as shown in FIG. 1 and FIG. 2 , the first connecting nail 3 and/or the second connecting nail has a tapered tip.

Specifically, the first connecting nail 3 has a tapered tip; or, the second connecting nail has a tapered tip; or, both the first connecting nail 3 and the second connecting nail in this embodiment have a tapered tip. cutting edge.

Preferably, both the first connecting nail 3 and the second connecting nail in this embodiment have tapered tips.

The first connecting nail 3 has a tapered tip, so that the first connecting nail 3 passes through the tendon stump, and facilitates the implantation of the first connecting nail 3 into the bone bed; the second connecting nail has a tapered tip, so that The second connecting nail is implanted in the bone bed.

For example, the tip of the first connecting nail 3 is a cone or a truncated cone; the tip of the second connecting nail is a cone or a truncated cone.

Preferably, the materials of the first connecting part 1 , the second connecting part 2 and the first connecting nail 3 are metal materials or absorbable materials.

Preferably, the materials of the extension part 5 and the second connecting nail in this embodiment are also absorbable materials.

Optionally, the absorbable material is an organic material such as polylactic acid.

Absorbable medical materials are adopted. With the gradual healing of the tendon and the bone bed and the prolongation of the retention time of the absorbable material in the human body, the extension part 5 made of the absorbable material will be gradually absorbed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand : It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the various embodiments of the present invention Scope of technical solutions.

Claims (10)

1. A tendon fixation device, characterized in that it comprises a first connecting piece, a second connecting piece and a first connecting nail; A first connecting hole is opened on the first connecting piece, and a second connecting hole is opened on the second connecting piece; The first connecting nail is inserted into the first connecting hole, can pass through the tendon stump between the first connecting part and the second connecting part, and pass through the second connecting hole . 2. The tendon fixation device according to claim 1, wherein there are multiple first connecting holes, and the multiple first connecting holes are evenly spaced on the first connecting member; There are a plurality of second connection holes, and the plurality of second connection holes are evenly spaced on the second connector; The first connecting hole corresponds to the second connecting hole. 3. The tendon fixation device according to claim 1, wherein a groove is provided on a side of the first connecting piece close to the second connecting piece; the second connecting piece is close to the first connecting piece Barbs are provided on one side, and the barbs correspond to the piercing grooves. 4. The tendon fixation device according to claim 3, wherein there are multiple barbs, and the multiple barbs are arranged at intervals on the second connecting member. 5. The tendon fixation device according to claim 1, wherein a plurality of first protruding teeth are provided on a side of the first connecting part close to the second connecting part; One side of the first connecting piece is provided with a plurality of second protruding teeth; The first protruding teeth and the second protruding teeth are arranged at intervals. 6. The tendon fixation device according to claim 5, characterized in that, the end of the first protruding tooth close to the second connecting piece is set at a sharp angle; And/or, the end of the second protruding tooth close to the first connecting piece is set at a sharp angle. 7. The tendon fixation device according to claim 1, further comprising a second connecting nail; An extension part is arranged on the first connecting piece, and the second connecting nail can be inserted through the extension part. 8. The tendon fixation device according to claim 7, wherein the extension part is a mesh structure. 9. The tendon fixation device according to claim 7, characterized in that, the first connecting nail and/or the second connecting nail has a tapered tip. 10. The tendon fixation device according to any one of claims 1-9, characterized in that, the materials of the first connecting member, the second connecting member and the first connecting nail are metal materials or absorbable Material.