CN114767329A

CN114767329A - Knee joint cruciate ligament repair fixing device

Info

Publication number: CN114767329A
Application number: CN202210701645.2A
Authority: CN
Inventors: 董文兴; 尹济琛
Original assignee: Beijing Tianxing Bomaidi Medical Equipment Co ltd
Current assignee: Beijing Tianxing Medical Co.,Ltd.
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-07-22
Anticipated expiration: 2042-06-21
Also published as: CN114767329B

Abstract

The application relates to the field of surgical auxiliary tools, in particular to a fixing device for repairing cruciate ligaments of knee joints, which comprises: the deformable body is of a flexible deformable structure; a first pull wire attached to a first end of the deformed body for pulling the deformed body through a bore in a bone at the joint; the fixed line penetrates through the deformable body along the axial direction of the deformable body and is used for connecting one end of the deformable body to the flexible band; the fixed line is also used for driving the deformation body to change from a first set state to a second set state under the action of the first traction line and the fixed line when the part of the deformation body in the direction away from the ligament is pulled. This application has and reduces and causes the secondary damage to human tissue after the ligament is fixed, promotes the effect to the fixed steadiness of the ligament of transplanting.

Description

Knee joint cruciate ligament repair fixing device

Technical Field

The application relates to the field of surgical auxiliary tools, in particular to a fixing device for repairing cruciate ligaments of knee joints.

Background

The cruciate ligaments of the knee can be divided into a front ligament and a rear ligament, and when the knee joint moves, part of fibers of the two ligaments are in a tense state; the cruciate ligament can be damaged or even broken during strenuous exercise or accidents, and the cruciate ligament repair operation is carried out in time in order to ensure normal life and reduce the continuous collateral damage on other tissues.

At present, cruciate ligament repair is generally carried out by transplanting ligaments at other parts of a human body to knee joints, wherein a metal loop plate is required to be utilized for assisting in fixing the transplanted ligaments; when carrying out the ligament and transplanting the operation, at first confirm the ligament and transplant the position after, use drilling equipment to drill on thighbone and shin bone, fix the metal loop board on the ligament, later drive the metal loop board through the haulage rope on the metal loop board and pass drilling, with the horizontal overlap joint of metal loop board at the opening part of drilling, later, twist the other end of drilling through fastening screw, realize the fixed to the ligament other end, finally realize the fixed to the ligament.

With respect to the related art in the above, the inventors found that: the ligament is fixed by the aid of the metal loop plate, the part of the metal loop plate, which is in contact with the femur (or tibia), is in hard contact, the deformation generated by the metal loop plate and the femur (or tibia) is miniature deformation, the part of the metal loop plate, which is in contact with the bone, is easy to generate a stress concentration phenomenon, the elastic modulus of the metal is greater than that of the bone (in short, the metal is harder than the bone), and the metal loop plate can extrude the bone; under the great condition of extrusion force when fixed ligament, accomplish fixed follow-up in patient's motion, normal life process, ligament department persistence produces the bad load that circulates, can make the metal loop board cause secondary damage to the bone for the bone produces sunkenly, warp, leads to the metal loop board fracture even, breaks away from with the thighbone.

Disclosure of Invention

In order to reduce the ligament and cause secondary damage to human tissue after fixing, promote the fixed steadiness of ligament to the transplantation, this application provides a knee joint cruciate ligament repair fixing device.

The application provides a fixing device is restoreed to knee joint cruciate ligament adopts following technical scheme:

a knee cruciate ligament repair fixation device comprising:

the deformable body is of a flexible deformable structure;

a first pull wire attached to a first end of the deformed body for pulling the deformed body through a bore in a bone at the joint;

the fixed line penetrates through the deformable body along the axial direction of the deformable body and is used for connecting one end of the deformable body to the tough belt;

the fixed line is also used for driving the deformation body to change from a first set state to a second set state under the action of the first traction line and the fixed line when the part of the deformation body, which is positioned away from the ligament, is pulled;

wherein, in the first state of setting, the deformation body pierces through the drilling on the joint department bone, in the second state of setting, the deformation body passes through in the drilling with the restriction with drilling tip opening butt the deformation body.

By adopting the technical scheme, when the fixing device is used for fixing the ligament, the first traction line is pulled to drive the deformation body and the ligament to move to the set position, then the shaping line is pulled to drive the deformation body to change into the second set state, the deformation body is abutted to the opening of the drill hole in the bone, the ligament is fixed, the deformation body is made of flexible materials, the part in contact with the bone is not prone to stress concentration, and secondary trauma to a patient in the ligament repair process is reduced; the deformation body is difficult to appear falling scheduling problem under the exogenic action, even the follow-up problem that drops that takes place, because this fixing device is whole to be made by flexible material, remains and also is difficult to cause the injury to surrounding tissue in the joint chamber, reduces the injury that causes the patient.

Optionally, the deformable body is a cylindrical structure woven by wires.

Through adopting above-mentioned technical scheme, it is comparatively convenient to drive the deformation body through the design line and warp, compares in setting up the deformation body to solid construction and reduces the resistance that drives the deformation body and warp the in-process, also reduces the restoring force that the deformation body was replied to first settlement state by the second settlement state simultaneously, can promote the stability that the deformation body keeps in the second settlement state.

Optionally, the fixed line passes through the center of the cylindrical structure formed by the deformation body.

Through adopting above-mentioned technical scheme, it is comparatively convenient to the operation that design line and deformation body are connected, promotes the convenience of using.

Optionally, the fixed line passes through the deformation body in a wavy manner.

Through adopting above-mentioned technical scheme, promote the fastness that the fixed line is connected with the morphosome, it is more smooth and easy at the process that pulling fixed line drove the morphosome and warp, simultaneously, fix the morphosome and set for the state also more stably at the second.

Optionally, the first traction wire is detachably connected to the first end of the deformation body.

Through adopting above-mentioned technical scheme, accomplish the ligament and fix the back, pull down first pull wire from the deformation body, can reduce the phenomenon that first pull wire remains on the deformation body.

Optionally, the first traction wire penetrates through the deformable body in a direction perpendicular to the axis of the deformable body, and the first traction wire is in sliding fit with the deformable body.

Through adopting above-mentioned technical scheme, when pulling down first pull wire from the deformation body, directly take out first pull wire from the deformation body can, need not carry out other operations, convenient operation promotes the convenience of operation process.

Optionally, the deformable body further comprises a second traction wire connected to the second end of the deformable body.

Through adopting above-mentioned technical scheme, pulling the second pull wire when pulling first pull wire and drive the deformation body and ligament and remove for the deformation body is in the state of tightening, passes the in-process deformation body of drilling and is in the state of expansion, tightening all the time at the deformation body, is difficult to appear the problem of deformation body and drilling lateral wall hook, and the process that the drive deformation body passed from drilling keeps smoothly.

Optionally, the second traction wire penetrates through the deformable body in a direction perpendicular to the axis of the deformable body, and the second traction wire is in sliding fit with the deformable body.

Through adopting above-mentioned technical scheme, accomplish the fixed back of ligament, can be comparatively convenient pull down the second pull wire.

Optionally, the deformation body has a plurality ofly, and a plurality of deformation bodies set up side by side, first pull wire with the second pull wire all passes a plurality of deformation bodies that set up side by side in proper order.

Through adopting above-mentioned technical scheme, a plurality of deformations are used in coordination, and with the deformation adjustment to the second set state carry out under the state fixed to the ligament, a plurality of deformations butt are at the opening part of drilling, and more firm to the ligament is fixed.

Optionally, the deformation body, the first traction wire, the second traction wire and the shaping wire are all made of ultra-high molecular weight polyethylene.

Through adopting above-mentioned technical scheme, reduce this fixing device and be located the human health and cause the influence, in addition, even take place the problem that drops at subsequent in-process fixing device, this fixing device dissociates also to be difficult to cause the injury to the people in the human body, promotes the security.

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

1. when the fixing device is used for fixing the ligament, the first traction line is pulled to drive the deformation body and the ligament to move to a set position, then the shaping line is pulled to drive the deformation body to change into a second set state, the deformation body is abutted to a drilling hole opening on the bone, the ligament is fixed, the deformation body is made of flexible materials, the part in contact with the bone is not prone to stress concentration, and secondary trauma to a patient in the ligament repair process is reduced; the deformable body is not easy to fall off under the action of external force, and even if the problem of falling off subsequently occurs, the fixing device is integrally made of flexible materials, so that the fixing device is remained in the joint cavity and is not easy to damage surrounding tissues, and the damage to a patient is reduced;

2. through the second pull wire that sets up, pulling the second pull wire when the first pull wire of pulling drives the deformation body and ligament and remove for the deformation body is in the state of tightening, passes the in-process deformation body of drilling and is in the state of expansion, tightening all the time at the deformation body, is difficult to appear the problem of deformation body and drilling lateral wall hook, and the process that the drive deformation body passed from drilling keeps smoothly.

Drawings

FIG. 1 is a schematic view of a repair fixture in accordance with embodiment 1;

FIG. 2 is a schematic sectional view illustrating a connection structure of a fixed line and a deformable body;

fig. 3 is a schematic view of another embodiment of a prosthetic fixation device.

Description of reference numerals: 1. a deformable body; 2. a first traction wire; 3. shaping a line; 4. a second traction wire.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Example 1

The embodiment of the application discloses fixing device is restoreed to knee joint cruciate ligament. The fixing device is integrally woven by wires made of ultra-high molecular weight polyethylene, and referring to fig. 1, the fixing device comprises a deformable body, a first traction wire 2, a shaping wire 3 and a second traction wire 4, wherein the deformable body 1 is a suture loop and is of a cylindrical structure woven by the wires; the first traction wire 2 is arranged at one end of the deformable body 1, the first traction wire 2 penetrates through the deformable body 1, and the first traction wire 2 is in sliding connection with the deformable body 1, so that the deformable body 1 can be pulled to move through the first traction wire 2, and the first traction wire 2 can be directly pulled out of the deformable body 1; the fixed line 3 penetrates through the deformable body 1, and the deformable body 1 is driven to deform by pulling the fixed line 3.

When the fixing device is used for assisting in fixing the ligament, the fixing device is fixed at the end part of the ligament, specifically, the part of the shaping line 3, which penetrates out of the deformation body 1 and is far away from the first traction line 2, is fixed on the ligament, the fixing device can be fixed in a sewing, binding and other modes, two ends of the first traction line 2 are closed and pass through a drill hole in the bone, the ligament is pulled by the first traction line 2 to be inserted into the drill hole, so that the deformation body 1 completely passes through the drill hole, and in the process that the deformation body 1 and the ligament are driven to move by the first traction line 2, the deformation body 1 is in a first set state; and then pulling the fixed line 3 to keep away from one end of the ligament, so that one end of the deformable body 1, which is far away from the ligament, is bent towards the direction in the drill hole to form a U-shaped structure, and then continuously pulling the fixed line 3 to deform the deformable body 1 to a second set state, wherein one part of the deformable body 1 is inserted into the drill hole, and the other part of the deformable body is kept outside the drill hole and is tightly abutted against the surface of the bone, so that the position of the deformable body 1 is fixed.

When fixing the ligament, penetrate the ligament to the drilling from the position between thighbone and the shin bone in, fix the ligament other end to wherein one end fixed mode of ligament according to the aforesaid, realize so that ligament and thighbone, the fixed of shin bone, accomplish the ligament and repair.

The whole fixing device is made of ultra-high molecular weight polyethylene and is made of a flexible material, the parts of the fixing device, which are abutted to the femur and the tibia, are of a flexible structure, and the parts of the fixing device, which are contacted with bones, are not easy to have the phenomenon of stress concentration, so that the secondary trauma to a patient in the ligament repair process is reduced; the problem such as the scheduling that drops appears in the exogenic action not being difficult to for the deformable body 1, even follow-up emergence problem that drops, because this fixing device is whole to be made by flexible material, remains and also is difficult to cause the injury to surrounding tissue in the articular cavity, reduces the wound that causes the patient.

The fixing device is small in size, and when drilling is carried out, only the opening of the drilling hole needs to be ensured to enable the deformable body 1 and the fixed line 3 to penetrate through, so that the size of the opening is reduced, and the wound of a patient caused by the operation process is reduced; under the second settlement state, in the idiosome of deformation inserted into the drilling, and be interference fit between the drilling, another part is located the drilling outside, and the size of the structure that the idiosome 1 is buckled and is formed is greater than the open-ended size of drilling, with bone surface butt, more firm to the ligament is fixed.

Referring to fig. 1 and 2, a shaping line 3 penetrates through a deformable body 1 in a wavy manner, when the shaping line 3 penetrates through the deformable body 1, the shaping line 3 is firstly inserted into an opening at one end of the deformable body 1, then the shaping line 3 penetrates through the side wall of the deformable body 1 to the outside, the shaping line 3 penetrates through the side wall of the deformable body 1 again after extending out of the deformable body 1 for a certain length, and the process is repeated for multiple times in such a circulating manner, so that the shaping line 3 penetrates through the deformable body 1 in a wavy manner; so, can promote the fastness that fixed line 3 and morph 1 are connected, simultaneously, drive morph 1 through tractive fixed line 3 and warp to the in-process of the second settlement state, also can drive the more smooth and easy deformation of morph 1, promote to fix the fastness in the second settlement state with morph 1.

Referring to fig. 1, the second traction wire 4 is located at one end of the transformation body 1 far from the first traction wire 2, and the second traction wire 4 penetrates through the transformation body 1 and is in sliding fit with the transformation body 1; in-process in penetrating the drilling through first pull wire 2 drive deformable body 1 and ligament, first pull wire 2's one end is kept away from to second pull wire 4 is located the ligament, stimulates second pull wire 4 in the time of the first pull wire 2 of pulling for deformable body 1 is in the state of tightening, reduces and causes deformable body 1 and drilling lateral wall to take place the hook scheduling problem under deformable body 1 is in lax state, can promote the smooth and easy nature that drives deformable body 1 and ligament removal process.

Example 2

Referring to fig. 3, the embodiment of the present application is different from embodiment 1 in that there are two deformable bodies 1, there are two corresponding fixing lines 3, the two deformable bodies 1 are arranged side by side, and the two fixing lines 3 respectively penetrate through the two corresponding deformable bodies; through setting up into two with the variant 1, after 3 drive variant 1 of pulling fixed line warp to the second settlement state, the opening part of butt drilling on the bone is more stable, has further promoted the fastness fixed to the ligament.

Of course, in other embodiments, three, four or other numbers of the deformable bodies 1 can be selected, and the shaping lines 3 correspond to the deformable bodies 1 one to one, so that the auxiliary fixation of the ligament can be realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A knee cruciate ligament repair fixation device comprising:

the deformation body (1), the deformation body (1) is a flexible deformation structure;

a first traction wire (2) connected to a first end of the deformable body (1) for pulling the deformable body (1) through a bore hole in a bone at a joint;

the fixed line (3) penetrates through the deformable body (1) along the length direction of the deformable body (1), and the fixed line (3) is used for connecting the second end of the deformable body (1) to a ligament;

the fixed line (3) can be changed from a first set state to a second set state under the action of the first traction line (2) and the fixed line (3);

wherein, in the first state of setting, the deformation body (1) pierces through the drilling on the joint department bone, in the second state of setting, deformation body (1) and drilling tip opening butt are in order to restrict deformation body (1) penetrates in the drilling.

2. The cruciate ligament repair fixation of knee joint of claim 1, wherein: the deformable body (1) is a cylindrical structure formed by weaving wires.

3. The knee cruciate ligament repair fixation device of claim 2, wherein: the fixed line (3) penetrates through the center of the cylindrical structure of the deformable body (1).

4. The knee cruciate ligament repair fixation device of any one of claims 1-3, wherein: the fixed line (3) penetrates through the deformation body (1) in a wavy manner.

5. The cruciate ligament repair fixation of knee joint according to claim 4, wherein: the first traction wire (2) is detachably connected to the first end of the deformation body (1).

6. The cruciate ligament repair fixation of knee joint of claim 5, wherein: the first traction wire (2) penetrates through the deformable body (1) along the direction perpendicular to the axis of the deformable body (1), and the first traction wire (2) is in sliding fit with the deformable body (1).

7. The cruciate ligament repair fixation of knee joint of claim 6, wherein: the deformation body is characterized by further comprising a second traction wire (4), wherein the second traction wire (4) is connected to the second end of the deformation body (1).

8. The knee cruciate ligament repair fixation device of claim 7, wherein: the second traction wire (4) penetrates through the deformation body (1) along the direction perpendicular to the axis of the deformation body (1), and the second traction wire (4) is in sliding fit with the deformation body (1).

9. The knee cruciate ligament repair fixation device of claim 8, wherein: the deformation body (1) has a plurality ofly, and a plurality of deformation bodies (1) set up side by side, first pull wire (2) with second pull wire (4) pass a plurality of deformation bodies (1) that set up side by side in proper order.

10. The cruciate ligament repair fixation of knee joint of claim 9, wherein: the deformation body (1), the first traction wire (2), the second traction wire (4) and the fixed line (3) are all made of ultra-high molecular weight polyethylene.