Knee joint cruciate ligament repair fixing device

Abstract

The invention relates to the field of surgical auxiliary tools, in particular to a knee joint cruciate ligament repairing and fixing device which comprises a deformable body, a fixing part and a fixing part. The first pull wire is connected to the first end of the deformable body and used for pulling the deformable body to penetrate through a drill hole in the bone at the joint; the shaping line penetrates through the deformable body in the axis direction of the deformable body and is used for connecting one end of the deformable body to a ligament; the shaping line is further used for driving the deformable body to be changed into a second set state from a first set state under the action of the first traction line and the shaping line when the part, away from the ligament direction, of the deformable body is pulled. The ligament fixing device has the advantages that secondary damage to human tissue after ligament fixing is reduced, and the fixing stability of the transplanted ligament is improved.

Description

technical field [0001] The present application relates to the field of surgical aids, in particular to a knee cruciate ligament repair and fixation device. Background technique [0002] The knee cruciate ligament can be divided into two parts: the front and the back. When the knee joint is active, part of the fibers of the two ligaments are in a state of tension; during strenuous exercise or accidents, the cruciate ligament may be damaged or even ruptured. In order to ensure a normal life and reduce the continuous collateral damage to other tissues, cruciate ligament repair surgery should be performed in a timely manner. [0003] At present, cruciate ligament repair is generally performed by transplanting ligaments from other parts of the human body to the knee joint, in which a metal tab is needed to assist in fixing the transplanted ligament. , use drilling equipment to drill holes on the femur and tibia, fix the metal loop plate on the ligament, and then drive the metal ...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventors found that: using a metal tab to assist in fixing the ligament, the part where the metal tab is in contact with the femur (or tibia) is in hard contact, and the deformation produced by both is micro-deformation. The part in contact with the bone is prone to stress concentration. The elastic modulus of the metal is greater than that of the bone (simply speaking, the metal is harder than the bone), and the metal tab will squeeze the bone; when fixing the ligament Under the condition of high extrusion force, after the completion of fixation, the ligaments will continue to generate cyclic loads during the patient's exercise and normal life, which will cause secondary damage to the bone by the metal tab, causing the bone to sag, deform, and even is to cause the metal plate to break and detach from the femur

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