Reverse self-tapping fixing machine and implant for cross ligament reconstruction operations

Abstract

The invention relates to a reverse self-tapping fixing machine and an implant for cross ligament reconstruction operations, which solves the problem that the traditional machine has easy interference and complicated structure by cutting the pull wire to separate and leave the implant into the human body. The reverse self-tapping fixing machine comprises a fixing rod. One end of the fixing rod is a connecting end and is provided with an implant, and the other end thereof is a force applying end. The fixing rod is provided with two embedding grooves. The force applying end and the connecting end are respectively provided with a wire tying part and a connecting groove. A pull wire forms a path for sealing the connecting groove through the embedding grooves, the wire tying part and the connecting groove, and is provided with a wire cutting notch. The implant comprises a hollow bone screw, a connecting pin and a fixing buckle. The outside of the hollow bone screw is provided with two pin openings to enable the connecting pin to penetrate into the connecting groove. The other end of the hollow bone screw is connected with the fixing buckle, and is provided with a limiting neck to match with the limiting part of the fixing buckle to limit the position of the fixing buckle. The other end of the hollow bone screw is provided with a penetrating part. By utilizing the structure, the reverse self-tapping fixing machine enables the operation to be favorably performed, reduces the manufacture cost of the machine, and is favorable for patients.

Description

technical field [0001] The invention relates to a reverse self-tapping fixation instrument and an implant for cruciate ligament reconstruction surgery, in particular to a reverse self-tapping fixation instrument and implant for cruciate ligament reconstruction surgery using cutting tension lines to separate implants in the body. thing. Background technique [0002] The knee is one of the largest joints in the human body. Among them, the cruciate ligament provides the main stability of the knee joint, prevents the femur from slipping forward, and limits the steering function of the tibia. However, it is also one of the most frequently injured ligaments, causing the cruciate ligament The cause of injury is usually sports injuries, car accidents, falls and other sudden external force applied to the knee, or aging and relaxation caused by aging, causing the cruciate ligament to rupture or lose its function, causing the patient to experience knee joint weakness or muscle strength...

AI Technical Summary

Problems solved by technology

[0004] Another way to fix ligaments or implants is to use an interface screw (interference screw), as shown in US Patent No. 6,589,245 "Interference Screw (Interference Screw)", which is better than the above-mentioned buckle-type implant (endo-button implant). ) will not leave too much empty space in the bone, the surgical wound is small, and the patient will not feel a foreign body sensation after the operation, and the interface screw (interference screw) is internally fixed, which can be tightened and positioned more accurately Ligaments or implants, however, are insufficient because the interface screw fixes the ligament or implants, the ligament or implants are pressed and fixed on the perforated inner wall of the bone by means of the interface screws, and the ligament or implants contact the bone There is only one side of the place, and the ligament or implant is flattened after the operation, so that a gap will be created after the interface screw is absorbed by the human body. (Interference screw) positioning and disengagement of the instrument structure and steps are complex, resulting in inconvenience in the operation process, interference between the implant and the instrument, etc., which is really insufficient

[0005] It can be seen that the above-mentioned existing reverse self-tapping fixation instruments and implants for cruciate ligament reconstruction surgery obviously still have inconvenience and defects in structure and use, and need to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem

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