Lower opening type posterior cruciate ligament protector

Abstract

The invention provides a lower opening type posterior cruciate ligament protector. The protector comprises a main body and a protection member which are slidingly connected through a guiding connection structure, the main body is provided with a first smooth surface, and the protection member is provided with a second smooth surface; when the protection member is slidingly connected with the mainbody, the second smooth surface is in fit contact with the first smooth surface, and the part, close to an insertion end, of the second smooth surface is recessed in the direction away from the firstsmooth surface to form a containing space with an opening in one end. A lower opening for containing a posterior cruciate ligament is formed below the middle of the insertion end of the main body andused for reserving a space for the posterior cruciate ligament when the main body is inserted into the position between a tibia and a femur. Compared with products of the first generation, the lower opening type posterior cruciate ligament protector has the advantage that the posterior cruciate ligament can be better protected from damage.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to a lower opening type posterior cruciate ligament protector for total knee replacement. Background technique [0002] The knee joint is one of the most important joints in the human body. Total knee arthroplasty is the main method for the treatment of severe degenerative arthritis of the knee joint in the middle and late stages. It has been widely accepted because it can effectively relieve knee joint pain and reconstruct joint function and range of motion. clinical application. The goal of total knee replacement is to restore normal knee motion, preserve normal knee range of motion and stability, and maintain good knee proprioception. The complete preservation of the posterior cruciate ligament during the operation plays a vital role in the stability of the knee joint, the recovery of the proprioception of the knee joint and the walking gait after surgery. ...

AI Technical Summary

Problems solved by technology

[0006] However, the posterior cruciate ligament protection device in the above-mentioned patent documents needs to insert the fixed guard plate into the bone first, and then use the lever principle to hold the handle and force it backwards to push the tibial plateau forward; Large, it is very difficult to insert the fixed guard plate into the bone near the posterior cruciate ligament, resulting in poor practical application effect

[0007] The applicant has designed a posterior cruciate ligament protector that is easy to operate and has a good protective effect. However, in practical applications, it is found that the bottom of the insertion end is set in a flat plate shape, which will be in contact with the posterior cruciate ligament. Injury to the posterior cruciate ligament, so the applicant made further improvements to the protocol

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