Knee joint prosthesis with functions of elastic meniscus

Abstract

A knee joint prosthesis with functions of the elastic meniscus comprises a thighbone component; the thighbone component comprises a tibia component; the tibia component comprises a tibial plateau and a tibial tray; an elastic part with functions of the elastic meniscus is arranged between the tibial plateau and the tibial tray and is in contact with the bottom of the tibial plateau; the elastic part can be an elastic pad; the elastic pad is matched with the space which is positioned between the tibial plateau and the tibial tray and capable of accommodating the elastic pad in shape and size; a limit post is arranged below the tibial plateau; a positioning hole is formed on the elastic pad and in a position corresponding to the limit post; and the limit post passes through the positioning hole to be fixed in a clearance fit with an inner hole of a fixing post on the tibial tray. Since the elastic material or part (namely the elastic part) is additionally arranged between the tibial plateau and the tibial tray to simulate the functions of the natural meniscus, the following effects can be achieved that the operation difficulty during operation can be reduced; a favorable buffer can be provided for the knee joint after operation; oscillation conveyed among the joints can be absorbed; abrasion can be reduced substantially; the flexion range of the knee joint can be expanded; and compared with a traditional knee joint prosthesis, the knee joint prosthesis provided by the utility model can improve physical performance of the lower limbs of a human body.

Description

technical field [0001] The invention belongs to the technical field of medical devices and relates to an artificial knee joint prosthesis for treating knee joint diseases. technical background [0002] When the human body walks naturally or does various sports, the knee joint is under considerable force. However, there is a natural meniscus inside the natural knee joint. From the perspective of the shape and location of the meniscus, simply put, the function of the meniscus is to Stabilize the knee joint and spread the load force of the knee joint. It is precisely because of the stabilizing load played by the meniscus that the knee joint is guaranteed to move without damage for many years. [0003] The natural meniscus itself has good elasticity, and it remains elastic when it is compressed from 5mm to 2.5mm. The meniscus is between the femoral condyles and the tibial plateau, acting like a buffer, protecting the articular surfaces of the two and absorbing shocks transmitte...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a knee joint prosthesis with elastic meniscus function to solve the technical problem that the existing knee joint prosthesis does not have the cushioning function of the traditional meniscus and the user cannot bring a more comfortable experience

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