Externally clamping fixed high-functionality artificial wrist joint prosthesis device

Abstract

The invention discloses an externally clamping fixed high-functionality artificial wrist joint prosthesis device. The device comprises a wrist joint cotyle (1) and a wrist joint boss (2) which are matched in a sliding manner, wherein a cotyle cone (3) is arranged at the bottom of the wrist joint cotyle (1); a convex cone (4) is arranged at the top of the wrist joint boss (2); the cotyle cone (3) is connected and matched with a radius clamping band (6); the convex cone (4) is connected and matched with a second metacarpal clamping band (7). The device adopts the wrist joint boss and the wrist joint cotyle as wrist joint pivot mechanisms, and the cotyle cone and the convex cone are matched with the radius and / or the metacarpal in a clamping manner via alloy clamping bands with a memory function. The device is simple in structure, simple and convenient to operate, and stable and reliable to work, and effectively overcomes the defects in the prior art as follows: connection is loose on account of marrow cavity inner inserted connection matching, namely a connection structure arranged in a marrow cavity; a bone structure is easy to damage; the service life is short; a secondary operation is needful. Therefore, the device facilitates the function recovery of a patient wrist, and the patient's pain is reduced.

Description

technical field [0001] The invention belongs to the technical field of orthopedic fixation, and in particular relates to an external clip-fixed high-functional artificial wrist joint prosthesis device suitable for replacement and reset of the wrist joint prosthesis. Background technique [0002] The wrist joint is the most flexible and important functional part of the human body. For the treatment of traumatic, degenerative wrist arthritis, severely damaged wrist joints and other diseases, most of the treatments used to be partial or total wrist joint fusion. With the development of medicine, more patients urgently hope to be able to retain their wrist joint activities while solving the pain. Wrist joint replacement has become the best option for those patients who have special requirements or wishes for wrist joint activities and high joint function requirements. A suitable choice. Due to the frequent application of human wrist joints, the previous wrist joint replaceme...

AI Technical Summary

Problems solved by technology

[0002] The wrist joint is the most flexible and important functional part of the human body. For the treatment of traumatic, degenerative wrist arthritis, severely damaged wrist joints and other diseases, most of the treatments used to be partial or total wrist joint fusion. With the development of medicine, more patients urgently hope to be able to retain their wrist joint activities while solving pain. Wrist joint replacement has become the best option for those patients who have special requirements or wishes for wrist joint activities and high joint function requirements. A suitable choice. Due to the frequent application of human wrist joints, the previous wrist joint replacement prosthesis is easy to loosen and dislocate, causing patients to suffer from surgery again. Therefore, it is very important to develop a high-functional replacement technology suitable for artificial wrist joint prosthesis. Necessary, especially for the functional recovery of the patient, that is, the service life of the wrist prosthesis is very beneficial

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