Assembly type shoulder joint prosthesis and manufacturing method thereof

Abstract

The invention provides an assembly type shoulder joint prosthesis and a manufacturing method thereof. The assembly type shoulder joint prosthesis comprises a scapula prosthesis, a glenoid cavity prosthesis and a humerus prosthesis, wherein the free end of a glenoid cavity supporting rod of the glenoid cavity prosthesis is in movable pivot connection with a glenoid cavity part of the scapula prosthesis; a glenoid cavity bone inner sleeve of the glenoid cavity prosthesis is arranged in a humeral head hinging groove of the humerus prosthesis; and a bone trabecula structure is arranged on the outer wall of a humerus handle in a coating manner. Through the adoption of the assembly type shoulder joint prosthesis disclosed by the invention, a set of the scapula prosthesis, the glenoid cavity prosthesis and the humerus prosthesis which are assembled in a cooperating manner and are mutually connected and in cooperation is provided, so that the prosthetic replacement requirements of a patient ofwhich the humerus, the glenoid cavity and the scapula are damaged can be met, and relative moving relationship between the scapula and the glenoid cavity of the human body is also practically simulated; and the bone trabecula structure is arranged on the outer wall of the humerus handle in a coating manner, so that the human organism can be quickly and firmly adhered to the prosthesis, and the problem that prosthesis loosening is easy to generate through bone cement, and during polymerization of the bone cement monomer, a large amount of heat is released, and periphery tissue damages are generated are solved.

Description

technical field [0001] The invention relates to the technical field of shoulder joint replacement, in particular to a modular shoulder joint prosthesis and a manufacturing method thereof. Background technique [0002] The shoulder joint is the most flexible joint in the human body. Its main function is to perform flexion, extension, abduction, adduction, external rotation and internal rotation. Therefore, the shoulder joint is an important part of the human body. When the shoulder joint is damaged, in order to reduce the pain of the patient and ensure that the patient can live a normal life in the future, the treatment plan of shoulder joint prosthesis replacement is generally adopted. In the collection of a large number of case plans, it was found that a large proportion of shoulder joint treatment patients had damage to the scapula, glenoid and humerus, requiring overall replacement, but the humeral prosthesis and scapular prosthesis in the existing shoulder joint prosthes...

AI Technical Summary

Problems solved by technology

In the collection of a large number of case plans, it was found that a large proportion of shoulder joint treatment patients had damage to the scapula, glenoid and humerus, requiring overall replacement, but the humeral prosthesis and scapular prosthesis in the existing shoulder joint prosthesis are separate Existence, the humeral shoulder joint is implanted independently with the intact scapula, and the scapula is also implanted independently with the intact humerus, so it cannot meet the needs of simultaneous treatment and replacement of patients with overall shoulder joint damage. In addition, the existing humeral stem of the shoulder joint All replacements are cement-type implants, but bone cement is an inert material, and long-term fretting will cause prosthesis loosening, and bone cement monomers can release a lot of heat when they polymerize, causing damage to surrounding tissues

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