Manufacturing method of joint prostheses and manufacturing method of trial molds of joint prostheses

Abstract

The invention discloses a manufacturing method of joint prostheses and a manufacturing method of trial molds of the joint prostheses. The manufacturing method of the joint prostheses is characterizedby comprising the following steps: (1) three-dimensional models of thigh bones and tibias are established based on medical image data of joints of a patient; (2) the three-dimensional models, obtainedin the step (1), of the thigh bones and the tibias are subjected to simulation osteotomy through software; (3) according to the osteotomy amount in the step (2) and the three-dimensional models, obtained in the step (1), of the thigh bones and the tibias, three-dimensional models of the thigh bone prosthesis, the tibia prosthesis and the meniscus prosthesis are designed; (4) according to the three-dimensional models, designed in the step (3), of the thigh bone prosthesis, the tibia prosthesis and the meniscus prosthesis, the thigh bone trial mold, the tibia trial mold and the meniscus trial mold are designed; and (5) according to the three-dimensional models of the prostheses designed in the step (3) and the trial molds designed in the step (4), corresponding parts are processed. The replaced joint prostheses and the trial molds corresponding to the joint prostheses are designed, thus the trial molds and the joint prostheses are optimally matched, and the joint prostheses and the patient are optimally matched.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method for manufacturing a joint prosthesis and a method for manufacturing a trial mold. Background technique [0002] Total knee replacement is a common orthopedic procedure for patients whose limbs have been severely damaged due to arthritis or injury. During the procedure, the fractured or damaged broken part is fixed internally by an appropriate implant or replaced by the most suitable prosthesis available. [0003] Knee arthroplasty is currently widely used clinically. It is a mature surgical technique in the field of joint surgery and has an absolute surgical effect on alleviating knee joint pain and deformity in elderly patients. [0004] Studies have shown that the anatomical shape of the knee joint of each individual patient is different, and the current knee prosthesis system for total knee replacement is a standardized, modular design of several different ty...

AI Technical Summary

Problems solved by technology

[0004] Studies have shown that the anatomical shape of the knee joint of each individual patient is different, and the current knee prosthesis system for total knee replacement is a standardized, modular design of several different types of prostheses, such standardized prostheses and patients Individual knee joint morphology will appear mismatched

The mismatch between the prosthesis and the shape of the knee joint will cause incomplete coverage or suspension of the prosthesis, which will lead to wear and tear of the prosthesis, shortened service life, and clinical symptoms such as knee joint pain and swelling after joint replacement, and even the possibility of prosthesis revision

[0005] At present, 3D printing technology is used to customize the joint prosthesis according to the patient's medical image data, but the fit between the customized joint prosthesis and the general trial mold may be poor, and the hole drilled by the bone and the joint prosthesis through the trial mold The position of the staples does not match perfectly well

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