2 results about "Prosthesis design" patented technology

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.

The invention discloses a passive power-assisted flexible bionic tension and compression body ankle foot joint prosthesis based on air pressure change. The prosthesis comprises an ankle joint part anda foot part, wherein the foot part comprises a foot part supporting piece lower bottom plate, a foot part supporting piece upper top plate, a foot part supporting piece front assembly, a foot part supporting piece rear assembly, a foot part upper bearing plate, a foot part front air inlet cavity, a foot part rear extrusion air cavity, a foot part stress middle assembly front air cavity and a footpart stress middle assembly rear air cavity. In the bionic design of the flexible prosthesis, the mode of applying the tension and compression body working principle of the human skeleton to the prosthesis design better conforms to the natural characteristics of the human body, the natural gait of the human body can be effectively improved, a feasible thought method is provided for the current design of the flexible prosthesis, and the development of the future prosthesis design is facilitated.