Rigid-flexible coupled bionic passive compliant ankle foot prosthesis

Abstract

The invention discloses a rigid-flexible coupled bionic passive compliant ankle foot prosthesis. Theprosthesis comprises an ankle part, a rear foot part, a middle foot part, a front foot part, a solepart, a ligament imitation part I, a ligament imitation part II and a ligament imitation part III. The rear foot part is installed on the rear portion of the sole part through an elastic body I; the front foot part is installed on the front portion of the sole part through an elastic body II; the ankle part is installed on the rear foot part; the upper portion of the rear end of the middle foot part is connected with the front side of the lower end of the ankle part through a spherical hinge piece I; the rear foot part is connected with the lower portion of the rear end of the middle foot partthrough an elastic connecting piece; the front end of the middle foot part is connected with the rear end of the front foot part through a spherical hinge piece II; the ligament imitation part I is connected with the ankle part and the rear foot part; the ligament imitation part II is connected with the ankle part and the middle foot part; and the ligament imitation piece III is connected with the middle foot part and the front foot part. According to the invention, rigid and flexible materials are combined, so that the natural gait characteristic of a user can be enhanced.

Description

technical field [0001] The invention relates to the field of ankle-foot joint prosthesis, in particular to a rigid-flexible coupling bionic passive compliance ankle-foot prosthesis. Background technique [0002] Today's ankle-foot prostheses are basically solid hard ankle-heel prostheses (SACH) and energy storage and return prostheses (ESR), but due to structural limitations, these two prostheses cannot simulate human nature well. Gait walking. One of the important reasons is that the contact surface of human bone joints is very complex, and the mutual cooperation of multiple virtual movement axes makes each joint have different motion characteristics during daily walking. [0003] In the bionic prosthesis, how to rationally arrange the various ligaments of the human body at the same time, and realize their unique functions, so that the entire ankle skeletal system is dexterous without affecting joint activities is very critical. Therefore, it is very important to design a...

AI Technical Summary

Problems solved by technology

[0004] Although the prosthetics on the market today are mainly made of rigid materials, which can improve the energy efficiency of amputees, they are not satisfactory in terms of improving comfort and reducing production costs.

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