A rigid-flexible coupling bionic passive compliant ankle-foot prosthesis

Abstract

The invention discloses a rigid-flexible coupling bionic passive compliance ankle-foot prosthesis, which includes an ankle, a rear foot, a middle foot, a forefoot, a sole, a ligament imitation part I, a ligament imitation part II, and a ligament imitation part III; The rear foot is installed on the rear part of the sole of the foot through the elastic body I, the forefoot is installed on the front part of the sole of the foot through the elastic body II, and the ankle is installed on the rear foot. The upper rear end of the middle foot is connected to the lower front of the ankle through the ball joint I, the rear foot is connected to the lower rear end of the middle foot through the elastic connecting piece, and the front end of the middle foot is connected to the lower end of the ankle through the ball joint II. The rear end of the front foot is connected; the ligament imitation part I is connected with the ankle and the rear foot respectively, and the ligament imitation part II is connected with the ankle and the middle foot respectively; the ligament imitation part III is respectively connected with the middle Foot and forefoot link. The invention combines rigid and flexible materials, which can enhance the user's natural gait characteristics.

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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