Joint axis angle-adjustable multi-axis ankle joint prosthesis based on fixed axis length

Abstract

The invention discloses a joint axis angle-adjustable multi-axis ankle joint prosthesis based on fixed axis length, and belongs to the technical field of bionic human prostheses. A joint axis part ispositioned in a space defined by a front part, a left part, an upper cover, a rear part, a right part and a bottom cover, and the space angle of a joint axis can be adjusted by adjusting the positionsof all mechanisms in the front part, the rear part, the left part and the right part. Therefore, the prosthesis can be close to the ankle joint structure of the human body to the maximum extent. Partof an adjusting mechanism is arranged outside, so that adjustment is more convenient. Due to the fact that the shaft length is fixed, the structure is more stable, and shaking is not likely to happen. The prosthesis is simple in structure, a wearer can adjust the joint axis angle suitable for himself / herself conveniently, the comfort degree of the wearer is high, the motion coordination of the affected side limb and the normal side limb can be improved, different road surface changes can be adapted, and energy consumption of the wearer is reduced.

Description

technical field [0001] The invention belongs to the technical field of bionic human prosthesis, in particular to a multi-axis ankle joint prosthesis with adjustable joint axis angle based on a fixed axis length. Background technique [0002] At present, the ankle joint prosthesis products on the market are mainly designed with single axis, while the human ankle joint axis is composed of multiple axes. Therefore, the kinematic characteristics of the single axis ankle joint prosthesis are quite different from those of healthy human limbs, which will affect the wearer. In the experience of use, the body feels uncomfortable, the walking gait is unnatural, and the adaptability to inclined roads is low. There are also some multi-axis ankle prosthetic products on the market, but the two-axis space angle of these prostheses is fixed. For different amputee patients, the ankle joint angles of their healthy limbs are different, resulting in the personalized fit of such products. Low, ...

AI Technical Summary

Problems solved by technology

[0002] At present, the ankle joint prosthesis products on the market are mainly designed with single axis, while the human ankle joint axis is composed of multiple axes. Therefore, the kinematic characteristics of the single axis ankle joint prosthesis are quite different from those of healthy human limbs, which will affect the wearer. Experience during use, physical discomfort, unnatural walking gait, low adaptability to inclined roads

There are also some multi-axis ankle prosthetic products on the market, but the two-axis space angle of these prostheses is fixed. For different amputee patients, the ankle joint angles of their healthy limbs are different, resulting in the personalized fit of such products. Low, the wearer's movement coordination between the affected side and the normal side is poor

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