Passive power-assisted flexible bionic tension and compression body ankle foot joint prosthesis based on air pressure change

Abstract

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.

Description

technical field [0001] The invention relates to the field of ankle-foot joint prostheses, in particular to a passive-assisted flexible bionic tension-compression body ankle-foot joint prosthesis based on changes in air pressure. Background technique [0002] Nowadays, with the advancement and development of science and technology, people can install prosthetic limbs to replace their feet after amputation, which can support the human body and assist in walking. However, due to the weight of the prosthetic device itself, the amputee will not only do more useless work when wearing it, but also increase the body load and increase the metabolic rate. And because amputees will suffer a series of additional muscle function damages such as excessive load on the lateral muscles of the limbs and increased load on the muscles at the end of the residual limb when wearing prostheses, which will cause more pain for the amputees. The hazards that occur will be related to the standard of w...

AI Technical Summary

Problems solved by technology

However, due to the weight of the prosthetic device itself, the amputee will not only do more useless work when wearing it, but also increase the body load and increase the metabolic rate

And because amputees will suffer a series of additional muscle function damages such as excessive load on the lateral muscles of the limbs and increased load on the muscles at the end of the residual limb when wearing prostheses, which will cause more pain for the amputees. The hazards caused by accidents will be related to the standard of whether a prosthetic product is good or not

[0003] In addition, the traditional prosthetic design uses the spring-assisted function. This energy conversion method will not only increase the weight of the prosthesis, but also bring more meaningless energy consumption to the amputee. After the prosthesis, it cannot bring a truly continuous and natural power output to the human body's gait

[0004] Changing the overall material of the prosthesis from rigid to flexible will improve the above problems at the same time, so flexible prostheses, as an important future direction of prosthetics development, will have an incomparable role; but now researchers have research on flexible prostheses but very few

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