Light intelligent energy-storage energy-releasing ankle prosthesis

Abstract

The invention discloses a light intelligent energy-storage energy-releasing ankle prosthesis. The ankle prosthesis comprises a bionic foot, an ankle joint and a tibia connecting mechanism, and the bionic foot comprises a sole, an arcuate metatarsus and a heel, wherein one end of the metatarsus is fixed to the sole, the other end of the metatarsus is connected with the ankle joint through a bolt, and the extension of the front end of the heel is hinged to the middle of the metatarsus; the ankle joint comprises a spring cover, a central spring, a buffer inner ring, a buffer outer ring, multiplelocking hooks and multiple supporting springs, wherein the buffer inner ring is fixed to the heel, the central spring is arranged in the buffer inner ring in a sleeved mode, the spring cover is arranged at the top end of the central spring in a sleeving mode, a plurality of locking hook grooves are formed in the buffer inner ring, the buffer outer ring is arranged outside the buffer inner ring ina sleeved mode, one ends of the supporting springs are fixed to the heel, and the other ends of the supporting springs are fixed to the bottom end of the buffer outer ring; the tibia connecting mechanism comprises a talus bone and a tibia connecting screw, wherein the front end of the talus bone is hinged to the middle of the metatarsus, the other end is connected with the spring cover, two supporting lugs are arranged on the top surface of the talus bone, and one end of the tibia connecting screw is fixed between the two supporting lugs in a penetrating mode.

Description

technical field [0001] The invention relates to the technical field of human prosthesis, in particular to a portable intelligent energy storage and energy release ankle joint prosthesis. Background technique [0002] In today's society, due to traffic accidents, diseases and other reasons, the number of below-knee amputations is gradually increasing, and the most common ways for lower limb amputee to compensate for their walking ability defects are wheelchairs, crutches and artificial limbs. Wheelchairs occupy a large area and are limited to places that wheeled machines cannot reach, such as walking on stairs. The use of crutches takes up the functions of both hands and reduces the physical function of the wearer. Wearing prosthetics can achieve compensation for the missing functions of the human body, and has advantages in terms of decoration and walking comfort. [0003] At present, there are many types of ankle joint prostheses, classified according to the driving mode,...

AI Technical Summary

Problems solved by technology

Passive ankle joint prostheses use rubber, carbon fiber and other materials to make the foot plate, or introduce energy storage devices such as springs into the mechanism to make the whole foot have a certain degree of elasticity; however, the passive ankle joints currently on the market are generally cumbersome, and disabled people cannot walk flexibly after wearing them.

Passive ankle prosthesis has the advantages of simple mechanism, light weight, and low energy consumption. However, because the passive ankle prosthesis has no power source, there is a problem that the walking of amputee patients does not match the trajectory of normal limbs.

Active ankle prosthesis introduces active driving devices such as motors into the prosthesis mechanism. The main advantage is that the prosthesis ankle joint has many degrees of freedom, the wearer's gait is more natural, and it can adapt to different road conditions. However, the active ankle prosthesis is due to The introduction of the drive unit has disadvantages such as heavy weight, high energy consumption, and high price of the prosthetic system, and it may not be a good thing to have more degrees of freedom in the prosthetic ankle joint, because thigh amputee patients have lost their knee joints, and it is not easy for ankle joints with multiple degrees of freedom. control, which can easily lead to unstable ankle support, which can cause the wearer to fall

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