Elastically-driven power type bionic knee joint

Abstract

The invention relates to an elastically-driven power type bionic knee joint. The elastically-driven power type bionic knee joint includes a main power drive end, a buffer mechanism, a stiffness adjustment mechanism, a knee joint power output end, and a calf connection end. The main power drive end is used for providing main power for a joint. The buffer mechanism is connected between the main power drive end and the knee joint power output end and is used for transmitting the main power of the drive end to the knee joint power output end. The buffer mechanism includes an elastic element. The stiffness adjustment mechanism is movably connected to the buffer mechanism. The stiffness adjustment mechanism changes the pre-compression amount of the elastic element by moving towards the buffer mechanism to achieve the stiffness adjustment of the joint. The calf connection end is connected to the knee joint power output end. The elastically-driven knee joint can effectively reduce the externalimpact, the joint stiffness is continuously adjustable to adapt to different sports demands, and the elastically-driven knee joint can provide the main power for a prosthesis wearer to reduce the muscle energy consumption of a patient wearing the prosthesis and to improve the wearing comfortableness.

Description

technical field [0001] The invention belongs to the technical field of biomedical engineering and rehabilitation aids, in particular to a dynamic bionic knee joint used in lower limb prosthesis. Background technique [0002] Due to various reasons such as wars, diseases, industrial injuries, traffic accidents and natural disasters, millions of people have lost their healthy lower limbs, and some people have lost their ability to work, which hinders their normal social interactions and bears a huge physical and mental burden. On the other hand, physical disabilities often affect people's daily life, reduce their quality of life, and also bring a heavy burden to their nursing families and society. Since the current level of medical treatment cannot regenerate limbs, installing prosthetic limbs for these amputees has become an important means of compensating for missing limbs. [0003] Existing prosthetic knee joints are mainly passive and semi-active prosthetic knee joints. A...

AI Technical Summary

Problems solved by technology

Although this patent can also provide active torque for the wearer, the hydraulic control method has problems such as oil leakage and greater influence by temperature.

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