Structure of leg prosthesis

Abstract

The invention relates to a structure of a leg prosthesis. The structure comprises a base plate, a foot plate which is rotatably connected to the base plate by virtue of a first rotating shaft and a driving mechanism which is arranged on the base plate, and further comprises a first transmission mechanism and a second transmission mechanism, wherein the driving mechanism comprises a moving piece which is capable of moving up and down along the base plate; an adapter block is additionally rotatably connected to the upper end of the base plate by virtue of a second rotating shaft; the upper end of the first transmission mechanism is rotatably connected to the adapter block by virtue of a first axial line; the lower end of the first transmission mechanism is rotatably connected to the moving piece by virtue of a second axial line; the upper end of the second transmission mechanism is rotatably connected to a first supporting seat on the base plate by virtue of a third axial line; and the lower end of the third transmission mechanism is rotatably connected to the foot plate by virtue of a fourth axial line. According to the leg prosthesis structure, by simultaneously arranging the driving mechanism and the transmission mechanisms, driving and driven hybrid driving can be implemented on the lower extremity leg prosthesis, so that different gait control effects can be achieved.

Description

technical field [0001] The invention belongs to the technical field of rehabilitation medical equipment, and in particular relates to an artificial leg structure. Background technique [0002] According to the second national sample survey of disabled persons, the types and total number of disabled persons in my country are huge, accounting for 6.34% of the total population of the country. Among them, physical disabilities accounted for 29.07%, ranking first among all types of disabilities. Among them, there are about 2.26 million amputees, accounting for 8% of the disabled. At the same time, among the 2.26 million amputees, about 1.5 million can be fitted with artificial limbs, and 630,000 people urgently need to be fitted with artificial limbs, of which 70% are lower limb amputee. Therefore, the popularization and installation of lower limb artificial limbs is currently the basic need for amputees. important means. Lower limb prostheses can make up for the limb defects ...

AI Technical Summary

Problems solved by technology

The former is to connect the knee and ankle joints together through a mechanical structure. The two joints can move according to a certain relationship, but this design sacrifices a degree of freedom. The angle relationship between the knee and ankle is single and cannot be changed flexibly. Usually, it is purely mechanical. Structural prosthetics will use this design; the latter's knee joint and ankle joint can move independently and freely on the mechanical structure, and the coupled motion of the knee and ankle is realized by the control system for the joint control of the two joints in accordance with the gait law of normal people. , such a design makes it difficult to control the coordinated control of the knee and ankle joints

[0004] At present, the damping lower limb prosthesis is the mainstream of intelligent lower limb prosthesis. This type of lower limb prosthesis can walk on flat ground, ramps and even stairs, but it cannot adapt to occasions that require active torque. At the same time, the walking gait is still relatively large compared with normal gap

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