Bionic mechanical prosthetic hand driven by wrist joint

Abstract

The invention relates to a bionic mechanical prosthetic hand driven by a wrist joint, comprising a wrist module, a metacarpal joint module and a plurality of finger mechanisms. Each finger mechanism comprises a first knuckle, a second knuckle, a third knuckle, a facet joint knuckle connecting rod and a large joint knuckle connecting rod, wherein one end of the first knuckle is respectively connected with the facet joint knuckle connecting rod and the second knuckle, one end of the second knuckle is respectively connected with the large joint knuckle connecting rod and the third knuckle, one end of the third knuckle is connected with a through-going shaft, one end of the large joint knuckle connecting rod is connected with the driving rod of the wrist joint, the other end is connected with the facet joint knuckle connecting rod; and the wrist module comprises a wrist joint drive rod, a wrist connecting block and a wrist fixing ring, the wrist fixing ring fixed on the wrist is connected with the wrist connecting block rotatably through a connecting shaft. The prosthetic hand not only has the flexion and extension function of human fingers, and has grasping and kneading functions. The device is small and exquisite, and the appearance is close to the size of human fingers, so that the bionic mechanical prosthetic hand is suitable for patients with metacarpal amputation or high phalanx amputation to wear.

Description

technical field [0001] The invention relates to an upper limb prosthesis of a medical device, in particular to a bionic mechanical prosthetic hand driven by a wrist joint that can realize the bionic grasping function of fingers by using the movement of the wrist joint. Background technique [0002] The research on the humanoid prosthetic hand of the disabled is to improve the quality of life of the disabled and promote the development of social rehabilitation. This research has become a hot spot in rehabilitation engineering and robotics. Since the 1990s, intelligent dexterous hands with precise grasping and manipulation have appeared one after another, such as NASA's humanoid dexterous hand and DLR's humanoid dexterous hand. This type of hand is based on space operations, has multiple sensory functions, and has a high degree of intelligence. , the system is complex. On this basis, humanoid hands with light weight, simple structure and multiple fingers, such as Southampton ...

AI Technical Summary

Problems solved by technology

Since the 1990s, intelligent dexterous hands with precise grasping and manipulation have appeared one after another, such as NASA's humanoid dexterous hand and DLR's humanoid dexterous hand. This type of hand is based on space operations, has multiple sensory functions, and has a high degree of intelligence. , the system is complex

This type of prosthetic hand has good anthropomorphic features in terms of shape and weight, but compared to the actual situation of most disabled people, it is expensive

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