Research on intelligent motorized prosthetic hand by functional analysis of human hand at near future

It has become possible to have common mechanism of electrical prosthetic hand for infant and grown-ups. For the grasping, the thumb, the index and the middle fingers pinch the object mainly. And the ring and little fingers drive supplementary to support the object. Five fingers have some mechanical compliance for grasping object more surely. The grasp function of this hand will be reinforced in the near future, that will approach to human grasping form (22 modes of gasping). In this report, we describe about the materialization (design and trial manufacture) of 17 kinds of hand mechanism and these control system.