Myoelectric prosthetic hand for self-rehabilitation training of patients with hand dysfunction

Disclosed is a myoelectric prosthetic hand for self-rehabilitation training of patients with hand dysfunction. A miniature direct-current motor drives fingers, which are used for assisting hand movement of a patient, of a mechanical prosthetic hand via a gear transmission mechanism. The myoelectric prosthetic hand is characterized in that two myoelectric signal acquisition electrodes are attached on areas, with more active myoelectric signals, of an arm of the patient and are used for respectively acquiring finger unfolding and folding myoelectric signals, the two myoelectric signals are inputted to a control module comprising a single chip microcomputer and a motor driving circuit, the single chip microcomputer outputs unfolding and folding signals of the prosthetic hand, the motor driving circuit drives the miniature direct-current motor to forwards rotate or reversely rotate, and the gear transmission mechanism drives the prosthetic hand to be folded or unfolded so as to drive the hand of the patient to be unfolded and folded.