MOBILE FINGER FOR A PROSTHESIS AND FINGERS FOR A PROSTHESIS OF UPPER EXTREMITY

摘要

A movable finger for prostheses, having a base (1) disposed between the back and the palm of a hand, a first intermediate portion (3) connected to the base (1), a second intermediate portion (5) connected to the first intermediate portion (3), and a fingertip (7) connected to the second intermediate portion (5), comprises: a first intermediate portion bending mechanism (22) for actuating an actuator (12) disposed in the base (1) to pull a first wire (11) to turn an eccentric member (17), pulling and bending the first intermediate portion (3) by the eccentric member (17) through a first intermediate portion pulling spring (19), and straightening it by a first intermediate portion straightening spring (21); a second intermediate portion bending mechanism (30) for pulling a second wire (23) wound around a pulley (24) disposed as a movable pulley in the first intermediate portion by the eccentric member (17), pulling and bending the second intermediate portion (5) by a third wire (27) connected to the pulley (24) and straightening it by a second intermediate portion straightening spring (29); and a fingertip bending mechanism (36) for pulling and bending a fingertip (7) by a fourth wire (32) connected to the first intermediate portion (3), and pulling and straightening it by a fifth wire (34), which is connected to the first intermediate portion (3) and drawn around through a route different from that of the fourth wire (32). IMAGE