Biomechanical thumb

摘要

A biomechanically driven artificial thumb assembly is disclosed. Embodiments include an H-shaped rocker and a distal ring configured to receive a remaining portion of a user's thumb, each distal ring and rocker between a coupling tip and a proximal anchor plate. Independently rotationally coupled, the proximal anchor plate is configured to be attached to a hand strap that is secured to the user. The joint tip portion performs joint motion according to the traction force of the H-shaped rocker. Another embodiment includes a bi-directional thumb assembly that includes a ring that is mounted on an adjustable ring tendon, the adjustable ring tendon being rotationally coupled between the coupling tip and the proximal anchor plate, The position anchor plate is rotationally coupled to a hand strap attached to the user. Vertical movement of the remaining thumb in the ring causes the coupling tip to be actuated in a vertical plane. The horizontal movement of the remaining part of the thumb in the ring actuates the coupling tip in the horizontal plane. Other embodiments are also disclosed.