Patent ID: 9707102
Date: 2017-07-18
CPC Classifications: A61F

Claim:
1. A biomechanically driven prosthetic finger assembly, comprising: a distal ring rotatively coupled between a coupling tip and a proximal ring via respective first and second hinged connections; a rocker rotatively coupled between the coupling tip and the proximal ring via respective third and fourth hinged connections; and a plurality of interchangeable sizing shims, each of the sizing shims configured to line one or both of the proximal and distal rings, at least one of the proximal ring and the distal ring comprising a shim-retainment aperture configured to receive and retain one of the sizing shims, wherein: the first and second hinged connections define a midline relative to a z-axis; the third hinged connection is located below the midline; the fourth hinged connection is located above the midline, such that a relative rotational motion between the proximal ring and the distal ring causes a relative rotational motion between the distal ring and the coupling tip to emulate a finger's natural closing motion; and wherein the rocker defines an H-shape having opposing first and second ends, the first end forming a first split prong at the third hinged connection, and the second end forming a second split prong at the fourth hinged connection.