Patent ID: 9629731
Date: 2017-04-25
CPC Classifications: A61F

Claim:
1. A bidirectional biomechanical finger assembly for a user's residual finger, comprising: a metacarpophalangeal (MCP) pivot; a distal coupler; and an articulation assembly rotatively coupled between the MCP pivot and the distal coupler, the articulation assembly comprising: an adjustable ring tendon having a distal end, a proximal end, and a longitudinal adjustment mechanism disposed therebetween, the proximal end rotatively coupled with the MCP pivot; a multiple-finger ring configured to receive and retain the residual finger and at least one adjacent finger, the multiple-finger ring selectively disposed upon the adjustable ring tendon at a target location along the longitudinal adjustment mechanism; a proximal coupler; and a distal rocker, wherein: the proximal coupler and the distal rocker are rotatively suspended between a proximal coordinated pivot point anchored upon the adjustable ring tendon and a distal coordinated pivot point anchored upon the distal coupler; the articulation assembly is configured to utilize vertical movements of at least one of the residual finger and the at least one adjacent finger within the multiple-finger ring to articulate the distal coupler within a plane parallel to an x-z plane and about one or more axes parallel to a y axis; and the MCP pivot is configured to utilize lateral movements of at least one of the residual finger and the at least one adjacent finger within the multiple-finger ring to articulate the distal coupler within a plane parallel to an x-y plane and about an axis parallel to a z axis.