Patent ID: 8574178

Claim:
A rehabilitation system for training hand movement of a user, the system comprising: a platform adapted to be attached to a hand of the user; a plurality of finger assemblies operatively connected to the platform, each finger assembly having: a motor, a proximal follower assembly for a metacarpophalangeal (MCP) joint having a proximal rail guide operatively connected to the motor, and an intermediate follower assembly for a proximal interphalangeal (PIP) joint having an intermediate rail guide operatively connected to the proximal follower assembly; wherein a first knuckle joint indicator of the proximal rail guide identifies a location of a first virtual center and a second knuckle joint indicator of the intermediate rail guide identifies a location of a second virtual center, an alignment of the knuckle joint indicators to the virtual centers enable motion of a finger of the hand to be controlled and maintain rotational axes of the finger about each virtual center when the proximal and intermediate follower assemblies are actuated by the motor.