Continuous Passive Motion (CPM) Finger Exerciser

Joint tendon rehabilitation is expedited using motorized robotic devices that continuously exercise the affected digits. Such devices must be easy to use, lightweight, battery powered for ambulatory patients, and enable precise, controlled smooth movements. The continuous passive hand and finger manipulator (CPM) is one example. The gear motor drives a small telescoping leadscrew linear actuator, which reciprocally drives a glove-like assembly that holds the patient’s hand. The result is smooth and continuous extension and flexure of the patient’s joints.

Allied Motion’s CL40 coreless DC motor coupled with an efficient S38 spur reduction gearhead forms a compact gear motor that can efficiently drive the CPM.