Continuous passive motion device
First Claim
1. A continuous passive motion device for therapy of a patient'"'"'s hand comprising a splint means adapted to be attached to the patient'"'"'s forearm and hand, an actuator means mounted to said splint means and comprising a motor means for driving a transmission means provided in a housing rotatably mounted to said motor means along a first axis, a digit attachment means extending from said housing and adapted for pivoting relative thereto about a second axis spaced apart from and parallel to said first axis, said digit attachment means being adapted for attachment to at least one of the patient'"'"'s fingers, said transmission means upon actuation of said motor means causing said digit attachment means to counter-rotate about said second axis and relative to the rotation of said housing about said first axis, whereby said at least one finger is driven along a reciprocal path of motion corresponding at least to a portion of a compound spiral.
7 Assignments
0 Petitions
Accused Products
Abstract
A continuous motion device for the therapy and rehabilitation of a patient'"'"'s hand and fingers comprises a splint adapted to be mounted to the patient'"'"'s forearm and hand, a gear housing rotatably mounted around a reversible motor, with the reversible motor driving a gear mechanism provided in the gear housing. The gear mechanism driving a digit attachment member in a rotational movement therewith. When actuated, the reversible motor causes the gear housing to rotate about the axis of the motor with the digit attachment member counter-rotating relative to the gear housing about another axis spaced apart from and parallel to the motor axis, whereby the absolute motion of the digit attachment member and therefore of the patient'"'"'s fingers follow a compound spiral. The compound spiral, depending on the ratios of the gears of the gear mechanism, can follow one of a series of multiple lobed compound spirals, having open or closed loops. The range of motion of the digit attachment member and the speed thereof can be adjusted. Various motions can thus be imparted to the fingers of the patient.
43 Citations
10 Claims
- 1. A continuous passive motion device for therapy of a patient'"'"'s hand comprising a splint means adapted to be attached to the patient'"'"'s forearm and hand, an actuator means mounted to said splint means and comprising a motor means for driving a transmission means provided in a housing rotatably mounted to said motor means along a first axis, a digit attachment means extending from said housing and adapted for pivoting relative thereto about a second axis spaced apart from and parallel to said first axis, said digit attachment means being adapted for attachment to at least one of the patient'"'"'s fingers, said transmission means upon actuation of said motor means causing said digit attachment means to counter-rotate about said second axis and relative to the rotation of said housing about said first axis, whereby said at least one finger is driven along a reciprocal path of motion corresponding at least to a portion of a compound spiral.
Specification