Knee exercise machine

Details Knee exercise machine Knee exercise machine

1983-03-09

1985-01-08

Hafer, Robert A.

Surgery

Truss

Perineal

128 49, 128 25B, A61H 102

Patent

active

044922221

ABSTRACT:
A knee exerciser cyclically flexes a patient's knee by alternately extending and retracting a leg support having one end disposed behind the knee. The leg support is hinged at one end to a thigh support and is fixed at its other end to a motor assembly. The motor assembly pivots relative to a frame. The other end of the thigh support is also pivotally secured to the frame. The leg support includes a tubular member secured to the thigh support hinge and a screw which is rotatably driven by the motor and is threadedly engaged in the tube. Rotation of the screw extends and retracts the leg support, thereby moving the leg/thigh hinge to cyclically flex the knee joint. The motor is controllable to set the limit point of the flexure cycle and to control the speed of the motor.

REFERENCES:
patent: 2696206 (1954-12-01), Bierman
patent: 2871853 (1959-02-01), Demarest et al.
patent: 3473528 (1969-10-01), Mishkin et al.
patent: 4323060 (1982-04-01), Pecheux

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