Accession Number : AD0164152

Title :   Variable Friction Knee Unit with an Improved Swing Phase Control of Artificial Legs.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Ashbelle,Charles C. ; Arrigo,Michael F. ; Hunting,Kenneth E. ; Helmuth,Gene R.

Report Date : 04 JUL 1972

Pagination or Media Count : 8

Abstract : The invention is a variable friction knee unit that applies independent braking forces at different times to the swing phase of an artificial leg during walking which simulates the actions and efficiencies of the quadriceps and hamstring muscles of the thigh. Two braking modes are applied with an additional continuous braking mode. One operates at each end of swing phase. The second brake is applied a few degrees after the first brake and superimposed over the first brake. Both brakes are applied at each end of the swing phase of the walking cycle. In addition to being operative at the terminus of the swing, the two brakes are engaged at different times and are superimposed over the application of continuous friction so that the deceleration is a stepping function thereby simulating the function of the quadriceps and hamstring muscles of the thigh.

Descriptors :   (*Artificial limbs, *Patents), Brakes, Joints(Physiology), Amputation, Prosthetics

Subject Categories : Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE