Prosthetic component with pneumatic device for knee articulation

Details Prosthetic component with pneumatic device for knee articulation Prosthetic component with pneumatic device for knee articulation

1996-06-06

1999-05-18

Willse, David H.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Having fluid actuator

623 44, A61F2/64;2/74

Patent

active

059047216

ABSTRACT:
A prosthetic component with a pneumatic device for knee articulation formed of an upper part adapted to support a socket element for a stump of a thigh, and a lower part intended to receive a tube extended by an ankle and foot. The two parts are connected to each other by an assembly of pivoted links forming a deformable prism. Movement of the two parts between two stable positions of complete extension and flexure, about the variable axis of rotation defined by these connections, is controlled by a pneumatic cylinder having an upper chamber and a lower chamber separated by a piston and communicating with each other by an air duct with adjustable flow. In each of the stable positions, the pressure of air in the chambers is greater than 1 bar and is preferably between 4 and 7 bar.

REFERENCES:
patent: 3474466 (1969-10-01), Collins

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