ARTIFICIAL FOOT FOR LOWER EXTREMITY PROSTHESES Russian patent published in 1997 - IPC

FIELD: medicine, in particular, manufacture of prostheses and prosthetics of lower extremities. SUBSTANCE: artificial foot has shock-absorbing device which consists of external housing with fastening unit of crus, internal body with unit for fastening of foot framework and flexible inserts. The latter are made with variable along axis rigidly of material damping in form of deformed wire. In so doing, external housing, internal body and flexible members have parts limiting axial motion. Shock-absorbing devices are installed so that longitudinal axis of internal body forms an acute angle with horizontal plane. Foot nose with hinged transmission mechanism is hinged with foot framework. Traction unit is hinged with body of shock-absorbing device. Transmission mechanism is connected with foot nose, foot framework and lever. Hydraulic damper consisting of body, control valve, separating piston with transmitting holes and check valve, rod with two pistons, is connected by fastening units with foot framework and lever. EFFECT: provision of absorption of rotary motions in three planes and axial loads. 3 cl, 1 dwg