Patent ID: 6206934
Filing Date: 2001-03-27
Classification: A61F

Abstract:
A prosthetic foot for attaching to a socket or pylon of a lower-limb amputee, comprising:a foot plate element having a length approximately equal to the length of a human foot, the foot plate element comprising a resilient material capable of flexing along its length;an ankle plate element having a length substantially shorter than the foot plate element;an ankle block comprising a relatively soft, compressible material sandwiched between the ankle plate element and the foot plate element, the ankle block providing energy storage and support and connection between the foot plate element and the ankle plate element; anda spring element embedded within the ankle block for providing additional energy storage and support, said spring element having a posterior portion configured to compress during heel-strike, and an anterior portion configured to compress during toe-off;whereby the foot plate element, the ankle block, and the spring element flex in a cooperative manner to provide substantially smooth and continuous rollover transition from heel-strike to toe-off.