Patent ID: 6086615
Filing Date: 2000-07-11
Classification: A61F

Abstract:
A pylon for a lower limb prosthesis having a leg stump and a prosthetic foot for supporting the weight of a patient, comprising:a first end portion connectable to the leg stump;a second end portion opposing the first end portion and connectable to the prosthetic foot, the second end portion being rotatable and axially movable relative to the first end portion about and along a longitudinal axis of the pylon, respectively;an enclosed compressible volume of fluid coupling the first and second end portions, the compressible volume of fluid supporting and cushioning axial loads along the longitudinal axis of the pylon; anda torsional spring coupled to the first and second end portions, the torsional spring directly resisting relative rotation between the first and second end portions to bias the first and second end portions to a centered position, and the torsional spring allowing unrestricted axial movement between the first and second end portions.