Patent ID: 7828856
Filing Date: 2010-11-09
Classification: A61F

Abstract:
1. A prosthesis system for a human leg comprising: an upper portion configured for coupling with the human leg; a lower portion configured for coupling with an appendage; a joint portion, the upper portion hingedly coupled to the lower portion via the joint portion such that the lower portion and the upper portion are pivotally movable with respect to one another between an extended state and a bent state; and an elongated elastic cord member comprising an elastic middle portion between first and second end retaining portions of a harder material than the elastic middle portion, the first end retaining portion coupled to a first retainer positioned on the upper portion and the second end retaining portion coupled to a second retainer positioned on the lower portion, wherein at least one of the first and second end retaining portions further comprises a part-spherical retaining ball, and at least one retaining element further comprises a ball retainer that is shaped to accept the corresponding part-spherical retaining ball end portion of the elastic cord member.