Patent ID: 9028559
Filing Date: 2015-05-12
Classification: A61F

Abstract:
1. A vertical suspension system for a prosthetic foot, comprising: a first member having an upper coupling location and a lower coupling location wherein the first member is adapted to be operatively coupled to an amputee's residual leg; a second member having an upper coupling location and a lower coupling location wherein the second member is horizontally spaced from and positioned rearward of the first member and adapted to be coupled to the prosthetic foot; at least one upper leaf spring having a first end portion and a second end portion that are located on opposite ends of the upper leaf spring, wherein the first end portion of the upper leaf spring is coupled to the first member's upper coupling location and the second end portion of the upper leaf spring is coupled to the second member's upper coupling location such that the upper leaf spring extends between the first member and the second member, and at least one of the upper leaf spring's first end portion and second end portion being rotationally fixed to at least one of the first member and the second member; and at least one lower leaf spring having a first end portion and a second end portion that are located on opposite ends of the lower leaf spring, wherein the first end portion of the lower leaf spring is coupled to the first member's lower coupling location and the second end portion of the lower leaf spring is coupled to the second member's lower coupling location such that the lower leaf spring extends between the first member and the second member, and at least one of the lower leaf spring's first end portion and second end portion being rotationally fixed to at least one of the first member and the second member.