Prosthetic foot with two leaf-springs joined at heel and toe
First Claim
Patent Images
1. A prosthetic foot, comprising:
- an attachment member configured to be attached to a stump of an amputee at or above an ankle location;
a pair of elongated forefoot leaf springs oriented one over another and that are flexible to store energy and resilient to return energy and with proximal ends coupled to one another at the attachment member and extending in an arc to distal ends coupled to one another at a toe location; and
a pair of hinge connections each at a different one of the proximal and distal ends of the pair of elongated forefoot leaf springs and each coupling only the pair of forefoot leaf springs together.
6 Assignments
0 Petitions
Accused Products
Abstract
A prosthetic foot includes a pair of elongated forefoot leaf springs with proximal ends coupled to an attachment member and extending in an arc to distal ends with the forefoot leaf springs being oriented with one over another. The pair of forefoot leaf springs has different lengths and is coupled to one another at the proximal and distal ends defining an open, uninterrupted gap between the forefoot leaf springs. A pair of hinge connections can be disposed each at a different one of the proximal and distal ends of the pair of elongated forefoot leaf springs. The pair of forefoot leaf springs together has a non-linear force deflection under loading during gait.
245 Citations
9 Claims
-
1. A prosthetic foot, comprising:
-
an attachment member configured to be attached to a stump of an amputee at or above an ankle location; a pair of elongated forefoot leaf springs oriented one over another and that are flexible to store energy and resilient to return energy and with proximal ends coupled to one another at the attachment member and extending in an arc to distal ends coupled to one another at a toe location; and a pair of hinge connections each at a different one of the proximal and distal ends of the pair of elongated forefoot leaf springs and each coupling only the pair of forefoot leaf springs together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification