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US 6,387,134 B1Granted
Prosthetic foot
AssigneeVessa Limited
InventorsJames E. Parker, Peter R. Read
Life of this patent
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Abstract
A prosthetic foot having a spring assembly with an anterior and posterior component, a snubber for limiting the movement of the spring assembly during assembly, and anterior and posterior shock absorbers provided between the components of the spring assembly and snubber. The arrangement of the posterior shock absorber, the spring assembly, and the snubber is such that ambulation results in the generation of a compressive force in the posterior shock absorber during a heel-strike phase and tensile force in the posterior shock absorber during a toe-off phase.
Claims13
A prosthetic foot comprising:
- a spring assembly having an anterior component and a posterior component, the spring assembly including a secondary resiliently flexible member fixedly attached to a keel, and one or more resiliently flexible sole members attached to said secondary flexible member;
- a snubber pivotally connected to said keel for limiting movement of said spring assembly during ambulation;
- and
- anterior and posterior shock absorbers provided between respective components of said spring assembly and said snubber;
- wherein the arrangement of said posterior shock absorber, said spring assembly, and said snubber is such that ambulation results in the generation of a compressive force in said posterior shock absorber during a heel strike phase and a tensile force in said posterior shock absorber during a toe-off phase.
2 more elements
Dependencies are inferred from the claim text.