Prosthetic foot with flexible ankle portion
First Claim
Patent Images
1. A keel for a prosthetic foot comprising:
- a monolithic keel body having a longitudinal axis and a length L, wherein the keel body includes a forefoot portion, a heel portion, and an ankle portion extending therebetween;
wherein the ankle portion of the keel body includes a first recess defining a first capture cavity;
a first bumper disposed within the first capture cavity, wherein the first bumper has a central axis that is substantially perpendicular to the longitudinal axis of the keel body in top view and an outer perimeter in side view, and wherein the ankle portion extends about and engages a majority of the outer perimeter of the first bumper in side view; and
a spindle extending from the ankle portion of the keel body and adapted to couple the keel body to an amputee, wherein the spindle includes an annular flange embedded in the ankle portion of the keel body;
wherein the first capture cavity is positioned in the ankle portion between the spindle and the heel portion;
wherein the first bumper is cylindrical and has a diameter between ¼
inch and ¾
inch.
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Abstract
A keel for a prosthetic foot comprises a unitary keel body having a longitudinal axis and a length L. The keel body includes a forefoot portion, a heel portion, and an ankle portion extending therebetween. In addition, the keel comprises a first bumper disposed in a first capture cavity in the ankle portion. The first bumper has a central axis that is substantially perpendicular to the longitudinal axis of the keel body in top view.
76 Citations
22 Claims
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1. A keel for a prosthetic foot comprising:
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a monolithic keel body having a longitudinal axis and a length L, wherein the keel body includes a forefoot portion, a heel portion, and an ankle portion extending therebetween; wherein the ankle portion of the keel body includes a first recess defining a first capture cavity; a first bumper disposed within the first capture cavity, wherein the first bumper has a central axis that is substantially perpendicular to the longitudinal axis of the keel body in top view and an outer perimeter in side view, and wherein the ankle portion extends about and engages a majority of the outer perimeter of the first bumper in side view; and a spindle extending from the ankle portion of the keel body and adapted to couple the keel body to an amputee, wherein the spindle includes an annular flange embedded in the ankle portion of the keel body; wherein the first capture cavity is positioned in the ankle portion between the spindle and the heel portion; wherein the first bumper is cylindrical and has a diameter between ¼
inch and ¾
inch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A prosthetic foot comprising:
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a keel; a cosmesis at least partially disposed about the keel; wherein the keel includes; a monolithic keel body having a longitudinal axis and a length L, wherein the keel body includes a forefoot portion having a toe end, an ankle portion including a semi-spherical dome, and a heel portion having a heel end, wherein the ankle portion of the keel body includes a first recess defining a first capture cavity; wherein the semi-spherical dome defines a portion of an upper surface of the keel; and a rear bumper disposed within the first capture cavity between the dome and the heel end, wherein the rear bumper has a central axis that is substantially perpendicular to the longitudinal axis of the keel body in top view and a radially outer perimeter; wherein the keel body extends about and engages a majority of the outer perimeter of the rear bumper in side view; wherein the rear bumper is cylindrical and has a diameter between ¼
inch and ¾
inch. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification