Prosthetic foot with longer upper forefoot and shorter lower forefoot
First Claim
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1. A prosthetic foot device, comprising:
- a pair of elongated forefoot members including an upper forefoot member disposed over a lower forefoot member, each forefoot member extending from an attachment section configured to be coupled to a limb of an amputee;
the lower forefoot member extending to a termination point at a ball location of a natural foot and under the upper forefoot member;
the upper forefoot member extending past the termination point of the lower forefoot member to a termination point at a toe location of a natural foot;
the upper forefoot member and the lower forefoot member forming elongated springs that bend under load to store energy and return to an original configuration when load is released to release energy; and
an entire length of the lower forefoot member being parallel to the upper forefoot member with respect to a side view and disposed adjacent the upper forefoot member by less than a thickness of one of the forefoot members, wherein the upper forefoot member is substantially arcuate with curved sections, straight sections or both, and extending
1) rearwardly and downwardly through the attachment section,
2) downwardly through an ankle section positioned at an approximate ankle location of a natural foot,
3) forwardly through an arch section, and
4) forwardly to the termination point at the toe location of a natural foot; and
the lower forefoot member is substantially arcuate with curved sections, straight sections or both, and extending
1) rearwardly and downwardly through the attachment section,
2) downwardly through an ankle section, and
3) forwardly through an arch section under the arch section of the upper forefoot portion to the termination point at the ball location of a natural foot.
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Abstract
The invention provides a prosthetic foot device including an elongated upper forefoot portion extending through an upper attachment section, forwardly through an arch section, and to a toe section positioned at a toe location of a natural foot. The foot device also includes an elongated lower forefoot portion extending through an upper attachment section attached to the attachment section of the upper forefoot portion, and forwardly under the arch section of the upper forefoot portion to a terminal end positioned under the ball location of a natural foot and rearward of the toe section of the upper forefoot portion.
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Citations
19 Claims
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1. A prosthetic foot device, comprising:
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a pair of elongated forefoot members including an upper forefoot member disposed over a lower forefoot member, each forefoot member extending from an attachment section configured to be coupled to a limb of an amputee; the lower forefoot member extending to a termination point at a ball location of a natural foot and under the upper forefoot member; the upper forefoot member extending past the termination point of the lower forefoot member to a termination point at a toe location of a natural foot; the upper forefoot member and the lower forefoot member forming elongated springs that bend under load to store energy and return to an original configuration when load is released to release energy; and an entire length of the lower forefoot member being parallel to the upper forefoot member with respect to a side view and disposed adjacent the upper forefoot member by less than a thickness of one of the forefoot members, wherein the upper forefoot member is substantially arcuate with curved sections, straight sections or both, and extending
1) rearwardly and downwardly through the attachment section,
2) downwardly through an ankle section positioned at an approximate ankle location of a natural foot,
3) forwardly through an arch section, and
4) forwardly to the termination point at the toe location of a natural foot; and
the lower forefoot member is substantially arcuate with curved sections, straight sections or both, and extending
1) rearwardly and downwardly through the attachment section,
2) downwardly through an ankle section, and
3) forwardly through an arch section under the arch section of the upper forefoot portion to the termination point at the ball location of a natural foot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A prosthetic foot device, comprising:
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a) an elongated upper forefoot portion that is substantially arcuate with curved sections, straight sections or both, and extending
1) rearwardly and downwardly through an upper attachment end configured to be coupled to a limb of an amputee,
2) downwardly through an ankle section positioned at an approximate ankle location of a natural foot,
3) forwardly through an arch section, and
4) forwardly to a toe section positioned at a toe location of a natural foot;b) an elongated lower forefoot portion that is substantially arcuate with curved sections, straight sections or both, and extending
1) rearwardly and downwardly through an upper attachment end attached to the upper attachment end of the upper forefoot portion,
2) downwardly through an ankle section, and
3) forwardly through an arch section under the arch section of the upper forefoot portion to a terminal end positioned at a ball location of a natural foot and rearward of the toe section of the upper forefoot;c) the upper forefoot member and the lower forefoot member forming vertically oriented arcs extending in a posterior and anterior direction; d) the upper forefoot portion and the lower forefoot portion forming elongated springs that bend under load to store energy and return to an original configuration when load is released to release energy, with the arch section of the upper forefoot portion displacing towards the ankle section of the upper forefoot portion, and the arch section of the lower forefoot portion displacing towards the ankle section of the lower forefoot portion, under load; and e) the upper and lower forefoot portions being disposed directly adjacent one another with no gap between the upper forefoot member and the lower forefoot member. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A prosthetic foot device, comprising:
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a pair of elongated forefoot members including an upper forefoot member disposed over and directly adjacent a lower forefoot member with no gap between the upper forefoot member and the lower forefoot member, and the forefoot members extending from attachment ends attached together at a common location and configured to be coupled to a limb of an amputee; an entire length of the lower forefoot member being parallel to the upper forefoot member with respect to a side view; the upper forefoot member and the lower forefoot member forming elongated springs that bend under load to store energy and return to an original configuration when load is released to release energy; the lower forefoot member extending to a termination point at a ball location of a natural foot and under the upper forefoot member; and the upper forefoot member extending past the termination point of the lower forefoot member to a termination point at a toe location of a natural foot, wherein the upper forefoot member is substantially arcuate with curved sections, straight sections or both, and extending
1) rearwardly and downwardly through the attachment section,
2) downwardly through an ankle section positioned at an approximate ankle location of a natural foot,
3) forwardly through an arch section, and
4) forwardly to the termination point at the toe location of a natural foot; and
the lower forefoot member is substantially arcuate with curved sections, straight sections or both, and extending
1) rearwardly and downwardly through the attachment section,
2) downwardly through an ankle section, and
3) forwardly through an arch section under the arch section of the upper forefoot portion to the termination point at the ball location of a natural foot.
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Specification