Prosthetic foot having shock absorption
First Claim
1. A prosthetic foot comprising:
- an adaptor element securable to a residual limb;
a foot plate having a heel portion and a toe portion spaced along the length thereof;
a heel spring connected between said adaptor element and said heel portion;
at least one toe spring connected between said adaptor element and said toe portion of said foot plate, wherein said adaptor element is vertically supported by said foot plate via said heel spring and said toe spring and is not directly supported by said footplate; and
wherein at least one of the connection of the heel spring with the adaptor element and the connection of the heel spring with the heel portion of the foot plate is a pivotal connection having a pivot axis.
4 Assignments
0 Petitions
Accused Products
Abstract
A prosthetic foot includes an adapter element securable to a residual limb, a foot plate having a heel portion and a toe portion along the length thereof, at least one toe spring connected between the adapter element and the toe portion of the foot plate, and a heel spring connected between the adapter element and the heel portion. The heel spring may be a leaf spring or a tube type shock absorber. The concave side of the leaf spring exhibits a plurality of transverse ribs. Alternatively, a tubular pylon may have a collar mounted thereon for movement along the length of the pylon. A toe spring and a heel spring extend from the collar to form toe and heel portions of the prosthetic foot. A further heel spring is connected between the heel portion and another end of the pylon, and a non-extensible band extends between the heel portion and the collar. As another alternative, a tubular pylon has one end securable to a residual limb, and a collar is mounted to the pylon for movement along the length of the pylon. At least one toe spring is connected between the collar and the toe portion of a foot plate, while a heel spring is connected between the heel portion of the foot plate and another end of the pylon.
171 Citations
36 Claims
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1. A prosthetic foot comprising:
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an adaptor element securable to a residual limb;
a foot plate having a heel portion and a toe portion spaced along the length thereof;
a heel spring connected between said adaptor element and said heel portion;
at least one toe spring connected between said adaptor element and said toe portion of said foot plate, wherein said adaptor element is vertically supported by said foot plate via said heel spring and said toe spring and is not directly supported by said footplate; and
wherein at least one of the connection of the heel spring with the adaptor element and the connection of the heel spring with the heel portion of the foot plate is a pivotal connection having a pivot axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A prosthetic foot comprising:
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an adaptor element securable to a residual limb;
a foot plate having a heel portion and a toe portion spaced along the length thereof;
at least one toe spring connected between said adaptor element and said toe portion of said foot plate;
a heel spring connected between said adaptor element and said heel portion, wherein said adaptor element is vertically supported by said foot plate via said heel spring and said toe spring and is not directly supported by said footplate, wherein at least one of the connection of the heel spring with the adaptor element and the connection of the heel spring with the heel portion of the foot plate is a pivotal connection; and
a shock absorber connected between said adaptor element and said heel portion. - View Dependent Claims (27, 28, 29, 30)
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31. A prosthetic foot comprising:
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an adaptor element securable to a residual limb;
a foot plate having a heel portion and a toe portion along the length thereof; and
at least one toe spring connected between said adaptor element and said toe portion of said foot plate, wherein said at least one toe spring is a curved leaf spring, and wherein a concave side of the at least one toe spring exhibits a plurality of transverse ribs. - View Dependent Claims (32, 33, 34, 35)
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36. A prosthetic foot comprising:
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an adaptor element securable to a residual limb; and
at least one toe spring clamped to said adaptor element, wherein said at least one toe spring is a curved leaf spring, and wherein a concave side of the at least one toe spring exhibits a plurality of transverse ribs over at least a portion of an unclamped length of said toe spring.
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Specification