Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Foot
Patent
1997-08-04
1999-08-31
Willse, David H.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Foot
623 52, A61F 266
Patent
active
059447605
ABSTRACT:
A prosthetic foot, having a forefoot member and a heel member, is comprised of two separate members forming opposite halves of the foot generally about the longitudinal axis of the foot for simulating natural rotation of the toes of a real foot. The forefoot member of the foot forms a resilient arc extending from a fixture member to a toe position and has an attachment portion, a curvilinear spring portion, an arch portion, and a toe portion. The heel member extends between the forefoot member and a heel position and has an attachment portion and a heel portion. The heel member is preferably attached to the forefoot member by wrapping the members with a resin impregnated fibre. The foot preferably has a mating member such as a rib-and-groove type connection between the forefoot and heel members for preventing the forefoot and heel portions from sliding and rotating with respect to each other and thus prevents shear stress from being placed on the fibers holding the members together. The foot has a fixture member for attachment to a socket for receiving a stump of an amputee and may include an angle adjustment mechanism for adjusting the angle of the foot members with respect to the ground. The foot may include a secondary heel member in addition to the heel member, or primary heel member for supporting the primary heel member.
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Roland J. Christensen Family Limited Partnership
Willse David H.
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