Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Foot
Patent
1996-03-14
1998-09-01
Willse, David H.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Foot
623 53, A61F 266
Patent
active
058005706
ABSTRACT:
The present invention is a lower extremity prosthetic device which includes a modular foot having a heel member and an elongate, dorsal midfoot member configured for detachable combination via a coupling mechanism. The heel member is formed substantially from a first structural material of a first modulus of elasticity. The midfoot member is formed substantially from a second structural material having a second modulus of elasticity less than the first modulus of elasticity. The midfoot member extends arcuately forwardly from the heel member, and is configured with differentially flexible lateral and medial elements which provide the device with flexion characteristics similar to those of a natural foot. An elongate plantar member extends between the heel member and a forward end of the midfoot member, the plantar member being formed substantially from a third material having a third modulus of elasticity which is lower than the second modulus of elasticity. The plantar member includes a toe section and a sub-arch section. The sub-arch section extends arcuately between the heel member and the forward end of the midfoot member. The toe section extends forwardly from the sub-arch section.
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