Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Foot
Patent
1989-08-15
1991-04-16
Green, Randall L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Foot
A61F 266
Patent
active
050079387
ABSTRACT:
Within its plantar area, the artificial foot for a leg prosthesis is provided with a plate-shaped reinforcing member (10) embedded in the molded foot part. The member 10 includes two superimposed upper and lower leaf springs (15a, 15b) possessing different lengths, between which a carbon fiber-reinforced plastic leaf spring (18) is disposed extending. The latter extends into the ball of the foot area and is offset at the front end. Sliding inserts (17a, 17b) of polyethylene and each face of the plastic leaf spring and between the upper and lower leaf springs produce a constant metatarsal elasticity even during continuous stress.
REFERENCES:
patent: 2475372 (1949-07-01), Catranis
patent: 3890650 (1975-06-01), Prahl
patent: 4328594 (1982-05-01), Campbell et al.
patent: 4721510 (1988-01-01), Cooper et al.
patent: 4892553 (1990-01-01), Prahl
Green Randall L.
IPOS GmbH & Co. KG
Willse David H.
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