Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Leg – Knee
Patent
1986-08-04
1988-07-12
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Leg
Knee
A61F 262
Patent
active
047567120
ABSTRACT:
A knee joint assembly utilized in an above knee prosthesis includes an upper half member, a lower half member, and a locking pin assembly for locking the upper and lower half members together. The upper member has a front face having a lower edge, a center rib which is orthogonal to the front face, and two upper surfaces, one on each side of the center rib. The two upper surfaces are each upwardly sloped from the front to the rear of the upper member when the upper member is locked together with the lower member. The lower member includes a base having a lip protruding horizontally. The lower member also includes two ramps extending parallel to each other and extending vertically from the base. The ramps each have a sloped surface. When the upper and lower members are locked together, the two ramp surfaces contact the two upper surfaces, the front face edge contacts the lip of the base, and the front part of the center rib contacts a part of the base, thereby providing a substantial amount of contact surface between the upper and lower half members.
REFERENCES:
patent: 4111217 (1978-09-01), Victor
patent: 4283800 (1981-08-01), Wilson
patent: 4286353 (1981-09-01), Roche
patent: 4602627 (1986-07-01), Vito
patent: 4602889 (1986-07-01), Mu-Shan
patent: 4614518 (1986-09-01), Lehneis
Apley Richard J.
Orthomedics, Inc.
Prizant James
LandOfFree
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