Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1989-11-22
1991-09-10
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, A61F 242
Patent
active
050470590
ABSTRACT:
Prosthesis made up of two components of which one is in the form of a cap comprising a dorsal part connecting two wings of which the palmar edges are asymmetrical on the dorsal side relative to the axis of the diaphysis. The second component comprises a head which fits into the cap and a collar having two concave cut-ins which cooperate with the edges of the cap during flexion. The palmar edges of the cap form a multicentric convex around which the second articulation component turns. In a preferred embodiment, the cap of the first component has a transverse pin affixed therein and the head of the second component has an open portion which provides the head with a hook-like form. The opening in the head acts in conjunction with the pin to prevent the accidental uncoupling of the two components when a postero-anterior force is placed on the prosthesis while simultaneously allowing for articulation of the prosthesis components.
REFERENCES:
patent: 3506982 (1970-04-01), Steffee
patent: 3694821 (1972-10-01), Moritz
patent: 3990118 (1976-01-01), Strickland et al.
patent: 4304011 (1981-12-01), Whelan III
patent: 4865606 (1989-09-01), Rehder
Apley Richard J.
Reichard Lynne A.
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