Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1994-04-25
1996-04-16
Prebilic, Paul B.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, 606 62, A61F 242
Patent
active
055078222
ABSTRACT:
A thumb prosthesis includes a trapezial component adapted to be fixed in the trapezium and a metacarpal component adapted to be fixed in the metacarpal bone. The trapezial component has a self-cutting thread adapted to be screwed into the trapezium; a polygonal base, having a conical surface and a neck part and being situated at one end of the self-cutting thread; and a spherical head disposed on the conical surface and extending from the neck part. The metacarpal component has a frustoconical head having a large-diameter end and an opposite, small-diameter end and a geometrical axis; a hemispherical socket provided in the small-diameter end and receiving a surface portion of the spherical head; and a stem extending from the large-diameter end of the frustoconical head. The stem is offset relative to the geometrical axis and has a decreasing triangular cross section with rounded corners as viewed in a direction away from the frustoconical head.
REFERENCES:
patent: 4180871 (1980-01-01), Hamas
patent: 4944758 (1990-07-01), Bekki et al.
patent: 4955916 (1990-09-01), Carignan et al.
patent: 5047059 (1991-09-01), Saffar
patent: 5387244 (1995-02-01), Breard
Bouchon Yves
Dinville Herve
Prebilic Paul B.
Societe dite JBS Societe Anonyme
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