Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1993-12-06
1994-11-01
Green, Randall L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 23, 623 18, 623 16, 606 71, 606 72, 606 73, A61F 232, A61F 236, A61F 230, A61F 228
Patent
active
053604520
ABSTRACT:
A system is disclosed for the fixation of a component of an artificial joint for replacing a damaged natural joint. A cup-shaped socket member is formed with a plurality of radially directed through bores, each being threaded adjacent an outer hemispherical surface and each being tapered adjacent an inner hemispherical surface to define a seating surface. A fastener with an elongated shank secures the socket member to a bone and is received through each through bore. The fastener extends between a head at a first end and a tip at a second end. Mounting threads on the shank intermediate the first and second ends are threadedly engaged with the threads in the through bore and a tapered outer surface extending between the mounting threads and the second end is matingly engaged with the seating surface in the bore. The shank between the mounting threads and the tip end may be smooth, or porous coated to encourage bone ingrowth fixation, or have cancellous threads thereon for threaded engagement with the bone, or different combinations of these expedients may be used.
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Engelhardt John
Serbousek Jon
DePuy Inc.
Green Randall L.
Nguyen Dinh X.
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