Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1995-12-29
1997-08-19
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, A61F 238
Patent
active
056583443
ABSTRACT:
A knee prosthesis includes a femoral component, a patella insert, a tibial bearing insert, a tibial tray and a reinforcement pin. The reinforcement pin is constructed such that it includes a ribbed region comprised of one or more circumferentially oriented ribs. The diameter of the ribbed region of the pin exceeds that of the non-ribbed region of the pin. The reinforcement pin is adapted to seat within a bore formed in the tibial bearing insert in an interference fit. A distal portion of the pin protrudes from the inferior surface of the tibial bearing insert and is adapted to fit, in a clearance fit, within a bore formed in a superior surface of the tibial tray.
REFERENCES:
patent: 5007933 (1991-04-01), Sidebotham
Johnson & Johnson Orthopaedics, "P.F.C..RTM. Modular Knee System", 1994.
Johnson & Johnson Orthopaedics, "P.F.C..RTM. Modular Total Knee System", 1992.
Johnson & Johnson Orthopaedics Brochure entitled P.F.C..RTM. Modular Knee System: Research Data and Laboratory Testing, Braintree, MA, 1989 (4 pp).
Black John M.
Isabella David
Johnson & Johnson Professional Inc.
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