Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1998-01-08
1999-12-21
Milano, Michael J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 238
Patent
active
060043520
ABSTRACT:
The invention is shown by a tibia platform comprising a metallic lower part and different bearing parts made of plastic which can be anchored to one another at a posterior position via an open hinge joint. The bearing part has a guide rib for guiding femur condyles which projects upwards by a height of at least 15 mm above the lowest point of the sliding surfaces. Large lateral forces such as occur in high guide ribs and in varus and valgus positions of the knee can be taken up because of a separate metallic pawls which engages at a horizontal projection of the lower part at a distance "1" away from the hinge joint. The pawl is displaceably journalled with respect to the bearing part and is permanently positionable by means of auxiliary means by an enforced movement into a latched position at the projection.
REFERENCES:
patent: 4714474 (1987-12-01), Brooks
patent: 4795468 (1989-01-01), Hodorek
patent: 4822362 (1989-04-01), Walker
patent: 4944757 (1990-07-01), Martinez
patent: 5007933 (1991-04-01), Sidebotham
patent: 5108442 (1992-04-01), Smith
patent: 5152797 (1992-10-01), Lucman
patent: 5330534 (1994-07-01), Herrington
patent: 5413608 (1995-05-01), Keller
patent: 5645604 (1997-07-01), Schneider
Milano Michael J.
Sulzer Orthopaedie AG
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