Implantable joint prosthesis
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United States of America Patent
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Jan 5, 2010
Grant Date -
Sep 12, 2002
app pub date -
Aug 8, 2001
filing date -
Aug 8, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a surgical implant that provides an artificial diarthroidal-like D joint, suitable for use in replacing any joint, but particularly suitable for use as an intervertebral disc endoprosthesis. The invention contains two rigid opposing shells, each having an outer surface adapted to engage the surfaces of the bones of a joint in such a way that the shells are immobilized by friction between their outer surfaces and the surfaces of the bone. These outer surfaces are sufficiently rough, while the inner surfaces of the shells are relatively smooth. The central body has a shape that cooperates with the shape of the inner surface of the shell so as to provide a range of motion similar to that provided by a healthy joint.
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