Intervertebral implant comprising a three-part articulation
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United States of America Patent
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Oct 6, 2009
Grant Date -
Feb 16, 2006
app pub date -
Sep 2, 2002
filing date -
Sep 2, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An intervertebral implant including: a central axis, upper and lower terminal parts and a convex joint element. Each of the terminal parts come to rest against the end surfaces of two adjacent vertebras and opposite first and second concave inner surfaces, respectively. The convex joint element is situated between the terminal parts and rests in a sliding manner against the first and second concave inner surfaces of the two terminal parts. The, first concave surface is a partial surface of a first rotationally symmetrical external surface about the axis of rotation transverse to the central axis. The second concave inner surface of a second rotationally symmetrical conical external surface about the axis of rotation transverse to the central axis.
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