Intervertebral disk prosthesis
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United States of America Patent
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May 26, 2009
Grant Date -
Oct 19, 2006
app pub date -
Jul 19, 2005
filing date -
Apr 15, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The intervertebral disk prosthesis comprises first and second parts (2, 3) intended to be attached respectively to two adjacent vertebrae, an intermediate part (4) inserted between the first and second parts (2, 3) and comprising articular surfaces (9, 10) that cooperate with respective articular surfaces (6, 8) of the first and second parts (2, 3), and means (11, 12) for coupling the first part (2) and the intermediate part (4). The coupling means (11, 12) are arranged to leave the intermediate part (4) free relative to the first part (2) during a first phase of a tilting movement of the first part (2) relative to the second part (3), but to displace the intermediate part (4) toward an end (E2) of the prosthesis that is opposite to an end (E1) toward which the first part (2) is displaced by tilting relative to the second part (3), during a second phase of the tilting movement of the first part (2).
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