Disk prosthesis for cervical vertebrae with controlled clearance
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United States of America Patent
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Jun 13, 2006
Grant Date -
Dec 30, 2004
app pub date -
Sep 30, 2003
filing date -
Jun 26, 2003
priority date (Note) -
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Abstract
A disk prosthesis includes first and second plates (2, 3) to be fixed on neighboring cervical vertebrae and an articulation arrangement (7) inserted between the two plates in a superposed position. The articulation arrangement allows for flexion-tension movements in a sagittal plane (S) according to a limited clearance, lateral inflexion movements in a plane perpendicular to the sagittal plane (S) according to limited angular clearance, and relative rotation movements between the first and second plates according to a limited angular clearance. The first and second plates are assembled to form a prosthesis of a single piece.
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