Intervertebral disk prosthesis
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
Jul 7, 2005
app pub date -
Jun 10, 2004
filing date -
Jan 7, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A cervical disk prosthesis includes a ball and socket joint interposed between opposing plates for attaching to adjacent vertebrae. The bearing plate has a dimension in the frontal plane larger than a corresponding dimension of the upper plate for providing a limit stop for the upper plate, and by its outside face, a bearing surface for a vertebra that is greater than that presented by the second plate. The disk prosthesis has a trapezoidal form in the horizontal plane with the upper and smaller plate having a parallelepiped shape for defining flexion and extension mobility. One of the plates carries an elastic ring about the perimeter for making a shock absorbing contact with the opposing plate.
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