Cervical intervertebral prosthesis
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United States of America Patent
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-
Sep 11, 2007
Grant Date -
Apr 29, 2004
app pub date -
Jan 23, 2003
filing date -
Mar 12, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A cervical intervertebral prosthesis includes two cover plates which are each configured to be connected to adjacent vertebral bodies. At least one of the two cover plates has a toothed portion which faces toward the vertebral body and whose teeth have a steep, ventrally directed flank and a less steep, dorsally directed flank. When the prosthesis is fitted with sufficient pressing between its adjacent vertebral bodies, the combination of the serrated toothed portion and the abutment surface is sufficient to hold the prosthesis securely in the desired position. In many cases this makes it possible to dispense with additional screw fixation. The flange carrying the abutment surface is in this case expediently shortened so that it can be accommodated in a recess of the bone so that the prosthesis does not protrude ventrally beyond the ventral alignment surface of the adjacent vertebral bodies.
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Family
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