Poly-axial bone screw mating seat
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United States of America Patent
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Jan 11, 2011
Grant Date -
Oct 4, 2007
app pub date -
Oct 17, 2006
filing date -
Mar 20, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention is directed a poly-axial bone securing system including a bone securing member and a coupling element. The coupling element includes an opening to permit the bone securing member to pass therethrough and a seat for contacting a head portion of the bone securing member. The opening including a discrete number of contact surfaces or points for engaging the head portion of the bone securing member so that discrete frictional or gripping forces may be generated at interface points of each contact surface or point.
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