Pedicle screw assembly with bearing surfaces
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United States of America Patent
Stats
-
Dec 22, 2009
Grant Date -
Aug 18, 2005
app pub date -
Dec 31, 2004
filing date -
May 2, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A motion interface structure for use with a pedicle screw is provided, the motion interface structure defining a central passage having an internal face. A helical thread is formed on at least a portion of the internal face of the central passage. The motion interface element is designed to cooperate with an upstanding region of a pedicle screw. The upstanding region includes a threaded region that is adapted to threadingly engage the helical thread associated with the motion interface element. The motion interface element may take the form of a spherical element or a universal joint mechanism. The pedicle screw and motion interface element may be incorporated into a spinal stabilization system that includes one or more additional pedicle screw/motion interface element subassemblies. The spinal stabilization system may also include a dynamic stabilizing element that provides clinically efficacious results.
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Family
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Cited Art Landscape
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