Polyaxial pedicle screw having a loosely coupled locking cap
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United States of America Patent
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-
Sep 5, 2000
Grant Date -
N/A
app pub date -
Jun 12, 1998
filing date -
Jun 12, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A polyaxial pedicle screw for use with rod implant apparatus includes a rod receiving body, a screw having a curvate head, a compression element, and a means for loosely and reversibly maintaining a coupled relationship between the compression element and the screw head during angulation thereof relative to the rod receiving body, while still permitting compressive locking of the assembly in a specific orientation by means of a compressive force applied by a rod onto the compression element and the head of the screw.
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