Low profile pedicle screw assembly
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United States of America Patent
Stats
-
Jan 24, 2012
Grant Date -
Oct 2, 2008
app pub date -
May 7, 2008
filing date -
May 25, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pedicle screw and rod assembly is provided which has a low profile in the final position. The pedicle screw includes a screw having a threaded portion and a head portion. A tulip body is positioned on the head portion of the screw. A tulip saddle is coupled to the tulip body and positioned to retain the tulip assembly on the pedicle screw. Wedge members are inserted in between the tulip body and the tulip saddle, causing the saddle to compress and thereby retain a rod within the tulip assembly. Colored wedge members alert a surgeon as to whether the system is in a locked or unlocked state. The top of the tulip assembly is approximately equal in height to, or lower than the rod itself. This provides a low profile pedicle screw and rod assembly since the rod itself will be the uppermost member of the completed assembly.
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