Bone stabilization system including multi-directional threaded fixation element
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United States of America Patent
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Mar 15, 2011
Grant Date -
Apr 19, 2007
app pub date -
Mar 20, 2006
filing date -
Sep 19, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A bone fixation system includes a plate and a set of fixation locking screws. The plate defines a set of locking screw holes each having an internal thread. Each respective locking screw has a head with an external structure that is adapted to self-tap into the internal thread of a given locking screw hole to secure the respective first-type fixation locking screw at an surgeon-directed angle relative to the plate. This angle is defined during forcible insertion and rotation of the respective locking screw into the given screw hole. The system may also include unidirectional locking screws. In a preferred embodiment the plate and first-type of screw are made of different metals, with the plate made of titanium alloy and the screw made of cobalt chrome alloy.
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