Pedicle screw with a closure device for securing a rod for stabilization of the vertebral column
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United States of America Patent
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-
Jul 17, 2012
Grant Date -
Jul 2, 2009
app pub date -
Dec 24, 2008
filing date -
Dec 31, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pedicle screw with a closure device for securing a rod for stabilization of the vertebral column comprises a screw-in part with a head part, a U-shaped recess in the head part., in which recess the rod is held by the closure device. The closure device comprises a yoke-shaped locking element, which has a collar with a projection on each of the two opposite end regions. One groove is provided on each of the two arms in such a way that the locking element is rotatably placed on the arms. The projections are inserted in the grooves to achieve locking position. A tension screw is screwed into the locking element and rotatably connected to a tension element inserted between the arms, and, in the locked state of the locking element, is able to be tensioned, by means of the tension screw, against the rod inserted in the recess.
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