Spinal connecting members with radiused rigid sleeves and tensioned cords
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United States of America Patent
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N/A
Issued Date -
Feb 2, 2012
app pub date -
Jul 28, 2011
filing date -
Jan 9, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A spinal implant having at least two bone anchors includes a longitudinal connecting member assembly having hard, non-elastic sleeves for attachment to the bone anchors, at least one spacer engaging the bone anchors and the sleeves, and in some embodiments, an end elastic bumper. A cord is initially slidingly received within the rigid sleeves, the spacer and the bumper. The sleeves include a lower radiused surface for direct engagement with a radiused surface of a shank of the cooperating bone anchor. The sleeves include an aperture for receiving a closure top portion for locking the cord against the sleeve, or alternatively receiving a closure top that does not extend into the aperture, the slip or grip option provided by the aperture in each sleeve resulting in an overall connector with variable segmental stiffness.
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Family
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