Dynamic stabilization device for spine
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United States of America Patent
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Dec 20, 2011
Grant Date -
Feb 19, 2009
app pub date -
Aug 17, 2007
filing date -
Aug 17, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A dynamic stabilization device is disclosed. The device includes a dual spring member comprising an outer spring and an inner spring that have approximately equal working lengths. The dynamic stabilization device is also configured so that the dual spring member does not undergo stresses greater than an effective fatigue limit that is related to a fatigue limit of the spring.
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Family
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