Direct current stimulation of spinal interbody fixation device
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United States of America Patent
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Sep 18, 2001
Grant Date -
N/A
app pub date -
Jan 29, 1999
filing date -
Jan 29, 1999
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A spinal fusion stimulator comprising an interbody fusion cage or other interbody fixation device adapted to be implanted in the intervertebral disc space of a patient's spine, the interbody fusion cage in the preferred embodiment having a hollow body with internal and external conductive surfaces. The stimulator includes a constant current generator connected to the interbody fusion cage and set to provide a DC current effective to produce a surface current density of at least 1 .mu.A/cm.sup.2 in the interbody fusion cage when implanted.
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