Surgical implement detection system
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United States of America Patent
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Aug 31, 2010
Grant Date -
Apr 10, 2003
app pub date -
Oct 8, 2002
filing date -
Oct 10, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Surgical implements used during an operating procedure are detected in human tissue. Markers attached to the surgical implements change their impedance at a preselected frequency in the presence of an electromagnetic field. Each of the markers is thereby provided with signal-identifying characteristics. The signal-identifying characteristics are detected outside the operating room in an accurate, reliable manner. Potential interference with operating room electronic instrumentation is avoided, the possibility of operator error is reduced and system cost and space requirements are substantially lowered.
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