Method for calibrating a navigation system
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United States of America Patent
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Jun 13, 2017
Grant Date -
Nov 19, 2009
app pub date -
Jul 22, 2009
filing date -
Jun 4, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for electromagnetic navigation of a surgical probe near a metal object. The electromagnetic navigation system includes a transmitter coil array and a shield. The transmitter coil array has a plurality of transmitter coils and is operable to generate the electromagnetic field to navigate the probe. The shield is positioned adjacent the metal object and is operable to shield the metal object from the electromagnetic field generated by the transmitter coil array, such that the shield substantially reduces distortion of the electromagnetic field by the metal object.
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