Optical fiber shape sensing systems
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United States of America Patent
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Nov 1, 2011
Grant Date -
Nov 20, 2008
app pub date -
Apr 18, 2008
filing date -
Apr 20, 2007
priority date (Note) -
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Abstract
A medical instrument system includes an elongate flexible instrument body with an optical fiber substantially encapsulated in a wall of the instrument body, the optical fiber including one or more fiber gratings. A detector is operatively coupled to the optical fiber and configured to detect respective light signals reflected by the one or more fiber gratings. A controller is operatively coupled to the detector, and configured to determine a twist of at least a portion of the instrument body based on detected reflected light signals. The instrument may be a guide catheter and may be robotically or manually controlled.
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