Optical sensor configuration for ratiometric correction of glucose measurement
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United States of America Patent
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Apr 15, 2014
Grant Date -
Oct 10, 2013
app pub date -
May 15, 2013
filing date -
Nov 4, 2009
priority date (Note) -
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Abstract
Embodiments of the invention are directed to an optical sensor for detecting glucose. The sensor comprises a chemical indicator system disposed within a gap between the distal end of an optical fiber and an atraumatic tip portion, wherein the optical fiber and atraumatic tip portion are coupled by a coupling member, such as a rod or hypotube or cage that traverses the gap. The sensor further comprises a means for generating and detecting an optical reference signal unrelated to the glucose, such that ratiometric correction of glucose measurements for artifacts in the optical system is enabled.
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