Fiber optic analyte sensor with integrated in situ total pressure correction
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United States of America Patent
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Apr 19, 2016
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app pub date -
Dec 23, 2014
filing date -
Dec 23, 2014
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Abstract
A fiber optic analyte sensing needle employing an analyte-partial-pressure-sensitive photoluminescent probe, characterized by (i) a void volume channel extending axially along the length of the lumen between the inner surface of the tube and the outer surface of the fiber optic filament, and (ii) a total pressure sensor in pressure communication with the distal tip of the needle via the void volume channel, whereby total pressure of a volume sampled by the sensing needle can be routinely measured and used in pressure compensation of analyte-concentration values calculated from the analyte-partial-pressure readings taken from the analyte-partial-pressure-sensitive photoluminescent probe.
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