Method and apparatus for noninvasive glucose concentration estimation through near-infrared spectroscopy
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United States of America Patent
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Issued Date -
May 19, 2005
app pub date -
Oct 21, 2004
filing date -
Mar 7, 2003
priority date (Note) -
Abandoned
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Abstract
A near-infrared spectrometer-based analyzer attaches continuously or semi-continuously to a human subject and is used to collect spectral measurements of a tissue sample. The spectral readings are used to estimate a biological parameter in the sampled tissue noninvasively, such as glucose concentration. The preferred apparatus is a near-infrared analyzer that includes a base module and a sample module connected together with a communication bundle. The base module contains the bulk of the analyzer, such as a spectrograph and a central processing unit with an algorithm used for converting the optical signal into a glucose concentration. The sample module is typically in a smaller module that interfaces to a tissue sample. The sample module is preferably handheld and provides minimal sampling distortion due to heat or pressure.
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