Patent ID: 6240306
Filing Date: 2001-05-29
Classification: A61B

Abstract:
A method for non-invasive spectroscopic measurement of analytes, said method comprising the steps of:providing a means for irradiating tissue with infrared energy;providing an output element, said output element operatively connected to a means for measuring a spectrum;providing a means for increasing the rate of equilibration of analyte concentration between tissue compartments, said tissue compartments including vascular and non-vascular compartments;activating said means for increasing the rate of equilibration of analyte concentration and allowing time for sufficient equilibration of analyte concentration between tissue compartments;irradiating tissue including said compartments with said infrared energy so that there is differential absorption of said infrared energy in said tissue; andcollecting infrared energy exiting said tissue through said output element and quantifying said infrared energy with said means for measuring a spectrum.