Method for determination of analytes using nir, adjacent...

Details Method for determination of analytes using nir, adjacent... Method for determination of analytes using nir, adjacent...

G - Physics

01

N

G01N 21/35 (2006.01) A61B 5/00 (2006.01) G01N 21/31 (2006.01)

Patent

CA 2383725

Described is a method for measuring the concentration of a blood constituent within a body part (80) of a living subject which comprises irradiating a body part of the subject with a continuum of a broad spectrum of radiation in adjacent and near infrared range of the electomagnetic spectrum; collecting the band of radiation after the radiation has been directed onto the part; dispersing the continuum of collected radiation into a dispersed spectrum of component wavelengths onto a detector (120) the detector taking measurements of at least one of transmitted or reflected radiation from the collected radiation; and transferring the measurements to a processor (300), and then measuring the same kind of absorbance or reflectance with respect to one or more a discrete wavelengths of radiation from the longer near infrared range and using the measurements to calculate the concentration of the constituent.

L'invention porte sur un procédé de mesure de la concentration d'un constituant sanguin dans une partie (80) du corps d'un être vivant. Ce procédé consiste à irradier une partie du corps du patient avec un large spectre continu de rayonnement dans une gamme d'infrarouges adjacents et proches du spectre électromagnétique; recueillir la bande de rayonnement après irradiation de la partie du corps; disperser le rayonnement continu recueilli dans un spectre dispersé de longueurs d'onde de composants sur un détecteur (120) qui prend les mesures d'au moins un rayonnement émis ou réfléchi à partir du rayonnement recueilli; et transférer ces mesures vers le processeur (300); puis mesurer le même type d'absorbance ou réflectance par rapport à une ou plusieurs longueurs d'onde distinctes et utiliser ces mesures pour évaluer la concentration du constituant.

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