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Publication numberWO2003077761 A1
Publication typeApplication
Application numberPCT/JP2003/003247
Publication date25 Sep 2003
Filing date18 Mar 2003
Priority date18 Mar 2002
Publication numberPCT/2003/3247, PCT/JP/2003/003247, PCT/JP/2003/03247, PCT/JP/3/003247, PCT/JP/3/03247, PCT/JP2003/003247, PCT/JP2003/03247, PCT/JP2003003247, PCT/JP200303247, PCT/JP3/003247, PCT/JP3/03247, PCT/JP3003247, PCT/JP303247, WO 03077761 A1, WO 03077761A1, WO 2003/077761 A1, WO 2003077761 A1, WO 2003077761A1, WO-A1-03077761, WO-A1-2003077761, WO03077761 A1, WO03077761A1, WO2003/077761A1, WO2003077761 A1, WO2003077761A1
InventorsShunji Egawa
ApplicantCitizen Watch Co., Ltd.
Export CitationBiBTeX, EndNote, RefMan
External Links: Patentscope, Espacenet
Blood analyzer
WO 2003077761 A1
Abstract
A blood analyzer for measuring blood hemoglobin concentrations serving as indications in diagnosing diabetes or controlling blood glucose level. From characteristic curves showing the molar absorption coefficient ratios of three hemoglobin components including HbAlc-O2, Hb-O2 and Hb-CO, the wavelength at which the absorbance ratio of each component attains a peak or the wavelength at which the absorbance ratio of each component attains the maximum level is selected. Then the composition ratio of the hemoglobin components is calculated based on the molar absorption coefficients of the hemoglobin components at these wavelengths and the absorbances of a biological tissue at these wavelengths. Thus, the concentrations of the hemoglobin components are indicated non-invasively.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
WO2001016577A1 *31 Aug 20008 Mar 2001Cme Telemetrix Inc.Method for determination of analytes using nir, adjacent visible spectrum and discrete nir wavelengths
JP2001212114A * Title not available
JP2002085385A * Title not available
JP2002202258A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
WO2013104629A1 *8 Jan 201318 Jul 2013Kaptalia MonitoringOximeter
EP2476369A1 *26 Mar 200818 Jul 2012Masimo Laboratories, Inc.Multiple wavelength optical sensor
US896547111 Feb 201324 Feb 2015Cercacor Laboratories, Inc.Tissue profile wellness monitor
US916799518 Mar 201427 Oct 2015Cercacor Laboratories, Inc.Physiological parameter confidence measure
US924166211 Dec 201326 Jan 2016Cercacor Laboratories, Inc.Configurable physiological measurement system
US93516752 Dec 201431 May 2016Cercacor Laboratories, Inc.Noninvasive multi-parameter patient monitor
US954969621 Sep 201524 Jan 2017Cercacor Laboratories, Inc.Physiological parameter confidence measure
US975044329 Aug 20145 Sep 2017Cercacor Laboratories, Inc.Multiple wavelength sensor emitters
Classifications
International ClassificationG01N21/359, G01N21/3577, G01N21/35, G01N21/27, A61B5/00, G01N33/72, A61B5/145, A61B5/1455
Cooperative ClassificationA61B5/14546, A61B5/1455, A61B5/6838, A61B5/6826, A61B2560/0462, A61B5/14532
European ClassificationA61B5/145G, A61B5/1455, A61B5/68B2J1, A61B5/68B3L, A61B5/145P
Legal Events
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25 Sep 2003AKDesignated states
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