WO2004104644A3 - Method of sample control and calibration adjustment for use with a noninvasive analyzer - Google Patents

Method of sample control and calibration adjustment for use with a noninvasive analyzer Download PDF

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Publication number
WO2004104644A3
WO2004104644A3 PCT/US2004/016064 US2004016064W WO2004104644A3 WO 2004104644 A3 WO2004104644 A3 WO 2004104644A3 US 2004016064 W US2004016064 W US 2004016064W WO 2004104644 A3 WO2004104644 A3 WO 2004104644A3
Authority
WO
WIPO (PCT)
Prior art keywords
noninvasive
sample control
calibration adjustment
noninvasive analyzer
analyzer
Prior art date
Application number
PCT/US2004/016064
Other languages
French (fr)
Other versions
WO2004104644B1 (en
WO2004104644A2 (en
Inventor
Timothy L Ruchti
Kevin H Hazen
Thomas B Blank
Original Assignee
Sensys Medical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/911,588 external-priority patent/US6115673A/en
Priority claimed from US09/563,782 external-priority patent/US6415167B1/en
Priority claimed from US09/630,201 external-priority patent/US6871169B1/en
Priority claimed from US10/170,921 external-priority patent/US7206623B2/en
Priority claimed from US10/384,023 external-priority patent/US7010336B2/en
Application filed by Sensys Medical Inc filed Critical Sensys Medical Inc
Priority to EP04752964A priority Critical patent/EP1626656A4/en
Publication of WO2004104644A2 publication Critical patent/WO2004104644A2/en
Publication of WO2004104644A3 publication Critical patent/WO2004104644A3/en
Publication of WO2004104644B1 publication Critical patent/WO2004104644B1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/274—Calibration, base line adjustment, drift correction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1495—Calibrating or testing of in-vivo probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light

Abstract

A method and apparatus for easing the use of an optically based noninvasive analyzer is presented. More particularly, a simplified algorithm is used that removes the daily requirement of collecting and using a noninvasive spectrum to update a calibration model. In another embodiment, a guide is used to substantially reduce variation in sample probe placement in relation to a skin tissue sampling site, resulting in the ability to maintain calibration performance with the use of a reference anaiyte concentration, with or without the use of a reference spectrum collected nearby in time.
PCT/US2004/016064 1997-08-14 2004-05-20 Method of sample control and calibration adjustment for use with a noninvasive analyzer WO2004104644A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04752964A EP1626656A4 (en) 1997-08-14 2004-05-20 Method of sample control and calibration adjustment for use with a noninvasive analyzer

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US08/911,588 US6115673A (en) 1997-08-14 1997-08-14 Method and apparatus for generating basis sets for use in spectroscopic analysis
US09/563,782 US6415167B1 (en) 2000-05-02 2000-05-02 Fiber optic probe placement guide
US61078900A 2000-07-06 2000-07-06
US09/630,201 US6871169B1 (en) 1997-08-14 2000-08-01 Combinative multivariate calibration that enhances prediction ability through removal of over-modeled regions
US10/170,921 US7206623B2 (en) 2000-05-02 2002-06-12 Optical sampling interface system for in vivo measurement of tissue
US10/384,023 US7010336B2 (en) 1997-08-14 2003-03-07 Measurement site dependent data preprocessing method for robust calibration and prediction
US47261303P 2003-05-21 2003-05-21
US60/472,613 2003-05-21
US10/849,422 US7383069B2 (en) 1997-08-14 2004-05-18 Method of sample control and calibration adjustment for use with a noninvasive analyzer
US10/849,422 2004-05-18

Publications (3)

Publication Number Publication Date
WO2004104644A2 WO2004104644A2 (en) 2004-12-02
WO2004104644A3 true WO2004104644A3 (en) 2005-03-24
WO2004104644B1 WO2004104644B1 (en) 2005-05-19

Family

ID=34069497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/016064 WO2004104644A2 (en) 1997-08-14 2004-05-20 Method of sample control and calibration adjustment for use with a noninvasive analyzer

Country Status (3)

Country Link
US (2) US7383069B2 (en)
EP (1) EP1626656A4 (en)
WO (1) WO2004104644A2 (en)

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EP1626656A4 (en) 2008-04-30
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