HK1063072A1 - Method and apparatus for improving the accuracy ofnoninvasive hematocrit measurements - Google Patents

Method and apparatus for improving the accuracy ofnoninvasive hematocrit measurements

Info

Publication number
HK1063072A1
HK1063072A1 HK04104183A HK04104183A HK1063072A1 HK 1063072 A1 HK1063072 A1 HK 1063072A1 HK 04104183 A HK04104183 A HK 04104183A HK 04104183 A HK04104183 A HK 04104183A HK 1063072 A1 HK1063072 A1 HK 1063072A1
Authority
HK
Hong Kong
Prior art keywords
ofnoninvasive
accuracy
improving
hematocrit measurements
hematocrit
Prior art date
Application number
HK04104183A
Other languages
English (en)
Inventor
Joseph M Schmitt
Original Assignee
Nellcor Puritan Bennett 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
Application filed by Nellcor Puritan Bennett Inc filed Critical Nellcor Puritan Bennett Inc
Publication of HK1063072A1 publication Critical patent/HK1063072A1/xx

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6825—Hand
    • A61B5/6826—Finger
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • 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
    • A61B5/14535—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 haematocrit
    • 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
    • A61B5/14546—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 analytes not otherwise provided for, e.g. ions, cytochromes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/683—Means for maintaining contact with the body
    • A61B5/6838—Clamps or clips
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/72—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving blood pigments, e.g. haemoglobin, bilirubin or other porphyrins; involving occult blood
    • G01N33/721—Haemoglobin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biophysics (AREA)
  • Veterinary Medicine (AREA)
  • Hematology (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Urology & Nephrology (AREA)
  • Biotechnology (AREA)
  • Cell Biology (AREA)
  • Microbiology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
HK04104183A 2001-03-16 2004-06-10 Method and apparatus for improving the accuracy ofnoninvasive hematocrit measurements HK1063072A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/811,328 US6606509B2 (en) 2001-03-16 2001-03-16 Method and apparatus for improving the accuracy of noninvasive hematocrit measurements
PCT/US2002/007760 WO2002075289A2 (fr) 2001-03-16 2002-03-13 Procede et appareil pour ameliorer la precision de mesures d'hematocrite non effractives

Publications (1)

Publication Number Publication Date
HK1063072A1 true HK1063072A1 (en) 2004-12-10

Family

ID=25206245

Family Applications (1)

Application Number Title Priority Date Filing Date
HK04104183A HK1063072A1 (en) 2001-03-16 2004-06-10 Method and apparatus for improving the accuracy ofnoninvasive hematocrit measurements

Country Status (8)

Country Link
US (1) US6606509B2 (fr)
EP (1) EP1368638B1 (fr)
JP (1) JP4176480B2 (fr)
CA (1) CA2441017C (fr)
DE (1) DE60223787T2 (fr)
ES (1) ES2299558T3 (fr)
HK (1) HK1063072A1 (fr)
WO (1) WO2002075289A2 (fr)

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US20020165439A1 (en) 2002-11-07
EP1368638B1 (fr) 2007-11-28
WO2002075289A3 (fr) 2002-11-21
JP4176480B2 (ja) 2008-11-05
DE60223787T2 (de) 2008-11-27
CA2441017A1 (fr) 2002-09-26
DE60223787D1 (de) 2008-01-10
WO2002075289A2 (fr) 2002-09-26
EP1368638A2 (fr) 2003-12-10
CA2441017C (fr) 2011-07-12
JP2004523320A (ja) 2004-08-05

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