WO2008112576A3 - Methods and apparatus for detecting misapplied optical sensors - Google Patents

Methods and apparatus for detecting misapplied optical sensors Download PDF

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Publication number
WO2008112576A3
WO2008112576A3 PCT/US2008/056293 US2008056293W WO2008112576A3 WO 2008112576 A3 WO2008112576 A3 WO 2008112576A3 US 2008056293 W US2008056293 W US 2008056293W WO 2008112576 A3 WO2008112576 A3 WO 2008112576A3
Authority
WO
WIPO (PCT)
Prior art keywords
methods
misapplied
detecting
optical sensors
absorption
Prior art date
Application number
PCT/US2008/056293
Other languages
French (fr)
Other versions
WO2008112576A9 (en
WO2008112576A2 (en
Inventor
Jr Clark R Baker
Brian Earp
Original Assignee
Nellcor Puritan Bennett Llc
Jr Clark R Baker
Brian Earp
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 Llc, Jr Clark R Baker, Brian Earp filed Critical Nellcor Puritan Bennett Llc
Publication of WO2008112576A2 publication Critical patent/WO2008112576A2/en
Publication of WO2008112576A3 publication Critical patent/WO2008112576A3/en
Publication of WO2008112576A9 publication Critical patent/WO2008112576A9/en

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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
    • A61B5/6843—Monitoring or controlling sensor contact pressure
    • 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
    • A61B5/14551—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 for measuring blood gases
    • 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
    • A61B5/14551—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 for measuring blood gases
    • A61B5/14552—Details of sensors specially adapted therefor

Abstract

Methods and apparatus are described for sensing misplacement of an optical sensor on a patient. A wavelength of light which is particularly subject to absorption by a physiological characteristic of interest is used to compare to a reference to determine if the sensor placement is appropriate, such as to generate accurate readings. In one example, the intensity of a wavelength of light which is subject to absorption by bulk tissue, but less subject to absorption by oxygen in the blood will be detected to evaluate the placement of the sensor.
PCT/US2008/056293 2007-03-09 2008-03-07 Methods and apparatus for detecting misapplied optical sensors WO2008112576A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/716,384 2007-03-09
US11/716,384 US20080221426A1 (en) 2007-03-09 2007-03-09 Methods and apparatus for detecting misapplied optical sensors

Publications (3)

Publication Number Publication Date
WO2008112576A2 WO2008112576A2 (en) 2008-09-18
WO2008112576A3 true WO2008112576A3 (en) 2008-11-06
WO2008112576A9 WO2008112576A9 (en) 2008-12-24

Family

ID=39742339

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/056293 WO2008112576A2 (en) 2007-03-09 2008-03-07 Methods and apparatus for detecting misapplied optical sensors

Country Status (2)

Country Link
US (1) US20080221426A1 (en)
WO (1) WO2008112576A2 (en)

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US8922788B2 (en) 2012-12-22 2014-12-30 Covidien Lp Methods and systems for determining a probe-off condition in a medical device
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Also Published As

Publication number Publication date
WO2008112576A9 (en) 2008-12-24
WO2008112576A2 (en) 2008-09-18
US20080221426A1 (en) 2008-09-11

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