DE69932330D1 - Signaldemodulationsverfahren und -anlage in einem pulsoximetriesystem - Google Patents

Signaldemodulationsverfahren und -anlage in einem pulsoximetriesystem

Info

Publication number
DE69932330D1
DE69932330D1 DE69932330T DE69932330T DE69932330D1 DE 69932330 D1 DE69932330 D1 DE 69932330D1 DE 69932330 T DE69932330 T DE 69932330T DE 69932330 T DE69932330 T DE 69932330T DE 69932330 D1 DE69932330 D1 DE 69932330D1
Authority
DE
Germany
Prior art keywords
sequence
pulse
electromagnetic energy
output signal
wavelength
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69932330T
Other languages
English (en)
Inventor
K Diab
M Weber
Ammar Al-Ali
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Masimo Corp
Original Assignee
Masimo Corp
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 Masimo Corp filed Critical Masimo Corp
Application granted granted Critical
Publication of DE69932330D1 publication Critical patent/DE69932330D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7228—Signal modulation applied to the input signal sent to patient or subject; demodulation to recover the physiological signal
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7217—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise originating from a therapeutic or surgical apparatus, e.g. from a pacemaker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/08—Time-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/10—Arrangements for reducing cross-talk between channels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0242—Operational features adapted to measure environmental factors, e.g. temperature, pollution
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
    • A61B2562/0238—Optical sensor arrangements for performing transmission measurements on body tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7232—Signal processing specially adapted for physiological signals or for diagnostic purposes involving compression of the physiological signal, e.g. to extend the signal recording period
DE69932330T 1998-04-10 1999-04-09 Signaldemodulationsverfahren und -anlage in einem pulsoximetriesystem Expired - Lifetime DE69932330D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/058,799 US6229856B1 (en) 1997-04-14 1998-04-10 Method and apparatus for demodulating signals in a pulse oximetry system
PCT/US1999/007825 WO1999052420A1 (en) 1998-04-10 1999-04-09 Method and apparatus for demodulating signals in a pulse oximetry system

Publications (1)

Publication Number Publication Date
DE69932330D1 true DE69932330D1 (de) 2006-08-24

Family

ID=22019000

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69932330T Expired - Lifetime DE69932330D1 (de) 1998-04-10 1999-04-09 Signaldemodulationsverfahren und -anlage in einem pulsoximetriesystem

Country Status (6)

Country Link
US (9) US6229856B1 (de)
EP (2) EP1067861B1 (de)
JP (1) JP4454854B2 (de)
AT (1) ATE332665T1 (de)
DE (1) DE69932330D1 (de)
WO (1) WO1999052420A1 (de)

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US6643530B2 (en) 2003-11-04
US20040152965A1 (en) 2004-08-05
JP2002511291A (ja) 2002-04-16
US20070225582A1 (en) 2007-09-27
ATE332665T1 (de) 2006-08-15
US6229856B1 (en) 2001-05-08
US20160270735A1 (en) 2016-09-22
US8718737B2 (en) 2014-05-06
US20080033265A1 (en) 2008-02-07
US7003339B2 (en) 2006-02-21
US20060161056A1 (en) 2006-07-20
EP1709902A2 (de) 2006-10-11
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US9351673B2 (en) 2016-05-31
JP4454854B2 (ja) 2010-04-21
EP1067861B1 (de) 2006-07-12
US20120253155A1 (en) 2012-10-04
US8150487B2 (en) 2012-04-03
EP1709902A3 (de) 2007-07-25
US20140243627A1 (en) 2014-08-28
US7221971B2 (en) 2007-05-22
US20010002206A1 (en) 2001-05-31
US8185180B2 (en) 2012-05-22

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