DE602008004224D1 - Rfahren - Google Patents

Rfahren

Info

Publication number
DE602008004224D1
DE602008004224D1 DE602008004224T DE602008004224T DE602008004224D1 DE 602008004224 D1 DE602008004224 D1 DE 602008004224D1 DE 602008004224 T DE602008004224 T DE 602008004224T DE 602008004224 T DE602008004224 T DE 602008004224T DE 602008004224 D1 DE602008004224 D1 DE 602008004224D1
Authority
DE
Germany
Prior art keywords
light
normalization coefficient
response
emitted light
wavelengths
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.)
Active
Application number
DE602008004224T
Other languages
English (en)
Inventor
Can Cinbis
James K Carney
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.)
Medtronic Inc
Original Assignee
Medtronic 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 Medtronic Inc filed Critical Medtronic Inc
Publication of DE602008004224D1 publication Critical patent/DE602008004224D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/145Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455Measuring 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
    • A61B5/1459Measuring 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 invasive, e.g. introduced into the body by a catheter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/02Detecting, 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
    • A61B5/024Detecting, measuring or recording pulse rate or heart rate
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/145Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14542Measuring 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 blood gases
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316Modalities, i.e. specific diagnostic methods
    • A61B5/318Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346Analysis of electrocardiograms
    • A61B5/349Detecting specific parameters of the electrocardiograph cycle
    • A61B5/361Detecting fibrillation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316Modalities, i.e. specific diagnostic methods
    • A61B5/318Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346Analysis of electrocardiograms
    • A61B5/349Detecting specific parameters of the electrocardiograph cycle
    • A61B5/363Detecting tachycardia or bradycardia
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61NELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00Electrotherapy; Circuits therefor
    • A61N1/18Applying electric currents by contact electrodes
    • A61N1/32Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/38Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
    • A61N1/39Heart defibrillators
    • A61N1/3925Monitoring; Protecting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/72Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7207Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
    • A61B5/7214Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts using signal cancellation, e.g. based on input of two identical physiological sensors spaced apart, or based on two signals derived from the same sensor, for different optical wavelengths
DE602008004224T 2007-02-28 2008-02-28 Rfahren Active DE602008004224D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89203307P 2007-02-28 2007-02-28
PCT/US2008/055337 WO2008106608A1 (en) 2007-02-28 2008-02-28 Implantable tissue perfusion sensing system and method

Publications (1)

Publication Number Publication Date
DE602008004224D1 true DE602008004224D1 (de) 2011-02-10

Family

ID=39406126

Family Applications (2)

Application Number Title Priority Date Filing Date
DE602008004225T Active DE602008004225D1 (de) 2007-02-28 2008-02-28
DE602008004224T Active DE602008004224D1 (de) 2007-02-28 2008-02-28 Rfahren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE602008004225T Active DE602008004225D1 (de) 2007-02-28 2008-02-28

Country Status (5)

Country Link
US (6) US8038626B2 (de)
EP (5) EP2131727B1 (de)
AT (3) ATE530111T1 (de)
DE (2) DE602008004225D1 (de)
WO (5) WO2008106597A1 (de)

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Also Published As

Publication number Publication date
EP2131726A1 (de) 2009-12-16
ATE493064T1 (de) 2011-01-15
US20080208020A1 (en) 2008-08-28
US8170650B2 (en) 2012-05-01
US20080208021A1 (en) 2008-08-28
EP2131725A1 (de) 2009-12-16
WO2008106597A1 (en) 2008-09-04
WO2008106612A1 (en) 2008-09-04
WO2008106599A1 (en) 2008-09-04
WO2008106609A1 (en) 2008-09-04
US8090432B2 (en) 2012-01-03
US9636059B2 (en) 2017-05-02
EP2136700A1 (de) 2009-12-30
WO2008106608A1 (en) 2008-09-04
EP2136700B1 (de) 2012-05-16
US20130018233A1 (en) 2013-01-17
ATE493063T1 (de) 2011-01-15
EP2131724B1 (de) 2012-05-16
US20080208067A1 (en) 2008-08-28
EP2131726B1 (de) 2010-12-29
EP2131724A1 (de) 2009-12-16
ATE530111T1 (de) 2011-11-15
US8886465B2 (en) 2014-11-11
EP2131727A1 (de) 2009-12-16
US20080208269A1 (en) 2008-08-28
US8038626B2 (en) 2011-10-18
EP2131727B1 (de) 2011-10-26
US20080208066A1 (en) 2008-08-28
US8165662B2 (en) 2012-04-24
DE602008004225D1 (de) 2011-02-10
EP2131725B1 (de) 2010-12-29

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