WO2002036197A3 - Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart - Google Patents

Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart Download PDF

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Publication number
WO2002036197A3
WO2002036197A3 PCT/US2001/047663 US0147663W WO0236197A3 WO 2002036197 A3 WO2002036197 A3 WO 2002036197A3 US 0147663 W US0147663 W US 0147663W WO 0236197 A3 WO0236197 A3 WO 0236197A3
Authority
WO
WIPO (PCT)
Prior art keywords
source impedance
signal
cardiac electrical
measuring
electrical signal
Prior art date
Application number
PCT/US2001/047663
Other languages
French (fr)
Other versions
WO2002036197A2 (en
Inventor
Malcolm J Begemann
Willem Boute
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
Priority to DE60130132T priority Critical patent/DE60130132T2/en
Priority to EP01990966A priority patent/EP1331968B1/en
Publication of WO2002036197A2 publication Critical patent/WO2002036197A2/en
Publication of WO2002036197A3 publication Critical patent/WO2002036197A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/362—Heart stimulators
    • A61N1/37—Monitoring; Protecting
    • A61N1/3702—Physiological parameters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/362—Heart stimulators
    • A61N1/365—Heart stimulators controlled by a physiological parameter, e.g. heart potential
    • A61N1/36514—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by a physiological quantity other than heart potential, e.g. blood pressure
    • A61N1/36521—Heart stimulators controlled by a physiological parameter, e.g. heart potential controlled by a physiological quantity other than heart potential, e.g. blood pressure the parameter being derived from measurement of an electrical impedance

Abstract

A method of measuring a source impedance of at least one cardiac electrical signal in a mammalian heart is provided. A first amplifier system is operated. A first signal from a chamber of the heart is received. The first signal is passed through a first amplifier. A second amplifier system is then operated. A second signal from the chamber of the heart is received. The second signal is passed through a second amplifier. Finally, the source impedance of at least one cardiac electrical signal is calculated. The source impedance is based on the amplified first signal and the amplified second signal.
PCT/US2001/047663 2000-11-06 2001-11-06 Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart WO2002036197A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE60130132T DE60130132T2 (en) 2000-11-06 2001-11-06 METHOD AND SYSTEM FOR MEASURING A SOURCE IMPEDANCE OF AT LEAST ONE ELECTRONIC HEART SIGNAL OF ANIMALS
EP01990966A EP1331968B1 (en) 2000-11-06 2001-11-06 Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/705,806 2000-11-06
US09/705,806 US6629931B1 (en) 2000-11-06 2000-11-06 Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart

Publications (2)

Publication Number Publication Date
WO2002036197A2 WO2002036197A2 (en) 2002-05-10
WO2002036197A3 true WO2002036197A3 (en) 2003-01-23

Family

ID=24835024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/047663 WO2002036197A2 (en) 2000-11-06 2001-11-06 Method and system for measuring a source impedance of at least one cardiac electrical signal in a mammalian heart

Country Status (4)

Country Link
US (1) US6629931B1 (en)
EP (1) EP1331968B1 (en)
DE (1) DE60130132T2 (en)
WO (1) WO2002036197A2 (en)

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DE10214459A1 (en) * 2001-04-05 2003-04-30 Univ Ilmenau Tech Arrangement and method for the detection of signals of biological origin
AU2007203300B8 (en) * 2001-04-05 2011-08-18 Neuroconn Gmbh Arrangement and Method for Recording Signals of Biological Origin
US7289851B2 (en) * 2003-12-04 2007-10-30 Medtronic, Inc. Method and apparatus for identifying lead-related conditions using impedance trends and oversensing criteria
US7532928B2 (en) * 2006-02-15 2009-05-12 Biotronik Crm Patent Ag Atrial defibrillator
US8644931B2 (en) * 2008-06-02 2014-02-04 Medtronic, Inc. Impedance variability analysis to identify lead-related conditions
US8126553B2 (en) * 2008-06-02 2012-02-28 Medtronic, Inc. Sensing integrity determination based on cardiovascular pressure
EP2303403B1 (en) 2008-06-02 2016-09-14 Medtronic, Inc. Electrogram storage for suspected non-physiological episodes
US20090299421A1 (en) * 2008-06-02 2009-12-03 Medtronic, Inc. Evaluation of implantable medical device sensing integrity based on evoked signals
WO2009148428A1 (en) * 2008-06-02 2009-12-10 Medtronic, Inc. Electrode lead integrity reports
US7974690B2 (en) * 2008-06-30 2011-07-05 Medtronic, Inc. Lead integrity testing during suspected tachyarrhythmias
US9522277B2 (en) * 2008-07-28 2016-12-20 Medtronic, Inc. Lead integrity testing triggered by sensed signal saturation
US7953488B2 (en) * 2008-07-31 2011-05-31 Medtronic, Inc. Pre-qualification of an alternate sensing configuration
US8078277B2 (en) 2008-10-29 2011-12-13 Medtronic, Inc. Identification and remediation of oversensed cardiac events using far-field electrograms
US10118042B2 (en) 2008-10-31 2018-11-06 Medtronic, Inc. Lead integrity testing triggered by sensed asystole
US8396543B2 (en) * 2010-01-28 2013-03-12 Medtronic, Inc. Storage of data for evaluation of lead integrity
US9132275B2 (en) 2010-11-18 2015-09-15 Cardiac Pacemakers, Inc. Automatic determination of chronotropic incompetence using atrial pacing at rest
US8774909B2 (en) 2011-09-26 2014-07-08 Medtronic, Inc. Episode classifier algorithm
US8437840B2 (en) 2011-09-26 2013-05-07 Medtronic, Inc. Episode classifier algorithm
US9668668B2 (en) 2011-09-30 2017-06-06 Medtronic, Inc. Electrogram summary
US8744560B2 (en) 2011-09-30 2014-06-03 Medtronic, Inc. Electrogram summary
US8886296B2 (en) 2011-10-14 2014-11-11 Medtronic, Inc. T-wave oversensing
US8521281B2 (en) 2011-10-14 2013-08-27 Medtronic, Inc. Electrogram classification algorithm
US9214196B2 (en) * 2012-02-16 2015-12-15 Vital Connect, Inc. System and method for powering a wireless sensor device
US9446247B2 (en) * 2013-05-21 2016-09-20 Mr3 Medical, Llc System and method for stimulating the heart using sub-threshold biphasic stimulation

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US4275737A (en) * 1978-11-06 1981-06-30 Medtronic, Inc. Demand cardiac pacemaker having reduced polarity disparity
US4694830A (en) * 1985-10-04 1987-09-22 Siemens Aktiengesellschaft Heart pacemaker with respiratory signal generation capability
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US5507785A (en) * 1994-12-21 1996-04-16 Intermedics, Inc. Rate responsive cardiac pacemaker with biphasic impedance sensing and method
US5603725A (en) * 1992-09-17 1997-02-18 Biotronik Mess- Und Therapiegeraete Gmbh Ingenieurbuero Berlin Circuit for measuring impredance in the heart

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US6044294A (en) * 1995-12-15 2000-03-28 Pacesetter, Inc. Methods and apparatus for measuring impedance in the body
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US6269264B1 (en) * 1996-12-13 2001-07-31 Pacesetter, Inc. Method for measuring impedance in the body
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Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023046A (en) * 1975-08-28 1977-05-10 Vitatron Medical B.V. Low current drain amplifier incorporating means for minimizing sensitivity drift
US4275737A (en) * 1978-11-06 1981-06-30 Medtronic, Inc. Demand cardiac pacemaker having reduced polarity disparity
US4694830A (en) * 1985-10-04 1987-09-22 Siemens Aktiengesellschaft Heart pacemaker with respiratory signal generation capability
WO1992002274A1 (en) * 1990-08-10 1992-02-20 Medtronic, Inc. Field density sensor for detecting cardiac depolarizations
US5603725A (en) * 1992-09-17 1997-02-18 Biotronik Mess- Und Therapiegeraete Gmbh Ingenieurbuero Berlin Circuit for measuring impredance in the heart
US5480441A (en) * 1994-03-30 1996-01-02 Medtronic, Inc. Rate-responsive heart pacemaker
US5507785A (en) * 1994-12-21 1996-04-16 Intermedics, Inc. Rate responsive cardiac pacemaker with biphasic impedance sensing and method

Also Published As

Publication number Publication date
WO2002036197A2 (en) 2002-05-10
DE60130132T2 (en) 2007-12-13
EP1331968B1 (en) 2007-08-22
US6629931B1 (en) 2003-10-07
EP1331968A2 (en) 2003-08-06
DE60130132D1 (en) 2007-10-04

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