WO2001087410A3 - Cardiac stimulation devices and methods for measuring impedances associated with the left side of the heart - Google Patents

Cardiac stimulation devices and methods for measuring impedances associated with the left side of the heart Download PDF

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Publication number
WO2001087410A3
WO2001087410A3 PCT/US2001/015520 US0115520W WO0187410A3 WO 2001087410 A3 WO2001087410 A3 WO 2001087410A3 US 0115520 W US0115520 W US 0115520W WO 0187410 A3 WO0187410 A3 WO 0187410A3
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WO
WIPO (PCT)
Prior art keywords
heart
pacing
methods
measuring
location
Prior art date
Application number
PCT/US2001/015520
Other languages
French (fr)
Other versions
WO2001087410A2 (en
Inventor
Kerry Bradley
Gene A Bornzin
Euljoon Park
Mark W Kroll
Original Assignee
Pacesetter 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 Pacesetter Inc filed Critical Pacesetter Inc
Priority to AU2001263108A priority Critical patent/AU2001263108A1/en
Publication of WO2001087410A2 publication Critical patent/WO2001087410A2/en
Publication of WO2001087410A3 publication Critical patent/WO2001087410A3/en

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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
    • A61N1/365—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

Methods of and systems for measuring at least one physiological parameter for assessing a patient's cardiac condition based on left heart impedance measurements are described. Various embodiments establish a current flow through a left side of the heart and measure a voltage between a first location on or in the left side of the heart and a second location within the human body while establishing the current flow. The inventive techniques and systems can be used for, among other things, measuring progression or regression of myocardial failure, dilation, or hypertrophy, pulmonary congestion, myocardial contractility, or ejection fraction. The measured voltage, related to left heart impedance, can be used to monitor patient condition for diagnostic purposes or to adapt pacing or defibrillation therapy. Therapy adaptation can include controlling pacing modes, pacing rates, or interchamber pacing delays, for example.
PCT/US2001/015520 2000-05-15 2001-05-14 Cardiac stimulation devices and methods for measuring impedances associated with the left side of the heart WO2001087410A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001263108A AU2001263108A1 (en) 2000-05-15 2001-05-14 Cardiac stimulation devices and methods for measuring impedances associated withthe left side of the heart

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20431000P 2000-05-15 2000-05-15
US60/204,310 2000-05-15

Publications (2)

Publication Number Publication Date
WO2001087410A2 WO2001087410A2 (en) 2001-11-22
WO2001087410A3 true WO2001087410A3 (en) 2002-03-21

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PCT/US2001/015520 WO2001087410A2 (en) 2000-05-15 2001-05-14 Cardiac stimulation devices and methods for measuring impedances associated with the left side of the heart

Country Status (3)

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US (1) US20020002389A1 (en)
AU (1) AU2001263108A1 (en)
WO (1) WO2001087410A2 (en)

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US8010196B1 (en) 2006-03-31 2011-08-30 Pacesetter, Inc. Tissue characterization using intracardiac impedances with an implantable lead system
US9066662B2 (en) 2007-04-04 2015-06-30 Pacesetter, Inc. System and method for estimating cardiac pressure based on cardiac electrical conduction delays using an implantable medical device
US9113789B2 (en) 2007-04-04 2015-08-25 Pacesetter, Inc. System and method for estimating electrical conduction delays from immittance values measured using an implantable medical device

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US7184821B2 (en) * 2003-12-03 2007-02-27 Regents Of The University Of Minnesota Monitoring thoracic fluid changes
US7184835B2 (en) * 2003-12-12 2007-02-27 Cardiac Pacemakers, Inc. Method and apparatus for adjustable AVD programming using a table
US7215997B2 (en) * 2003-12-22 2007-05-08 Cardiac Pacemakers, Inc. Dynamic device therapy control for treating post myocardial infarction patients
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US7212849B2 (en) * 2004-10-28 2007-05-01 Cardiac Pacemakers, Inc. Methods and apparatuses for arrhythmia detection and classification using wireless ECG
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US7447543B2 (en) * 2005-02-15 2008-11-04 Regents Of The University Of Minnesota Pathology assessment with impedance measurements using convergent bioelectric lead fields
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US9839781B2 (en) 2005-08-22 2017-12-12 Cardiac Pacemakers, Inc. Intracardiac impedance and its applications
US8494618B2 (en) * 2005-08-22 2013-07-23 Cardiac Pacemakers, Inc. Intracardiac impedance and its applications
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US7794404B1 (en) 2006-03-31 2010-09-14 Pacesetter, Inc System and method for estimating cardiac pressure using parameters derived from impedance signals detected by an implantable medical device
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Publication number Priority date Publication date Assignee Title
US8010196B1 (en) 2006-03-31 2011-08-30 Pacesetter, Inc. Tissue characterization using intracardiac impedances with an implantable lead system
US8065005B1 (en) 2006-03-31 2011-11-22 Pacesetter, Inc. Tissue characterization using intracardiac impedances with an implantable lead system
US9066662B2 (en) 2007-04-04 2015-06-30 Pacesetter, Inc. System and method for estimating cardiac pressure based on cardiac electrical conduction delays using an implantable medical device
US9113789B2 (en) 2007-04-04 2015-08-25 Pacesetter, Inc. System and method for estimating electrical conduction delays from immittance values measured using an implantable medical device

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US20020002389A1 (en) 2002-01-03
AU2001263108A1 (en) 2001-11-26
WO2001087410A2 (en) 2001-11-22

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