CA2145591A1 - Selective cardiac activity analysis atrial fibrillation detection system and method and atrial defibrillator utilizing same - Google Patents

Selective cardiac activity analysis atrial fibrillation detection system and method and atrial defibrillator utilizing same

Info

Publication number
CA2145591A1
CA2145591A1 CA002145591A CA2145591A CA2145591A1 CA 2145591 A1 CA2145591 A1 CA 2145591A1 CA 002145591 A CA002145591 A CA 002145591A CA 2145591 A CA2145591 A CA 2145591A CA 2145591 A1 CA2145591 A1 CA 2145591A1
Authority
CA
Canada
Prior art keywords
cardiac
event count
atria
atrial
counting
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.)
Granted
Application number
CA002145591A
Other languages
French (fr)
Other versions
CA2145591C (en
Inventor
Harley White
Joseph M. Bocek
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.)
Cardiac Pacemakers Inc
Original Assignee
Incontrol 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 Incontrol Inc filed Critical Incontrol Inc
Publication of CA2145591A1 publication Critical patent/CA2145591A1/en
Application granted granted Critical
Publication of CA2145591C publication Critical patent/CA2145591C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
    • A61N1/39—Heart defibrillators
    • A61N1/3956—Implantable devices for applying electric shocks to the heart, e.g. for cardioversion
    • 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
    • A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
    • A61N1/39—Heart defibrillators
    • A61N1/395—Heart defibrillators for treating atrial fibrillation

Abstract

An atrial defibrillator applies cardioverting electrical energy to the atria of a human heart in need of cardioversion.
The defibrillator includes an electrode pair and a sense amplifier associated with the atria of the heart for sensing electrical activity of the heart during a plurality of cardiac cycles to provide a cardiac signal. A detector is responsive to the cardiac signal for detecting cardiac events. During each cardiac cycle of the plurality of cardiac cycles, a time for counting is established wherein each time for counting has a total duration less than the duration of its corresponding cardiac cycle. A counter counts the cardiac events detected by the detector during the time for counting of the plurality of cardiac cycles to provide a cardiac event count. A
comparator compares the cardiac event count to a predetermined cardiac event count. If the cardiac event count is greater than the predetermined cardiac event count, the atria are deemed to be in fibrillation and a cardiovertor applies cardioverting electrical energy to the atria to cardiovert the detected atrial fibrillation.
CA002145591A 1994-04-26 1995-03-27 Selective cardiac activity analysis atrial fibrillation detection system and method and atrial defibrillator utilizing same Expired - Fee Related CA2145591C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/233,251 US5522852A (en) 1994-04-26 1994-04-26 Selective cardiac activity analysis atrial fibrillation detection system and method and atrial defibrillator utilizing same
US08/233,251 1994-04-26

Publications (2)

Publication Number Publication Date
CA2145591A1 true CA2145591A1 (en) 1995-10-27
CA2145591C CA2145591C (en) 2001-04-17

Family

ID=22876514

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002145591A Expired - Fee Related CA2145591C (en) 1994-04-26 1995-03-27 Selective cardiac activity analysis atrial fibrillation detection system and method and atrial defibrillator utilizing same

Country Status (2)

Country Link
US (1) US5522852A (en)
CA (1) CA2145591C (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5690681A (en) * 1996-03-29 1997-11-25 Purdue Research Foundation Method and apparatus using vagal stimulation for control of ventricular rate during atrial fibrillation
US5776168A (en) * 1996-04-03 1998-07-07 Medtronic, Inc. EGM recording system for implantable medical device
US5843130A (en) * 1997-03-31 1998-12-01 Masood Akhtar System for delivering atrial defibrillation shocks
US5800497A (en) * 1997-07-17 1998-09-01 Medtronic, Inc. Medical electrical lead with temporarily stiff portion
US5827197A (en) 1997-11-14 1998-10-27 Incontrol, Inc. System for detecting atrial fibrillation notwithstanding high and variable ventricular rates
US6018681A (en) * 1997-12-03 2000-01-25 Incontrol, Inc. Implantable atrial defibrillator having therapy inhibition responsive to atrial cycle length
US6240313B1 (en) * 1999-04-19 2001-05-29 Cardiac Pacemakers, Inc. Cardiac rhythm management system with prevention of double counting of events
US6480741B1 (en) 1999-09-07 2002-11-12 Cardiac Pacemakers, Inc. Heart monitors with robust interval measurements
US6668195B2 (en) 2001-10-30 2003-12-23 Medtronic, Inc. Methods and apparatus for reducing the likelihood of atrial fibrillation
US7330757B2 (en) 2001-11-21 2008-02-12 Cameron Health, Inc. Method for discriminating between ventricular and supraventricular arrhythmias
US7392085B2 (en) 2001-11-21 2008-06-24 Cameron Health, Inc. Multiple electrode vectors for implantable cardiac treatment devices
US7376458B2 (en) 2004-11-29 2008-05-20 Cameron Health, Inc. Method for defining signal templates in implantable cardiac devices
US7477935B2 (en) 2004-11-29 2009-01-13 Cameron Health, Inc. Method and apparatus for beat alignment and comparison
US8014851B2 (en) 2006-09-26 2011-09-06 Cameron Health, Inc. Signal analysis in implantable cardiac treatment devices
US8934971B1 (en) 2007-11-14 2015-01-13 Pacesetter, Inc. Implantable cardiac stimulation device and method that stabilizes ventricular rate during episodes of atrial fibrillation
US8494630B2 (en) 2008-01-18 2013-07-23 Cameron Health, Inc. Data manipulation following delivery of a cardiac stimulus in an implantable cardiac stimulus device
CA2717442C (en) 2008-03-07 2017-11-07 Cameron Health, Inc. Accurate cardiac event detection in an implantable cardiac stimulus device
ES2525691T3 (en) 2008-03-07 2014-12-29 Cameron Health, Inc. Devices to accurately classify cardiac activity
ES2386623T3 (en) 2008-05-07 2012-08-23 Cameron Health, Inc. Devices to accurately classify cardiac activity
US8712523B2 (en) 2008-12-12 2014-04-29 Cameron Health Inc. Implantable defibrillator systems and methods with mitigations for saturation avoidance and accommodation
CN102596310B (en) 2009-06-29 2015-02-25 卡梅伦保健公司 Adaptive confirmation of treatable arrhythmia in implantable cardiac stimulus devices
US8265737B2 (en) * 2009-10-27 2012-09-11 Cameron Health, Inc. Methods and devices for identifying overdetection of cardiac signals
US8744555B2 (en) 2009-10-27 2014-06-03 Cameron Health, Inc. Adaptive waveform appraisal in an implantable cardiac system
US8548573B2 (en) 2010-01-18 2013-10-01 Cameron Health, Inc. Dynamically filtered beat detection in an implantable cardiac device
US8433398B2 (en) 2011-03-10 2013-04-30 Siemens Medical Solutions Usa, Inc. Signal analysis system for heart condition determination
US9277956B2 (en) 2011-11-09 2016-03-08 Siemens Medical Solutions Usa, Inc. System for automatic medical ablation control
CN105208928B (en) 2013-03-11 2018-10-19 卡梅伦保健公司 Implement the equipment of arrhythmia detection double standards
US9579065B2 (en) 2013-03-12 2017-02-28 Cameron Health Inc. Cardiac signal vector selection with monophasic and biphasic shape consideration
US9554714B2 (en) 2014-08-14 2017-01-31 Cameron Health Inc. Use of detection profiles in an implantable medical device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5391185A (en) * 1993-02-22 1995-02-21 Angeion Corporation Atrial cardioverter with ventricular protection

Also Published As

Publication number Publication date
US5522852A (en) 1996-06-04
CA2145591C (en) 2001-04-17

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