CA2046520A1 - Cardiac Pacemaker with Automatic A-V Programming for Optimization of Left Heart A-V Interval - Google Patents

Cardiac Pacemaker with Automatic A-V Programming for Optimization of Left Heart A-V Interval

Info

Publication number
CA2046520A1
CA2046520A1 CA2046520A CA2046520A CA2046520A1 CA 2046520 A1 CA2046520 A1 CA 2046520A1 CA 2046520 A CA2046520 A CA 2046520A CA 2046520 A CA2046520 A CA 2046520A CA 2046520 A1 CA2046520 A1 CA 2046520A1
Authority
CA
Canada
Prior art keywords
interval
pacing
pacemaker
rate
atrial
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
CA2046520A
Other languages
French (fr)
Other versions
CA2046520C (en
Inventor
Raul Chirife
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24500429&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2046520(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2046520A1 publication Critical patent/CA2046520A1/en
Application granted granted Critical
Publication of CA2046520C publication Critical patent/CA2046520C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A61N1/36—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
    • A61N1/368—Heart stimulators controlled by a physiological parameter, e.g. heart potential comprising more than one electrode co-operating with different heart regions
    • 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
    • A61N1/368—Heart stimulators controlled by a physiological parameter, e.g. heart potential comprising more than one electrode co-operating with different heart regions
    • A61N1/3682—Heart stimulators controlled by a physiological parameter, e.g. heart potential comprising more than one electrode co-operating with different heart regions with a variable atrioventricular delay
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2218/00—Aspects of pattern recognition specially adapted for signal processing

Abstract

A dual-chamber AV sequential pacemaker with the capability of automatically adjusting right heart AV interval to optimize left heart AV interval by compensating for pacing-induced inter-atrial and inter-ventricular conduction delays. Depending on the pacing and sensing action, as determined by the patient's native rate, the predetermined threshold rate and intrinsic AV interval, the pacemaker selects the AV interval. Right heart AV interval is adjusted to compensate for the heart's inter-atrial and inter-ventricular delays. Threshold values are previously estimated, using mean values measured using non-invasive techniques. The pacemaker has a dual phase operating mechanism consisting of an analysis phase followed by a pacing phase. The P wave rate is sensed and compared to a predetermined base rate. If the sensed P wave rate is above the baseline, atrial depolarizations will be sensed by the pacemaker and small number (default = 4) of consecutive native AV intervals will be averaged. If this average is less than a predetermined threshold value, the system will continue in the demand mode, sensing P and R waves. If the average is greater than said value, then the ventricle is paced for n number of times the analysis phase (default = 100 cycles), each followed by a short AV delay (Default = 50 ms) that is intended to compensate for the delay introduced in the onset of left ventricular depolarization after pacing the right ventricular apex. When P wave rate is below the predetermined rate, atrial pacing will occur. During the initial analysis phase, the pacemaker AV interval may be extended to a higher value, say 250 ms, to allow measurement of the native AV interval. At least four AV intervals will be averaged to compensate for possible Wenckebach phenomenon. If averaged AV is greater than, say 220 ms, sequential pacing with AV of 160 ms will take place for 100 cardiac cycles. If averaged native AV intervals are less than 220 ms, atrial pacing with ventricular sensing will be continued with the AV interval set at 250 ms for the next 100 cycles. At the end of either 100 cycle period, another 4-beat analyzing phase is started. Both pacemaker phases (analysis and pacing) are programmable. The 4/100 cycle sequence allows rapid pacing mode corrections under situations such as intermittent block due to exercise or other causes. <IMAGE>
CA002046520A 1990-12-07 1991-07-09 Cardiac pacemaker with automatic a-v programming for optimization of left heart a-v interval Expired - Lifetime CA2046520C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/624,047 US5179949A (en) 1990-12-07 1990-12-07 Cardiac pacemaker with automatic a-v programming for optimization of left heart a-v interval
US07/624,047 1990-12-07

Publications (2)

Publication Number Publication Date
CA2046520A1 true CA2046520A1 (en) 1992-06-08
CA2046520C CA2046520C (en) 1997-06-03

Family

ID=24500429

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002046520A Expired - Lifetime CA2046520C (en) 1990-12-07 1991-07-09 Cardiac pacemaker with automatic a-v programming for optimization of left heart a-v interval

Country Status (8)

Country Link
US (1) US5179949A (en)
EP (1) EP0494487B1 (en)
JP (1) JP3548182B2 (en)
AT (1) ATE133572T1 (en)
AU (1) AU646117B2 (en)
CA (1) CA2046520C (en)
DE (1) DE69116846T2 (en)
ES (1) ES2086490T3 (en)

Families Citing this family (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5318595A (en) * 1989-09-25 1994-06-07 Ferek Petric Bozidar Pacing method and system for blood flow velocity measurement and regulation of heart stimulating signals based on blood flow velocity
US5282838A (en) * 1992-06-08 1994-02-01 Cardiac Pacemakers, Inc. Dual chamber cardiac pacemaker employing hysteresis to maximize the number of normally conducted ventricular beats with an optimum A-V delay for paced ventricular beats
SE9202630D0 (en) * 1992-09-14 1992-09-14 Hans Schueller PACEMAKER
US5741308A (en) * 1992-11-13 1998-04-21 Pacesetter, Inc. Dual-chamber implantable pacemaker and method of operating same for automatically setting the pacemaker's AV interval as a function of a natural measured conduction time
US5334220A (en) * 1992-11-13 1994-08-02 Siemens Pacesetter, Inc. Dual-chamber implantable pacemaker having an adaptive AV interval that prevents ventricular fusion beats and method of operating same
US5411530A (en) * 1992-11-13 1995-05-02 Akhtar; Masood Sensing algorithm for anti-tachycardia devices using dual chamber sensing
US5330511A (en) * 1993-01-19 1994-07-19 Vitatron Medical B.V. Dual chamber pacemaker with automatically optimized AV delay
JP2809512B2 (en) * 1994-05-27 1998-10-08 メドトロニック・インコーポレーテッド Dual chamber pacing with atrial and ventricular independence
DE19711058A1 (en) 1997-03-03 1998-09-10 Biotronik Mess & Therapieg Device for determining the AV conduction time
FR2760369B1 (en) * 1997-03-07 1999-04-30 Ela Medical Sa MULTI-SITE HEART STIMULATOR FOR THE TREATMENT OF HEART FAILURE BY STIMULATION
US6070100A (en) * 1997-12-15 2000-05-30 Medtronic Inc. Pacing system for optimizing cardiac output and determining heart condition
DE19758109A1 (en) * 1997-12-17 1999-06-24 Biotronik Mess & Therapieg Heart stimulator, e.g. adaptive pacemaker
US7110817B2 (en) * 1998-05-08 2006-09-19 Cardiac Pacemakers, Inc. Method and apparatus for optimizing ventricular synchrony during DDD resynchronization therapy using adjustable atrio-ventricular delays
US7158830B2 (en) * 1998-05-08 2007-01-02 Cardiac Pacemakers, Inc. Method and apparatus for optimizing stroke volume during DDD resynchronization therapy using adjustable atrio-ventricular delays
US6144880A (en) * 1998-05-08 2000-11-07 Cardiac Pacemakers, Inc. Cardiac pacing using adjustable atrio-ventricular delays
US6119040A (en) * 1998-06-29 2000-09-12 Chirife; Raul Cardiac pacemaker upper rate limit control
US7181278B2 (en) * 1999-05-21 2007-02-20 Cardiac Pacemakers, Inc. Apparatus and method for ventricular rate regularization
US7212860B2 (en) * 1999-05-21 2007-05-01 Cardiac Pacemakers, Inc. Apparatus and method for pacing mode switching during atrial tachyarrhythmias
US7062325B1 (en) * 1999-05-21 2006-06-13 Cardiac Pacemakers Inc Method and apparatus for treating irregular ventricular contractions such as during atrial arrhythmia
US6501988B2 (en) * 2000-12-26 2002-12-31 Cardiac Pacemakers Inc. Apparatus and method for ventricular rate regularization with biventricular sensing
US8064997B2 (en) * 1999-05-21 2011-11-22 Cardiac Pacemakers, Inc. Method and apparatus for treating irregular ventricular contractions such as during atrial arrhythmia
US7194305B1 (en) * 2000-04-07 2007-03-20 Cardiac Pacemakers, Inc. Cardiac rhythm management system with optimization of cardiac performance using heart rate
US6708061B2 (en) 2000-04-07 2004-03-16 Cardiac Pacemakers, Inc. Cardiac rhythm management system with optimization of cardiac performance using heart rate
US6748261B1 (en) 2000-05-08 2004-06-08 Pacesetter, Inc. Implantable cardiac stimulation device for and method of monitoring progression or regression of heart disease by monitoring interchamber conduction delays
US7039461B1 (en) * 2000-05-13 2006-05-02 Cardiac Pacemakers, Inc. Cardiac pacing system for prevention of ventricular fibrillation and ventricular tachycardia episode
US6501987B1 (en) * 2000-05-26 2002-12-31 Cardiac Pacemakers, Inc. Rate smoothing control
US7239914B2 (en) * 2000-05-13 2007-07-03 Cardiac Pacemakers, Inc. Rate smoothing control
US8512220B2 (en) * 2000-05-26 2013-08-20 Cardiac Pacemakers, Inc. Rate smoothing control
US6424865B1 (en) 2000-07-13 2002-07-23 Cardiac Pacemakers, Inc. Ventricular conduction delay trending system and method
US6519495B1 (en) 2000-08-15 2003-02-11 Cardiac Pacemakers, Inc. Rate-adaptive therapy with sensor cross-checking
US6823214B1 (en) 2000-09-08 2004-11-23 Cardiac Pacemakers, Inc. Self-calibrating rate-adaptive pacemaker
US6839593B1 (en) 2000-09-08 2005-01-04 Cardiac Pacemakers, Inc. Rate-adaptive therapy with automatic limiting of maximum pacing rate
SE0004240D0 (en) * 2000-11-17 2000-11-17 St Jude Medical A cardiac stimulating device
US6957100B2 (en) * 2000-12-26 2005-10-18 Cardiac Pacemakers, Inc. Method and system for display of cardiac event intervals in a resynchronization pacemaker
US20020087198A1 (en) * 2000-12-29 2002-07-04 Kramer Andrew P. Apparatus and method for ventricular rate regularization
WO2002064205A2 (en) * 2001-02-13 2002-08-22 Quetzal Biomedical, Inc. Multi-electrode apparatus and method for treatment of congestive heart failure
US6990375B2 (en) * 2001-03-02 2006-01-24 Cardiac Pacemakers, Inc. Adjustment of the breakpoint of the rate response curve based on minute ventilation values
US6597951B2 (en) * 2001-03-16 2003-07-22 Cardiac Pacemakers, Inc. Automatic selection from multiple cardiac optimization protocols
US6792307B1 (en) 2001-09-12 2004-09-14 Pacesetter, Inc. Implantable cardiac stimulation system and method for measuring atrioventricular conduction and adjusting atrioventricular hysteresis
US7324844B1 (en) 2001-09-12 2008-01-29 Pacesetter, Inc. Implantable cardiac stimulation system and method for measuring atrioventricular conduction and adjusting atrioventricular hysteresis
US6973349B2 (en) * 2001-12-05 2005-12-06 Cardiac Pacemakers, Inc. Method and apparatus for minimizing post-infarct ventricular remodeling
US6766197B1 (en) 2002-01-11 2004-07-20 Pacesetter, Inc. System and method with improved automatic testing functions for automatic capture verification
US7206634B2 (en) * 2002-07-26 2007-04-17 Cardiac Pacemakers, Inc. Method and apparatus for optimizing cardiac pumping performance
US7647103B2 (en) * 2003-04-23 2010-01-12 Medtronic, Inc. Addressing pacemaker syndrome
US7079895B2 (en) * 2003-04-25 2006-07-18 Medtronic, Inc. Cardiac pacing for optimal intra-left ventricular resynchronization
US7231249B2 (en) 2003-07-24 2007-06-12 Mirowski Family Ventures, L.L.C. Methods, apparatus, and systems for multiple stimulation from a single stimulator
WO2005020025A2 (en) * 2003-08-20 2005-03-03 Stuart Schecter Method and apparatus for automatically programming crt devices
US20050055057A1 (en) 2003-09-05 2005-03-10 Mirowski Famliy Ventures, L.L.C. Method and apparatus for providing ipselateral therapy
US20050055058A1 (en) 2003-09-08 2005-03-10 Mower Morton M. Method and apparatus for intrachamber resynchronization
US7233824B2 (en) * 2003-10-07 2007-06-19 Medtronic, Inc. Secure and efficacious therapy delivery for an extra-systolic stimulation pacing engine
US20050125041A1 (en) * 2003-11-05 2005-06-09 Xiaoyi Min Methods for ventricular pacing
US9002452B2 (en) * 2003-11-07 2015-04-07 Cardiac Pacemakers, Inc. Electrical therapy for diastolic dysfunction
US7184835B2 (en) 2003-12-12 2007-02-27 Cardiac Pacemakers, Inc. Method and apparatus for adjustable AVD programming using a table
US7184817B2 (en) * 2003-12-19 2007-02-27 Cardiac Pacemakers, Inc. System and method for acquiring breathing pattern signals from intracardiac electrograms and its use for heart failure therapy decision making and disease monitoring
US7215997B2 (en) * 2003-12-22 2007-05-08 Cardiac Pacemakers, Inc. Dynamic device therapy control for treating post myocardial infarction patients
US7203540B2 (en) * 2003-12-22 2007-04-10 Cardiac Pacemakers, Inc. Method and system for setting cardiac resynchronization therapy parameters
US7123960B2 (en) 2003-12-22 2006-10-17 Cardiac Pacemakers, Inc. Method and system for delivering cardiac resynchronization therapy with variable atrio-ventricular delay
US7248925B2 (en) * 2004-08-27 2007-07-24 Pacesetter, Inc. System and method for determining optimal atrioventricular delay based on intrinsic conduction delays
US7792580B2 (en) 2004-09-21 2010-09-07 Medtronic, Inc. Implantable medical device with his-purkinje activity detection
US7505813B1 (en) * 2005-08-08 2009-03-17 Pacesetter, Inc. System and method for determining preferred atrioventricular pacing delay values based on intracardiac electrogram signals
US7899533B2 (en) * 2005-10-25 2011-03-01 Medtronic, Inc. System and method of AV interval selection in an implantable medical device
US7672721B2 (en) * 2005-10-25 2010-03-02 Medtronic, Inc. System and method of AV interval selection in an implantable medical device
US7769449B2 (en) * 2005-10-25 2010-08-03 Medtronic, Inc. System and method of AV interval selection in an implantable medical device
US7869871B2 (en) 2006-03-31 2011-01-11 Cardiac Pacemakers, Inc. Pacing therapy for diastolic heart failure
US7877144B2 (en) * 2006-07-26 2011-01-25 Medtronic, Inc. Predicting chronic optimal A-V intervals for biventricular pacing via observed inter-atrial delay
US7778706B1 (en) 2006-12-13 2010-08-17 Pacesetter, Inc. Rate adaptive biventricular and cardiac resynchronization therapy
US7702390B1 (en) 2006-12-13 2010-04-20 Pacesetter, Inc. Rate adaptive biventricular and cardiac resynchronization therapy
US7881787B1 (en) 2006-12-18 2011-02-01 Pacesetter, Inc. Capture detection system and method CRT therapy
US7925346B1 (en) 2007-01-16 2011-04-12 Pacesetter, Inc. Model for prediction of paced atrial activation time and interatrial conduction delay
US20090149904A1 (en) * 2007-12-11 2009-06-11 Cardiac Pacemakers, Inc. Lv unipolar sensing or pacing vector
WO2009075725A1 (en) 2007-12-13 2009-06-18 Cardiac Pacemakers, Inc. Supraventricular tachy sensing vector
US9566013B2 (en) * 2008-03-13 2017-02-14 Medtronic, Inc. Methods and apparatus for monitoring P-wave duration and end and QRS duration with an implantable medical device
US20090234413A1 (en) * 2008-03-13 2009-09-17 Sambelashvili Aleksandre T Apparatus and methods of adjusting atrioventricular pacing delay intervals in a rate adaptive pacemaker
US7941218B2 (en) * 2008-03-13 2011-05-10 Medtronic, Inc. Apparatus and methods of optimizing atrioventricular pacing delay intervals
US20090234414A1 (en) * 2008-03-13 2009-09-17 Sambelashvili Aleksandre T Apparatus and methods of optimizing atrioventricular pacing delay intervals
US7941217B1 (en) 2008-03-25 2011-05-10 Pacesetter, Inc. Techniques for promoting biventricular synchrony and stimulation device efficiency using intentional fusion
JP2011519665A (en) * 2008-05-08 2011-07-14 カーディアック ペースメイカーズ， インコーポレイテッド Atrioventricular delay time calculation system
US20090299423A1 (en) * 2008-06-03 2009-12-03 Pacesetter, Inc. Systems and methods for determining inter-atrial conduction delays using multi-pole left ventricular pacing/sensing leads
US9375578B2 (en) * 2008-07-23 2016-06-28 Medtronic, Inc. Cardiac pacing methods and apparatus
DE102008042681A1 (en) * 2008-10-08 2010-04-15 Biotronik Crm Patent Ag Method and device for processing cardiac signals
US8442634B2 (en) * 2008-12-04 2013-05-14 Pacesetter, Inc. Systems and methods for controlling ventricular pacing in patients with long inter-atrial conduction delays
US9533158B2 (en) * 2008-12-11 2017-01-03 Pacesetter, Inc. System and method for monitoring patient condition using atrial timing characteristics
US9037237B2 (en) * 2009-07-29 2015-05-19 Medtronic, Inc. Algorithm to modulate atrial-ventricular delay and rate response based on autonomic function
US10004906B2 (en) 2015-07-16 2018-06-26 Medtronic, Inc. Confirming sensed atrial events for pacing during resynchronization therapy in a cardiac medical device and medical device system
US10694967B2 (en) 2017-10-18 2020-06-30 Medtronic, Inc. State-based atrial event detection
CN116549854B (en) * 2023-04-20 2023-11-17 丹源医学科技(杭州)有限公司 Double-cavity pacing device capable of minimizing ventricular pacing

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421116A (en) * 1980-10-14 1983-12-20 Medtronic, Inc. Heart pacemaker with separate A-V intervals for atrial synchronous and atrial-ventricular sequential pacing modes
US4485818A (en) * 1980-11-14 1984-12-04 Cordis Corporation Multi-mode microprocessor-based programmable cardiac pacer
DE3115124A1 (en) * 1981-04-10 1982-11-04 Biotronik Meß- und Therapiegeräte GmbH & Co Ingenieurbüro Berlin, 1000 Berlin "HEART PACEMAKER"
DE3277684D1 (en) * 1981-05-04 1987-12-23 Biotronik Mess & Therapieg Pacemaker
US4452248A (en) * 1981-10-13 1984-06-05 Keller Jr J Walter Bidirectional pacemaker
US4554921A (en) * 1983-02-11 1985-11-26 Vitafin N.V. Dual chamber pacemaker with automatic high rate limit mode determination
US4539991A (en) * 1983-02-11 1985-09-10 Vitafin N.V. Dual chamber pacemaker
US4686988A (en) * 1984-10-19 1987-08-18 Sholder Jason A Pacemaker system and method for measuring and monitoring cardiac activity and for determining and maintaining capture
JPS63500845A (en) * 1985-03-27 1988-03-31 シ−メンス−エレマ　アクチエボラク Physiological sensor for automatic pacing interval adjustment of cardiac pacemakers
US4624260A (en) * 1985-05-07 1986-11-25 Intermedics, Inc. Pacemaker with conditional atrial tracking capability
US4802483A (en) * 1986-03-18 1989-02-07 Siemens Aktiengesellschaft Heart pacemaker for avoiding pacemaker mediated tachycardia at mode switching
US4799486A (en) * 1987-03-13 1989-01-24 Cardiac Pacemakers, Inc. Refractoriless atrial sensing in dual chamber pacemakers
US4890617A (en) * 1987-11-25 1990-01-02 Medtronic, Inc. Dual chamber activity responsive pacer
US4920965A (en) * 1987-11-25 1990-05-01 Medtronic, Inc. Dual chamber pacemaker with adaptive atrial escape interval
US4856524A (en) * 1988-08-29 1989-08-15 Intermedics, Inc. A-V responsive rate adaptive pacemaker
US4932406A (en) * 1988-09-23 1990-06-12 Medtronic Dual chamber rate responsive pacemaker
US4940053A (en) * 1989-01-25 1990-07-10 Siemens-Pacesetter, Inc. Energy controlled rate-responsive pacemaker having automatically adjustable control parameters
US4940052A (en) * 1989-01-25 1990-07-10 Siemens-Pacesetter, Inc. Microprocessor controlled rate-responsive pacemaker having automatic rate response threshold adjustment
US4945909A (en) * 1989-06-06 1990-08-07 Cook Pacemaker Corporation Pacemaker with activity-dependent rate limiting

Also Published As

Publication number Publication date
AU646117B2 (en) 1994-02-10
EP0494487A3 (en) 1992-08-12
JPH0670989A (en) 1994-03-15
AU8888091A (en) 1992-06-11
EP0494487A2 (en) 1992-07-15
US5179949A (en) 1993-01-19
CA2046520C (en) 1997-06-03
JP3548182B2 (en) 2004-07-28
ES2086490T3 (en) 1996-07-01
DE69116846D1 (en) 1996-03-14
ATE133572T1 (en) 1996-02-15
DE69116846T2 (en) 1996-05-30
EP0494487B1 (en) 1996-01-31

Similar Documents

Publication Publication Date Title
AU646117B2 (en) Cardiac pacemaker with automatic A-V programming for optimization of left heart A-V interval
US6070100A (en) Pacing system for optimizing cardiac output and determining heart condition
US8046065B2 (en) Fusion pacing enhancements
EP0147820B1 (en) Dual chamber pacer with alternative rate adaptive means
US6885890B2 (en) Apparatus and method for multi-site anti-tachycardia pacing
US6606516B2 (en) System and method for programmably controlling stimulation electrode configurations and activation sequence in a multi-site cardiac stimulation device
US6731980B1 (en) System and method for automatically setting a pre-ventricular atrial blanking period
US6862477B1 (en) Multi-site cardiac stimulation device and method for detecting retrograde conduction
US20020177880A1 (en) System and method for bi-chamber stimulation using dynamically adapted interpulse delay
US7769448B1 (en) Multi-site cardiac stimulation device for controlling inter-chamber stimulation delay
US7136700B1 (en) System and method for delivering post-atrial arrhythmia therapy
US7146215B1 (en) Multi-site cardiac stimulation device and method for detecting retrograde conduction
Jacobson et al. Advantages and Disadvantages of Various Upper and Lower Rate Responses.

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry