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| Number | Title | Issue Date |
| 8145309 | Monitoring short term fluctuations in PR intervals following premature ventricular contractions Implantable systems, and methods for use therein, perform at least one of a cardiac assessment and an autonomic assessment. Short-term fluctuations in PR intervals, that follow the premature contractions in the ventricles, are monitored. At least one of a cardiac as... | 03/27/2012 |
| 8145308 | Method and apparatus for determining a parameter associated with delivery of therapy in a medical device A medical device and method for determining a parameter for delivery of a predetermined pacing therapy that includes a plurality of electrodes to deliver a pacing therapy, including the predetermined pacing therapy, and a control unit to control the timing of the de... | 03/27/2012 |
| 8090444 | Optimization of cardiac pacing therapy based on paced propagation delay An exemplary method includes delivering stimulation energy via a right ventricular site; sensing an evoked response caused by the delivered stimulation energy at the right ventricular site; calculating a paced propagation delay for the right ventricular site (PPD | 01/03/2012 |
| 7991471 | Method and apparatus for detecting arrhythmias in a subcutaneous medical device A method and apparatus for detecting a cardiac event in a medical device that includes sensing cardiac signals from a plurality of electrodes forming a first sensing vector and a second sensing vector, advancing from a first state to a second state in response to pr... | 08/02/2011 |
| 7899533 | System and method of AV interval selection in an implantable medical device An implantable medical device provides ventricular pacing capabilities and optimizes AV intervals for multiple purposes. In general, intrinsic conduction is promoted by determining when electromechanical systole (EMS) ends and setting an AV interval accordingly. EMS... | 03/01/2011 |
| 7899534 | Expert system and method A medical device programmer and a method of operation in which a first data value is received and used in the execution of one or more algorithms. One or more suggested pulse generator settings are calculated from the one or more algorithms based on the first data v... | 03/01/2011 |
| 7890172 | Pacing output configuration selection for cardiac resynchronization therapy patients Cardiac therapy systems include multiple electrodes respectively positionable at multiple left ventricular electrode sites. A pulse generator is coupled to the electrodes and configured to deliver a cardiac resynchronization therapy (CRT). A processor is configured ... | 02/15/2011 |
| 7881792 | Methods and systems for detecting the presence of T-wave alternans Embodiments of the present invention relate to implantable systems, and method for use therein, that can detect T-wave alternans. In accordance with specific embodiments of the present invention, intrinsic premature contractions of the ventricles are detected, and a... | 02/01/2011 |
| 7877144 | Predicting chronic optimal A-V intervals for biventricular pacing via observed inter-atrial delay Methods for optimizing the atrio-ventricular (A-V) delay for efficacious delivery of cardiac resynchronization therapy. In CRT devices, the programmed A-V delay starts with detection of electrical activity in the right atrium (RA). Thus, a major component of the A-V... | 01/25/2011 |
| 7856270 | Cardiac pacing using adjustable atrio-ventricular delays A pacing system for providing optimal hemodynamic cardiac function for parameters such as contractility (peak left ventricle pressure change during systole or LV+dp/dt), or stroke volume (aortic pulse pressure) using system for calculating atrio-ventricular delays f... | 12/21/2010 |
| 7761160 | System and method for determining atrioventicular pacing delay based on atrial repolarization Techniques are provided for estimating optimal atrioventricular pacing delay values for use in pacing the ventricles based on features of an intracardiac electrogram (IEGM) signal. Briefly, atrioventricular pacing delay pacing values are set based upon the location ... | 07/20/2010 |
| 7715917 | Method and apparatus for determining an efficacious atrioventricular delay interval Determining an optimal atrioventricular interval is of interest for proper delivery of cardiac resynchronization therapy. Although device optimization is gradually and more frequently being performed through a referral process with which the patient undergoes an ech... | 05/11/2010 |
| 7702391 | Monitoring short term fluctuations in PR intervals following premature ventricular contractions Implantable systems, and methods for use therein, perform at least one of a cardiac assessment and an autonomic assessment. Short-term fluctuations in PR intervals, that follow the premature contractions in the ventricles, are monitored. At least one of a cardiac as... | 04/20/2010 |
| 7647107 | Addressing recurrent atrial fibrillation Techniques for applying overdrive pacing to one or both atria following termination of an AF episode, to prevent a recurrent AF episode. An implantable medical device such as a pacemaker applies overdrive pacing according to overdrive pacing parameters, and sets the... | 01/12/2010 |
| 7580747 | Inducing premature atrial contractions for the purpose of monitoring autonomic tone, risk of sudden cardiac death and ischemic events Implantable systems, and methods for use therein, perform at least one of a cardiac assessment and an autonomic assessment. Premature atrial contractions (PACs) are induced to thereby cause corresponding premature contractions in the ventricles. Short-term fluctuati... | 08/25/2009 |
| 7433736 | Atrial capture detection via atrial-ventricular conduction Techniques for increasing the accuracy of detection of atrial capture may involve determining a ventricular sensing window for ventricular senses associated with atrial test pulses based on observed ventricular senses. For example, an implanted medical device may de... | 10/07/2008 |
| 7424324 | Identifying heart failure patients suitable for resynchronization therapy using QRS complex width from an intracardiac electrogram Methods and systems are disclosed for determining whether a patient is a responder to cardiac resynchronization therapy. The beginning and ending of the intrinsic ventricular depolarization are determined through signals measured from one or more electrodes implante... | 09/09/2008 |
| 7400920 | Detection of renal failure by cardiac implantable medical device Morphological features within electrical cardiac signals are tracked and changes in features are monitored to detect renal failure. The morphological feature may be an interval between corresponding polarization events such as the interval between QRS-complexes and ... | 07/15/2008 |
| 7366569 | Non-invasive method and apparatus for cardiac pacemaker pacing parameter optimization and monitoring of cardiac dysfunction A plethysmogram signal is sensed from a patient and provided to a programmer device for monitoring the condition of the patient and for optimizing pacing parameters of a cardiac device implanted in the patient. The programmer device analyzes the plethysmogram signal... | 04/29/2008 |
| 7363077 | Adaptive timing interval control method for treating congestive heart failure A method of treating a heart with an implantable cardiac stimulation device involves transiently disturbing the steady state hemodynamic parameters by altering a cardiac cycle timing interval sufficient to reduce end diastolic volume for that cycle. The cardiac cycl... | 04/22/2008 |
| 7361146 | System and method for detecting abnormal respiration via respiratory parameters derived from intracardiac electrogram signals Techniques are provided for tracking patient respiration based upon intracardiac electrogram (IEGM) signals or other electrical cardiac signals. Briefly, respiration patterns are detected based upon cycle-to-cycle changes in morphological features associated with in... | 04/22/2008 |
| 7353061 | Biventricular stimulation device with shortened inter-ventricular delay A biventricular cardiac stimulation device has a pulse generator for delivering stimulation pulses at least to the ventricles of a patient's heart. An evoked response detector has independent first and second ventricular sensing channels for ventricular evoked respo... | 04/01/2008 |
| 7346393 | Implantable cardiac rhythm management system having multiple therapy modalities A cardiac rhythm management system for providing a plurality of therapy modalities. For example, the system may include a cardiac resynchronization therapy module for providing cardiac resynchronization therapy and a pacemaker module for providing bradycardia therap... | 03/18/2008 |
| 7336997 | Heart treatment equipment and heart treatment method Heart treatment equipment and a heart treatment method directed to prevention of a fatal arrhythmia by detecting a physical exercise or a mental stress by using a sensor and thereafter controlling the vagus nerve stimulation, wherein sensor means for detecting vario... | 02/26/2008 |
| 7328066 | Implantable cardiac stimulation device, system and method that identifies and prevents impending arrhythmias of the atria An implantable cardiac stimulation device includes a system that identifies and prevents the occurrence of impending atrial arrhythmias. A sensing circuit senses atrial activity of a patient's heart to provide an atrial activity signal. A processor compares the atri... | 02/05/2008 |
| 7324844 | Implantable cardiac stimulation system and method for measuring atrioventricular conduction and adjusting atrioventricular hysteresis An implantable cardiac stimulation device and method measure atrioventricular conduction times and automatically adjust an atrioventricular delay time based on the measured conduction time values. ... | 01/29/2008 |
| 7320675 | Method and apparatus for modulating cellular metabolism during post-ischemia or heart failure A drug delivery system detects a cardiac condition indicative of a need for increasing a cardiac metabolic level and, in response, releases a drug into tissue or blood to shift a source of metabolically synthesized energy fueling cardiac contraction from fatty acid ... | 01/22/2008 |
| 7313439 | Method and apparatus for predicting arrhythmias using diurnal heart rate A method of predicting an arrhythmia, such as ventricular tachycardia, for example, in a medical device using a quantitative measure in order to allow assessment of patient risk and to enable preventative interventions by the device and clinicians. The trending of d... | 12/25/2007 |
| 7313438 | Selective chamber ATP pacing A method and system for delivering anti-tachycardia pacing (ATP) is disclosed. By comparing the time intervals between senses from both ventricles, the origin of a ventricular tachyarrhythmia may be mapped to one or the other of the ventricles. The arrhythmic ventri... | 12/25/2007 |
| 7310551 | Diagnostic gauge for cardiac health analysis A diagnostic gauge for cardiac health is described. Multiple parameters pertaining to a patent's cardiac health are distilled to a single diagnostic vector having an angle and a magnitude. The diagnostic vector is plotted on a Cartesian graph to form a visual gauge ... | 12/18/2007 |
| 7308307 | Implantable single-chamber atrial pacing device providing active ventricular far field sensing and rate limit A maximum pacing rate is dynamically established during single-chamber atrial pacing of a heart by a rate control system within a single-chamber or dual-chamber cardiac stimulation device which paces the atria of a heart on demand at the end of an escape interval. T... | 12/11/2007 |
| 7292887 | Apparatus and method for spatially and temporally distributing cardiac electrical stimulation A cardiac electro-stimulatory device and method for operating same in which stimulation pulses are distributed among a plurality of electrodes fixed at different sites of the myocardium in order to reduce myocardial hypertrophy brought about by repeated pacing at a ... | 11/06/2007 |
| 7286874 | Ensemble averaging for evoked responses Exemplary methods and devices for analyzing intracardiac electrocardiograms (IEGMs) using ensemble averaging and/or an ensemble average. Various methods and/or devices are suitable for use with atrial and/or ventricular autocapture. Other methods, devices and/or sys... | 10/23/2007 |
| 7283874 | Acoustically powered implantable stimulating device An implantable stimulation system comprises an implantable stimulator and a control device. The control device is configured to transmit acoustic waves to the implantable stimulator, and the implantable stimulator is configured to transform the acoustic waves into e... | 10/16/2007 |
| 7280869 | Arrhythmia termination detection based on beat pattern In general, the invention is directed to an apparatus and method for determining whether an identified atrial tachyarrhythmia episode has terminated. The invention enables determination of whether the tachyarrhythmia episode has terminated based on cardiac beat patt... | 10/09/2007 |
| 7274959 | System and method for detecting cardiac ischemia using an implantable medical device A technique is provided for detecting episodes of cardiac ischemia based on an examination of post-T-wave signal segments. Since cardiac ischemia is often a precursor to acute myocardial infarction (AMI) or ventricular fibrillation (VF), the technique thereby provid... | 09/25/2007 |
| 7272438 | Mode switching heart stimulation apparatus and method In a heart stimulation device a mode of operation is switched in response to detection of atrial tachyarrhythmia such as atrial fibrillation. The stimulation device may initially operate in a normal mode of pacing then, upon detection of atrial tachyarrhythmia, the ... | 09/18/2007 |
| 7269457 | Method and system for vagal nerve stimulation with multi-site cardiac pacing A method of performing a medical procedure is provided. The medical procedure includes stimulation of a patient's heart while stimulating a nerve of the patient in order to modulate the patient's inflammatory process. More particularly, the medical procedure include... | 09/11/2007 |
| 7269454 | Methods and devices to guide therapy for ventricular fibrillation based on waveform analysis and survival benefit analysis A method of determining a state of ventricular fibrillation from a waveform, includes: performing calculations on the Fourier transform of the waveform voltage values by using the quotient of the power in a high frequency band and of the power in a low frequency ban... | 09/11/2007 |
| 7266411 | Implantable cardiac stimulation device and method providing dynamic sensing configurations for bichamber stimulation and tachyarrhythmia detection An implantable cardiac stimulation device provides bichamber pacing and dynamic bichamber and single chamber sensing. The device includes a sensing circuit that senses activity of a heart, a lead system coupled to a plurality of chambers of the heart, and a cardiac ... | 09/04/2007 |
