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8185200 |
Disable for atrioventricular delay adjustment
An apparatus comprises an electrical stimulation circuit, a ventricular sensing circuit, a ventricular sensing timer, and an atrial pacing timer. The ventricular sensing circuit detects an...
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8180439 |
Ischemia detection using intra-cardiac signals
An implanted cardiac rhythm management device is disclosed that is operative to detect myocardial ischemia. This is done by evaluating electrogram features to detect an electrocardiographic change;...
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8175705 |
System and method for sustained baroreflex stimulation
Various aspects of the present subject matter provide an implantable medical device. In various embodiments, the device comprises a baroreflex stimulator and a controller. The baroreflex stimulator...
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8175702 |
Method for low-voltage termination of cardiac arrhythmias by effectively unpinning anatomical reentries
A method for extinguishing a cardiac arrhythmia utilizes destructive interference of the passing of the reentry wave tip of an anatomical reentry through a depolarized region created by a...
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8175706 |
Overlapping pacing and tachyarrhythmia detection zones
An example implantable medical device (IMD), such as an implantable cardioverter defibrillator, may be configured to store a ventricular tachycardia zone, wherein the ventricular tachycardia zone...
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8170668 |
Baroreflex sensitivity monitoring and trending for tachyarrhythmia detection and therapy
A system comprising an implantable medical device (IMD) that includes a tachyarrhythmia detector, a baroreflex detector to obtain baroreflex information, and a processor in communication with the...
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8165675 |
Systems and methods for use with an implantable medical device for discriminating VT and SVT based on ventricular depolarization event timing
Techniques are described for discriminating ventricular tachycardia (VT) from supraventricular tachycardia (SVT) using an implantable medical device capable of multi-site ventricular sensing. In...
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8150514 |
Spectral selection of operating mode in an implantable stimulator device
A spectral fingerprint technique is disclosed that allows an ICD to eliminate unnecessary shocks to the heart.
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8145301 |
Blending cardiac rhythm detection processes
Systems and methods are described for classifying a cardiac rhythm. A cardiac rhythm is classified using a classification process that includes a plurality of cardiac rhythm discriminators. Each...
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8140153 |
Cardiac tachyarrhythmia therapy selection based on patient response information
Cardiac treatment methods and devices providing templates representative of past tachyarrhythmia events, each template associated with a therapy. A cardiac waveform is detected, and if it...
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8126553 |
Sensing integrity determination based on cardiovascular pressure
Electrical noise may be discriminated from sensed heart signals based on cardiovascular pressure. A plurality of detected cardiovascular pressure values are respectively associated with a plurality...
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8116867 |
Methods and devices for tachyarrhythmia sensing and high-pass filter bypass
The present invention, in illustrative embodiments, includes methods and devices for analyzing cardiac signals in an implantable cardiac stimulus system. Within the analysis, a threshold may be...
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8103344 |
Method, device, implantable stimulator and dual chamber cardiac therapy system
In a device and method in a dual chamber pacing system operating in an atrial synchronized mode, the cardiac stimulator is connectable to a lead arrangement arranged for sensing atrial electrical...
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8073538 |
Treatment of cardiac arrhythmia by modification of neuronal signaling through fat pads of the heart
To control cardiac arrhythmias such as atrial fibrillation post-operatively, various non-ablative agents include polymers, fibroblasts, neurotoxins, and growth factors are introduced into one or...
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8073532 |
Method and apparatus for beat alignment and comparison
Methods of using a template having a template data set and template parameters to provide improved alignment of captured cardiac signal data to a stored template. More particularly, in an...
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8060197 |
Parasympathetic stimulation for termination of non-sinus atrial tachycardia
Apparatus is provided, which includes an electrode device, configured to be coupled to an atrial site of a subject containing parasympathetic nervous tissue, and a control unit. The control unit is...
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8060200 |
Self-adjusting optimal waveforms
An exemplary method includes detecting fibrillation, measuring impedance of a defibrillation circuit that includes myocardial tissue, determining one or more defibrillation shock parameters based...
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8055341 |
Backup pacing during tachycardia
A tachycardia episode can be detected in a subject using a processor, and whether the tachycardia episode is a sustained tachycardia episode can be determined during a period of time. A backup...
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8055340 |
Method and device for comprehensive anti-tachyarrhythmia therapy
A method and apparatus for delivering therapy to treat ventricular tachyarrhythmias is described. In one embodiment, neural stimulation, anti-tachycardia pacing, and shock therapy are employed in a...
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8052676 |
Surgical methods and apparatus for stimulating tissue
Surgical systems, devices and methods including one or more tissue stimulation elements that, in some instances, may also be used for sensing purposes. Some of the surgical devices also include a...
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8050758 |
Method and apparatus for selecting and timing anti-tachyarrhythmia pacing using cardiac cycle length stability
An implantable medical device delivers anti-tachyarrhythmia therapies including anti-tachyarrhythmia pacing (ATP). When a tachyarrhythmia episode is detected, the implantable medical device...
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8050764 |
Cross-checking of transthoracic impedance and acceleration signals
A first chamber minute ventilation rate is determined based on a first transthoracic impedance signal received from a first chamber of a heart and a second chamber minute ventilation rate is...
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8046063 |
Implantable medical device with adaptive operation
An implantable medical device operates with an algorithm that promotes intrinsic conduction and reduces ventricular pacing. The IMD monitors the occurrence of necessary ventricular pacing and takes...
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8046067 |
Methods and apparatus for detecting ventricular depolarizations during atrial pacing
AV synchronous, dual chamber pacing systems are disclosed having improved sensing of ectopic ventricular depolarizations or PVCs coincidentally occurring at or shortly following delivery of an...
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8046065 |
Fusion pacing enhancements
The disclosure provides methods and apparatus of left ventricular pacing including automated adjustment of a atrio-ventricular (AV) pacing delay interval and intrinsic AV nodal conduction testing....
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8046064 |
Method of delivering PESP/ICC as well as adjusting the refractory period of the heart
Medical devices and methods are used to treat cardiac dysfunction conditions which involve delivery of stimulation pulses in cardiac refractory periods in order to modulate an effective refractory...
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8046068 |
Apparatus and method for treating ventricular tachyarrhythmias
A system and method for selectively treating a ventricular tachycardia based on sensed atrial and ventricular intervals from the patient's heart. A detection window of the ten most recent atrial...
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8041425 |
Atrial tachyarrhythmia detection using selected atrial intervals
Methods and systems are directed to detecting atrial tachyarrhythmia. A plurality of A-A intervals is detected. The detected A-A intervals are selected and used to detect atrial tachyarrhythmia....
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8036746 |
Temporary disablement feature for implantable device with anti-tachyarrhythmia functions
An implantable cardiac rhythm management device for delivering anti-tachyarrhythmia therapy is provided with a temporary disablement feature so that the delivery of anti-tachyarrhythmia therapy may...
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8032217 |
Zoneless tachyarrhythmia detection with real-time rhythm monitoring
A method of using an implantable medical device (IMD) to monitor a ventricular contraction rate of a subject, monitor an atrial contraction rate of the subject, declare tachyarrhythmia if the...
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8027722 |
Multifocal PVC detection for prevention of arrhythmias
Multifocal PVCs are detected and prevented. If the PVCs being detected have variable coupling intervals and significantly different morphologies, they are deemed multifocal and a prevention therapy...
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8019417 |
PAC therapy
An implantable cardiac device is programmed to detect and classify premature atrial contractions (PACs) and administer responsive pacing therapy. The responsive pacing therapy is in the form of an...
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8010193 |
Device and method to discriminate between supraventricular tachycardias and ventricular arrhythmias
This invention provides a method to discriminate between ventricular arrhythmia and supraventricular tachycardia by detecting an earliest arriving electrical signal following antitachycardia...
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8010194 |
Determining site-to-site pacing delay for multi-site anti-tachycardia pacing
An exemplary method includes delivering a pace using an electrode positioned on the lateral wall of the left ventricle of a heart, sensing the pace using an electrode positioned in the right...
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8005545 |
Parasympathetic stimulation for prevention and treatment of atrial fibrillation
A method is provided, including identifying that a subject is at risk of suffering from atrial fibrillation (AF). Responsively to the identifying, a risk of an occurrence of an episode of the AF is...
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7991470 |
Post-shock recovery monitoring for tachyarrhythmia discrimination
A cardiac rhythm management device is configured to discriminate between ventricular and supraventricular tachycardias (referred to as SVT/VT discrimination) by utilizing a morphology criterion in...
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7991467 |
Remotely enabled pacemaker and implantable subcutaneous cardioverter/defibrillator system
Subcutaneous Implantable cardioverter-defibrillators (SubQ ICDs) are disclosed that are entirely implantable subcutaneously with minimal surgical intrusion into the body of the patient and provide...
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7991469 |
Pacing therapy for extending atrial refractory period
A device and method are presented for prolonging the atrial effective refractory period with pacing therapy. Such refractory period prolongation renders the atrial tissue less susceptible to the...
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7983752 |
Antitachycardiac stimulator
Implantable cardiac stimulator, with chamber stimulation unit connectable to left/right ventricular stimulation electrode to generate/deliver chamber stimulation pulses for stimulation of...
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7979122 |
Implantable sudden cardiac death prevention device with reduced programmable feature set
Preventing sudden cardiac death involves providing an implantable device configured to deliver only two forms of cardiac therapy, the two forms of cardiac therapy including an anti-tachyarrhythmia...
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7974690 |
Lead integrity testing during suspected tachyarrhythmias
Techniques for performing a lead integrity test during a suspected tachyarrhythmia are described. An implantable medical device (IMD) may perform the test prior to delivering a therapeutic shock to...
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7970464 |
Method and system for responding to non-perfusing and non-shockable heart rhythms
A system and method are disclosed for prompting emergency medical personnel who are attending to a patient. When the patient presents a heart rhythm that is a non-perfusing and non-shockable rhythm...
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7970468 |
Method for programming arrhythmia discrimination algorithms in ICDs
Embodiments of the present invention are for use with implantable cardiac devices that have discriminator parameters that the devices use to discriminate between ventricular tachycardia (VT) and...
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7957803 |
Atrial capture verification
Methods and systems for classifying cardiac responses to pacing stimulation and/or preventing retrograde cardiac conduction are described. Following delivery of a pacing pulse to an atrium of the...
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7953482 |
Delivery of CRT therapy during AT/AF termination
In some embodiments, a method for operating a cardiac rhythm management device may include one or more of the following steps: (a) sensing atrial depolarizations through an implanted atrial...
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7953481 |
Anti-arrhythmic device and a method of delivering anti-arrhythmic cardiac therapy
A cardiac contractility modulating (CCM) device (30) includes an anti-arrhythmic therapy unit (38) for detecting a cardiac arrhythmia in a heart (2) of a patient based on processing electrical...
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7941208 |
Therapy delivery for identified tachyarrhythmia episode types
Methods and systems for identifying tachyarrhythmia episode types and delivering therapy to mitigate the identified tachyarrhythmia episode types are described. Electrogram signals of cardiac...
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7933650 |
Method and apparatus for selecting and timing anti-tachyarrhythmia pacing using cardiac signal morphology
A cardiac rhythm management (CRM) system includes an implantable medical device that delivers anti-tachyarrhythmia therapies including ATP. When a tachyarrhythmia episode is detected, the...
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7930017 |
Method and system for trending variation in coronary burden across multiple heart rate ranges
A method and system are provided for trending variation in coronary burden across multiple heart rate ranges. The method and system include obtaining cardiac signals having a segment of interest...
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7917216 |
Multi-site pacing for atrial tachyarrhythmias
Tachyarrhythmia is treated by applying anti-tachycardia pacing through at least one multi-site electrode set located on, in or around the heart. The electrode set is arranged and located such that...
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