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7603172 |
System and method of using regression models to estimate vulnerable periods for heart stimulation parameters
Heart stimulator that provides for timing a premature stimulation pulse for anti-tachycardia pacing outside the vulnerable phase of a ventricle, to terminate stable ventricular tachycardia while...
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7596411 |
Apparatus and method for two-component bioelectrical impedance ratio measuring and monitoring
An implantable cardiac stimulation and rhythm management device includes an impedance measuring circuit which determines a patient's intra-thoracic impedance and the resistance and reactance...
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7532929 |
Adaptive ventricular rate smoothing during atrial fibrillation
An implantable cardiac device is provided for adaptive ventricular rate smoothing during atrial fibrillation (AF). When AF is detected, the operation of the device is switched to non-atrial...
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7515960 |
Method and apparatus to terminate ventricular tachycardia via pacing
An implantable device for terminating ventricular tachycardia is disclosed. The device includes a processor configured to determine a first antitachycardia pulse routine of N pulses. In the routine...
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7440802 |
System and method for managing refractory periods in a cardiac rhythm management device with biventricular sensing
A method and system for managing refractory periods in a cardiac rhythm management device configured for biventricular or biatrial sensing. Refractory periods for each channel of the pacemaker are...
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7403818 |
System and method for cardiac rhythm management with synchronized pacing protection period
A device and method for cardiac rhythm management in which a heart chamber is paced in accordance with a pacing mode that employs sense signals from the opposite chamber. A protection period...
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7392088 |
Capture detection for multi-chamber pacing
Multi-chamber pacing may result in capture of one chamber, capture of multiple chambers, fusion, or non-capture. Approaches for detecting various capture conditions during multi-chamber pacing are...
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7363081 |
System and method for providing preventive overdrive pacing and antitachycardia pacing using an implantable cardiac stimulation device
Techniques for enabling both preventive overdrive pacing and antitachycardia pacing (ATP) within an implantable device are provided. The device gains the benefits of overdrive pacing for preventing...
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7317942 |
Dynamic discrimination utilizing anti-tachy pacing therapy in an implantable medical device
A method and medical device for discriminating an arrhythmia that includes an input circuit sensing cardiac signals and a microprocessor identifying an event associated with the sensed cardiac...
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7305265 |
Heart treatment equipment for treating heart failure
In a heart treatment equipment provided with a stimulating mechanism for both the ventricles, the both ventricle stimulation is made optimized in order to inhibit the decrease of the cardiac output...
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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...
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7292886 |
Bifocal cardiac stimulation device and methods
A cardiac stimulation system for implantation in a patient is disclosed. The cardiac stimulation system comprises first and second electrodes configured for positioning in a bifocal arrangement. A...
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7289849 |
Atrial pacing therapy for treating mitral regurgitation
A method and apparatus are disclosed for treating mitral regurgitation with electrical stimulation. By providing pacing stimulation to the left atrium during ventricular systole, a beneficial...
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7286878 |
Multiplexed electrode array extension
An apparatus and method for selectively interacting with electrically excitable tissue of a patient are provided. The apparatus includes an implantable pulse generator having a number of output...
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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...
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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...
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7257443 |
Method and apparatus for detecting oscillations in cardiac rhythm with electrogram signals
A cardiac rhythm management device is configured to detect oscillations in cardiac rhythm by comparing electrogram signals during successive heart beats. Upon detection of electrical alternans, the...
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7254441 |
Fully inhibited dual chamber pacing mode
A pacing mode is provided, in one embodiment, that permits missed or skipped ventricular beats. The mode monitors a full cardiac cycle (A-A interval) for the presence of intrinsic ventricular...
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7233824 |
Secure and efficacious therapy delivery for an extra-systolic stimulation pacing engine
An extra-systolic stimulation (ESS) therapy addresses cardiac dysfunction including heart failure. ESS therapy employs atrial and/or ventricular extra-systoles via pacing-level stimulation to a...
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7231249 |
Methods, apparatus, and systems for multiple stimulation from a single stimulator
Methods, apparatus, and systems are provided to stimulate multiple sites in a heart. A controller senses electrical activity associated with sinus rhythm of the heart. A signal generator is...
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7212857 |
Implantable cardiac device for restoring inter-chamber synchrony and method
An implantable cardiac device returns activations of corresponding right and left chambers of a heart to inter-chamber synchrony. A sensing circuit senses intracardiac signals representing right...
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7184816 |
Cardiac stimulating and detecting device, system and method for identifying far field signals
In an implantable heart stimulating device, system and method, a control circuit has first and second circuits for sensing and pacing. The first circuit can be connected to a first electrode member...
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7174891 |
CPR mask with compression timing metronome and methods
A facial mask includes a mask body that is adapted to be coupled to a patient's face. A valve system is coupled to the mask body to permit the inflow of respiratory gasses into the mask body and to...
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7158828 |
System and method for timing synchronized pacing
A device and method for cardiac rhythm management in which a heart chamber is paced in accordance with sense signals from the opposite chamber or other distant cardiac site. The method is...
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7146214 |
Anti-tachycardia pacing based on multi-site electrograms
In one embodiment, a method includes sensing depolarizations of a heart at a plurality of different locations, and determining a sequence of the sensed depolarizations. The method may further...
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7142918 |
Apparatus and method for pacing mode switching during atrial tachyarrhythmias
A method for operating a cardiac pacemaker in which the mode of operation of the pacemaker is altered in response to detecting an episode of atrial tachycardia. In accordance with the invention,...
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7130686 |
Selection of preventative arrhythmia therapy based on patient specific histogram data
Methods and systems for providing cardiac therapy are described. In some embodiments, methods and systems are configured to deliver atrial tachyarrhythmia therapy by confirming that a patient is...
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7127289 |
Cardiac resynchronization system employing mechanical measurement of cardiac walls
Methods and devices are disclosed for employing mechanical measurements to synchronize contractions of ventricular wall locations. Accelerometers that may be placed within electrode leads are...
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7113823 |
Morphology-based optimization of cardiac resynchronization therapy
A method and apparatus for delivering cardiac resynchronization therapy (CRT) in which an evoked response electrogram is recorded during one or more cardiac cycles and used to aid in the selection...
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7113822 |
System and method for providing cardioversion therapy and overdrive pacing using an implantable cardiac stimulation device
Techniques are provided for coordinating the delivery of cardioversion therapy and overdrive pacing therapy to the heart of a patient, primarily to prevent the re-occurrence of atrial fibrillation...
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7079891 |
System and method for providing cardioversion therapy and overdrive pacing using an implantable cardiac stimulation device
Techniques are provided for coordinating the delivery of cardioversion therapy and overdrive pacing therapy to the heart of a patient, primarily to prevent the re-occurrence of atrial fibrillation...
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6952609 |
Cardiac stimulating device
An implantable cardiac stimulating device has an atrial pulse generator and an atrial sensor connected to an atrial electrode, for delivering stimulating pulses to the atrium and sensing events in...
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6842642 |
Adjustable cardiac resynchronization
Techniques are presented for providing adjustable cardiac resynchronization with an implanted medical device such as a pacemaker. For example, cardiac resynchronization may be provided during some...
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6813518 |
Method and system for terminating atrial fibrillation by inducing a ventricular extra-systole with combipolar pacing
A method and system for pacing cardiac tissue is provided. Atrial fibrillation is detected in the cardiac tissue. An area of the cardiac tissue is paced with at least one atrial electrode and...
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6738669 |
System and method for multichamber cardiac stimulation with ventricular capture verification using far-field evoked response
An implantable cardiac stimulation device and method automatically verify capture of one or both ventricular chambers by sensing a far-field signal in both atrial chambers. A far-field interval...
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6735472 |
Method of defibrillating a heart with electrode configurations including a left ventricular defibrillation electrode
An implantable universal pacing and defibrillating system provides efficacious sensing, pacing, and cardioversion/defibrillation in all four chambers of the heart. The system includes three leads...
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6625491 |
Active implantable medical device, in particular a pacemaker, defibrillator and/or cardiovertor of the multisite type, capable of detecting induced tachycardia
An active implantable medical device, in particular a pacemaker, defibrillator and/or cardiovertor of the multisite type, capable of detecting an induced tachycardia. Such a device is to be coupled...
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6597949 |
Mechanically powered external defibrillator
A defibrillator which contains a device for producing alternating voltage, a power factor controller for converting the alternating voltage to a direct voltage, and a device for converting the...
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6553258 |
System and method for managing refractory periods in a cardiac rhythm management device with biventricular sensing
A method and system for managing refractory periods in a cardiac rhythm management device configured for biventricular or biatrial sensing. Refractory periods for each channel of the pacemaker are...
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6480742 |
Pace counter isolation for cardiac resynchronization pacing
A system and method recording sensing and pacing events in a cardiac rhythm management device. The method may be particularly useful in assessment of pacing parameters for ventricular...
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6285906 |
Muscle contraction assist device
A method and apparatus for controlling a segment of excitable tissue, typically tissue of a heart, the segment having an intrinsic activity level. During a high phase, electrical energy of a given...
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6205357 |
Methods and apparatus for detecting and treating medical conditions of the heart
An implantable system for detecting electrical activity from a patient's heart comprises a first sensing electrode configured for positioning through the coronary sinus ostium and within a vein on...
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6134470 |
Method and apparatus for treating a tachyarrhythmic patient
An implantable anti-arrhythmia system which includes a spinal cord stimulator and an implantable heart rhythm monitor, coupled to control the spinal cord stimulator. The implantable heart monitor...
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5995871 |
System and method for cardioversion using scan stimulation
A method and system for applying therapeutic electrical pulses to the heart includes a plurality of spaced apart electrodes. Each electrode in electrical communication with a pulse generator and...
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5995870 |
Multi-site cardiac stimulator for the treatment of cardiac insufficiency by stimulation
A multi-site pulse generator for the treatment of cardiac insufficiencies by stimulation. In such a multi-site cardiac pulse generator, electrodes are placed in a plurality of distinct respective...
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5938687 |
Methods and apparatus for processing troubles of the atrial rhythm
A device and process for the processing of troubles of the atrial rhythm for an active implantable medical device. The device detects signals from at least the atrial cardiac activity, and...
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5865838 |
Low energy implantable atrial defibrillator using multiple electrodes and stimulation rates
In an apparatus for terminating atrial fibrillation using pulses having an energy content which is the same as the energy content of conventional pacing pulses, stimulation pulses are respectively...
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5713929 |
Arrhythmia and fibrillation prevention pacemaker using ratchet up and decay modes of operation
New pacing algorithm defines faster than indicated pacing rate during detection of PAC's/PVC's and reduces rate after awhile to a safety rate unless natural depolarizations are detected.
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5690611 |
Process for the treatment of atrial arrhythima using a catheter guided by shaped giding introducers
A process for the treatment of atrial arrhythmia by use of ablation and/or mapping procedures comprising ablating discrete ablation tracks within the left and right atrium of the heart by use of...
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5683428 |
Atrial tachycardia-detecting heart stimulator comparing a plurality of P-P intervals with a threshold
A heart stimulator for detecting atrial tachycardia, contains a control device to which are connected an atrial detector, having a blanking period, for detecting atrial events, a ventricular...
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