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264 results about "Ventricular pacing" patented technology

Ventricular pacing refers to the electrical stimulation provided to the ventricles of the heart by a pacemaker. In most cases, ventricular pacing is known as episodic pacing and is provided by what’s known as a ventricular demand pacemaker.

System and method for communicating information using encoded pacing pulses within an implantable medical system

Techniques are provided for delivering cardiac pacing therapy to the heart of a patient using an epicardial left ventricular satellite pacing device in conjunction with primary pacemaker having at least a right ventricular pacing lead. In one embodiment described herein, right ventricular pulses generated by the primary pacemaker are detected by the satellite pacer and analyzed to determine the timing pattern employed by the primary pacemaker. The timing pattern is then used to specify the delivery times of epicardial left ventricular pulses so as to be synchronized with right ventricular pulses. In another embodiment described herein, the primary pacemaker modulates the right ventricular pulses to encode timing information, which is then detected and decoded by the satellite pacemaker. In this manner, biventricular pacing therapy, such as cardiac resynchronization therapy, may be conveniently delivered using a non-biventricular pacemaker in combination with an epicardial satellite pacer.
Owner:PACESETTER INC

Method and apparatus for using atrial discrimination algorithms to determine optimal pacing therapy and therapy timing

A system and method which employs atrial discrimination algorithms to distinguish between different atrial arrhythmias occurring in a patient for selecting an optimal pacing therapy corresponding to the type of arrhythmia identified. The invention may be implemented in a bradycardia pacemaker or other implantable cardiac device. In response to the detection of an atrial rate above the atrial tracking rate, discrimination criteria are applied to a detected atrial activity signal to distinguish between different types of supraventricular tachycardia, such as fast atrial flutter and other atrial flutter at a relatively slower rate, which may be occurring in the patient. The discrimination criteria may be, for example, rate-based or morphology based. The pacer is controlled to provide pacing therapy to a heart in a manner corresponding to the type of supraventricular tachycardia identified. For example, antitachycardia pacing may be provided to the heart in response to the detection of a relatively lower rate supraventricular tachycardia / other atrial flutter, whereas another pacing control, e.g., ventricular pacing, such as ventricular rate regulation or Rate Smoothing, may be applied if a more rapid rate supraventricular tachycardia / fast atrial flutter is identified. The output of an atrial discrimination algorithm may be tracked and the trend thereof used to improve therapy timing.
Owner:CARDIAC PACEMAKERS INC

Atrioventricular delay adjustment

InactiveUS6882882B2Improved hemodynamic performanceMaintain performanceHeart defibrillatorsHeart stimulatorsAtrioventricular canalCardiac pacemaker electrode
In a system that includes a ventricular pacemaker, the system adjusts an atrioventricular delay to synchronize the onset of isovolumetric contraction with the completion of ventricular filling. The system adjusts the atrioventricular delay as a function of electrical and pressure data from the heart. The system further adjusts the atrioventricular delay as a function of measurements of the time interval between a cardiac occurrence such as a ventricular pace and the completion of ventricular filling. The system may also adjust the atrioventricular delay as a function of the heart rate.
Owner:MEDTRONIC INC

Method and apparatus for optimizing ventricular synchrony during DDD resynchronization therapy using adjustable atrio-ventricular delays

A pacing system for providing optimal hemodynamic cardiac function for parameters such as ventricular synchorny or 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 for optimal timing of a ventricular pacing pulse. The system providing an option for near optimal pacing of multiple hemodynamic parameters. The system deriving the proper timing using electrical or mechanical events having a predictable relationship with an optimal ventricular pacing timing signal.
Owner:CARDIAC PACEMAKERS INC
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