CARDIAC PACING SYSTEM FOR PREVENTION OF VENTRICULAR FIBRILLATION AND VENTRICULAR TACHYCARDIA EPISODE
First Claim
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1. A system, comprising:
- a controller, connected to a sense and pulse delivery module, the controller receiving signals from one or more electrodes and providing pulse instructions for delivery of pulses to the one or more electrodes;
an event window generator, connected to the controller, producing event windows for ventricular contraction events;
one or more sensors connected to the controller; and
a morphology detection system, connected to the controller, for detecting abnormal complexes,wherein the event windows are a function of ventricular rate and ventricular rate trajectory over a plurality of intervals between ventricular contraction events, signals from the one or more sensors, and information from the morphology detection system.
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Abstract
A cardiac pacing system preventing short-long-short pacing sequences. The system providing pacing pulses where necessary. The system having dynamic event window generation to adapt to changes in heart rate. The event window adaptable to process a number of intervals. The system including provisions for other inputs, such as sensor and morphology detection. The system adaptable for single mode and dual mode applications. The system also applicable to long pause prevention in atrial pacing and ventricular pacing.
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Citations
20 Claims
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1. A system, comprising:
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a controller, connected to a sense and pulse delivery module, the controller receiving signals from one or more electrodes and providing pulse instructions for delivery of pulses to the one or more electrodes; an event window generator, connected to the controller, producing event windows for ventricular contraction events; one or more sensors connected to the controller; and a morphology detection system, connected to the controller, for detecting abnormal complexes, wherein the event windows are a function of ventricular rate and ventricular rate trajectory over a plurality of intervals between ventricular contraction events, signals from the one or more sensors, and information from the morphology detection system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a controller, connected to a sense and pulse delivery module, the controller receiving signals from one or more electrodes and providing pulse instructions for delivery of pulses to the one or more electrodes; one or more sensors, connected to the controller; a morphology detection system, connected to the controller, for detecting complexes indicative of cardiac arrhythmia; and an event window generator, connected to the controller, producing event windows for ventricular contraction events, the event windows each being a function of a plurality of intervals between ventricular contraction events and one or more of signals from the one or more sensors and signals from the morphology detection system, wherein the controller produces an instruction for providing a ventricular contraction following an event from which one of the event windows begins if a ventricular contraction event is not detected during the one of the event windows. - View Dependent Claims (10, 11, 12, 13, 14, 15, 20)
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16. A method, comprising:
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monitoring a plurality of ventricular contraction events including a last ventricular contraction event; determining a plurality of intervals between the plurality of ventricular contraction events; generating one or more time derivatives using the plurality of intervals; generating an event window using the plurality of intervals and at least one of the one or more time derivatives, the event window beginning from the last ventricular contraction event; monitoring for a current ventricular contraction event during the event window; and if a current ventricular contraction event is not detected during the event window, providing an instruction to a pulse generating device to produce a ventricular contraction. - View Dependent Claims (17, 18, 19)
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Specification