Patent ID: 7321794
Filing Date: 2008-01-22
Classification: A61N

Abstract:
1. An anti-arrhythmia system, comprising: a detection circuitry for sensing atrial fibrillation in a heart; a stimulus generator for delivering, in response to sensed atrial fibrillation, independently controlled stimulus through each of at least two electrodes for attaching to a target atrium; and electronic circuitry for deactivating delivery of stimulus through all of the electrodes in response to the detection circuitry detecting the termination of atrial fibrillation and then placing the anti-arrhythmia system in an atrial fibrillation suppression mode that then delivers multiple pulses to the target atrium during the same atrial contraction, wherein the suppression mode delivers the multiple pulses timed to suppress circus conduction in the target atrium to prevent onset of atrial fibrillation without causing contraction of the target atrium.