US 7,321,794 B2 | ||
Method and system for treating atrial fibrillation | ||
James R Thacker, Eureka, Mo. (US); Kelly H McClure, Simi Valley, Calif. (US); Todd K Whitehurst, Santa Clarita, Calif. (US); and Philip H Lee, Santa Clarita, Calif. (US) | ||
Assigned to Advanced Bionics Corporation, Valencia, Calif. (US) | ||
Filed on Nov. 14, 2003, as Appl. No. 10/713,511. | ||
Claims priority of provisional application 60/426977, filed on Nov. 15, 2002. | ||
Prior Publication US 2004/0230231 A1, Nov. 18, 2004 | ||
Int. Cl. A61N 1/368 (2006.01) |
U.S. Cl. 607—50 [607/9] | 20 Claims |
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.
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