| US 7,574,258 B2 | ||
| Cardiac therapy triggered by capture verification | ||
| Haris J. Sih, Minneapolis, Minn. (US); Scott A. Meyer, Rochester, Minn. (US); and Paul A. Haefner, Circle Pines, Minn. (US) | ||
| Assigned to Cardiac Pacemakers, Inc., St. Paul, Minn. (US) | ||
| Filed on Dec. 14, 2005, as Appl. No. 11/300,674. | ||
| Application 11/300674 is a division of application No. 10/377257, filed on Feb. 28, 2003. | ||
| Prior Publication US 2006/0095082 A1, May 04, 2006 | ||
| Int. Cl. A61N 1/08 (2006.01); A61N 1/39 (2006.01) | ||
| U.S. Cl. 607—5 [607/4; 607/9] | 20 Claims |
| 1. A system for delivering therapy to a heart, comprising:
a lead system, the lead system comprising electrodes and extending into the heart;
pulse generator circuitry coupled to the lead system, the pulse generator circuitry configured to generate pulses to electrically
stimulate the heart;
a detector system, the detector system coupled to the lead system and configured to sense cardiac signals transmitted through
the lead electrodes and to detect atrial arrhythmia;
a control system coupled to the detector system and the pulse generator, the control system configured to, following detection
of a tachyarrhythmic episode,
control the generation of pace pulses during the tachyarrhythmic episode,
form a morphological feature set from cardiac signals sensed following one or more of the pace pulses;
detect entrainment of cardiac activity if features of a predetermined number of the cardiac signals sensed following the pace
pulses are consistent with the morphological feature set,
and trigger delivery of a cardioversion/defibrillation stimulation in response to detection of entrainment.
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