Implantable cardiac stimulation device having optimized...

Details Implantable cardiac stimulation device having optimized... Implantable cardiac stimulation device having optimized...

2006-03-28

2006-03-28

Jastrzab, Jeffrey R. (Department: 3762)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

Reexamination Certificate

active

07020524

ABSTRACT:
An improved device and method for performing automatic capture/threshold determination that is particularly useful in an implantable cardiac stimulation device. While conventional devices use a fixed shortening of the AV/PV delays during automatic capture/threshold determinations, any shortening can unnecessarily cause discomfort to patients with heart blocks and unnecessarily diminish the atrial kick for other patients. Accordingly, embodiments of the present invention periodically measure the AR/PR conduction times and tabulate and/or otherwise process this data. Preferably, these measured conduction times are also correlated with the current heart rate. Finally, when an automatic capture/threshold determination occurs, this measured conduction data, which corresponds to this patient, is used to adjust the AV/PV delays while minimizing patient discomfort and adverse hemodynamic effects. Alternatively, the AV/PV delays may be manually programmable by a medical practitioner.

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Pacesetter®, “AFFINITY™ DR Model 5330 L/R, Dual-Chamber Pulse Generator with AUTOCAPTURE™ Pacing System”, 1998 St. Jude Medical, Inc.

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