Pacemaker with improved detection of atrial fibrillation

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United States of America Patent

PATENT NO 5720295
SERIAL NO

08730748

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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In a dual chamber implantable pacemaker, the peak amplitude of the atrial intrinsic signals are monitored and used to generate a short term and a long term indicia indicative of the intrinsic signals' variability and deviation from normal sinus rhythm peak amplitudes. The two indicia are combined to generate a single indicia which is then used to categorize the state of the atrium as one of several conditions such as flutter/flubber, coarse atrial fibrillation or fine atrial fibrillation. The categorization is used by a microcontroller for generating the proper pacing pulses and may also be used as a criteria for mode switching between a first mode wherein synchrony between the atrium and ventricle is maintained and a second mode pacing is performed at a fixed rate or one determined by the metabolic indicator.

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Patent Owner(s)

Patent OwnerAddress
TELECTRONICS PACING SYSTEMS INC7400 SOUTH TUCSON WAY ENGLEWOOD CO 80112

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Greenhut, Saul E Aurora, CO 119 5655
Nappholz, Tibor A Englewood, CO 42 5643

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