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US 7,548,783 B1Granted
Implantable cardiac stimulation device having a system for providing atrial therapy based on circadian variations and method
AssigneePacesetter, Inc.
InventorLaurence S. Sloman
Life of this patent
Estimating the term…
Abstract
An implantable cardiac stimulation device selects an arrhythmia therapy based upon the time of day. The device comprises an arrhythmia detector that detects an accelerated arrhythmia of a heart, and a data circuit that maintains a time record of cardiac cycle lengths developed during detected accelerated arrhythmias. A therapy circuit provides a selected therapy to the heart based upon the maintained time record of cardiac cycle lengths and the time of day.
Claims21
An implantable cardiac stimulation device comprising:
- an arrhythmia detector configured to detect an accelerated arrhythmia of a heart;
- a data circuit configured to, during a predetermined sampling period, measure a plurality of cardiac cycle lengths during detected accelerated arrhythmias, determine a time of day corresponding to each of the measured cardiac cycle lengths and generate a record comprising a count of the number of times a given measured cardiac cycle length occurs within a time-of-day period;
- and
- a therapy circuit configured to, subsequent to the predetermined sampling period and, upon detection of an accelerated arrhythmia, provide a selected therapy to the heart based upon the time of day of accelerated arrhythmia detection and the predetermined count corresponding to the time of day of accelerated arrhythmia detection.
1 more element
An implantable cardiac stimulation device comprising:
- an arrhythmia detector configured to detect an accelerated arrhythmia of a heart;
- a data circuit configured to, during a predetermined sampling period, measure a plurality of atrial cycle lengths occurring during detected accelerated atrial arrhythmias, determine a time of day corresponding to each of the measured atrial cycle lengths, and generate a record comprising a count of the number of times a given measured atrial cycle length occurs within a time-of-day period;
- and
- a therapy circuit configured to, subsequent to the predetermined sampling period and, upon detection of an accelerated atrial arrhythmia, provide a selected therapy to the heart based upon the time of day of accelerated atrial arrhythmia detection and the predetermined count corresponding to the time of day of accelerated atrial arrhythmia detection.
1 more element
In an implantable cardiac stimulation device, a method comprising:
- detecting accelerated arrhythmias of a heart;
- during a predetermined sampling period, measuring a plurality of cardiac cycle lengths during episodes of detected accelerated arrhythmias, determining a time of day corresponding to each of the measured cardiac cycle lengths, and generating a record comprising a count of the number of times a given measured cardiac cycle length occurs within a time-of-day period;
- and
- subsequent to the predetermined sampling period and, upon detection of an accelerated arrhythmia, providing a selected therapy to the heart based upon the time of day of accelerated arrhythmia detection and the predetermined count corresponding to the time of day of accelerated arrhythmia detection.
1 more element
Dependencies are inferred from the claim text.