Cardiac pacing using adjustable atrio-ventricular delays
AssigneeCardiac Pacemakers, Inc.
InventorsJiang Ding, Yinghong Yu, Andrew P. Kramer, Julio Spinelli
Life of this patent
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Abstract
A pacing system for providing optimal hemodynamic cardiac function for parameters such as contractility (peak left ventricle pressure change during systole or LV+dp/dt), or stroke volume (aortic pulse pressure) using system for calculating atrio-ventricular delays for optimal timing of a ventricular pacing pulse. The system providing an option for near optimal pacing of multiple hemodynamic parameters. The system deriving the proper timing using electrical or mechanical events having a predictable relationship with an optimal ventricular pacing timing signal.
Claims11
A method, comprising:
- sensing an atrial electrical event P;
- monitoring a signal representing ventricular mechanical activity;
- determining a ventricular mechanical event, Y, from the signal;
- determining a time interval, PY, between P and Y;
- determining an atrio-ventricular delay time interval (AVDc) approximately optimize maximizing ventricular pressure change (LV+dp/dt) with the time interval, PY;
- and
- delivering a pacing pulse using the atrio-ventricular delay approximately optimized for maximizing ventricular pressure change.
Dependencies are inferred from the claim text.