Cardiac pacing using adjustable atrio-ventricular delays
First Claim
Patent Images
1. An apparatus, comprising:
- a programmable pulse generator; and
at least one sensor, coupled to the programmable pulse generator, to sense a plurality of cardiac events, wherein the programmable pulse generator is adapted to;
measure a first time interval between a first cardiac event and a second cardiac event that has an approximately constant timing relationship with respect to the first cardiac event and a predictable timing relationship to a delivery of pacing timed for maximizing peak positive left ventricular pressure change during systole (LV+dp/dt);
determine a delay time interval referenced to the first cardiac event using a predetermined mapping relationship of the first time interval to an approximately optimal delay time interval for maximizing LV+dp/dt; and
transmit pacing pulses using the delay time interval.
0 Assignments
0 Petitions
Accused Products
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.
528 Citations
18 Claims
-
1. An apparatus, comprising:
-
a programmable pulse generator; and
at least one sensor, coupled to the programmable pulse generator, to sense a plurality of cardiac events, wherein the programmable pulse generator is adapted to;
measure a first time interval between a first cardiac event and a second cardiac event that has an approximately constant timing relationship with respect to the first cardiac event and a predictable timing relationship to a delivery of pacing timed for maximizing peak positive left ventricular pressure change during systole (LV+dp/dt);
determine a delay time interval referenced to the first cardiac event using a predetermined mapping relationship of the first time interval to an approximately optimal delay time interval for maximizing LV+dp/dt; and
transmit pacing pulses using the delay time interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification