Patent ID: 8639334
Filing Date: 2014-01-28
Classification: A61N

Abstract:
1. A system, comprising: a device programmer having sensing circuitry connected to a first electrode adapted for placement on the body of a patient and adapted for generating a surface electrocardiogram; an implantable device in communication with the device programmer and having sensing circuitry connectable to a second electrode adapted for placement at a myocardial stimulation site and adapted for generating an electrogram; wherein the device programmer is programmed to measure a time interval between a deflection of the surface electrocardiogram generated by the first electrode and a deflection of the electro gram generated by the second electrode during an intrinsic systolic cycle; wherein the device programmer is further programmed to compare the measured time interval to a threshold and to compute an atrioventricular delay for delivering pacing pulses to the myocardial stimulation site in accordance with whether the interval is less than or greater than the threshold.