Patent ID: 9050006
Filing Date: 2015-06-09
Classification: A61B

Abstract:
1. A method of reconstructing cardiac activation information, the method comprising: processing, by a computing device, an analysis cardiac signal and a reference cardiac signal to determine whether there is a first point of change in a first selected-order derivative of the analysis cardiac signal with respect to a first selected-order derivative of the reference cardiac signal above a first threshold; processing, by the computing device, the analysis cardiac signal and the reference cardiac signal to determine whether there is a second point of change in a second selected-order derivative of the analysis cardiac signal with respect to a second selected-order derivative of the reference cardiac signal above a second threshold; and assigning an activation onset time in the analysis cardiac signal at a point based on a mathematical association of the first point of change and the second point of change to define cardiac activation indicating a beat in the analysis cardiac signal if it is determined that at least one of the first point of change is above the first threshold and the second point of change is above the second threshold.