Patent ID: 9220427
Filing Date: 2015-12-29
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 a first point of change in a derivative of the analysis cardiac signal with respect to a derivative of the reference cardiac signal, the derivative of the analysis cardiac signal and the derivative of the reference cardiac signal being selected from zero, first and second order derivative; processing, by the computing device, the analysis cardiac signal and the reference cardiac signal to determine a second point of change in a different derivative of the analysis cardiac signal with respect to a different derivative of the reference cardiac signal, the different derivative of the analysis cardiac signal and the different derivative of the reference cardiac signal being selected from zero, first and second order derivative; 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.