Patent ID: 6915158
Filing Date: 2005-07-05
Classification: A61B,A61N

Abstract:
1. A method for automatically creating a template for a morphology-sensitive cardiac signal detector, comprising the steps of: recording an IEGM signal from a patient for a predetermined duration, and filtering said IEGM signal in a filter, thereby obtaining a filtered IEGM signal; storing said filtered IEGM signal, thereby obtaining a stored IEGM signal; analyzing said stored IEGM signal to identify all signal deflections in said IEGM signal which exceed a predetermined level, to obtain preliminarily identified signal deflections; analyzing respective time intervals between said preliminarily identified deflections and selecting deflections, as selected deflections, from among said preliminarily identified deflections dependent on said time interval; categorizing said selected deflections into a predetermined number of classes; determining at least one of said classes as most representative for a QRS complex; creating a QRS template from the selected deflections in said at least one of said classes; and initializing said filter with said template for filtering subsequent IEGM signals using said template.