Patent ID: 6223072
Filing Date: 2001-04-24
Classification: A61B,A61N,H01L

Abstract:
A method for obtaining from a patient's heart data useful for on-line determining of the parameters of an alert time window in an excitable tissue control device, the method comprising the steps of:Applying electrodes to a first cardiac site and a second cardiac site of said patient and electrically connecting said electrodes to a data collecting device;Operating said device under a plurality of different cardiac conditions to obtain a plurality of different histogram data sets, each histogram data set of said plurality of histogram data sets represents a cumulative time distribution histogram of cardiac depolarization events detected at said second cardiac site in a plurality of cardiac beats, each histogram data set of said plurality of histogram data sets is associated with a plurality of histogram parameters, said histogram parameters have values indicative of the cardiac conditions common to said plurality of cardiac beats used to obtain said histogram data set, said histogram parameters include a sensitivity level parameter having a value indicative of the detection sensitivity level used for detecting said cardiac depolarization events of said plurality of cardiac beats at said second cardiac site; andProcessing said plurality of histogram data sets to compute a set of data usable for on-line determination of the parameters of said alert time window.