Patent ID: 8700139
Filing Date: 2014-04-15
Classification: A61B,G16H

Abstract:
1. A late potential detecting system comprising: an implantable medical device having an electrode input comprising at least N electrode terminals electrically connectable to at least N implantable electrodes arrangeable for detecting electrical activity of the myocardium at different parts of a ventricle of a heart, where N≧2, and a sampling unit connected to said electrode input and configured for recording, for each of N implantable electrodes, a sample set of electrogram samples representing detected electrical activity of said myocardium during a cardiac cycle; a sample synchronizer configured to time-synchronize said electrogram samples of said N sample sets; a sample processor configured to determine, for each of said N sample sets, magnitude potential representations of electrogram samples; a parameter processor configured to determine, based on said magnitude potential representations from said N sample sets, a parameter indicative of late potentials occurring during said cardiac cycle for said ventricle; a wavefront detector connected to said electrode input and configured for detecting an electrical wavefront at an implantable electrode of said N implantable electrodes and for generating a control signal upon detection of said electrical wavefront, wherein said sampling unit is responsive to said control signal and is configured for starting recording said N sample sets based on reception of a first control signal from said wavefront detector and triggering a stop of the recording of said N sample sets based on reception of a second, subsequent control signal from said wavefront detector; a heart rate estimator configured to estimate a heart rate of said heart based on electrical activity of said ventricle detected by at least one implantable electrode of said at least N implantable electrodes; and a time parameter processor configured to determine a time parameter T