Patent ID: 6345199
Filing Date: 2002-02-05
Classification: A61N

Abstract:
An implantable cardioverter, especially defibrillator, with a morphology detector (3) for detection and evaluation of electrocardiogram (EKG) signals for the purpose of discriminating between different tachycardia conditions of the heart, said morphology detector (3) comprising:a signal width detector (10), by which a width (w) of an EKG signal peak between every two successive crossings (d2) through an isoelectrical line (7) of the EKG can be measured, a threshold value discriminator (11) to determine whether the EKG signal between two said successive crossings (d1, d2) exceeds a defined threshold value (T, a1), and a comparator (12) for the signal width (ws), coupled to the signal width detector (10) and the threshold value discriminator (11), which compares the respective current value (w) of the signal width selected by the threshold value discriminator (11) and measured by the signal width detector (10) to a predetermined selection parameter for the purpose of discriminating between two different tachycardia conditions.