Patent ID: 6061592
Filing Date: 2000-05-09
Classification: A61B,A61N,G16H

Abstract:
A device (1) for detecting pathological tachycardia, in particular for use with an implantable device (2) for terminating tachycardias, having a classification device, responding to at least one electrical signal derived from the heart and processing at least one classification criterion, which if the classification criterion is met outputs an output signal (csfin) indicating pathological tachycardia,characterized bya plurality of classification devices (5-7) for checking various classification criteria (crit1-crit3) within one heart interval or on the basis of the evaluation of preceding heart intervals, which each, if one of the classification criteria is met, output one of a plurality of primary classification signals (cs1-cs3);a controllable counter (9) that is connected to the outputs of the classification devices via first logic means (8);means (8) for incrementing the counter state of the counter by a predetermined counting amount (""+5"") each time, if during a heart interval at least one of the primary classification signals appears;means for keeping the counter state constant or decrementing it by a predetermined counting amount (""-1"", ""-2"", ""-3""), if no primary classification signal appears within the heart interval; anddiscriminator means (11), which output the output signal (csfin) indicating the occurrence of pathological tachycardia if the counter state of the counter (9) exceeds a predetermined value (p).