Patent ID: 6134469
Filing Date: 2000-10-17
Classification: A61N

Abstract:
An implantable cardiac-stimulation device, comprising at least one electrode for connection to heart muscle;a programmable electrical circuit for producing series of stimulation impulses which impinge upon the electrode; andan electronic memory connected to said electrical circuit, with which over several periods of the heart beat the electrical phenomena inherent in the heart-beat, systoles and their characteristic frequency fe, are recorded and stored;the electrical circuit evaluating the stored electrical phenomena and emitting corresponding series anti-tachycardiac and anti-bradycardiac stimulation impulses, wherein the electrical circuit is able, on detection of one or more successive extrasystoles not of the characteristic frequency fe, to produce a series of stimulation impulses (SI) of frequency fs(t) which, after the appearance of extrasystole(s), after programmable time interval ti between 50% and 100% of tmean between two characteristic systoles, begin at a higher frequency fsi and than steadily retarded, such that these is a steady decrease in frequency until the frequency fs(t) falls below the characteristic frequency or essentially corresponds to the characteristic frequency fe.