Abstract: A method of storing signals having a course over time in an implantable medical device, and/or transmitting the signals out of the device and out of the patient's body, with the course over time being detected in the device, particularly at predetermined time intervals with a constant sampling interval, and a sequence of signal samples being obtained therefrom, of which a partial quantity is stored and/or transmitted as the result of a selection made with a predetermined selection criterion, with the selection criterion being the first derivation of the course over time of the signals according to time, and with the selection being made such that the first derivation of the straight-line connection between an nth and the (n-1)th signal sample is determined and compared to the first derivation of the straight-line connection between the (n-1)th signal sample and the last-stored and/or last-transmitted signal sample, and the nth signal sample is then stored and/or transmitted as the new last signal sample exact

Abstract: An implantable medical apparatus delivers, in order to induce or terminate a tachyarrhythmia in a heart, a sequence consisting of several stimulation pulses having a time interval T.sub.t between each stimulation pulse. The first stimulation pulse is delivered after the lapse of a time interval T.sub.t, triggered by a spontaneous heart event If a detector in the apparatus detects a spontaneous heart event during any of the time intervals T.sub.t between the stimulation pulses during the attempt of inducing or terminating, the next stimulation pulse will be delivered after the lapse of the time interval T.sub.t from the detected spontaneous heart event. The apparatus also limits the duration of the sequence.

Abstract: An implantable medical device comprising means for stimulating physiological event of a living being with a stimulation intensity adaptable to the physical activity of the living being in view of analysis of a signal generated by a sensor means corresponding to the physical activity of the living being. The device includes a memory optionally operable in a write mode or a read mode to which, in the write mode, data corresponding to the chronological curve of the signal of the sensor means can be supplied for storage and, in the read mode, can be recalled for telemetric transmission to a separate data processing means.

Abstract: A method of storing signals having a course over time in an implantable medical device, and/or transmitting the signals out of the device and out of the patient's body, with the course over time being detected in the device, particularly at predetermined time intervals with a constant sampling interval, and a sequence of signal samples being obtained therefrom, of which a partial quantity is stored and/or transmitted as the result of a selection made with a predetermined selection criterion, with the selection criterion being the first derivation of the course over time of the signals according to time, and with the selection being made such that the first derivation of the straight-line connection between an nth and the (n?1)th signal sample is determined and compared to the first derivation of the straight-line connection between the (n?1)th nth signal sample and the last-stored and/or last-transmitted signal sample, and the nth (n?1)th signal sample is then stored and/or transmitted as the new last signal