Abstract: An ablation arrangement (1) for the targeted production of local lesions in living tissue inside the body, particularly inside the heart, comprising at least one energy source (15), a plurality of energy uncoupling elements (11b to 11g) that are attached to a holding element (11a), a plurality of energy transmission lines (19.1) that connect the energy source or the energy sources to the energy uncoupling elements and switching elements (9.3) that are assigned to the energy transmission lines for setting up or interrupting a connection between the energy source and respectively one energy uncoupling element, with program control means (9.1) for a time-sequential actuation of at least some of the switching elements according to an ablation program.

Abstract: A rate-adaptive pacemaker, comprising a stimulation pulse generator and tewith connected output means for stimulating at least the heart ventricle of a heart-signal input stage in order to detect the signal shape of evoked heart signals, particularly the morphology of the ventricular evoked response VER, also comprising a rate-calculation unit that is connected on the input side with the heart signal input stage and on the output side with the stimulation pulse generator, for calculating the stimulation rate based on the physiological stress on the pacemaker carrier and for emitting a rate-control signal, wherein the rate calculation device generates the rate-control signal on the basis of the heart signal shape detected at the input stage. The rate-calculation unit has a signal amplitude processing unit for calculating the rate-control signal upon responding to heart signal amplitude values at predetermined times during a specified heart cycle, in particular the last preceding heart cycle.