Patent ID: 7616993

Claim:
A heart stimulator for stimulating at least a ventricle of a heart, the heart stimulator comprises: a stimulation pulse generator adapted to generate electric stimulation pulses and being connected or being connectable to at least a ventricular stimulation electrode for delivering electric stimulation pulses to at least said ventricle of the heart, a sensing stage connected or being connectable to an electrode for picking up electric potentials inside at least said ventricle of a heart, said sensing stage being adapted to sense an excitation or a contraction of a heart chamber, a control unit that is connected to a memory, to said sensing stage and to said stimulation pulse generator, wherein said memory is adapted to store parameters defining a Bezier function determining the relationship between AV-delay values and heart rate and the control unit is adapted to determine an actual AV-delay based on an actual intrinsic heart rate or an actual stimulation rate and a non-linear smoothing interpolation between said parameters stored in said memory.