Biotronik Mess-und Therapiegeraete Gmbh & Co Ingenieurbuero Berlin

Biotronik Mess-und Therapiegerate Gmbh & Co Ingenieurburo Berlin

Volker Lang

Armin Bolz

An implantable stimulator for treating arrhythmic function disturbances of a heart, comprising; a stimulation electrode for transmitting stimulation pulses to the heart, a pulse generator that is connected to the stimulation electrode for generating the stimulation pulses, a control unit connected to the pulse generator for controlling the pulse emissions, a hemodynamic sensor for controlling the pulse emission as a function of the cardiac pumping performance, the hemodynamic sensor including; two measuring electrodes located in or in electrical contact with a blood vessel, for measuring the blood impedance dependent on the blood throughput, a signal generator that generates an AC voltage for generating a test signal for impedance measurement, an electrical measuring device connected to the twvo measuring electrodes for determining the blood throughput as a function of the measured electrical signal; and a blood throughput signal-analysis unit for recognizing an arrhythmic cardiac finction disturbance using the measured throughput quantity.

Implantable stimulator

A heart stimulator, having a stimulation pulse generator and output means nnected to it; a heart signal input stage for detecting evoked heart signals; an AV delay unit, connected on the output side to the stimulation pulse generator, for generating an AV interval between an atrial cardiac event or stimulation pulse, and a stimulation pulse output to the ventricle; an AV interval calculator, connected on the input side to the heart signal input stage and on the output side to the AV delay unit, for calculating the AV interval on the basis of a parameter of the heart signal; in this heart stimulator, the heart signal input stage is embodied for detecting the signal shape of evoked heart signals, and the AV interval calculator is embodied for calculating the AV interval on the basis of the heart signal shape detected.

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Herzogenaurach, Germany

Volker Lang