Měření vlivu rušení EMC na činnost kardiostimulátoru

Abstract

The aim of this thesis is to assess the influence of electromagnetic non-ionizing radiation to cardiac pacemaker and the influence of communication between the cardiac pacemaker and the programmer. Electromagnetic compatibility is tested by direct induction of interference signal to the inputs of cardiac pacemaker according to ČSN EN 45502-2-1 standard and is also tested by generating of interference RF signals that are able to disable the communication using wireless ZIP telemetry, by the use of which cardiac pacemakers and defibrillators communicate with the programmer. For testing purposes a circuit of substitutive tissue has been assembled, to which a cardiac pacemaker has been connected, as well as the antenna for SRD band that radiated interference RF signal.

It has been proved that the cardiac pacemaker is resistant against co-phasally fed modulated electromagnetic field to the circuit of substitutive tissue with the connected cardiac pacemaker set to synchronized mode using the signal from inhibitive generator. Based on this the resistance of cardiac pacemaker has been proved against the interference which can get into the cardiac pacemaker electrodes and its case through the real tissue of the patient. The cardiac pacemaker behaviour change can endanger the patient’s health. It has also been proved that the wireless ZIP telemetry communication is sensitive to the interference on the frequencies in SRD band.