Human health risk evaluation of a microwave-driven atmospheric plasma jet as medical device

In summary, the results of the experiments indicate a high potential of the plasma jet to be used as a medical device exhibiting low gas temperatures up to 34 °C. The calculated leakage currents are mostly below the 10 µA threshold. The limiting UV exposure duration for the APJ with a calculated maximum effective irradiance of 2.6 µW/cm2 is around 19 min, based on the exposure limits of the international commission on non-ionizing radiation protection guidelines (ICNIRP) [2]. A significant ozone concentration was observed mainly in the axial effluent gas flow. Ozone concentration strongly decreases with increasing distance from the plasma source exit nozzle.