To ignite plasmas at high flow velocity in ambient air is fairly complex. However, a number of applications – e.g. the disinfection of endoscopes or pressure hoses – do need this technology specifically. Therefore, based on the research done at Max Planck Institute a physical principle for an innovative plasma source which solves these obstacles – the so-called "Venturi principle" – was generated. Hereby, the air flows through a specially shaped nozzle and produces a vacuum in a given cavity without air flow. In this cavity, the plasma is ignited much easier and more cost-efficient. That way, the plasma diffuses into the air flow and can disinfect all areas downstream [Patent "Plasma Source" in Japan and USA; Patent application "Plasma source" in Europe].