Multifunctional dbd-based ozone sterilizer with ultrasonic cavitation for low-temperature treatment of medical tools

The development of a dielectric barrier discharge (DBD) sterilizer for cleaning, disinfection, and low-temperature sterilization in water saturated with ozone is described. The sterilizer consists of an ozone generator based on glow barrier dielectric discharge with flat electrodes covered with dielectric operated at a high-voltage power supply of 250 W. The 2.5-L sterilization bath is equipped with a 100-W ultrasound source to provide additional cleaning of complexly shaped objects. High ozone concentrations in water (up to 10 mg/L) are necessary for effective and complete sterilization of tools and is achieved by dissolving ozone in cooled water (∼ 10–15°C). The ozone concentration at the output of the ozone generator is 25 mg/L. The main characteristics of the ozone sterilizer with ultrasonic cavitation are given, and the effectiveness of this sterilizer in inactivating a number of microbiological objects is shown. © 2021 by Begell House, Inc. www.begellhouse.com.