Devices for pre-sterilszation treatment of endoscopes by ozone and ultrasound

摘要

In the article, the specially designed devices for pre-sterilization treatment of laparoscopic, endoscopic and other long-length surgical equipment from organic compounds (blood and alkali) in ultrasonic tank-container with ozone has been proposed. The first device was equipped with a bath (up to 30 l), ten ultrasonic emitters with a total power 300 W, and four modular ozone generators based on dielectric barrier discharges. The second device equipped with 3.5 liter volume bath was also designed having a glass pipe 1 meter long, 8 cm in diameter with one ozone module and immersion ultrasonic emitter. During treatment, the ozonized water was injected both into the internal and external surfaces of endoscopes. The output ozone concentration reached 30 mg/l with dry air flow rate 0.3 l/min. Phenolphthalein test and "Delatest" solution method determined the remains of alkali and blood, respectively.