ABSTRACT

Endoscopes are flexible medical instruments that require a high-level disinfection protocol. This study aimed to develop a fluid-dynamic system with ozonated water to obtain high-level disinfection. A colonoscope replica with an internal flexible polytetrafluoroethylene (PTFE) tube was made. The set was then contaminated, washed, and disinfected with ozonated water. The replica was placed in a tank with a fluid-dynamic circuit. The endoscope was submerged into the tank and ozonated water was pumped through the working channel. Quantitative microbiological tests were carried out between the washing stage and disinfection in the fluid-dynamic system with ozonated water. The results indicated that the ozone concentration curve in the water from the 27- liter main tank reached the value of 0.95 mg/L after 20 minutes. No bacterial growth was detected after the replica remained in the hydrodynamic system with ozonated water for 15 minutes. The results showed that the fluid-dynamic system using ozonated water is promising as it enables high-level disinfection of the colonoscope.

摘要

内窥镜是灵活的医疗器械，需要高水平的消毒方案。本研究旨在开发一种使用臭氧水的流体动力系统，以获得高水平的消毒效果。制作了带有内部柔性聚四氟乙烯 (PTFE) 管的结肠镜复制品。然后用臭氧水对该装置进行污染、清洗和消毒。该复制品被放置在带有流体动力回路的罐中。将内窥镜浸入水箱中，并将臭氧水泵入工作通道。在使用臭氧水的流体动力系统中的清洗阶段和消毒之间进行了定量微生物测试。结果表明，27升主水箱水中的臭氧浓度曲线在20分钟后达到0.95mg/L的值。复制品在含有臭氧水的水动力系统中放置 15 分钟后，未检测到细菌生长。结果表明，使用臭氧水的流体动力系统很有前景，因为它能够对结肠镜进行高水平消毒。