Efficacy of spray flushing in the reprocessing of flexible endoscopes:A randomized controlled trial  

作　　者：Jiang Du Miao Zhang Si-Yuan Tao Lian-Song Ye Hui Gong Bing Hu Qiong-Ying Zhang Fu Qiao 

机构地区：[1]Department of Gastroenterology and Hepatology,West China Hospital,Sichuan University,Chengdu 610041,Sichuan Province,China [2]West China School of Nursing,Sichuan University,Chengdu 610041,Sichuan Province,China [3]Department of Infection Control,West China Hospital,Sichuan University,Chengdu 610041,Sichuan Province,China [4]Digestive Endoscopy Medical Engineering Research Laboratory,West China Hospital of Sichuan University,Chengdu 610041,Sichuan Province,China

出　　处：《World Journal of Gastroenterology》2024年第31期3680-3688,共9页世界胃肠病学杂志（英文版）

基　　金：West China Nursing Discipline Development Special Fund Project,No.HXHL21029。

摘　　要：BACKGROUND Commonly used cleaning brushes in the reprocessing of flexible endoscopes often cause damage within the working channels.AIM To develop a spray flushing system to achieving effective cleaning of the working channels while minimizing damage.METHODS This prospective study included 60 used endoscopes and 60 Teflon tubes randomly divided into a control group(n=30)and an experimental group(n=30).The material of Teflon tubes was the same as that of the endoscope working channel.Endoscopes in the control group were manually cleaned using traditional cleaning brushes,while those in the experimental group were cleaned using the newly developed spray flushing system.ATP levels,cleanliness,and microbiological testing of the working channels were measured.Additionally,Teflon tubes in the control group underwent 500 passes with a cleaning brush,while those in the experimental group were subjected to the spray flushing system,and channel damage was evaluated.RESULTS The ATP levels(RLU)in the two groups were 32.5(13-66)and 26(16-40),respectively(P>0.05).Cleanliness scores were 1.5(1-2)and 1(1-2),respectively(P>0.05).Debris was found in 73.3%of the control group,which was significantly higher than 46.7%in the experimental group(P<0.05).Microbiological tests for both groups yielded negative results.Teflon tube damage in the control group was rated at 4(4-5.25),which was significantly higher than in the experimental group 4(3-4)(P<0.01).CONCLUSION The spray flushing system demonstrated superior efficacy in removing debris and resulted in less damage to the endoscope working channels compared with traditional cleaning brushes.

关 键 词：ENDOSCOPE ATP Flexible endoscope DISINFECTION REPROCESSING 

分 类 号：TH77[机械工程—仪器科学与技术]