Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China.
West China School of Nursing, Sichuan University, Chengdu 610041, Sichuan Province, China.
World J Gastroenterol. 2024 Aug 21;30(31):3680-3688. doi: 10.3748/wjg.v30.i31.3680.
Commonly used cleaning brushes in the reprocessing of flexible endoscopes often cause damage within the working channels.
To develop a spray flushing system to achieving effective cleaning of the working channels while minimizing damage.
This prospective study included 60 used endoscopes and 60 Teflon tubes randomly divided into a control group ( = 30) and an experimental group ( = 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.
The ATP levels (RLU) in the two groups were 32.5 (13-66) and 26 (16-40), respectively ( > 0.05). Cleanliness scores were 1.5 (1-2) and 1 (1-2), respectively ( > 0.05). Debris was found in 73.3% of the control group, which was significantly higher than 46.7% in the experimental group ( < 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) ( < 0.01).
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.
在软性内镜的再处理过程中，常用的清洗刷常导致工作通道内的损伤。
开发一种喷雾冲洗系统，在最小化损伤的同时实现工作通道的有效清洗。
这项前瞻性研究纳入了 60 个使用过的内镜和 60 个特氟龙管，随机分为对照组（n=30）和实验组（n=30）。特氟龙管的材料与内镜工作通道相同。对照组的内镜采用传统清洗刷手动清洗，实验组采用新开发的喷雾冲洗系统清洗。测量工作通道的 ATP 水平、清洁度和微生物检测。此外，对照组的特氟龙管经过 500 次清洗刷清洗，实验组则经过喷雾冲洗系统，评估通道损伤。
两组的 ATP 水平（RLU）分别为 32.5（13-66）和 26（16-40）（>0.05）。清洁度评分分别为 1.5（1-2）和 1（1-2）（>0.05）。对照组有 73.3%发现有碎片，明显高于实验组的 46.7%（<0.05）。两组的微生物检测结果均为阴性。对照组的特氟龙管损伤评分 4（4-5.25）明显高于实验组的 4（3-4）（<0.01）。
与传统清洗刷相比，喷雾冲洗系统在去除碎片方面效果更好，且对内镜工作通道的损伤更小。
