一种新型口腔综合治疗台水路消毒系统装置的研发与消毒效果评价

Development and Assessment of Disinfection Effect of a New Waterway Disinfection System Device for Dental Unit Waterlines

目的根据目前口腔综合治疗台水路(Dental Unit Waterlines,DUWLs)的微生物污染以及消毒方法的现状,开发一种外置式的程序控制自动DUWLs消毒装置,解决目前医院在用DUWLs的自动消毒问题,以提升临床口腔用水的安全性,保障患者安全,同时减轻医护人员工作量。方法不改变现有口腔综合治疗台水、气及电路结构,通过程序控制实现消毒流程和各种消毒液的配比自动化。同时,利用口腔综合治疗台的气源将消毒液注入DUWLs内各管路中,以此对DUWLs各狭小管路内消毒及细菌的滋长进行抑制。通过采集口腔综合治疗台消毒前后的DUWLs水样样本,对细菌总数的变化进行比较。结果在使用自动DUWLs消毒装置对DUWLs进行消毒后,通过高速手机及漱口水水样样本的结果可看出DUWLs中的细菌菌落总数相对于消毒前明显减少,达到供水要求。消毒后与消毒前的数据差异具有统计学意义(P<0.05)。结论使用DUWLs自动消毒装置一方面可有效减少DUWLs的细菌污染,为患者提供安全地临床用水;另一方面比传统手工消毒更加便捷、全面。

Objective According to the current status of microbial contamination and disinfection methods of dental unit waterlines(DUWLs),an external program-controlled automatic DUWLs disinfection device has been developed to solve the problem of automatic disinfection of DUWLs in hospitals to improve the safety of clinical oral water,ensure patient safety,and reduce the workload of medical staff.Methods On the premise of not changing the water,gas and circuit structure of the oral comprehensive treatment table,the automation of disinfection process and the proportion of various disinfectants was realized by program control.At the same time,the disinfection solution was injected into the pipelines of DUWLs by using the air source of the oral comprehensive treatment table,so as to inhibit the disinfection and the growth of bacteria in the narrow tubules of DUWLs.The changes in the total number of bacteria were compared by collecting water samples of DUWLs before and after disinfection.Results After the automatic DUWLs disinfection device was used to disinfect DUWLs,the results of high-speed mobile phone and mouthwash water samples showed that the total number of bacterial colonies in DUWLs was significantly reduced compared to disinfection before,meeting the water supply requirements.The difference between the data after disinfection and before disinfection is statistically significant(P<0.05).Conclusion Using the DUWLs automatic disinfection device can effectively reduce the bacterial contamination of DUWLs and provide patients with safe clinical water,on the other hand,it is more convenient and comprehensive than traditional manual disinfection.