医疗机构场景下高能脉冲紫外线消毒设备消毒效果评价

Evaluation of disinfection effect of high-energy pulse ultraviolet disinfection equipment in medical institution settings

目的评价医疗机构场景下高能脉冲紫外线消毒设备消毒效果。方法分别通过现场试验和实验室试验进行消毒效果评价。其中,现场试验选择9个科室135个高频接触点位,消毒前后采样,比较75%酒精湿巾擦拭消毒、高能脉冲紫外消毒机器人消毒和高能脉冲紫外手持消毒仪消毒效果;实验室试验将模拟试验桌面的30个染菌区块置于紫外线垂直照射下,计算消毒前后细菌杀灭率。结果现场试验中75%酒精湿巾擦拭、高能脉冲紫外消毒机器人和高能脉冲紫外手持消毒仪细菌杀灭率分别为94.99%、91.53%和95.94%,差异有统计学意义,其中高能脉冲紫外手持消毒仪的消毒效果好于高能脉冲紫外消毒机器人(P<0.05)。实验室试验中高能脉冲紫外手持消毒仪对染菌载体上金黄色葡萄球菌和大肠杆菌的杀灭对数值均>3.00,模拟现场试验中高能脉冲紫外手持消毒仪对物体表面样本上金黄色葡萄球菌的杀灭对数值为4.99。结论高能脉冲紫外手持消毒仪和高能脉冲紫外消毒机器人消毒效果均较好,与常规75%酒精湿巾擦拭消毒效果相近。

Objective To evaluate the disinfection effect of high-energy pulse ultraviolet disinfection equipment in medical institution settings.Methods The disinfection effect was evaluated through field tests and laboratory tests.Among them,135 high-frequency contact points were selected from nine departments in the field test.Samples were collected before and after disinfection,and the disinfection effects of 75%alcohol wipes wiping disinfection,high-energy pulse ultraviolet disinfection robot disinfection and high-energy pulse ultraviolet handheld disinfection instrument were compared.In the laboratory test,30 infected areas of the simulated test table were exposed to vertical ultraviolet irradiation and the bacterial-killing rate before and after disinfection was calculated.Results In the field test,the bacteria-killing rates of 75%alcohol wipes,high-energy pulse ultraviolet disinfection robot and high-energy pulse ultraviolet handheld disinfection instrument were 94.99%,91.53%and 95.94%,respectively,and the difference was statistically significant.The disinfection effect of the high-energy pulse ultraviolet handheld disinfection instrument was better than that of the high-energy pulse ultraviolet disinfection robot(P values<0.05).In the laboratory test,the killing log value of Staphylococcus aureus and Escherichia coli on the carrier were both greater than 3.00.In the simulated field test,the killing log value of Staphylococcus aureus on the surface samples were 4.99.Conclusion Both the high-energy pulse ultraviolet handheld disinfection instrument and the high-energy pulse ultraviolet disinfection robot have good disinfection effects,which are similar to the disinfection effects of conventional 75%alcohol wipes.