The Application of Mechanical Thermal Disinfection in Sterilizing Oxygen Wet Bottle

Objective:To investigate the advantages of mechanical thermal disinfection in sterilizing oxygen wet bottles in department of supply.Methods:320 recovery oxygen wet bottles were randomly divided into the experimental group and the control group.In the experimental group,the oxygen wet bottles were sterilized by mechanical thermal disinfection and dried by drier.In the control group,the oxygen wet bottles were soaked in 500mg/L chlorine disinfection and natural dry.40 samples were randomly selected for bacteriological culture in the 1,3,5,7 days after the disinfection in each group to observe the effects of two methods of sterilization.We also compared two methods of time.Results:(1)All samples were qualified(No bacterial growth /the total number of bacterial growth or bacterial colonies should be ≤20cfu/100cm2)and consistent with monitoring requirements on the item surface disinfection in 《Standard disinfection in hospitals》in the 1,3,5,7 days after the disinfection in the experimental group.(1)80 samples were qualified in the 1 and 3 days after the disinfection in the control group,but there were 6 and 8 unsatisfactory samples(The number of colonies of bacteria culture20cfu/100cm2)in the 5 and 7 days after the disinfection in the control group.Compared with the experimental group,P≤0.05.(3)Disinfection time in the experimental group is 80min,the control grou is 220min.Conclusion:Compared with the chemical disinfection,the mechanical thermal disinfection is more effective and less time-consuming in sterilizing oxygen wet bottles and worths promoting.