It is suitable for the sterilization of diagnostic and therapeutic instruments that are not heat and moisture resistant, such as electronic instruments, optical instruments and other diagnostic and therapeutic instruments, and it is not suitable for the sterilization of cloth, paper, water, oils, powders and other materials.
Second, the sterilization method1. In the special low-temperature hydrogen peroxide plasma sterilizer, a sterilization process contains a number of cycles, each cycle includes vacuum, hydrogen peroxide injection, diffusion, plasma ionization, ventilation of five steps.
2. Follow the hydrogen peroxide low-temperature plasma sterilization manufacturer's operating instructions, according to the type of sterilized items, packaging, loading and mode of different, select the appropriate sterilization program, each program should meet the corresponding temperature, hydrogen peroxide concentration and dosage, sterilization time and other sterilization parameters.
Third, the monitoring method:1. Physical monitoring method: each sterilization should be continuously monitored and recorded for each sterilization cycle of the critical parameters such as cabin pressure, temperature, hydrogen peroxide concentration, power input and sterilization time and other sterilization parameters. Sterilization parameters are in accordance with the requirements of the sterilizer's instructions or operation manual.
2. Chemical monitoring method: each sterilized items outside the package should be used outside the package of chemical indicators, as a sign of the sterilization process; each package of the most difficult to sterilize the location of the package placed in the chemical indicators, through the observation of its color changes, to determine whether it is to meet the requirements of sterilization.
3. Biological monitoring method:
3.1 Test strain: Lipobacillus thermophilus bacillus
3.2 Monitoring method: the self-contained bio-indicator (Lipobacillus thermophilus bacillus slices) placed in the bio-test packages, placed in the most difficult to sterilize the parts of the sterilizer, after a sterilization cycle, remove the culture, the culture time of 56 ° C ± 1 ° C, the culture time according to the self-contained biological indicators. The incubation time should be according to the instructions of the self-contained bio-indicator, and a positive control should be set up at the same time to observe the incubation results. If the biomonitoring is performed several times a day, and the bioindicator is the same batch number, then only one positive control can be set.
3.3 Monitoring frequency: at least once a day.
1. Sterilized items should be clean and dry.
2. The packaging materials of the sterilized items should meet the requirements of YY/T 0698.2 for nonwoven fabrics and YY/T 0698.5 for composite combination bags.
3. Sterilization packages should not be stacked and should not touch the inner wall of the sterilization chamber.
4. The sterilizer should obtain the sanitary license approval for sterilized products from the Ministry of Health.
5. new installation, shift, overhaul, sterilization failure, packaging materials or sterilized items change, the sterilization effect should be reevaluated, including the use of physical monitoring method, chemical monitoring method and biological monitoring method for monitoring (repeated three times), after passing the monitoring, the sterilizer can be used.
References:
WS/T 367-2012 Technical specifications for disinfection of medical institutions
WS 310.3-2009 Hospital disinfection and supply centers Part 3: cleaning, disinfection and sterilization effect monitoring standards