The sterilization methods of instruments: ethylene oxide (EO) sterilization, dry heat sterilization, moist heat (steam) sterilization, irradiation sterilization, filtration sterilization method.
1, ethylene oxide (EO) sterilization method
Ethylene oxide sterilization is a suitable for non-high-temperature resistant medical equipment gas sterilization. For can not be used disinfectant immersion, dry heat, pressure, steam products also have excellent sterilization effect. In addition, ethylene oxide does not corrode plastics, metals and rubber, polymers and other products, and does not make items yellow and brittle.
2, dry heat sterilization method
Dry heat sterilization is to put the product in the dry heat sterilization cabinet, the use of dry heat air oxidation, kill microorganisms or eliminate pyrogenic substances. Dry heat sterilization in a certain time frame using a higher temperature (usually 160-250 degrees Celsius) for sterilization treatment. It is generally used for items that are resistant to high temperatures but should not be sterilized by moist heat, such as glassware and metal surgical instruments.
3, moist heat (steam) sterilization method
Moisture heat sterilization is placed in the product in the autoclave cabinet (pot), the use of high-pressure saturated steam at a small temperature of 121 degrees Celsius under the pressure of heat and moisture is rapidly transferred to the sterilized product, sterilization time of at least 15 minutes. Applicable to clean clothes, glass appliances, buffers, culture media, infectious dirt and other products that do not change or damage when exposed to high temperature and high humidity.
4, irradiation sterilization method
Irradiation sterilization is the use of rays (including X-rays, γ-rays and accelerated electron beams, etc.) irradiation to kill harmful bacteria and insects of a technology. Radiation sterilization and other sterilization methods have many advantages compared. It can be carried out at room temperature, basically does not change the temperature of the sample, suitable for the sterilization of items that can not be processed at high temperatures; it is highly penetrating, uniform and rapid sterilization.
5, filtration sterilization method
Filtration sterilization method to remove microorganisms in the medium of physical methods. Often the air or liquid microorganisms and impurities with different materials made of membrane filter to get sterile, impurity-free air or liquid. Suitable for heat-resistant low viscosity drug solution, especially some biochemical preparations.
Reference: Baidu Encyclopedia - Sterilization