High-pressure steam sterilization with sterilization speed, reliable, high temperature, strong penetration, etc., improper use, can lead to sterilization failure. In the sterilization should pay attention to several points:
First, the initial treatment of disinfection items. Where contact with pathogenic microorganisms in medical equipment, sheets, clothing, etc. should be disinfected with chemical disinfectant, and then follow the routine cleaning. In particular, after the use of various types of infectious diseases items, to strictly control, the first strict sterilization, and then cleaned and disinfected. Conventional cleaning, the first detergent solution soak scrub, remove the items on the oil, blood dirt and other dirt, and then rinse with running water. Alarms and other items, such as shafts, gullets and crevices, should be opened or removed as far as possible and thoroughly washed. After washing the items should be dry, according to the clinical needs of classification and packaging, to avoid re-pollution. Before and after the removal of contaminants, the contents of containers and conveyance tools should be strictly distinguished, and there are clear signs to prevent cross-infection.
Second, the disinfection of packaging and containers to be appropriate. Packaging with double-layer cloth white cotton, the new package cloth should be washed to pulp before use. Package wrapped with wire, not loose to spread appropriate, should not be too tight. Use containers to dress, the choice can not only block the invasion of external microorganisms, but also has good steam penetration. Such as a special syringe sterilization box, dressing storage tank and so on. Civil aluminum box is difficult to enter due to steam, and the box of air and difficult to discharge, according to conventional sterilization can not often achieve sterilization. Contrast test showed that the pollution rate is much higher than medical aluminum. So you can not use civilian aluminum box syringe or equipment sterilization.
Third, the disinfection of goods placed should be reasonable. Excessive disinfection or improper placement can affect the sterilization effect. Disinfection pot items can not be too crowded, not more than pot capacity. As far as possible the same kind of equipment packed pot sterilization. If different types of items put together, should be difficult to achieve the required temperature sterilization items and time shall prevail. Items loaded, the upper and lower left and right should be staggered, leaving the gap, so that steam is easy to penetrate. Large disinfection package should stand on the upper layer, small bags put the lower large enamel boxes and storage tanks should also be placed on the release of cloth and metal items at the same time sterilization, should be placed on the lower metal objects package, so that both heat basically the same, And prevent the condensation of metal products produced in the sterilization of wet cloth.
Fourth, row of air. The use of high-pressure steam sterilization pot, the most critical is the pot of air exhausted. If there is air in the pot, the pressure at which the air pressure needle is directed is not the pressure generated by the saturated steam. At the same pressure, the temperature of the vapor mixed with air is lower than that of saturated steam.
Fifth, a reasonable calculation of sterilization time. Sterilization time includes: ① penetration time, from the pot to reach the sterilization temperature calculation time, the pot is the most difficult to reach the site also reached the temperature of time; ② maintenance time, that is to kill microbial time, The time required to kill Bacillus stearothermophilus spores; ③ safe time, in order to get the exact guarantee of sterilization to increase the time required. Usually half of the time of thermal death, depending on the length of the disinfection of items. The thermal conductivity of the metal equipment, sterilization, do not need a safe time. In the sterilization time, pay attention to the pressure gauge, and time to adjust the intake volume, in order to maintain the pressure, to maintain sterilization time. In the sterilization process, if the pressure, temperature, should be re-warming step-up, re-time.
After sterilization. Require sterilized items to dry, check the indicator to sterilization requirements can pan. Take aseptic items, to be strictly aseptic, open lid items cover first, good storage tank closed vent. At the same time should be classified placement, order issued access. More than valid, hot and humid season is generally not more than seven days.
7, to prevent superheated steam. Superheated steam temperature is high, but the same as the air, encountered disinfection items can not be condensed into water, can not release the latent heat, so sterilization. The way to prevent superheating is to use exogenous steam destroy device, do not make the temperature of the dissection chamber is higher than the temperature of the disinfection chamber, the two should be close to not so high pressure steam into the sterilization chamber; sterilization do not use high pressure steam Heated to the required temperature, and then lower the pressure.
Eight, pay attention to safety. Before each sterilization should check whether the sterilizer is in good working condition, especially the safety valve is good. Decompression after decompression is not too fast too fast. Should wait until the pressure gauge returns "0", can open the pot door. If the pot is a bottle of disinfectant solution, and suddenly Kai Guo, the glass suddenly encountered cold air prone to burst, we must pay attention to if the pot door open too much, a large number of cold air into, easy to wrap around the steam condensate water points While the clogging cloth eyelet, hinder the steam from the bag cloth, leaving the items wet.
9, can not use high-pressure steam sterilizer disinfection of any destructive materials and alkali metal content of the material. Disinfecting these items will result in an explosion or corrosion of the inner liner and internal piping, as well as damage to the gasket.
Dangerous Goods List:
1. Explosives Ethylene glycol dinitrate (nitroglycol), nitroglycerin, nitrocellulose (nitrocellulose filter), and all nitric acid-containing esters. Trinitrobenzene, yellow explosives, picric acid and all flammable and explosive nitro, peracetic acid, methyl, ethyl, methanol, hydrogen peroxide, peroxide, benzoyl, benzoyl and organic Oxide.
2. Flammable substances lithium metal, potassium, sodium, yellow phosphorus, phosphorus, sulfide, red phosphorus. Gelatin, calcium carbide (calcium carbide), calcium oxide (lime), magnesium powder, sodium hydrosulfite (sodium hydrosulfite).
3. Oxidizing agents Potassium chloride, sodium chloride, ammonium chloride and other chlorides. (Powder) potassium perchlorate, sodium perchlorate, ammonium perchlorate and other high chlorides. Potassium nitrate, sodium nitrate, ammonium nitrate and other nitrates. Potassium peroxide, sodium peroxide, barium peroxide and other inorganic peroxides. Sodium chlorite and other hypochlorite, calcium hypochlorite and other hypochlorous acid.
4. Flammable substances II, ether, gasoline, acetaldehyde (acetaldehyde), propylene oxide, propylene oxide, carbon disulfide and other ignition point between -30 ℃ ~ 0 ℃ substances. Methanol, ethanol, xylene, benzyl, benzyl acetate, and other substances (alcohols) having a flash point between 0 ° C and 30 ° C. Gasoline, isopentyl alcohol, acetic acid (acetic acid), and other similar substances having a burning point between 30 ° C and 65 ° C.
5. Combustible gases (hydrogen, acetylene, ethylidene, methane) ethane, propane, butane and other gases at 15 ° C and one atmosphere.
6. When the liquid containing salt leaks or overflows, it must be wiped cleanly, and the sealing ring along the lid should be thoroughly dried, otherwise it will corrode the container and pipe.
7. Before opening the cover, make sure that the pressure is below "0 / npa".
8. Do not use the instrument near explosive gases.
