High-pressure steam sterilization has the advantages of sterilization speed, effectiveness and reliability, high temperature, strong penetration, etc. Improper use can lead to the failure of sterilization.
In the sterilization should pay attention to a few points:
A, the initial treatment of disinfection items. Any contact with pathogenic microorganisms of medical equipment, sheets, clothing, etc. should be disinfected with chemical disinfectants, and then cleaned in accordance with the routine. Especially after the use of infectious wards of all kinds of items, we must strictly control, first tightly disinfected, and then cleaned and disinfected. When cleaning routinely, first soak and scrub with detergent solution to remove oil, blood and other dirt on the articles, and then rinse with running water. Instruments and other items with shaft joints, grooves and crevices should be opened or disassembled as much as possible for effective scrubbing. After washing, items should be dried and packaged according to clinical needs to avoid recontamination. Before and after the removal of contaminated items of containers and transportation tools should be strictly differentiated, and have a clear sign to prevent cross-infection.
Second, the packaging and containers of disinfected items should be appropriate. Packaging using double-wrapped white cotton, new cloth should be washed to remove pulp before use. Articles packaged with a string tie, in order not to loose loose appropriate, should not be too tight. When using containers, use containers that can block the invasion of external microorganisms, but also have good steam penetration. Such as special syringe sterilization box, storage tank for dressings. Civilian aluminum box due to steam is difficult to enter, and the air inside the box is not easy to discharge, according to conventional sterilization often can not achieve sterilization results. Comparison of tests show that its contamination rate is much higher than the medical aluminum box. So can not use civilian aluminum box syringe or instrument sterilization.
Three, sterilization items should be reasonable. Disinfection items too much or improperly placed can affect the effectiveness of sterilization. Sterilization of items in the pot can not be too crowded, not more than the amount of pot content. As far as possible, the same type of goods will be loaded into a pot of sterilization. If there are different types of items put together, it should be difficult to achieve the amount of sterilization items required by the temperature and time shall prevail. When loading and placing items, the top and bottom should be staggered, leaving gaps, so that the steam can easily penetrate. Large sterilization package should be placed on the upper level, small package on the lower level of the large enamel box and storage tank should also be placed on the cloth and metal items sterilized at the same time, should be placed on the lower level of metal items package, so that the two heat is basically the same, and prevent the metal items sterilized in the condensate produced wet cloth.
Four, exhaust air. The use of high-pressure steam sterilization pot, the key is to exhaust the pot of air. If there is air in the pot, the pressure pointed out by the needle is not the pressure of saturated steam. For the same pressure, the temperature of steam 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 start calculating the time to the pot is more difficult to reach the parts of the time to reach this temperature; ② maintenance time, that is, the time required to kill micro-organisms, generally to kill thermophilic fat bacillus buds the time required to indicate; ③ safety time, in order to make sure that the sterilization of the time required to ensure that the exact increase. Generally half of the heat death time, the length of which depends on the sterilization items. Sterilization of heat-conducting metal equipment, do not need a safety time. During the sterilization time, pay attention to the pressure gauge, and time to adjust the amount of air intake, in order to maintain the pressure, maintained until the sterilization time. In the sterilization process, if the pressure and temperature drop, should be re-temperature and pressure, re-timing.
Sixth, after sterilization. Requirements for sterilization items dry, check the indicator to meet the sterilization requirements can be out of the pot. Take sterile items, to be strictly aseptic operation, open the lid of the first item will be covered, storage tanks close the ventilation holes. At the same time, they should be placed in categories and issued in order for use. More than the expiration date, the hot and humid season is generally not more than seven days.
Seven, to prevent superheated steam. Superheated steam temperature is high, but like air, when encountered with disinfection items can not be condensed into water, can not release latent heat, so it is not conducive to sterilization. Prevent superheat is the use of external steam sterilizer, do not make the temperature of the sandwich higher than the temperature of the disinfection room, the two should be similar to not make the pressure too high steam into the disinfection room; sterilization, do not use high pressure steam heated to the required temperature, and then reduce 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 sterilization should not be too fierce and too fast. Should wait for the pressure gauge to return to the "0" position, before you can open the door. If the disinfection pot is a bottled solution, and suddenly open the pot, then the glass suddenly encountered cold air prone to bursting, it must be noted that if you suddenly open the door of the pot is too large, a large amount of cold air into the easy to make the cloth around the steam condensed into a water point and blocked the cloth eyelets, impede the discharge of steam in the cloth, so that the items wet.
Nine, you can not use autoclave sterilization of any destructive materials and alkali metal-containing substances. Sterilizing these items will cause an explosion or corrosion of the liner and internal piping, as well as damage to the gaskets.
List of Hazardous Substances: 1. Explosive Substances Ethylene Glycol Dinitrate (Nitroglycerin), Nitroglycerin, Nitrocellulose (Nitrocellulose Filter), and all Nitrate-containing Esters. Trinitrobenzene, yellow explosives, picric acid and all flammable and explosive nitro,peroxyacetic acid, methane-based, ethyl, methanol, hydrogen peroxide, peroxide, benzoyl, benzoyl and organic peroxides.2. Flammable substances lithium metal, potassium, sodium, yellow phosphorus, phosphorus, sulfide, red phosphorus. Gelatin, calcium carbide (calcium carbide), calcium oxide (lime), magnesium powder, sodium dithionite (insurance powder). 3. Oxidizers potassium chloride, sodium chloride, ammonium chloride and other chlorides. 4. (powder) Potassium perchlorate, sodium perchlorate, ammonium perchlorate and other perchlorides. Potassium nitrate, sodium nitrate, ammonium nitrate and other nitrates. Potassium peroxide, sodium peroxide, barium peroxide and other inorganic peroxides. Sodium chlorite and other sub-chlorides, calcium hypochlorite and other hypochlorites.4. Flammable substances II, ether, gasoline, acetaldehyde (acetaldehyde), oxidized propylene, propylene oxide, carbon disulfide and other substances with ignition points between -30 ° C ~ 0 ° C. Methanol, ethanol, xylene, benzyl, benzyl acetate, and other substances with a flash point between 0°C and 30°C (alcohols). Lamp oil, kerosene, gasoline, isoamyl alcohol, acetic acid (acetic acid), and other similar substances with a flash point between 30 ℃ and 65 ℃. 5. Flammable gases (hydrogen, acetylene, ethylene, ethylene, methane) ethane, propane, butane, and other gases at 15 ℃ and one atmospheric pressure. 6. When liquids containing salts are leaking or spilling, they must be wiped up in time, and seals along the lids should be wiped dry efficiently or they will Corrosion of containers and piping. 7. Before opening the lid, make sure the pressure is below "0/npa". 8. Do not use the instrument near explosive gases. 9. Classification of Autoclave Sterilizers cdtouching /Updated on 2012-06-12 Hits: 245.
Suzhou Haisiyuan
Automatic Autoclave Sterilizers