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How To Use High Pressure Steam Sterilizer Equipment

Views: 2     Author: Site Editor     Publish Time: 2024-05-28      Origin: Site

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Although high-pressure steam has the advantages of fast speed, reliable effect, high temperature, and strong penetrating power, it can also lead to failure if used improperly. Some opinions on the precautions for using high-pressure steam sterilizers.

1. Preliminary treatment of disinfected items Any medical equipment, sheets, clothing, etc. that have come into contact with pathogenic microorganisms should be disinfected with chemical disinfectants first, and then cleaned according to routine. In particular, all kinds of items used in the infectious disease room must be strictly controlled and disinfected first, then cleaned and disinfected. During routine cleaning, first soak and scrub with detergent solution to remove oil, blood and other dirt on the items, and then rinse with running water. Instruments and other items such as shaft joints, tooth slots and gaps should be opened or disassembled as much as possible and thoroughly cleaned. Washed items should be dried and packaged according to clinical needs to avoid re-contamination. Containers and transportation tools for items before and after decontamination should be strictly separated and clearly marked to prevent cross-infection.

2. The packaging and containers of disinfected items must be suitable. The packaging should be double-layered with white cotton cloth. New wrapping cloth should be washed and de-starched before use. Items should be packed with strings so that they are not loose and spread out and should not be too tight. The volume of the bag should not exceed that of Huo Huo Gong Yin. When using containers, choose ones that can block the intrusion of external microorganisms and have good steam penetration. Such as special syringe boxes, storage tanks for dressings, etc. Because it is difficult for steam to enter civilian aluminum boxes, and the air in the box is not easy to be discharged, conventional methods often fail to achieve the desired effect. Test comparisons show that its contamination rate is much higher than that of medical aluminum boxes. Therefore, civilian aluminum boxes cannot be used to pack syringes or instruments.

3. Disinfection items should be placed reasonably. Too many disinfection items or improper placement can affect the effect. The items in the sterilizer should not be overcrowded or exceed the capacity of the pot. Try to pack similar items into one pot. If there are different types of items packed together, the temperature and time required to reach the items that are difficult to measure should be used as the criterion. When placing items, they should be staggered up, down, left, and right, leaving gaps so that steam can easily penetrate. Large sterilization bags should be placed upright on the upper floor, and small bags should be placed on the lower layer. The large enamel box and storage tank should also be placed upright on cloth and metal objects. At the same time, metal bags should be placed on the lower layer so that the two are heated basically the same and prevent Condensation from metal objects can wet the wrapping.

4. Drain the air When using a high-pressure steam sterilizer, the key is to drain the air out of the pot. If there is air in the pot, the pressure indicated by the air pressure needle is not the pressure generated by saturated steam. At the same pressure, the temperature of steam mixed with air is lower than that of saturated steam. See the table below for the relationship between pressure and temperature when the air is removed in the pot to different degrees. The temperature when the air is removed to different degrees is ℃. When all the air is removed, the temperature is ℃. When all the air is removed, the temperature is ℃. When the air is not removed, the temperature is ℃. Due to boiling, the spores and hepatitis virus cannot be killed in a short period of time, which affects the effect. Therefore, the exhaust must be thorough and the exhaust time should be about 10 minutes.

5. Reasonable calculation of time includes ① Penetration time starting from the time when the temperature in the pot reaches the temperature to the time when the hard-to-reach parts of the pot also reach this temperature ② Maintenance time is the time required to kill microorganisms, generally to kill thermophilic fat Expressed in terms of the time required for bacillus spores, it dies in minutes at the factory. ③Safety time is the additional time required to obtain the exact guarantee. It is generally half of the thermal death time, and its length depends on the disinfection items. For metal equipment that easily conducts heat, no safety time is required. During the time, pay attention to the pressure gauge and adjust the air intake volume to maintain the pressure until the time. During the process, if the pressure or temperature drops, the temperature and pressure should be raised again and the timing should be reset.

6. It is required that after the sterilized items are dried, check that the indicator meets the requirements before they can be taken out of the pot. When removing sterile items, strict aseptic operation is required. Before opening items, cover the lid first and close the ventilation hole of the storage tank. Items should be stored away from ground food. , no less than 10 feet away from the top, and no less than 10 feet away from the wall to reduce pollution from the ground, roof and walls. At the same time, they should be placed in categories and distributed in order. Items whose expiration date generally does not exceed seven days in hot and humid seasons and can be extended to days in cold and dry seasons should be stopped.

7. Prevent super-heated steam. For example, when the pressure is " , so it is detrimental. The way to prevent overheating is to not make the temperature of the interlayer higher than the temperature of the sterilization chamber when using an external steam extinguisher. The two should be similar and do not allow steam with too high pressure to enter the sterilization chamber before absorbing water. When over-drying, do not use high-pressure steam to heat to the required temperature and then reduce the pressure.

8. Pay attention to safety. Before each operation, check whether the device is in good working condition, especially whether the safety valve is in good condition. Don’t decompress too hard or too fast after disinfection. You should wait until the pressure gauge returns to its original position before opening the pot door. If there is bottled solution in the sterilizer and the pot is opened suddenly, the glass may burst when suddenly exposed to cold air. It must be noted that if the pot door is suddenly opened too wide and a large amount of cold air enters, the steam around the wrapping cloth may easily condense into water. The spots will block the holes of the wrapping cloth, hinder the steam in the wrapping cloth to escape, and make the items moist.


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