Standard Operating Procedures for Stainless Steel Portable Pressure Steam Sterilizer
1. Preparation:
1.1 Stacking: Wrap the items to be sterilized properly, Sequentially leave a gap between each other and place them on the sieve plate in the sterilization bucket, which is conducive to the penetration of steam and improves the sterilization effect.
1.2 Add water: Add three liters of distilled water or ionized water into the main body. When used continuously, the amount of water must be added after each sterilization to avoid major accidents caused by dry heat.
1.3 Sealing: Put the sterilization bucket into the main body, then insert the hose on the cover into the sterilization bucket, align the bolt grooves of the cover and the main body in the side protruding tube, and sequentially and evenly align the Tighten the nut to make the cover and the body tightly fit.
1.4 Heating: Place the instrument on the power supply. At the beginning, the air release valve must be pushed to the vertical (open) position to allow the air in the instrument to escape. Wait until there is a rapid steam jet in the instrument. When taking it out, the pick should be immediately moved to the horizontal (closed) position. The pressure generated as the heat continues to rise can be reflected on the watch.
1.5 Sterilization: When the pressure inside the device reaches the required range, the heat should be appropriately lowered to maintain a constant pressure, and at the same time, the sterilization time should be controlled according to different items and packaging.
1.6 Drying: For medical devices, dressings, utensils, etc. that need to be dried quickly, the release valve can be opened immediately after sterilization is completed to quickly discharge the pressure steam in the device. See the pressure gauge instructions. After the needle returns to the zero position, wait for 1-2 minutes, then open the cover and continue heating the device for 10-15 minutes.
1.7 When sterilizing bottled solutions, do not immediately discharge the steam in the device. Otherwise, the solution in the bottle may boil violently due to pressure fusion, overflow, or even the bottle explodes. Therefore, you should first unplug the heat source, allow the nuclear weapon to cool naturally until the pressure gauge pointer returns to zero, then wait a few minutes to open the vent valve and open the cover.
2. Notes:
2.1 During the entire sterilization process, there must be sufficient water in the device. Since water continues to evaporate during heating, water must be added again every time it is disinfected, and "dry heat" is never allowed. Otherwise, it is easy to burn out the device or even cause an explosion, causing serious accidents. For safety reasons, operators are not allowed to leave the site.
2.2 Sterilization items:
2.2.1 Due to the different types, volumes, densities and thermal conductivity of sterilization items, the sterilization time and pressure required are also different. If the object has a high volume density and poor thermal conductivity, the sterilization time can be appropriately extended. Generally speaking, the temperature of the innermost layer must reach 121°C and last for a period of time to truly achieve the sterilization effect. Comparison table of time, temperature and pressure required for sterilizer:
Poison sterilization holding time min Steam pressure MPa Saturated steam relative humidity ℃
Rubber 15 0.105-0.11 121
Dressings 30-40 0.105-0.14 121-126
Utensils 15 points 0.105-0.14 121-126
Instruments 10 0.105-0.14 121-126
Bottled solutions 20-40 0.105-0.14 121-126
2.2.2 Different types of items should not be put together for sterilization.
2.2.3 The volume of sterilized items should not be too large, nor should they be placed too tightly or too tightly. So as not to affect steam penetration.
2.2.4 Items that are not heat-resistant and items that are corrosive to metals should not be put into sterilization.
2.2.5 For uncapped bottled solutions, before sterilization, use a heat-resistant rubber stopper (cork) to plug the bottle mouth tightly, then use several layers of gauze to press the bottle stopper, and seal it on the bottle neck. The gauze is attached to the outside and fixed with rope.
2.2.6 When starting sterilization, the air in the device must be completely eliminated. Otherwise, the reading on the pressure gauge will be the sum of the pressures of air and water vapor.
The result is that although the pressure reaches the specified value, the temperature does not meet the requirements.
2.2.7 After sterilization is terminated, fast deflation, slow deflation and natural cooling can be carried out according to the different properties and requirements of the sterilized items.
2.2.8 If the sterilized items will not be damaged due to a sudden drop in pressure and temperature, and the items are required to be dry after sterilization, deflate quickly and wait until the pressure returns to the "0" position. Wait one minute, then open the lid and continue heating for 5-10 minutes, then take out the items to achieve drying purposes.
2.2.9 The sterilized items are glassware. If the air is deflated too quickly, it will cause the glassware to vibrate violently. Rapid changes in temperature may cause the glass to burst, so the air should be deflated slowly. After the pressure gauge slowly drops to the "0" position, open the lid a little and let the temperature inside the device gradually drop. After 15 minutes, you can fully open the lid and take out the items.
2.2.10 If the sterilized items are solutions in press-cap bottles, such as physiological saline, etc. If the pressure and temperature drop suddenly, the solution will boil violently, and the cork may even be removed, causing the glass bottle to burst. You should first turn off the power and let it cool naturally for 20-30 minutes so that the temperature of the solution in the bottle drops below 100°C, then deflate it. When the pressure gauge returns to the "0" position, open the lid a little. After 10-15 minutes, the lid of the device can be fully opened and the sterilized items can be taken out.
2.2.11 It should be particularly emphasized that it is absolutely not allowed to open the lid of the device before the air is deflated and the pressure inside the device has not dropped to the "0" position. Otherwise, the pressure inside the device will be very high and the sterilized items will be damaged. It will rush out together with the high-pressure airflow, which may harm the human body and cause serious accidents.
I don’t know if it’s the same as yours or not
Hope it helps