The resistance of the coarse and low efficiency filter has exceeded the rated initial resistance of 60Pa, or is equal to 2 times the design or operating initial resistance for 3-6 months. If it exceeds the standard, it can be replaced at any time
The resistance of the medium efficiency filter has exceeded the rated initial resistance of 80Pa, or is equal to 2 times the design or operating initial resistance for 6-12 months. If it exceeds the standard, it can be replaced at any time
The resistance of the sub high efficiency filter has exceeded the rated initial resistance by 100Pa, or is equal to 2 times the design or operating initial resistance (3 times for low resistance sub high efficiency) for more than 1 year. If it exceeds the standard, it can be replaced at any time
The resistance of the high-efficiency filter has exceeded the rated initial resistance of 160Pa, or is equal to 2 times the design or operating initial resistance for more than 3 years. If it exceeds the standard, it can be replaced at any time
When replacing the air filter, attention should be paid to:
1. Manage the entry and exit of personnel and various items in the operating room.
2. Powder gloves are not allowed in laminar flow operating rooms.
3. It is strictly prohibited to fold various cloth dressings or bring personal belongings, books, newspapers, etc. into the operating room.
4. Emergency surgery should be performed in the outermost operating room of the operating department, while infection surgery should be performed in the operating room near the sewage channel.
5. The surgical equipment should run continuously, with sufficient self purification time between intervals.
(2. Infection Prevention Management)
6. All cleaning work must be wiped with a damp cloth during the operation of the purification system.
7. All instruments and equipment entering the operating room should be installed and wiped clean before entering.
8. After the surgery, the area should be immediately cleaned, wiped, and all kinds of items should be organized.
9. After the surgery, remove all kinds of dirt, seal them in bags, and transport them out through the dirt channel.
10. Before and after surgery, wipe the surfaces and floors of various equipment such as shadowless lamps, equipment carts, anesthesia tables, operating beds, and cabinets with disinfectant once a day.
11. Clean and disinfect the isolation shoes worn by the staff after use.
12. Thoroughly wipe, disinfect, clean, and maintain all equipment and floors once a week.
13. Clean the coarse filter, medium efficiency filter, and return air outlet device once a week.
14. Disinfect the coarse filter, medium efficiency filter, and return air network with a 500 mg/L chlorine containing disinfectant wet wipe every two weeks.
15. Sample the air and equipment surfaces of the clean operating room for bacterial culture and test the temperature and humidity once a month. And register the results for record keeping.
Replace the initial and intermediate filters every 6 months. Replace the high-efficiency filter screen annually.
[3 Monitoring Management]
17. The infection control team in the operating room conducts monthly monitoring and sampling of air, hands, surfaces, disinfectants, etc., and summarizes the rectification of monitoring work.
18. The air cleanliness monitoring adopts the "multi-point control sampling" detection method. Static method is the main approach, with dynamic method as a supplement.
The installation of high-efficiency air filters in operating rooms should comply with the following regulations:
1. High efficiency air filter for operating room (reference available) http://www.klcfilter.com/ ）After passing the appearance inspection, installation should be carried out immediately;
The frame for installing high-efficiency filters should be flat and clean, and the flatness deviation of the installation frame for each filter should not exceed 1-2mm;
The installation direction of the filter must be correct, and after installation, the surroundings and interfaces of the filter should be tight and leak free;
When using mechanical seals for high-efficiency filters, an airtight gasket with a thickness of 6-8 mm should be used for sealing, and it should be tightly attached to the filter frame; The compression of the cushion material after installation should be uniform, with a compression rate of 25-50%; Scanning and leak detection should be carried out after installation;
When the high-efficiency filter adopts hydraulic sealing, the groove frame should be installed horizontally and there should be no leakage; There is no dirt or moisture in the tank. The height of the sealing liquid in the groove should be 2/3 of the groove depth, and the melting point of the sealing liquid should be higher than 50 ℃
