Resistance of primary air filters over 60Pa, or equal to 2 × design or operation of initial resistance 3-6 months, they should be replaced at any time if exceed this standard time
Resistance of medium air filters over 80Pa, or equal to 2 × the design or operation of initial resistance 6-12 month, they should be replaced at any time if exceed this standard time
Resistance of sub-HEPA filters over 100Pa, or equal to 2 × design or operation of initial resistance (resistivity Asian efficient when three times) more than 1 year, they should be replaced if exceed this standard time
Resistance of HEPA filters over 160Pa, or equal to 2 × the design or operation early resistance over 3 years,they should be replaced at any time if exceed this standard time

Should be noted following points when replace the air filters:

1 Strictly manage the people and materials get in and out operating

2 Do not use a laminar flow operating room pink gloves.

3 is prohibited in all kinds of cloth folded surgical dressing room or personal items such as books, newspapers and into the operating room.

4 emergency surgery in the Department of Surgery of the outermost implemented within the operating room, infection, surgery to close the dirt channel implemented within the operating room.

5 surgical equipment connected sets of continuous operation, the time interval to ensure adequate purification time.

6 all cleaning work, have to run the process in the purification system used a damp cloth.

7 into the operating room for a variety of instruments and equipment should be installed at the top, wipe clean.

8 immediately after the end of surgery cleared, clean, organize all kinds of items.

9 surgery to remove all dirt and classification bag sealed from dirt channel shipped out.

10 every day before and after surgery, each with a disinfectant wipe 1 shadowless, equipment cart, anesthesia table, operating table, cabinets and other equipment surface and ground.

11 through the isolation of staff shoes, with the completion of cleaning disinfection.

12 a week all the equipment and the ground thoroughly wipe disinfection, cleaning and maintenance

13 weekly coarse filter, the filter, return air cleaning device

14 every two weeks on the coarse filter, the filter, return air network with 500 mg / L chlorine disinfectant wet wipe disinfected once.

15 monthly cleansing operation of air sampling equipment for bacterial culture surface, temperature and humidity testing once. And the results for registration.

16 every six months will be at the beginning, in effect filter replacement 1. Annual replacement of high efficiency filter.

17 monthly operating room infection control team to do the air, hands, material sheet, disinfectants and other monitoring sampling and monitoring rectification work summary.

18 air cleanliness monitoring the use of "multi-point surveillance sampling" detection method. Static method-based, supplemented by dynamic method.

1. Should install the HEPA air filters in operating room immediately after confirmed they are qualified

2 Install HEPA filter frame should be smooth, clean, each filter mounting frame flatness deviation must not exceed 1 to 2 mm;

3 filter installation direction must be properly installed filters four weeks and interfaces should not leak tight;

4 HEPA filter with mechanical seal should be used airtight gasket seal, the thickness of 6-8 mm, and close to the border on the filter; installation litter should be uniform compression, the compression rate of 25 ~ 50%; Installation should be performed after scanning leak;

5 HEPA filter hydraulic seal, the slot rack installation level, and not have leakage phenomenon; tank free of dirt and moisture. Height of the sealing liquid tank the groove depth is preferably 2/3, the sealing liquid should be higher than the melting point of 50 ℃