Hospital clean operating rooms have high requirements for air cleanliness, temperature and humidity, air flow organization and pressure control. A reasonable air purification system can reduce the risk of particle and microbial contamination in the air, provide stable and clean air conditions for the surgical environment, and improve the environmental comfort of medical staff and patients.
1. Why does a clean operating room need air purification?
During the operation, particulate matter may be generated by personnel activities, equipment operation and external air. Particles in the air can act as vectors for the spread of microorganisms, so the risk of contamination needs to be reduced through filtration and proper airflow organization.
The air purification system should not only focus on filtration efficiency, but also comprehensively consider ventilation, pressure, temperature and humidity, air flow direction, and equipment operation stability.
2. Clean operating room air purification system composition
Typical systems can use:
Fresh air → Primary-efficiency filtration → Medium-efficiency filtration → Air-conditioning treatment → High-efficiency filtration → Clean air supply → Operating room → Return air/exhaust air
The primary-efficiency filter mainly intercepts larger dust, fiber and other particles and reduces the subsequent filter load; the medium-efficiency filter further filters particles in the air; the terminal HEPA high-efficiency filter is used to reduce the concentration of fine particles entering the operating room.
For operating rooms with different cleanliness levels, the filtration level, air supply method and air treatment parameters should be determined according to specific design requirements.
3. The role of HEPA high-efficiency filters
HEPA filters are usually installed in the end air supply equipment of clean operating rooms and are an important part of the air purification system.
The terminal high-efficiency filter can further filter the air-conditioned air to reduce the entry of fine particles into the surgical area. When installing the filter, special attention should be paid to the sealing performance to prevent air from bypassing the filter frame and the installation frame, affecting the actual purification effect.
Therefore, when selecting a filter, you should not only look at the rated filtration efficiency, but also pay attention to the filter material, structural strength, initial resistance, final resistance, size and sealing method.
IV. Air flow organization design of clean operating room
The air purification effect is closely related to the air flow organization. Reasonable air supply and return methods can reduce the amount of contaminated air staying in the surgical area.
For operating rooms with high cleanliness requirements, clean air supply ceilings, laminar air supply devices or other suitable terminal air supply forms can be used according to design requirements so that clean air can stably cover the main operating areas.
The location of the return air vents also needs to be reasonably designed to avoid air flow short circuits, local dead corners or contaminated air re-entering key areas.
5. Operating room pressure, temperature and humidity control
A reasonable pressure relationship should be established between different areas according to the hospital’s clean environment design requirements to reduce external contaminated air from entering the clean surgical area.
At the same time, the air conditioning system should provide stable control of temperature and humidity. Too high or too low temperature will affect the comfort of medical staff, and unreasonable humidity control may also affect equipment and indoor environment.
Therefore, the clean operating room HVAC system should be equipped with reliable temperature and humidity sensors and automatic control systems, and be adjusted according to actual operating conditions.
6. What should you pay attention to when selecting an air filter?
It is recommended to consider the following when selecting filters for clean operating rooms in hospitals:
Filtration efficiency: determined according to operating room cleanliness level and design requirements;
Rated air volume: meets terminal air supply volume requirements;
Initial resistance: reduces system operation energy consumption;
Final Resistance: serves as an important reference for filter maintenance and replacement;
Sealing performance: reduces bypass leakage after filter installation;
Filter material performance: meets long-term stable operation requirements;
Dimensions and specifications: matches high-efficiency air supply outlets, clean air supply ceilings or FFU.
During the operation of the filter, the pressure difference and cleanliness should also be regularly detected, and timely maintenance or replacement should be carried out according to the actual operating status.
7. Jiangsu Yueboyang clean operating room product supporting capabilities
Jiangsu Yueboyang Purification Equipment Co., Ltd. focuses on the field of clean air and purification equipment, and can provide primary-efficiency, medium-efficiency, high-efficiency and ultra-high-efficiency filters, FFU fan filter units, high-efficiency air supply outlets and other products for hospital clean operating rooms.
For hospital clean operating rooms, clean wards and other medical clean areas, the company can select and customize products according to the design air volume, cleanliness level, installation size and on-site use requirements, and provide supporting support for filtration and terminal air supply products for clean air conditioning systems.
8. Summary
Hospital clean operating room air purification system is a comprehensive project that requires the combination of multi-stage air filtration, clean air supply, air flow organization, pressure control, temperature and humidity adjustment and operation and maintenance.
By properly configuring primary-efficiency, medium-efficiency and HEPA high-efficiency filters, and cooperating with reliable clean air supply equipment and automatic control systems, a stable clean air environment can be established to provide support for environmental control and normal operation of hospital operating rooms.
