Can the ultraviolet air sterilizer meet the disinfection requirements of the operating room?

With the continuous development of science and technology, the air disinfection methods in hospital operating rooms are constantly improving, but ultraviolet disinfection is still one of the commonly used economic, effective and convenient air disinfection methods in domestic hospitals. The air disinfection of ordinary operating rooms is generally completed by circulating air ultraviolet air disinfector. As the excimer laser operating room is a high-precision instrument, and is not corrosion resistant, the body is huge and difficult to move, so chemical disinfection method cannot be used for air disinfection. Most excimer laser operating rooms are disinfected by ultraviolet radiation. Then whether the single circulating air ultraviolet air disinfector can meet the disinfection requirements of the operating room (bacterial count<200 cfu/m2). Through experimental monitoring, we have a clear conclusion.

The quality of air disinfection in the operating room directly affects the medical effect and the rehabilitation of patients. Therefore, strengthening the air disinfection in the operating room is the key to ensure the quality of medical care in the operating room and prevent postoperative infection. The conventional air disinfection in the operating room is ultraviolet radiation disinfection. The method of circulating air ultraviolet air disinfector was used to observe the number of bacteria in the air at different times after 2 hours of ultraviolet radiation. The results showed that the effective time of the ultraviolet air disinfector in the operating room with good airtight conditions could not exceed 12h. If it was more than 12h, it should be used after air disinfection.

In addition, the intensity of ultraviolet radiation and the disinfection effect are affected by many factors, so the room should be kept clean and dry during irradiation; The lamp tube is free of dust. If the room temperature is less than 20 ℃ and the relative humidity is more than 60%, it is necessary to extend the irradiation time appropriately to ensure the disinfection effect. In order to ensure the best disinfection effect of the ultraviolet air disinfector, each link that affects the ultraviolet disinfection shall not be overlooked. The doors and windows must be closed when disinfecting. The model of the ultraviolet air disinfector must meet the size of the operating room. The surface of the ultraviolet lamp tube should be wiped with alcohol cotton ball regularly to prevent dust from blocking the ultraviolet sterilization effect; The output intensity of ultraviolet ray shall be monitored regularly, and the cumulative exposure time of each lamp shall not exceed 5000h, etc.