1. Medical protective masks Medical protective masks are suitable for the protection of medical personnel and related staff against airborne respiratory infectious diseases. They are a kind of tight self-priming filter medical protective equipment with high protection level, especially suitable for diagnosis and treatment activities. Wear it when in contact with patients with respiratory tract infections that are spread by air or by droplets at close range. It can filter particles in the air and block droplets, blood, body fluids, secretion droplets, etc. It is a one-time-use product. Medical protective masks can prevent most bacteria, viruses and other pathogens. WHO recommends medical personnel to use protective masks against particulate matter to prevent virus infection in the hospital air.
2. Medical surgical masks Medical surgical masks are suitable for basic protection of medical personnel or related personnel, as well as protection against the spread of blood, body fluids and splashes during invasive operations. The protection level is medium and has certain respiratory protection performance. It is mainly worn in a clean environment with a cleanliness level of less than 100,000, working in the operating room, nursing patients with immunocompromised function, and performing body cavity puncture and other operations. Medical surgical masks can block most bacteria and some viruses, prevent medical staff from being infected, and also prevent the direct discharge of microorganisms carried in the exhalation of medical staff, posing a threat to patients undergoing surgery. Medical surgical masks require a bacterial filtration efficiency of more than 95%. Disposable medical surgical masks should also be distributed to suspicious respiratory patients to prevent the threat of infection to other hospital personnel and reduce the risk of cross-infection, but the effect of avoiding infection is not as effective as medical protective masks.
3. Ordinary medical masks Ordinary medical masks are used to block the splashes exhaled from the mouth and nose, and can be used for disposable health care in ordinary medical environments, with a low level of protection. It is suitable for general health care activities, such as sanitation, liquid dispensing, cleaning of bed units, etc., or the blocking or protection of particles other than pathogenic microorganisms such as pollen.
