Surgical masks are masks worn by medical staff during s […]
Surgical masks are masks worn by medical staff during surgery and patient care. The intention is to prevent bacteria from escaping into the air from the wearer's mouth and nose. They are not designed to protect the user from inhaling bacteria or viruses in the air, and cannot completely prevent the wearer from floating bacteria or viruses. Their protective effect is also better than self-absorption such as N95 masks with special materials, shapes or airtight effects. Filter respirators are weaker.
Surgical masks are surgical masks.
Masks are generally divided into paper, gauze, activated carbon and surgical masks according to different materials. As far as the anti-droplet is concerned, there are different classifications of masks according to different filtration efficiency. Recently, the well-known N95 is one type. There are also n99, N100, and R series (anti-oil mist) or P series (anti-dust and oil mist). In terms of anti-droplet, these types have all levels. Comparable to or even better than N95. EU mask products are divided into FFP1, FFP2, FFP3; Australian mask products are divided into P1, P2, P3; Japanese mask products are classified into DS1, DS2, DS3, etc. The higher the last number of these classifications, the higher the representative level. The wearing area of the mask is different, and the sealing effect is also different. There are half area (such as medical mask), full area (such as biochemical gas mask) and hood. There is a big difference in the effect of mask wearing. The better the mask filter material and the larger the covering area, the better the protective effect. People wear masks when they go out or go to public places with concentrated crowds. Although it cannot prevent atypical pneumonia 100%, it can greatly reduce the chance of infection.
When wearing a mask daily, you should pay attention to the following: clean your hands before and after wearing the mask; wear the mask according to the packaging instructions, fasten the tether of the mask tightly, make the mask close to the face, and strictly distinguish the inside and outside; if there is a color, you should use it. The colored side faces outwards. Normal people’s masks should be changed and cleaned every day. After cleaning, they should be boiled in boiling water and then hung in the sun. For those who are in frequent contact with SARS patients or suspected patients, such as medical staff, the masks need to be replaced every 4 hours and must be disinfected; when the masks are damaged, they should be replaced immediately; the discarded masks should be sealed and put in with a lid Trash can.
In addition, the more layers of masks, the better the protective effect. Generally speaking, 12 to 14 layers are appropriate. If the mask is too thick, it will not be close to the face, and the air permeability will be poor. Air will enter from the edge of the mask, which will reduce the protective effect.
When buying masks, you should pay attention: First, touch them with your hands. The regular "multi-layer" (more than 12 layers) masks feel soft and have a uniform thickness. Some of the inferior masks are made of hard plastic, some are rotten gauze, and some are soft facial tissues. The hand feel is obviously different; second, it is best to choose small-package products to avoid secondary pollution. When purchasing, you should also pay attention to the name of the factory, address and phone number; third, go to regular shopping malls, supermarkets and pharmacies to buy masks, generally 16 Layer masks are around 3.5 yuan, and some small commodity markets are "cheaps" that cost 1 to 2 yuan and should be purchased with caution.