The invention discloses a medical
mask with a variable filtering area. The medical
mask is mainly used when
medical staff isolate germs in an infectious ward. The
mask is simple in structure and convenient to use, the front half portion of the protective layer on the mask is made into a corrugated
pipe shape, the front end of the protective layer is sealed, when the mask is used, the corrugated
pipe portion at the front end of the protective layer can be pulled open at any time in an
isolation ward according to needs, the filtering area of the mask is increased, and therefore the mask can be replaced; the user does not feel suffocated, moist and peculiar smell after wearing the mask for several hours continuously; on the other hand, the edge part, making contact with the
human body, of themask is made of foam materials and can be fully matched with the face of the
human body, and leakage is not likely to happen. The mask has the beneficial effects that the mask has a good
local pressure reduction effect, can be used for a long time at a time, can be used for solving the problem of mask replacement under the condition that a patient does not go out of an
isolation ward, and is notprone to generating pressure injuries such as indentation,
skin redness, pain, friction and dampness at the human face after being used for a long time.