Medical mask with variable filtering area

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of medical protection, in particular to a medical mask with a variable filter area, which is mainly used by medical personnel to isolate germs and viruses in infectious wards. Background technique [0002] Medical masks generally refer to wearing on the mouth and nose to filter the air entering the mouth and nose, so as to prevent dust, droplets, bacteria and viruses from entering the wearer's mouth and nose. When systemic diseases are prevalent, wearing a mask has a very good effect of blocking germs. [0003] At present, medical masks are roughly divided into ordinary medical masks, surgical masks, and N95 masks according to their waterproof, dustproof, antibacterial, antivirus, and air permeability. When working, medical staff will choose corresponding masks according to their own working environment. All there is the problem that is not easy to use for a long time and the problem that the peripheral sea...

AI Technical Summary

Problems solved by technology

In particular, the masks worn by medical staff have a small contact area with the human body, are hard in texture, and are tightly stretched, which increases local tissue pressure, and the indentation is very prominent, increasing the risk of pressure injury

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