Surgical masks are disposable masks
Surgical masks are supposed to be disposable.
Medical surgical masks are usually processed from components such as masks, shaping parts, harnesses, etc. They are generally manufactured from nonwoven materials and play an isolating role through filtration. Used to wear in the operating room medical personnel in the mouth and nose area, in order to prevent dander, respiratory microorganisms spread to the open surgical wounds, and to prevent the spread of surgical patients' bodily fluids to the medical staff, play a two-way biological protection
Mainly used in medical clinics, laboratories, operating rooms and other high demand for medical environments, the safety coefficient is relatively high, for bacteria, viruses, resistance is strong. Medical surgical masks can also be used to prevent the spread of influenza and respiratory diseases.
Standards for disposable surgical masks
Filtration efficiency: under the condition of air flow L/min, the filtration efficiency of aerodynamic median diameter μm sodium chloride aerosol is not less than 30%;
Bacterial filtration efficiency: under the specified conditions, the filtration efficiency of the averaged particles of Staphylococcus aureus aerosol with a diameter of μm is not less than 95%;
Breathing resistance: under the condition of filtration efficiency flow rate, the inspiratory resistance is not more than 49Pa, and the expiratory resistance is not more than 29.4Pa;
Synthetic blood penetration: after 2ml of synthetic blood is sprayed to the outer side of the mask at a pressure of 16.0kPa, there should be no penetration on the inner side of the mask.
The correct wearing method of surgical mask
1, distinguish the front and back
The mask is divided into front and back, above and below, the front side is mostly light blue or dark color, the reverse side is mostly white or light color, and there is a metal strip of the nose clip inside the mask for the top.
2, hand washing
Washing hands before wearing a mask, because the mask is relatively sterile, if the hand is dirty to touch the mask, will be on the hands of the dirt rubbed on the mask, the mask on the white.
3, wear
Make sure the mask is facing inward, with the end with the metal bar facing up, and hang the strings at both ends over your ears.
4.Pressing and stretching
Use both hands to press firmly on the metal strips on both sides of the bridge of the nose, so that the upper end of the mask fits tightly against the bridge of the nose, and then stretch the mask downward so that it leaves no creases and covers the nose and mouth better.
How to take off the surgical mask
1. Don't touch the outer surface of the mask
2. Don't touch the inner surface of the mask
3. Don't touch other people's used masks, to avoid cross-infection
4. Don't put it in your bag, pocket, etc. directly, which is prone to cause the risk of persistent infections, and you can fold it in reverse from the inside to the outside, and then pack it with the self-sealing bag.
5. When taking off the mask, try to avoid the contaminated area, mainly take off the ear hanging.