Introduction of Disposable Medical(Surgical) Mask
Disposable medical(surgical)mask can block particles larger than 4 microns in diameter, and tests conducted in the respirator seal laboratory in a hospital setting showed that they had a transmittance of 18.3 percent for particles of 0.3 microns, according to general medical(surgical)standards.
Disposable medical(surgical)masks are mainly used in medical(surgical)clinics, laboratories, operating rooms and other high-demand medical(surgical)environment, the safety factor is relatively high, suitable for the basic protection of medical(surgical)personnel or related personnel. In the process of medical(surgical)invasive operation, the spillage of blood, body fluid and spatter plays a protective role. It also prevents the exhalation of microbes by medical(surgical)personnel, posing a threat to patients undergoing surgery.
Disposable medical(surgical)mask have a strong resistance to bacteria and viruses. In daily life, they can be used to prevent the spread of influenza, respiratory diseases and other infectious diseases. They can also prevent patients from spreading viruses to others.
Typically made of nonwoven materials, including filter layers, mask straps, and nose clips. The standard medical(surgical)mask has three layers. The outer layer is waterproof to prevent droplets from entering the mask. The middle layer has filtration function, which can block 5 ~ 5 ~ m particles of >90%. The inner layer of the near muzzle is used for moisture absorption.
The material of medical(surgical)mask
Disposable medical(surgical)mask use polypropylene as the main raw material. The fiber diameter can reach 0.5-10 microns. These ultrafine fibers with unique capillary structure increase the number of fibers per unit area and surface area, so that melt-spray cloth has good filtering, shielding, insulation and oil absorption.
The mask is made of non-flammable material and burns after leaving the flame <5s; For masks sterilized with ethylene oxide, the residual amount of ethylene oxide should be less than 10 g/g. The primary skin irritation index of the mask material should be no more than 0.4, and there should be no allergic reaction.
When wearing medical(surgical)masks, appropriate levels should be selected according to the transmission type and risk of pollutants, not too high or too low. medical(surgical)disposable medical(surgical)mask can cut off most of the bacteria and some viruses, can prevent medical(surgical)staff infected, and can prevent the spread of medical(surgical)personnel to the outside world pathogenic bacteria, so is suitable for clinical medical(surgical)staff basic protection, that is used for clinical medical(surgical)staff to wear in the process of invasive operation, for in patients undergoing treatment and the implementation and operation of the medical(surgical)staff to provide protection, prevent the spread of blood, body fluids, and splash.
During the epidemic of infectious diseases, disposable medical(surgical)mask can effectively prevent the spread of pathogenic bacteria and play a preventive and protective role for all kinds of personnel in places with relatively dense personnel, such as outpatient guidance or consultation, elevator, emergency, etc.
Wearing a medical(surgical)mask correctly is an effective means to prevent the spread of respiratory secretions. The wearing method is as follows:
(1) clean your hands before wearing the mask, avoid touching the inner side of the mask during wearing the mask, and reduce the possibility of contamination of the mask;
(2) when wearing the mask, distinguish the inside and outside, the top and bottom of the mask, the light-colored face is inside, the dark-colored face is facing outside, the metal strip (nose clip) at one end is the top of the mask, fully unfold the folded face;
(3) cover the mouth, nose and jaw with one side of the nose clip upward, adjust the lower end of the mask to the appropriate position of the jaw, attach the elastic bands on both sides to the ears or tie the binding bands on both ends to the back of the head, then press the nose clip to make the mask completely fit the face.
In daily life and normal social activities, the healthy public is not recommended to wear masks. Personal protection should be provided by wearing a mask if contact with an epidemic patient is required, or if the patient is in a densely populated and unventilated place for an extended period of time.