Medical Surgical Mask

The medical surgical mask is used to wear on the mouth and nose of medical staff in the operating room, so as to prevent the spread of dandruff and respiratory tract microorganisms to the open surgical wound surface, and prevent the body fluid of surgical patients from spreading to the medical staff, playing a two-way biological protection role.

brief introduction

Medical surgical mask is used by clinical medical staff in the process of invasive operation. It can cover the user's mouth and nose, and provide a physical barrier to prevent the direct penetration of pathogenic microorganisms, body fluids, particles, etc.

Structure and composition of medical surgical masks

It is usually made of mask, setting piece, strap and other components, and is generally made of nonwovens. It is isolated by filtration.

Material of medical surgical mask

Medical surgical masks are mainly made of polypropylene. These microfibers with unique capillary structure increase the number and surface area of fibers per unit area, so that the meltblown cloth has good filtration and shielding properties.

Main technical indexes of medical surgical masks

The main technical specifications of medical surgical masks are as follows:

(1) Filtration efficiency: under the condition of air flow rate (30 ± 2) l / min, the filtration efficiency of sodium chloride aerosol with aerodynamic median diameter of (0.24 ± 0.06) μ m should not be less than 30%;

(2) Bacterial filtration efficiency: under the specified conditions, the filtration efficiency of Staphylococcus aureus atcc6538 is not less than 95%;

(3) Pressure difference: under the specified conditions, the pressure difference between the two sides of the mask for gas exchange should not be greater than 49pa;

(4) Penetration of synthetic blood: after 2ml of synthetic blood is sprayed at the pressure of 16.0kpa (120mmhg) to the outer side of the mask, there should be no penetration on the inner surface of the mask.

Prevention types and application of medical surgical masks

It is used to wear on the mouth and nose of medical staff in the operating room to prevent dandruff and respiratory tract microorganisms from spreading to the open surgical wound surface, and prevent the body fluid of surgical patients from spreading to the medical staff, so as to play the role of two-way biological protection.

How to wear mask correctly

Proper wearing of masks is an effective way to block the transmission of respiratory secretions. Medical surgical masks can prevent the spread of respiratory infectious diseases. The wearing methods are as follows:

(1) Before wearing the mask, hands should be cleaned. During wearing the mask, hands should not touch the inner side of the mask to reduce the possibility of contamination;

(2) When wearing the mask, distinguish the inside and outside, up and down. The light color side is inside, and the dark side is outside. One end of the metal strip (nose clip) is above the mask, and the folding surface is fully unfolded;

(3) Put the side with the nose clip upward, cover the mouth, nose and mandible completely, adjust the lower end of the mask to the appropriate position of the mandible, hang the rubber band on both sides of the ear or tie the bandage at both ends to the back of the head, and then press the nose clip to make the mask completely fit with the face.

matters needing attention

(1) When purchasing and using medical surgical masks, you should purchase them in regular hospitals and pharmacies. At the same time, pay attention to the production batch number, production date and service life of the product's outer packaging. Production license, product registration number and other information, as well as detailed product instructions;

(2) Before use, please check whether the package is in good condition, confirm the external packaging mark, production date and validity period, and use it within the sterilization validity period;

(3) It should be ensured that the mask covers the bridge of the nose to the mandible to obtain the expected protective effect;

(4) It is forbidden to reuse medical surgical masks;

(5) Medical surgical masks should not be used if the package is damaged before use;

(6) Those allergic to nonwovens should be used with caution;

(7) Medical surgical masks should be treated according to the requirements of the hospital and environmental protection department.

Suggestions for use

It is not recommended for healthy public to wear masks in their daily life and normal social activities. If you need to contact with patients with epidemic diseases, or if you are in a crowded and airless place for a long time, you should wear a mask for personal protection