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Mask

Medical surgical mask

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Medical surgical masks are used as disposable masks by clinical medical personnel during invasive procedures, etc., which can cover the user's mouth, nose, etc., and provide a physical barrier for preventing direct transmission of pathogenic microorganisms, body fluids, particles, etc.

It is usually processed by components such as masks, shaped parts, and straps, and is generally manufactured from non-woven fabric materials. It plays a role of isolation through filtration.

Medical surgical masks mainly use polypropylene as the main raw material. These ultra-fine fibers with unique capillary structure can increase the number and surface area of fibers per unit area, therefore making the melt-blown cloth with good filtering and shielding properties.

Medical surgical masks should comply with China's pharmaceutical industry standard YY 0469-2011 "Technical Requirements for Medical Surgical Masks". The main technical indicators are as follows:

(1) Filtration efficiency: Under the condition of air flow (30 ± 2) L / min, the filtration efficiency of aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol shall be no less than 30%;

(2) Bacterial filtration efficiency: Under specified conditions, the filtration efficiency of Staphylococcus aureus ATCC6538 shall be no less than 95%;

(3) Pressure difference: Under specified conditions, the pressure differential between the two sides of the mask for gas exchange shall not exceed 49 Pa;

(4) Synthetic blood penetration: After 2ml of synthetic blood is sprayed towards the outer side of the mask at a pressure of 16.0kPa (120mmHg), no penetration should occur on the inner side of the mask.

It is worn on the mouth and nose of the medical staff in the operating room to prevent the spread of dandruff, respiratory microorganisms to open surgical trauma, and to prevent the spread of bodily fluids from the surgical patient to the medical staff, acting as a bi-directional biological protection.

Wearing a mask properly is an effective way to block the spread of respiratory secretions. Choosing a medical surgical mask can prevent the spread of respiratory diseases. The wearing method is as follows:

(1) Wash your hands before wearing a mask, avoid touching the inside of the mask with your hands during the wearing process to reduce the possibility of contamination of the mask;

(2) When wearing, distinguish the inside and outside, top and bottom of the mask,  light-colored side is inside, dark-colored side is facing out, and the metal strip (nose clip) is topside of the mask, and the folded side should be fully extended;


(3) Put the side with the nose clip upward, fully cover the mouth, nose, and mandible, adjust the bottom side of the mask to the proper position of the mandible, hang the elastic bands on both sides of the ears, or tie the straps to the back of the head, then press the nose clip tightly so that the mask fits the face completely.

Precautions

(1) When purchasing and using medical surgical masks, go to regular hospitals and pharmacies. At the same time, pay attention to the outer packaging of the product with a production batch number, production date, and period of use, production license, product registration number and other information, as well as detailed product instructions;

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

(3) After being unfolded, make sure that the mask covers from the bridge of the nose to the lower jaw, in order to obtain the expected protective effect;

(4) Disposable medical surgical masks are prohibited from repeated use;

(5) If the packaging of medical surgical masks is damaged before use, stop using it;

(6) Use with caution when allergic to non-woven fabrics;

(7)Medical surgical masks should be disposed according to the requirements of hospitals and environmental protection departments after using.

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