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Medical surgical mask

Medical surgical masks are used as disposable masks worn by clinical medical staff during invasive operations.They can cover the mouth and nose of the user and provide a physical barrier to prevent the direct penetration of pathogenic microorganisms,body fluids,and particles.
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　　Introduction

　　Medical surgical masks are used as disposable masks worn by clinical medical staff during invasive operations.They can cover the mouth and nose of the user and provide a physical barrier to prevent the direct penetration of pathogenic microorganisms,body fluids,and particles.

　　The structure and composition of medical surgical masks

　　It is usually made of masks,shaped parts,straps and other components,and is generally made of non-woven materials.Isolate through filtering.

　　Material editing of medical surgical masks

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

　　Main technical indicators of medical surgical masks

　　Medical surgical masks need to comply with my country'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 sodium chloride aerosol with aerodynamic median diameter(0.24±0.06)μm is not less than 30%;

　　(2)Bacterial filtration efficiency:under specified conditions,the filtration efficiency for Staphylococcus aureus ATCC6538 is not less than 95%;

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

　　(4)Synthetic blood penetration:After 2ml of synthetic blood is sprayed on the outside of the mask at a pressure of 16.0kPa(120mmHg),there should be no penetration on the inside of the mask.

　　Types of prevention and application of medical surgical masksedit

　　It is used to wear on the mouth and nose of medical staff in the operating room to prevent dander and respiratory microorganisms from spreading to the open surgical wounds,and to prevent the body fluids of surgical patients from spreading to medical staff,playing a two-way biological protection role.

　　The correct way to wear a mask

　　Wearing a mask correctly is an effective means to block the spread of respiratory secretions.Choosing a medical surgical mask can well prevent the spread of infectious diseases of the respiratory system.The wearing method is as follows:

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

　　(2)When wearing,distinguish the inside,outside,top and bottom of the mask.The light-colored side is inside and the dark side is facing out.One end of the metal strip(nose clip)is above the mask,and the folded surface is fully unfolded;

　　(3)Put the side with the nose clip up,wrap the mouth,nose,and lower jaw,adjust the lower end of the mask to the proper position of the lower jaw,hang the elastic bands on both sides of the ears or tie the straps at both ends to the back of the head,And then press the nose clip tightly to make the mask fit the face completely.

　　Precautions

　　(1)When buying and using medical surgical masks,go to regular hospitals and pharmacies to buy them,and pay attention to the production batch number,production date,and expiration date on the outer packaging of the product.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 expiration date,and use it within the sterilization expiration date;

　　(3)Ensure that the mask covers the bridge of the nose to the lower jaw after unfolding to obtain the expected protective effect;

　　(4)Disposable medical surgical masks are not allowed to be reused;

　　(5)If the package of medical surgical mask is found to be damaged before use,it is prohibited to use it;

　　(6)Use with caution if you are allergic to non-woven fabrics;

　　(7)After use,medical surgical masks should be disposed of according to the requirements of hospitals and environmental protection departments.

　　Recommendations

　　Healthy people are not recommended to wear masks in daily life and normal social activities.If you need to be in contact with epidemic patients,or stay in densely populated and unventilated places for a long time,you should wear a mask for personal protection.

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