Overview of medical masks

Medical masks are protective equipment used in medical environments. Their main function is to block droplets, blood, body fluids and other pollutants and reduce the risk of cross-infection.According to the protection level, it can be divided intoOrdinary medical masks, medical surgical masks and medical protective masks (such as N95), its core structure is usually composed of non-woven fabrics, melt-blown fabrics and nose clips.This article will start from the definition, classification, principle of action, usage scenarios and production standards, as well as common brand information.

Classification and standards of medical masks

Medical masks are divided into three categories according to their protective performance:Ordinary medical masks(Conforms to YY/T 0969 standard and is suitable for general health protection),medical surgical mask(Meet YY 0469 standard, can block blood penetration) andmedical protective mask(Comply with GB 19083 or NIOSH N95 standard for use in high-risk environments).For example, N95 masks have a filtration efficiency of ≥95% for non-oily particles.Different categories are suitable for scenarios such as outpatient clinics, operating rooms, or infectious disease prevention and control.

Principle of action and material

The protective performance of medical masks relies on a multi-layer structure: the outer layer of waterproof non-woven fabric blocks droplets, the middle layer of melt-blown cloth absorbs particles through electrostatic charging, and the inner layer of skin-friendly material improves comfort.tomedical surgical maskFor example, its bacterial filtration efficiency (BFE) is ≥95%, and the protective mask also needs to pass a tightness test.The Chinese Center for Disease Control and Prevention points out that wearing it correctly can significantly reduce the risk of respiratory disease transmission.

Precautions for use

When wearing, make sure the mask completely covers your mouth and nose and avoid touching the outer layer. It is recommended that the mask be used for no more than 4 hours at a time.The National Health Commission emphasizes that the general public can use disposable medical masks in non-intensive places, while medical staff should choose surgical or protective-grade masks when coming into contact with patients.Discarded masks must be treated as medical waste to prevent secondary pollution.

Summary and common brands

Medical masks are an important line of defense for public health, so be careful when choosing themMedical device registration certificate number(For example, Yu Machinery Note No. 2020214xxxx).Well-known domestic brands include Winner, Zhende and the N95 series produced by 3M.The following table lists some product information:

Citing sources: China's National Medical Products Administration (NMPA) "Medical Device Classification Catalog"; National Health Commission's "Guidelines for the Public's Scientific Wearing of Masks"; 3M Company's official website product technical documents.