T/ZSA 21-2020 Medical protective mask
T/ZSA 21-2020 Medical protective mask
Basic Information
Scope
Scope: This document specifies the material and structural composition, technical requirements, test methods, marking and usage instructions, packaging and storage of medical protective masks (hereinafter referred to as "masks"). This document applies to disposable self-sucking filter medical protective masks used in medical environments, which feature a nose and mouth or full-face sealing structure, enhanced protective lenses, and filtration devices to filter airborne particles, block droplets, blood, body fluids, and secretions, providing comprehensive protection for healthcare workers' nose, mouth, and face. Main technical content: Currently, medical protective masks are generally designed with tight elastic straps and relatively high airflow resistance. Long-term wear may cause facial marks, injuries, and breathing difficulties. Moreover, if the sealing is not tight during use, air leakage from the nose and face may occur, significantly reducing the actual filtration efficiency and failing to achieve effective protection. Existing ordinary medical protective masks only protect the nose and mouth. To achieve comprehensive protection for the head and face, it is still necessary to wear protective hats, medical caps, and goggles. Clinical demand urgently requires new nose and mouth protection products to provide healthcare workers with more comprehensive, effective, and convenient protection for the nose and mouth, or even the head and face. Currently, the standard GB 19083-2010 "Technical Requirements for Medical Protective Masks" clearly stipulates the technical requirements, test methods, marking and usage instructions, packaging, transportation, and storage of ordinary medical protective masks mainly composed of nonwoven fabrics, meltblown nonwoven fabrics, nose clips, and elastic straps. However, the technical requirements in this standard cannot cover medical protective masks with new structures and materials. It is urgent to supplement and standardiz