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SURGICAL MASK

Product Introduction:

Medical surgical masks are usually processed by components such as face masks, shaped pieces, belts, etc., and are generally made of non-woven materials, which are isolated by filtering. It is worn on the nose and mouth of medical staff in the operating room to prevent the spread of dandruff and respiratory tract microorganisms to open surgical wounds, and to prevent the body fluids of surgical patients from being transmitted to the medical staff. It plays a two-way biological protection role.

  • Feature
  • Size
  • Why Choose Us?
    Medical surgical masks are suitable for basic protection of medical personnel or related personnel, as well as protection against blood, body fluids and splashes during invasive operation. The protection level is medium and it has certain respiratory protection performance. It is mainly worn in a clean environment with a cleanliness of less than 100,000, operating in the operating room, nursing patients with low immune function, and performing body cavity puncture. Medical surgical masks can block most bacteria and some viruses, prevent medical staff from being infected, and prevent direct discharge of microorganisms carried by medical staff, which poses a threat to patients undergoing surgery. Medical surgical masks require a filtration efficiency of more than 95% for bacteria. For suspicious respiratory patients, disposable medical surgical masks should also be distributed to prevent other hospital personnel from posing a threat of infection and reduce the risk of cross-infection, but to avoid infections less effective than medical protective masks.
    It complies with the YY0469-2004 "Technical Requirements for Medical Surgical Masks" standard. Important technical indicators include filtration efficiency, bacterial filtration efficiency and respiratory resistance. The specific indicators are as follows:
    1) Filtration efficiency: Under the condition of air flow (30 ± 2) L / min, the filtration efficiency for aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 30%.
    2) Bacterial filtration efficiency: Under specified conditions, the filtration efficiency of Staphylococcus aureus aerosol with an average particle diameter of (3 ±0.3) μm is not less than 95%; the filtration rate of bacteria should be ≥95%; The filtration rate should be ≥30%.
    3) Breathing resistance: In the condition of filtering efficiency and flow rate, the inhalation resistance does not exceed 49Pa, and the exhalation resistance does not exceed 29.4Pa. When the pressure difference △ P for gas exchange on both sides of the mask is 49Pa / cm, the gas flow rate should be ≥264mm / s.
    4) Nose clip and mask strap: The nose clip should be equipped with a nose clip made of a plastic material, and the length of the nose clip should be greater than 8.0cm. Mask strips should be easy to wear, and the breaking strength at the connection point between each mask strip and the mask body should be greater than 10N.
    5) Synthetic blood penetration: After 2ml of synthetic blood is sprayed on the outer side of the mask at a pressure of 16.0kPa (120mmHg), the inner side of the mask should not penetrate.
    6) Flame retardant performance: Non-flammable materials should be used for mask materials, and the mask will burn for less than 5s after leaving the flame.
    7) Ethylene oxide residue: Ethylene oxide sterilized masks should have less than 10 μg / g of ethylene oxide.
    8) Skin irritation: The primary irritation index of the mask material should be ≤0.4, and there should be no allergic reaction.
    9) Microbiological indicators: The total number of bacterial colonies is ≤20CFU / g. Coliform bacteria, Pseudomonas aeruginosa, Staphylococcus aureus, hemolytic streptococcus and fungi shall not be detected.

    Name

    3 ply medical mask

    Surgical face mask

    Medical protective mask

    Standard (China)

    YY0969-2013

    YY0469-2011

    GB19083-2010

    Synthetic blood penetration

    Not Required

    16.0kPa120mmHg

    10.7kPa80mmHg

    Synthetic blood penetration

    Bacterial filtration efficiencyBFE

    Not Required

    95% (28.3L/min)

    No penetration

    No penetration

    95% (28.3L/min)

    (85L/min)

    Bacterial filtration efficiencyBFE

    Particle filtration efficiencyPFE

    95% (28.3L/min)

    Not Required

    95% (28.3L/min)

    30%

    1st Grade 95%

    2nd Grade 99%

    3rd Grade 99.97%

    Not Required

    Breathing resistanceΔp

    40Pa (8L/min)

    40Pa (8L/min)

    343.2Pa35mmH2O

    Breathing resistanceΔp

    40Pa (8L/min)

    40Pa (8L/min)

    (85L/min)


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