Currently, surgical masks are not as complicated as we
think. In fact, there are only three kinds of masks:
The first is the disposable surgical mask that we all see
the most. Simply put, it is also the most common surgical mask, the protective
ability of nature is not as good as the next two, there is no standard above
the mask any words, just for general medical environment wear use.
For example, if doctors do not meet special patients or
in special places, they do not belong to special departments. When they treat
patients, they will wear this kind of disposable surgical mask.
So what does it do? It has the function of filtering more
than 95% bacteria, but it is not impermeable, so doctors or nurses in the
routine injection, puncture or liquid change, this kind of operation is
generally not the occurrence of blood, fluid and other spillage, that will use
this more common surgical mask;
Second, medical surgical mask. This is actually with
ordinary disposable surgical mask the biggest difference is that its sealing is
better, for the prevention of aerosol bacteria better, but also
anti-penetration, there are more strict particle filtration requirements, must
be ≥30%!
Like our doctor again after entering the operating room,
there is a risk of respiratory tract infection, surgery, dressing change, it is
likely to occur the patient's blood, body fluids, such as spray, this time you
need to wear this medical surgical mask!
Third, the mask of medical protection: this is a kind of
medical mask with the highest level of protection, such as SARS, highly