>https://hackaday.com/2020/03/23/mit-ventilator-designed-with-common-manual-resuscitator-submitted-for-fda-testing/
but these is a completely different design. With some little correction can work for long time. But for personal use only. These tipe of project need more and more test and approval ... FDA is for USA only, here in europe there are more relues about. WIth actual rules (like EC1935 here in Italy) is not possible use that design in clean room. But is possible print some mold and create hygenic component for these object. Il giorno mar 24 mar 2020 alle ore 16:29 Thomas J Powderly <tjt...@gmail.com> ha scritto: > > Thanks Dave > > On 3/24/20 10:02 PM, dave engvall wrote: > > Implications? > > > > Gleaned from a medical site. > > > > "Coronavirus is enveloped, meaning the virus has coating on the > > outside of it. As it happens, the envelope means that the virus > > doesn’t survive well outside of the body—they usually can’t last > > longer than 24 hours outside of the body and usually only last less > > than 12. This is a good thing in terms of containing an outbreak. It > > also means coronavirus can be killed by hand sanitizer and soaps, > oh yes, wash your hands a lot, and use bar soap. The lather is important > > which isn’t the case with other types of viruses (most notoriously > > norovirus), so your biggest defense against coronavirus is washing > > your hands. The problem with viral envelopes is that they allow the > > virus to more easily evade your immune system. So, the enveloped virus > > has a disadvantage outside of a person, but once it gets in, the > > envelope gives it a dangerous edge. Enveloped viruses (which include > > influenza) tend to cause longer, more problematic infections for this > > reason and are more difficult to develop a vaccine for because of the > > envelope". > > > Yes, it makes me think that parts of any mechanical device used must be > one-use only. > > Please look at https://e-vent.mit.edu/ ( there's quite a few efforts > around the world but this one has been submitted for approval or at > least review ) > > I'm thinking of ordering those parts just to get familiar with the concepts. > > Maybe I could repair or build units of similar design. > > The MedCram videos seem to be good ( i watched and understood the 1st 2 > do far ) > > https://www.youtube.com/watch?v=i6hmGVBbIJk > > > > Remember, FDA regs are meant to be all encompassing not just virus > > specific. A virus is an obligate intracellular parasite. They are not > > very tough extracellular. I think this makes the sterility barrier > > much lower. However, a damp warm environment is just perfect for > > bacterial and fungal growth. Still having a sub micron filter in line > > screens a lot of junk. > > > hmmm sub micron thats easy to breath thru, well its not on that path > neccesarily, its on the exhaust. > > Changing subjects slightly I read an unconfirmed note that one of the > > early symptoms of corona virus infection was a loss of smell. > > Interesting but single source. > > I've heard it on DW and AlJazirah and Thai PBS, both taste and smell are > affected. > > > > > Dave > > > > > Thx Dave stay well > > TomP > > > > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
