Amazing. First the respirator valves in Italy and now this. I never really thought of 3D printing for medical devices but seeing this heck yeah every hospital could use one. And the medical corps of the military branches.
Outside of medical, I think this will jump start demand for 3D printing machines all over once the dust settles post CV.
Now somebody ought to design a 3D printed half face mask that uses something common, like a cut down panty shield as a replaceable filter.*
*Dunno if you can breath through a panty shield or how effective it is against CV.