[unclebilly]

Mahler - you seem to have some knowledge here.

What air volume is needed per aspiration, how much pressure is needed, how many aspirations per minute?

Help us out with this information. That would be far more useful than the tirade you are on. We get it, you would rather die waiting for a brand name vent that took years to get approval on. The rest of us want to built an improvised splint so we can walk out of the Bush with a broken leg because that could be the only option available.