Thanks for posting that document, I hadn’t seen it before.
I’m coming from the viewpoint that the main problem is acceptance. Many simple solutions are possible but if it fails user acceptance then nothing else matters. A big part of acceptance I believe is simplicity and transparency.
To that end, in that document, where it gives a pressure in cmH2O, we can prescribe that pressure with a water column of the given height. Where it mentions a volume in cm3, we can show that volume of air displacing water in a graduated flask. By using mechanical components, the operation and function are obvious. Exception is the electronic timer modules, but these conceptually simple to understand and test.
With these components, we can achieve mandatory mode, PRVC, SIMV-PC, pressure control (volume control might be tough), CPAP, FiO2 to some extent. I’m still thinking about peak/plateau pressure, that might not be achievable.
I’m not under any delusions. This isn’t the sort of thing GOSH does. But I’m putting it out there anyway just in case.