the people's ventilator is now ~peer review official~ 😌
we tried for a long time, but couldn't find a way through the US process, even with an EUA, without a corporate liability sponsor which required us to sacrifice the IP being fully copyleft. you need to have someone to sue in this system, so someone has to be making money. so we meet the FDA benchmarks, but would never be approved by a regulator. this is a vent of last resort, a "foundation" monolith, and a research vent for now.
like the model of open source being inspectable and less error prone than just throwing proprietary engineering time at it is something that structurally works better for most problems, but the stakes are too high to use it to save a life if you have any other option that's legal without years of battle testing.
(but pressure control way way less traumatic to the lungs, it just requires active feedback, where volume control is just squeezing a bag. we used a PID but some other engineers made an ML-based contr system for getting the right pressures with the hardware. swappable control logic, swappable GUI, swappable hardware interface, swappable hardware configuration.)
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