Source: https://gisanddata.maps.arcgis.com/apps/opsdashboard/index.html#/bda7594740fd40299423467b48e9ecf6

* About 25% of admitted patients required ventilation. Resources are overwhelmed in the province, and currently two hospitals are being built.

https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)30183-5/fulltext

* In any current or future pandemic, patients are likely to need mechanical ventilation. It is likely that scenarios arise where there are more patients than ventilators or hospital beds.

Given those conditions, does it make sense to create an open source ventilator project. I'm not proposing this as a treatment of choice, but only as better-than-nothing line of defense.

I think you could potentially make designs out of a single motor, and a bladder. one of these:

https://www.amazon.com/gp/product/B07NPVL1GD/ref=ppx_yo_dt_b_asin_image_o01_s00?ie=UTF8&psc=1

It even looks possible to create mostly airtight structures out of duct tape, so a duct-tape bladder might be possible.

https://www.instructables.com/id/Duct-Tape-Inflatable-Ball/

Is this a crazy idea? Is my reasoning sound? Does it exist? Thoughts?