There is a solution to fix the possible shortage of hospital C-PAP masks for sub-intensive therapy.
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It’s the construction of an emergency ventilator mask, realized by adjusting a snorkeling mask already available on the market.
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This valve is one of the three components of the emergency ventilator mask. This should be seen as a last resort mask and is by no means a replacement for commercial masks.

Spentys can quickly adapt this open-source design to the various breathing apparatus that will be used in the hospitals.