Italian engineers are making ventilators out of diving masks with 3D-printed respiratory valves to keep hospitals supplied at the height of the coronavirus crisis.

A Brescia-based startup firm has offered contraptions for free to local hospitals in the region of Lombardy which is at the centre of Europe’s worst virus outbreak.
The company is gearing up to make 100 of the chess piece-like valves per day and hand them out to medics who are trying to bring the crisis under control.
The valves connect oxygen masks to respirators used by coronavirus patients suffering from respiratory complication. Respiratory problems are among the most severe symptoms of Covid-19, the disease caused by the new coronavirus.