Ventilators are not lacking a design. There are many functional designs across a variety of medical device manufactures (most of which are sub-$1000). China is

Ventilators are not lacking a design. There are many functional designs across a variety of medical device manufactures (most of which are sub-$1000). China is already ramping up production to assist other countries. The only thing open sourcing a design does is encourage DIY home builds, which is wildly irresponsible in a time of panic.