ARRL New published this story. http://www.arrl.org/news/view/radio-amateurs-team-up-to-help-university-design-low-cost-ventilator
Volunteers are responding to the call for help from Gordon Gibby, MD, KX4Z to make low-cost ventilators to help address the critical shortage of these units amid the COVID-19 crisis.
Some more details are available at the link above.