The emergency ventilator is called RapidVent. From their Facebook post:

A team led by The Grainger College of Engineering and Carle Health has produced a prototype emergency ventilator to help address the expected surge in the need for respiratory care associated with the COVID-19 pandemic. The Illinois RapidVent emergency ventilator was developed in less than a week, and preliminary tests show performance equivalent to commercial devices. Additional tests are ongoing.
Learn more about the prototype at http://rapidvent.grainger.illinois.edu

“Our team is living the Apollo 13 movie,” said William King, the overall project leader. “We have dropped everything else to work around the clock to help respond to the COVID-19 crisis. We have a team of brilliant and dedicated people that made something that actually works in less than one week. It’s very inspiring. We hope that we can engage even more people to work on the global response to COVID-19 as we continue to develop the prototype.”

Image from Grainger College of Engineering Facebook page.