Doctors at UTMB build ventilator out of common hospital supplies KHOU 11 March 23, 2020 KHOU 11, March 23, 2020 Health care professionals fighting COVID-19 say there is a shortage nationally of ventilators. Now UTMB’s Chris Zahner and Aisen Chacin have developed a pressure cuff emergency ventilator using common hospital supplies. « Back | The Newsroom »