Sarah Fowler, Mississippi Clarion Ledger Published 9:21 p.m. ET April 7, 2020 CLOSE Dr. Charles Robertson, an anesthesiologist at UMMC, demonstrates the new ventilator he developed as an emergency backup. Mississippi Clarion LedgerJACKSON, Miss. — As states across the country beg for ventilators to help patients suffering with respiratory issues from COVID-19, the University of Mississippi Medical Center is building its own makeshift ventilators with supplies found at a hardware store. Dr. Charles Robertson, a UMMC pediatric anesthesiologist and the mastermind behind the idea, said he set out to make the “absolute simplest ventilator we can build with parts available in any city, you don’t need special tools to put together and can be done quickly as the need arises.”Made with “primarily a garden hose, a lamp timer and electronic valve,” the ventilator, named the Robertson Ventilator, for less than $100, can be assembled in approximately 20 to 30 minutes, meaning a dedicated team of four to five could produce nearly 100 in a day if needed, he said. Demonstrating the functionality of the machine at a news conference Tuesday afternoon, Robertson turned on a ventilator hooked up to a mannequin. The mannequin’s chest began to rise and fall. The Robertson Ventilator: ‘The brain

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