In the late 1920s, J. Deryl Hart invented a variable pressure bed (or air mattress) to ease patient’s bed sores. Hart patented many of his inventions, which also included a pneumatic bed, an operating room supply table, and a surgical basin with a...
J. Deryl Hart and surgical team in protective clothing operating under ultraviolet lights. In 1936, Dr. J. Deryl Hart originated the use of ultraviolet radiation to control airborne infections in surgical operating rooms, a technique that became...