Moran Campbell, Canadian physician and academic, invented the venturi mask (born 1925)

Edward James Moran Campbell, was a Canadian physician. He was the founding Chair of the Department of Medicine at McMaster Faculty of Health Sciences from 1968 to 1975. He was also the inventor of the Venturi mask.

The venturi mask, also known as an air-entrainment mask, is a medical device to deliver a known oxygen concentration to patients on controlled oxygen therapy. The mask was invented by Moran Campbell at McMaster University Medical School as a replacement for intermittent oxygen treatment. Campbell was fond of quoting John Scott Haldane's description of intermittent oxygen treatment; "bringing a drowning man to the surface – occasionally". By contrast the venturi mask offered a constant supply of oxygen at a much more precise range of concentrations.