Donald Shiley, one of the co-inventors of Pfizer's Bjork-Shiley heart valve
Some years later, Shiley improved his design in cooperation with Swedish heart surgeon Viking Björk, which led to the first tilting disc heart-valve, resulting in a much better flow of blood through the valve.
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Shiley Labs developed and manufactured other products, especially tracheal and endotracheal tubes for respiration after surgery in the mouth or throat, and during anesthesia.
The history of these technologies dates back to many highly regarded names in the medical industry including Medtronic, BioMedicus, Bard, Terumo, Research Medical Inc., Shiley, Polaris Plastics, and Caplugs.