John Jay Osborn (1917–2014) was an American physician who made contributions to the early use of cardiopulmonary bypass (CPB) during heart surgery and to the postoperative care of such patients.
[2] After two years with the U.S. Army,[2] he completed a residency at New York University School of Medicine, where he developed an interest in understanding blood oxygenation.
[1] In 1954, Osborn moved westward to work at Stanford University Medical School; one source described him as "[s]eeking refuge from the blueblood New York aristocracy into which he was born.
"[1] In California, Osborn collaborated with cardiac surgeon Frank Gerbode on the development of a heart-lung bypass machine that would allow open-heart surgery.
Gerbode and Osborn's first open-heart surgery using CPB (a repair of a ventricular septal defect) was completed in 1956.