Jorge Reynolds Pombo is an electrical and bio- engineer born in Colombia (June 22, 1936, Bogota), despite the popular belief in Colombia, Jorge Reynolds Pombo did not invent the pacemaker, that was done in 1952 by the American Paul Zoll.
In 1957, Earl Bakken of Minneapolis, Minnesota, produced the first wearable external pacemaker for a pediatric patient of C.
Walton Lillehei.
The Swede Rune Elmqvist (1906-1996) developed the first pacemakern internally implanted in 1958.