The first variable rate pacemaker was developed and implanted. (1 jan 1960 ano – 1 jan 1966 ano)

Descrição:

Cardiothoracic surgeon Leon Abrams, with medical engineer Ray Lightwood, developed and implanted the first variable rate pacemaker in 1960. The first implant of this device took place in March 1960, with two further implants taking place in April 1960. By 1966, 56 patients had received implants.