Pacemakers are — even at their tiniest — intrusive bits of metal wired into the heart. But now scientists have come up with something completely different: a “biological pacemaker” in a pig made by reprogramming the heart’s own cells with a modified virus carrying a specific gene.
Wilson Greatbatch has died at the age of 92. He was a lifelong inventor. And like many inventors, his most notable creation, the implantable cardiac pacemaker, was discovered accidentally.