the.com/pacemakers
a metronome for a heart that forgot the beat.
means a small implanted device that sends electrical pulses to make the heart contract at a normal rhythm.
from the first workable implantable version came out of the lab of engineer earl bakken in 1957, after a wall-powered pacemaker failed during a power outage and he built a battery-powered fix overnight, later commercialized with surgeon c. walton lillehei.
battery lifelasts roughly 8 to 12 years
first patient1958, sweden, arne larsson, lived decades more
size shrinkfrom wall-mounted box to coin-sized implant
wireless kindleadless models now fit inside the heart itself
for instance
arne larsson — first implant recipient, 1958, outlived surgeon and inventor
medtronic hancock — early bakken-era device that launched a whole industry
micra transcatheter — leadless pacemaker inserted via catheter, no chest surgery