World's Smallest Heart Pacemaker Unveiled, And It's The Size Of An Apple Seed The device could transform heart surgery in newborn babies.

Health ‘World’s smallest pacemaker’ is implanted with a syringe and dissolves when it’s no longer needed By Stephen Beech, SWNS Published April 3, 2025, 10:00 a.m. ET ...

When that small device detects an irregular heartbeat, it shines a light that activates the pacemaker. These light pulses can penetrate a patient’s skin, bones and muscles.

The heart may be small, but its rhythm powers life. When something throws that rhythm off—especially after surgery—it can become a race against time to restore balance. For decades, doctors ...