Pacemakers are life-saving devices that regulate irregular heartbeats using electrical pulses. Since the first fully implantable pacemaker was introduced in 1958, the technology has steadily evolved—becoming smaller, more efficient, and less invasive.
Now, scientists have developed the world’s smallest pacemaker—so tiny that it’s smaller than a grain of rice. This temporary device is injected into the body, controlled with light signals, and dissolves naturally after use, eliminating the need for surgical removal.
Although this groundbreaking pacemaker is still years away from human testing, researchers are excited about its potential. It could open the door to new, less invasive treatments for heart conditions and reduce the risks associated with permanent implants.
With millions of people around the world relying on pacemakers, this innovation could mark a major leap in medical technology, offering a safer and more flexible alternative for temporary heart rhythm management.