World's Smallest Injectable, Light-Controlled Pacemaker Developed
2025-04-08
Scientists have developed the world's tiniest temporary pacemaker—smaller than a grain of rice, injectable, light-controlled, and bioresorbable. This breakthrough aims to help children with congenital heart defects and adults recovering from heart surgery. Unlike traditional pacemakers, it eliminates the need for invasive implantation and removal, avoiding risks like the internal bleeding that contributed to Neil Armstrong's death in 2012. Successfully tested in animals and human tissue, human trials are expected in 2-3 years. Future applications could extend to nerve regeneration, wound healing, and smart implants.