China developed a capsule-sized, energy-autonomous micro-pacemaker https://news.cgtn.com/news/2026-01-27/Chinese-researchers-develop-capsule-sized-self-powered-micro-pacemaker-1KgEyKGkK3e/index.html China has developed a self-powered pacemaker that derives electrical energy from the heartbeat. This could pave the way for heart implants that can be used for life https://www.notebookcheck.com/Neuer-Herzschrittmacher-erzeugt-Strom-aus-Herzschlaegen-und-koennte-ein-Leben-lang-halten.1222016.0.html