Self-Powered Pacemaker Breakthrough by Engineers
Engineers at the University of Wisconsin-Madison have developed a battery-free pacemaker powered by the patient's own heartbeat. This innovation aims to eliminate the need for surgical battery replacement procedures over a patient's lifetime.
Why it matters
This technology could drastically reduce the medical risks and long-term costs associated with traditional pacemaker maintenance.
A team of University of Wisconsin - Madison researchers has developed an implantable, battery-free pacemaker that's charged by a patient's heartbeat. The device has the potential to last an entire lifetime, reducing the risks and costs associated with replacing the devices when their batteries fail.
Led by Pengfei Chen, a postdoctoral scholar in materials science and engineering at UW - Madison, the research appears in the August 19, 2026, issue of the journal Science Advances.
"For a device like this, it's not just about producing energy. Power density is the most important part. You need to get enough power in a small enough volume," says Xudong Wang, a professor of materials science and engineering who oversees Chen's research. "With our technology, we achieved a power output density an order of magnitude higher than previous nanogenerators."
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