Wireless charging firm brings coil technology to medtech

Resonant Link, the wireless charging company spun out of Dartmouth, has announced it is bringing its coil technology to the medical industry. 

The wireless chargers are now available to support implantable devices like pacemakers, neurostimulators, and ventricular assist devices (VADs) for faster recharging, deeper implant depths, simpler alignment for patients, and smaller implants, with the goal of eliminating the need for surgeries to replace dead batteries forever. 

Dr. Grayson Zulauf, CEO of Resonant Link, said: “Patients need non-invasive power to live their best lives. Resonant Link’s technology enables small, fast, and easy-to-use wireless charging, and we can’t wait to work with our partners to make wireless power the standard for implantables.”

Resonant Link’s multi-layer self-resonant structure (MSRS) is a wireless charging technology with 5-10x higher performance than is possible with existing technologies. The MSRS breaks the limits of traditional wireless charging coils by changing the geometry from 2-D to 3-D, enabling faster recharging, deeper implant depths, simpler alignment for patients, and smaller implants. Resonant Link’s chargers can reach over 99% efficiency and support implant depths up to 6cm, all while meeting FDA-mandated temperature limits for implants. 

Resonant Link is currently working with five medical device partners across seven different patient indications, helping the industry unlock wireless power in applications where it was not previously possible. Resonant Link’s chargers eliminate hospital stays, infections, discomfort, recovery time, and deaths caused by extra leads, surgeries, and drivelines.

Dr. Aditya Bansal, surgical director of the Mechanical Assist Device Circulatory Support Program at The Ochsner Medical Centre in New Orleans, said: “Drivelines are the Achilles heel of VAD therapy, complicating our patients’ quality of life with chronic infections that require long-term antibiotic therapy and repeated hospitalisations. Resonant Link’s boost to wireless charging efficiency is going to be a game-changer for our patients with heart failure.”

Dr. Kevin Kwaku, assistant professor of medicine and director of Cardiac Electrophysiology at Dartmouth College, said: “The ability to achieve faster, more efficient charging with Resonant Link’s technology represents a critical evolution in the development of the next-generation of electronic medical implantable devices.”