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New Wireless Power Technology to Energize Medical Implants Deep Inside Body

May 4th, 2017 Medgadget Editors News

A collaboration of scientists from Brigham and Women’s Hospital, Massachusetts Institute of Technology, and Draper Laboratory, an engineering firm, have been working on a wireless system to power electronic implants placed within the gastrointestinal (GI) tract. Batteries are currently the only practical option for most implants, but their lifetime is limited and it is difficult to overcome the incompatibility of the mucosal lining with the batteries by encasing them somehow. Moreover, near-field wireless power that’s already used to power some implants that are very close to the surface, such as cochlear implants, doesn’t work for electronics that would be located deeper inside the body. The research team has now published in journal Scientific Reports on how they were able to create and wirelessy power an electronic device as it traversed through a pig’s GI tract.

Their technology relies on a midfield coupling transmission approach, one that uses higher frequencies than near-field technologies, successfully beaming enough energy from an external antenna to one inside the implant to power a number of sensors, some of which may include gas analyzers, thermometers, and heart rate meters. Additionally, the beamed power is enough to energize implants that can release a drug cargo into its environment. Specifically, they were able to deliver 37.5 μW, 123 μW, and 173 μW of power to the implant, yet while keeping the level of radiation emitted below acceptable safety limits.

Study in Scientific Reports: Wireless Power Transfer to Millimeter-Sized Gastrointestinal Electronics Validated in a Swine Model…

Via: Brigham and Women’s Hospital…

Medgadget Editors

Medical technologies transform the world! Join us and see the progress in real time. At Medgadget, we report the latest technology news, interview leaders in the field, and file dispatches from medical events around the world since 2004.

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