Researchers promote a small medical implant from more than 100 feet away

Traditionally, the use of radio waves to communicate with a device within a human body has been difficult because waves extend as they pbad through human tissue. But MIT researchers, working with scientists at Brigham and Women's Hospital, created a new type of antenna system that overcomes this problem and has allowed them to communicate and feed their implantable devices from a considerable distance. When the device was embedded 10 centimeters deep inside a pig, the researchers could send energy from up to a meter away. When the device was just below the surface of the skin, it could be fed from a distance of up to 38 meters.

"Currently there is a tradeoff between how deep you can move and how far you can get out of the body," Fadel said. Adib, an badistant professor at the MIT Media Lab, said in a statement. "Although these small implantable devices do not have batteries, we can now communicate with them from a distance outside the body," he added. "This opens up a completely new type of medical applications."

Scientists are now working to improve the efficiency of the system and expand the distances from which they can communicate with the devices. Your work will be presented at the annual conference of the Informatics Machinery Association Special Interest Group on Data Communication in August.

Image: MIT Media Lab

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