While others have been able to control robotic limbs with their minds, the technique is new enough that dual-control has never been tried before.
Credit: Johns Hopkins

History was made when the first bilateral shoulder-level amputee was able to wear and simultaneously control two prosthetic limbs. The amazing part? He was able to operate the system by simply thinking about moving his limbs.

The groundbreaking event took place at Johns Hopkins Applied Physics Laboratory, where they’ve been working to develop Modular Prosthetic Limbs as part of the Revolutionizing Prosthetics Program over the past decade.

Les Baugh was the man who made the limbs come to life. Baugh lost both arms in an electrical accident 40 years ago and until now, did not think having two functional, mind-controlled prosthetic limbs was in the realm of possibility.

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The skin is embedded with ultrathin, single crystalline silicone nanoribbon, which enables an array of sensors.
Credit: Kim et al./Nature Communications

We’ve talked about the advancements in prosthetic limbs in the past, but now a group of researchers out of Seoul National University are taking innovation in prosthetics one step further with this new “smart skin.”

Researchers from the Republic of Korea have developed a stretchy synthetic skin embedded with sensors, which will be able to help those with prosthetics regain their sense of touch.

This from “Stretchable silicon nanoribbon electronics for skin prosthesis” in the journal Nature Communications:

This collection of stretchable sensors and actuators facilitate highly localized mechanical and thermal skin-like perception in response to external stimuli, thus providing unique opportunities for emerging classes of prostheses and peripheral nervous system interface technologies.

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The prosthetic arm plugs into the patient’s electrode implant to create natural-feeling sensations.
Credit: Russell Lee

Prosthetic limbs help amputees with mobility and functionality, but do not allow one to regain their sense of touch. Scientists and engineers have been attempting to re-create touch for those who have lost limbs for some time now, and they may have found the answer.

A study published in Science Translation Medicine states that long-lasting, natural-feeling sensations are now able to be produced artificially for those with prosthetic limbs. Of course, those using the device cannot physically feel the ball. Although, the patterns of electric singles that are sent by a computer into nerves around the patient’s arm will tell him or her differently.

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