The idea behind most prosthetics is to ‘fill the gap’ of missing limbs – hands, arms, legs, feet. In many cases there is some kind of mechanical articulation. In a few cases there is connection to existing musculature. However research in bioengineering and the ability to do ever more sophisticated procedures involving nerves and muscles has opened the door to create prosthetics that not only connect to tissue but can also carry out nerve and muscle control. In this case, it’s called a SmartHand…

A new invention from Tel Aviv University researchers may change that. Prof. Yosi Shacham-Diamand of TAU’s Department of Engineering, working with a team of European Union scientists, has successfully wired a state-of-the-art artificial hand to existing nerve endings in the stump of a severed arm. The device, called “SmartHand,” resembles — in function, sensitivity and appearance — a real hand.

Robin af Ekenstam of Sweden, the project’s first human subject, has not only been able to complete extremely complicated tasks like eating and writing, he reports he is also able to “feel” his fingers once again.
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Prof. Shacham-Diamand’s contribution to the project, on which TAU collaborated with Sweden’s Lund University, is the interface between the body’s nerves and the device’s electronics. “Perfectly good nerve endings remain at the stem of a severed limb,” the researcher says. “Our team is building the interface between the device and the nerves in the arm, connecting cognitive neuroscience with state-of-the-art information technologies.”
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The SmartHand project was able to integrate recent advances in today’s “intelligent” prosthetic hands with all the basic features of a flesh-and-blood hand. Four electric motors and 40 sensors are activated when the SmartHand touches an object, not only replicating the movement of a human hand, but also providing the wearer with a sensation of feeling and touch.

[Source: Tel Aviv University]