miércoles, 5 de febrero de 2014

Bionic hand allows amputee to feel again

By Ben Hirschler


LONDON (Reuters) - Dennis Aabo Sorensen lost his left hand when a firework rocket he was holding exploded during New Year's Eve celebrations 10 years ago, and he never expected to feel anything with the stump again.

But for a while last year he regained his sense of touch after being attached to a "feeling" bionic hand that allowed him to grasp and identify objects even when blindfolded.

The prototype device, which was wired to nerves in the 36-year-old Dane's left arm, blurs the boundary between body and machine and scientists hope it could one day revolutionize the lives of many amputees.

There is still work to be done in miniaturizing components and tidying away trailing cables that mean the robotic hand has so far only been used in the lab, but Sorensen said the European research team behind the project had got the basics right.

IMPLANTED ELECTRODES


Ultra-thin electrodes the width of a human hair were surgically implanted into the ulnar and median nerves of Sorensen's arm before he was attached to the robotic hand, which is equipped with various artificial sensors.

http://www.reuters.com/article/idUSBREA141UF20140205

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