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Prosthetic Arms Come to the Rescue for Amputees

by Julia Samuel on December 24, 2014 at 4:10 PM
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Prosthetic Arms Come to the Rescue for Amputees

A double-amputee, with arms missing at shoulder level, received two prostheses. It is the world's first and he is able to control the arms with impulses with from his mind and manipulate different joints to control a total of 30 degrees of motion.

Prosthesis is a device designed to replace a missing part of the body or to make a part of the body to work better. Prosthetic devices commonly replace diseased or missing eyes, arms, hands, legs, or joints.

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in a similar case of fixing a prostheses, Ortiz Catalan, biomedical engineer at Chalmers University of Technology, Sweden said, "The idea of using the biological control system that is nerves and muscle to control a prosthetic device has been around for a long time."

Even if you lose a limb, he explains, the nerves are still there and could receive signals. But this is "the first successful implementation of neurocontrol using implanted electrodes", he said.
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The system installed at the Johns Hopkins University Applied Physics Laboratory relies on surgically connecting electrodes to existing nerves that used to lead to the different part of the arm and hand. These are then connected to a computer that interprets the signals into motion control commands for the prosthetic arms.

The amputee still requires to select which components of the arm he'd like to manipulate, but the motion thereafter is supposedly quite natural.

The prostheses are not for taking home quite yet, but are currently still in the development stage, yet we're clearly close to the age when losing an arm isn't such a harrowing diagnosis.

Source: Medindia
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