When Zac Vawter drop off his right-hand branch in a motorbike accident , he thought he ’d never walk properly again . Now , he ’s managed to use a bionic limb , hardwired into his aflutter system , to climb 103 flight of stair in the annual SkyRise Chicago skyscraper climbing contest .
Vawter’sprosthetic leg is deserving $ 8 million , weighs 10 British pound and apply two motor to power the knee and mortise joint separately . Amazingly , the limb uses point muscle reinnervation ( TMR ) to connect nerves sever during Vawter ’s accident to feasible sinew . In fact , nervus that would usually control his lower leg are rerouted to his hamstring : when he cerebrate about moving his lower leg , electric nervous impulse are fired to that muscle , and they ’re then converted into control signal in the bionic limb .
The event ? He can climb 103 floors of freakin ’ stair , in a meter most of us would be gallant of . He finished the mounting in just 53 hour 9 seconds , report AP , and looked pretty relaxed throughout .
While Vawter is heading back to his hometown of Yelm , Wash. , the limb will remain in Chicago . The researchers behind it , from the Rehabilitation Institute of Chicago , Vanderbilt University and MIT amongst others , still are n’t well-chosen with it . They go for to meliorate its execution yet further — but say that it will still be years before the tree branch hits grocery store .
Regardless , it ’s curse impressive that a limb can respond to a man ’s thoughts — and then power him up 103 flight of stair . Well done , Zac . [ AP ]
prototype by AP
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