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Bionic leg climbs stairs with ease
As advanced as prosthetic feet and legs have become, they're frequently lousy with stairs. You usually have to reconfigure your limb to make the climb, even if it's just for a few seconds. That won't be an issue again if the Rehabilitation Institute of Chicago's efforts pay off, however. Its researchers have built a new bionic leg that lets you climb stairs, kneel and otherwise move freely without straining yourself. It revolves around a control system that tells what you're trying to do and adjusts automatically, letting you focus on walking instead of terrain changes. The leg is only in a very limited test run backed by the US Army, but it's expected to become a commercial product that helps amputees of all stripes. [Image credit: Ann Simon/Rehabilitation Institute of Chicago]
Honda starts testing Walking Assist device in large-scale US trials
Honda's Walking Assist is finally getting a large-scale test run in the US. The company has started clinical trials of the leg-boosting device at the Rehabilitation Institute of Chicago, where it will (hopefully) help stroke victims regain their mobility. While Honda hasn't said how long the study will last, it could have a significant impact if it proves successful. Up to 80 percent of US stroke survivors have trouble walking quickly or smoothly, and Walking Assist's combination of hip sensors and motors could get some patients back to a normal stride.
Researchers take one step closer to neural-controlled bionic legs for safer mobility
We've seen our fair share of prosthetic arms and computer interfaces operated with little more than the firing of a synapse, but legs? They're a different story: balancing and propelling a sack of (mostly) flesh and bone is a much more complicated task than simply picking up a sandwich. Thankfully, the Rehabilitation Institute of Chicago's Center for Bionic Medicine is now one step closer to thought-controlled lower-limb prosthetics. As pictured here, the researchers' early simulations showed that amputees could control a virtual knee and ankle with 91-percent accuracy, by way of pattern recognition software to interpret electrical signals delivered through nine different muscles in the thigh -- patients think about moving, thus lighting up the nerves in varying patterns to indicate different motions. The ultimate goal is to hook up bionic legs through the same way, which would offer a greater range of motion than existing prosthetics, making tasks like walking up and down stairs safer. Now all we need is a quadruple amputee willing to pick up a badge and slap on an eye-tracking microdisplay.
First woman gets bionic arm
As The Washington Post reports, 26-year old Claudia Mitchell has become the fourth person and first woman to get outfitted with a bionic arm (well, besides Lindsay Wagner), with which she's able to perform functions simply by thinking about them. The arm was designed by researchers at the Rehabilitation Institute of Chicago -- who are part of a larger project funded by DARPA -- and works by detecting the movement's of Mitchell's chest muscle, which has been rewired to the nerves that once served her left arm. Eventually, researchers say, the arm could even give Mitchell the sense of touch, with electrodes in the hand sending signals to her chest skin, which her brain would recognize as a sensation. This being part of a DARPA project though, we're sure they're also working on things they're not telling us, like crazy swinging grappling hook action.[Thanks, Spluch]
