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Ryan Barrows

on 15 April 2010

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Transcript of ReWalk

Paraplegia is the loss of some or all of

the neurological function of the lower body It is commonly caused by a spinal cord injury due to trauma, congenital condition or disease process Paraplegia might entail a simple reduction in the ability to move the lower limbs or may completely paralyze the motor functions of the legs and prevent sensory perception of any feeling below the affected vertebral level Most paraplegics are confined to a wheel chair, thus limiting accessibility to much of the world around them Though technological advancements have increased patient mobility and accessibility legislations have given better access to wheelchair bound individuals, improvements can still be made in the living standards for paraplegics Sedentary wheelchair users have high health care costs due to complications from the urinary, respiratory, cardiovascular and digestive systems as well as osteoporosis, pressure sores and other afflictions. Not to mention the added inconvenience and degredation of always being below eye level So when Amit Goffer, Israeli engineer and entrepreneur, became dependent on a wheelchair as a result of an ATV accident, he decided to go to work on finding a way to relieve some of the drawbacks of being wheelchair bound thus he came up with the ReWalk The ReWalk is a robotic exoskeleton, partially concealable under the user's clothes, that allow's the disabled person to stand, walk, ascend and descend stairs, and sit. In order to do this, the exoskeleton requires an input from the remote attached to the user's wrist. With the aid of crutches, the user leans forward, signaling the microsensors in the backpack to tell the motors in the leg members to perform the desired function Several questions still need to be considered when designing the suit past the initial prototype invention:
What will power the suit?
How will it know how high to step?
How much should it weigh?
What forces do the motors need to generate?
What are the user's weight limitations? The actual design of this device took place in SolidWorks, based on the model from inventor Amit Goffer. SolidWorks allowed the designers to constantly refine concepts to accommodate variables such as leg brace length, joint angle range, and the amount of pressure the joints can withstand. The ReWalk exoskeleton is currently undergoing clinical trials at MossRehab in Elkins Park, Pa. There are 14 patients in the trial, that they hope will go well enough to release the device for public use by the end of the year.
http://singularityhub.com/2010/04/01/exoskeleton-that-lets-paraplegics-walk-gets-new-attention-as-release-date-nears-video/#more-14421 ReWalk in Action Whats Next? The ReWalk is not the only concept for human controlled exoskeletons... There are currently several types of robot exoskeletons being developed, each with different functions and benefits ReWalk Restoring Mobility... Recovering Dignity Honda Assistive Walking Devices HAL-5 - Hybrid Assistive Limb http://www.cyberdyne.jp/english/robotsuithal/index.html Raytheon Sarcos Though as a quardaplegic, inventor Amit Goffer will never be able to use this device as it requires the use of upper limbs for crutch support
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