It appears that we are near the beginning of a new modality in medicine – the use of computer controlled and powered robotics for therapeutic purposes. At present such technology is in its infancy, but is giving us a glimpse of what it will become.
Recently Vanderbilt University announced that its team at the Center for Intelligent Mechatronics has developed an exoskeleton that paraplegics can wear on their legs to allow them to sit, stand, and walk. This is essentially a mechanized orthotic that paraplegics can wear on their legs. The researchers describe it as a “Segway with legs” – referring to the computer technology that controls the exoskeleton, which responds to the user’s movement. If the user leans forward, then the legs will walk. If they lean back, then they will sit.
Like any technology, you can take either a glass half-full or half-empty view of this device. I will cover both – first the good.
Their system has some advantages over previous systems. It is about half the weight, coming in at 27 pounds while other lower extremity exoskeletons weigh 45 pounds. The exoskeleton is also small enough to fit in a standard wheelchair while being worn, and can be put on and taken off by the user alone. As described above, this system also incorporates intelligent control technology. Users with partial paralysis can have their own movements augmented, while for those with complete plegia the exoskeleton can do all the work.