The very first arm exoskeleton for kids with SMA I’ve discovered was Angel Arms. Designed by two biomedical engineering students Joseph Kissing and Brooks Schaefer at Grand Valley State University in Grand Rapids, Michigan was simple and beautiful piece of engineering. Its minimalist design use rubber bends to compensate hand weight thus allows less force to move. SMA – Spinal Muscular Atrophy is a neuromuscular disorder characterized by loss of motor neurons and progressive muscle wasting. Kids with SMA have very weak muscles and often couldn’t move their arms themselves. Thanks to initiatives like Angel Arms they can finally play, draw and throw a ball, but it’s still emerging field. There are medical companies that produce similar devices but they need a lot of measurements and custom fitting and can’t be ordered remotely because proper setup in their case is crucial and simply they doesn’t work if they’re misaligned. Moreover they need to be replaced multiple ti...