NASA's 'Armstrong' Soft Wearable Upper Extremity Garment
NASA has a new wearable technology that replaces, or strengthens, the human shoulder.
(NASA's 'Armstrong' Soft Wearable Upper Extremity Garment video)
Well, now NASA’s Wearable Robotics Laboratory, in collaboration with Rice University, has used the technologies developed for the exoskeleton and the Space Suit Roboglove to help with rehabilitation and augmentation of one of the most complex human joints … the shoulder. NASA’s Space Technology Mission Directorate supported the development of X1 and the Robo-glove through its Game Changing Development Program (GCD). GCD advances innovative technologies that have the potential to revolutionize future space missions as well as improve life on Earth.
The Soft Wearable Upper Extremity Garment, or “Armstrong,” is worn on the upper body and can activate the shoulder and elbow joints using a Bowden cable transmission system. This system uses actuators on the torso to pull on synthetic tendons that cross the shoulder and elbow joints to create the desired movements. Integrating this technology could provide a means to augment astronauts during planetary EVAs, easing difficult manual lifting and manipulation tasks.
Armstrong was developed for Warrior
Web, a DARPA program looking, in
part, to advance technologies to prevent,
reduce, and rehabilitate soldiers
with neuromusculoskeletal injuries.
DARPA’s aim is to help soldiers who
have had a Traumatic Brain Injury (TBI),
which often causes motor impairment
and limb weakness similar to a stroke.
“While developed initially to rehabilitate soldiers with TBI,
there is potential for application of Armstrong’s technology
in future spacesuits,” says Raul Blanco, Johnson’s
Space Suit and Crew Survival Systems Branch Chief. “By
enhancing human strength and reducing muscle fatigue,
this technology could enhance spacewalk activities and
change the paradigm of how extravehicular activity operations
are planned and executed. As enabling technologies
for batteries and actuation continue to improve, this type
of system could possess intriguing advantages over current
systems for some mission scenarios.”
“The potential of incorporating a similar ‘hybrid’ technology
in the spacesuit is very intriguing,” says Johnson’s
Christopher Beck, codeveloper of the technology. “It could
provide crew members with additional strength to accomplish
safer and more efficient spacewalks. It could also
help reduce injury and fatigue in the shoulder because of
overuse in the spacesuit.”
(Via NASA Game On Magazine [pdf, starts at page 30])
(NASA 'Armstrong' soft wearable shoulder exoskeleton)
I was immediately reminded of this passage from Babel-17, the amazing 1966 novel by Samuel R. Delany. In the story, he describes an operation in which the shoulder joint is removed and replaced with a transparent plastiplasm cage:
"We'll just block off all sensation from your shoulder on . . . there, that didn't really hurt. This? Oh, it's a local venial and arterial constrictant; we want to keep things clean. Now, we'll just cut you along the—well, if it upsets you, don't look. Talk to your friend there. It'll just take a few minutes. Oh, that must have tickled all down in your tummy! Never mind. Just once more. Fine. That's your shoulder joint. I know; your arm does look sort of funny hanging there without it. We'll just stick in this transparent platisplasm cage now. Exact same articulation as your shoulder joint, and it holds your muscles out of the way. See, it's got grooves for your arteries...."
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