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World premiere of muscle and nerve controlled arm prosthesis
For the first time an operation has been conducted, at Sahlgrenska University Hospital, where electrodes have been permanently implanted in nerves and muscles of an amputee to directly control an arm prosthesis. The result allows natural control of an advanced robotic prosthesis, similarly to the motions of a natural limb.
A surgical team led by Dr Rickard Brånemark, Sahlgrenska University Hospital, has carried out the first operation of its kind, where neuromuscular electrodes have been permanently implanted in an amputee. The operation was possible thanks to new advanced technology developed by Max Ortiz Catalan, supervised by Rickard Brånemark at Sahlgrenska University Hospital and Bo Håkansson at Chalmers University of Technology.
“The new technology is a major breakthrough that has many advantages over current technology, which provides very limited functionality to patients with missing limbs,” says Rickard Brånemark.
Big challenges There have been two major issues on the advancement of robotic prostheses: 1) how to firmly attach an artificial limb to the human body; 2) how to intuitively and efficiently control the prosthesis in order to be truly useful and regain lost functionality.
“This technology solves both these problems by combining a bone anchored prosthesis with implanted electrodes,” said Rickard Brånemark, who along with his team has developed a pioneering implant system called Opra, Osseointegrated Prostheses for the Rehabilitation of Amputees.
A titanium screw, so-called osseointegrated implant, is used to anchor the prosthesis directly to the stump, which provides many advantages over a traditionally used socket prosthesis.
“It allows complete degree of motion for the patient, fewer skin related problems and a more natural feeling that the prosthesis is part of the body. Overall, it brings better quality of life to people who are amputees,” says Rickard Brånemark.
How it works Presently, robotic prostheses rely on electrodes over the skin to pick up the muscles electrical activity to drive few actions by the prosthesis. The problem with this approach is that normally only two functions are regained out of the tens of different movements an able-body is capable of. By using implanted electrodes, more signals can be retrieved, and therefore control of more movements is possible. Furthermore, it is also possible to provide the patient with natural perception, or “feeling”, through neural stimulation.
“We believe that implanted electrodes, together with a long-term stable human-machine interface provided by the osseointegrated implant, is a breakthrough that will pave the way for a new era in limb replacement,” says Rickard Brånemark.
The patient The first patient has recently been treated with this technology, and the first tests gave excellent results. The patient, a previous user of a robotic hand, reported major difficulties in operating that device in cold and hot environments and interference from shoulder muscles. These issues have now disappeared, thanks to the new system, and the patient has now reported that almost no effort is required to generate control signals. Moreover, tests have shown that more movements may be performed in a coordinated way, and that several movements can be performed simultaneously.
“The next step will be to test electrical stimulation of nerves to see if the patient can sense environmental stimuli, that is, get an artificial sensation. The ultimate goal is to make a more natural way to replace a lost limb, to improve the quality of life for people with amputations,” says Rickard Brånemark.
Your first personal jetpack could actually go on sale next year
Dad made his son a hand with a 3D printer for $10 instead of paying tens of thousands for a prosthetic.
3D printing with stem cells could lead to printable organs
A potentially breakthrough 3D-printing process using human stem cells could be the precursor to printing organs from a patient’s own cells.
Some day in the future, when you need a kidney transplant, you may get a 3D-printed organ created just for you. If scientists are able to achieve that milestone, they may look back fondly at a breakthrough printing process pioneered by researchers at Heriot-Watt University in Scotland in collaboration with Roslin Cellab, a stem cell technology company.
The printer creates 3D spheroids using delicate embryonic cell cultures floating in a “bio ink” medium. They end up looking like little bubbles. Each droplet can contain as few as five stem cells. Basically, this comes down to the printer “ink” being stem cells rather than plastic or another material.
Dr. Will Shu is part of the research team working on the project. “In the longer term, we envisage the technology being further developed to create viable 3D organs for medical implantation from a patient’s own cells, eliminating the need for organ donation, immune suppression, and the problem of transplant rejection,” Shu said in a release from Heriot-Watt.
Perhaps most importantly, the stem cells survived the printing process and remained viable. Shu says this is the first time human embryonic stem cells have been 3D printed. Printing out organs may be far down the line, but it’s just one potential application. The method could also be used to print out human tissue for drug testing.
The research results have just been published in Biofabrication under the title “Development of a valve-based cell printer for the formation of human embryonic stem cell spheroid aggregates.”
While things like 3D-printed Mobius bacon strips and crazy pointy shoes are a lot of fun, it’s applications like this that could really turn 3D printing into a world changer.
source
Printing The Human Body
The rise of 3D printing has introduced one of the most ground-breaking technological feats happening right now. The most exciting part, through, doesn’t have anything to do with printing cars and fancy furniture, but in producing human tissue, otherwise known as bioprinting. While it’s still early days, the future of bioprinting looks bright and will eventually result in some major advantages for society, whilst also saving billions for the economy that is spent on research and development.
via science-junkie
Google Translate can now read signs for you in real time, which is just completely insane
The Random Darknet Shopper, an automated online shopping bot with a budget of $100 a week in Bitcoin, is programmed to do a very specific task: go to one particular marketplace on the Deep Web and make one random purchase a week with the provided allowance. The purchases have all been compiled for an art show in Zurich, Switzerland titled The Darknet: From Memes to Onionland, which runs through January 11.
The concept would be all gravy if not for one thing: the programmers came home one day to find a shipment of 10 ecstasy pills, followed by an apparently very legit falsified Hungarian passport– developments which have left some observers of the bot’s blog a little uneasy.
If this bot was shipping to the U.S., asks Forbes contributor and University of Washington law professor contributor Ryan Calo, who would be legally responsible for purchasing the goodies? The coders? Or the bot itself?
ROBOTS ARE STARTING TO BREAK THE LAW AND NOBODY KNOWS WHAT TO DO ABOUT IT - Fusion
a while back, ghostbong bought a very cheap, very used Roomba from craigslist. ”so, you’re going to ‘hack’ this, right?” said the man at the parking lot rendezvous. but we just wanted a vacuum. since then, the addition of the word “robot” to our casual, every-day lexicon is continually jarring, as if even living in the future will give you future-shock.
doing maintenance on the robot. the robot is stuck on a cord. the robot ate a sock. the robot ran out of power before it got back to its charging station. the robot knocked something over. it doesn’t help that the Roomba programmers saw fit to outfit the little thing with a series of Artoo-like MIDI scales and honks, to convey the mood of its message: docking successfully produces a tiny fanfare, and getting its brushes jammed on a foreign object makes it cry out in sad distress. do i verbally reassure the robot when i pull a wad of cat hair and bread bag tabs out of its works and set it back down on the floor? you bet i do.
but the larger point is that it is now possible no for me to say (or type) out loud and without irony, sarcasm, or any kind of fictitiousness: “the robot knocked over the kitten’s water dish >:I “
the future is here, and it is me on my knees on the floor yanking hairballs out of a domestic droid while it softly boops at me
New 3-D Printer Uses Light to Build Objects in Minutes
The next generation of desktop 3-D printers might do away with the excruciatingly slow process that current units use. Researchers have unveiled a printer that replaces the current extruder nozzle that squeezes out melted plastic one layer at a time with light and oxygen.
The makers of the Carbon3D printer have demonstrated a technique they call continuous liquid interface production (CLIP), which grows 3-D printed parts out of a liquid resin bath. Ultraviolet light and oxygen work to build a stronger part in layers just tens of microns wide. Build times can be reduced from hours to minutes, they say.
Their work builds on the process called stereolithography, an additive manufacturing technique developed in the 1980s that builds parts layer by layer with liquid resin cured by light.
“By rethinking the whole approach to 3-D printing, and the chemistry and physics behind the process, we have developed a new technology that can create parts radically faster than traditional technologies by essentially ‘growing’ them in a pool of liquid,” said University of North Carolina, Chapel Hill chemistry professor Joseph DeSimone, who coinvented the technique and is also Carbon3D’s CEO. See more images and learn more below.
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I kept taking about The Martian on my other blog, but I'm too excited to keep it on just one of them. If you like science and fun stories, read The Martian by Andy Weir; you will not regret it.
When they saw me in my space suit and the parachute dragging alongside as I walked, they started to back away in fear. I told them, don’t be afraid, I am a Soviet citizen like you, who has descended from space. And I must find a telephone to call Moscow.
Yuri Gagarin,
the first human to travel to space; upon re-entry Gagarin landed 280 kilometers away from the intended landing site, to the surprise of a farmer and his daughter who watched him fall from the sky (via whats-out-there)
HELLO FELLOW CITIZENS I AM A CITIZEN JUST LIKE YOU DEFINITELY NOT AN ALIEN NOW TAKE ME TO YOUR LEADERS
(via currentboat)
3D-printed prosthetic costs way less than other alternatives
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