Dean says that fatalities are down because of battlefield tech and triage methods. But that many soldiers are coming back missing limbs. He wanted to make an arm to replace their missing ones. He wants it sensitive enough to pick up a grape or allow soldiers to use a razor to shave, but be self-contained in terms of power. And a two- year deadline.

He say that a year later, they built an 8.9-pound arm using titanium, custom motors, and so on. There's 18 degrees of freedom, and they're now seeing a demo of a man who is scratching his nose. Dean says he did this in one year.

The control techniques are revolutionary. He's playing a video of a guy who didn't have both his arms for 18 years, and learned how to use the arms effectively in less than two dozen hours of training. He's showing a video that shows a guy who knows how to punch, pass a Ping Pong ball to his friend and pour a drink for another man who is holding a cup with the same type of arm. Then the video shows Chuck, the man with no arms, for the first time in 13 years, feeding himself cereal.

Holy shit, now he's showing a video of a guy using the arm using only his MIND. He learned this technique in two days, but Dean says it was more like the system learned how to interface with the human.

Looking at what he's doing, the guy drinks and people applaud. It's been two days. But the amazing thing is that he's put the cup down so it's become a lower brain stem function in two hours of doing cup functions.

Attaching the arm directly to nerves required a lot of surgery.

But there are limited arm functions, even if it's very complicated. Learning how to control a back hoe, with four controls, takes years. And the arm has 18 degrees of freedom. But people don't learn how by using each degree. In fact, it's more efficient, Dean says. There are three degrees of freedom, so they did macros. With this, a man learned how to pick up bottles, nails and other items.

Attaching the arm was a challenge, day to day. Nine pounds on an arm is heavy over a few minutes, let alone a day. So they knew that no one would wear them because of that. So Dean designed air bladders that shift the weight on the body when passive (like fidgeting in a chair) and inflate to be hard when the servos in the arm detect load.

When they did a demo for the secretary of the Army, they showed a man picking up 12 grapes and eating them without breaking or dropping any.

You can literally use infrared light, reading signals going through the skull without any invasive insertion. That's what we're working on next as a controller.

Dean is taking five minutes to explain the plight of the modern world and the responsibility of the smart, rich people in the world to help change that. I'm not sure I have the words to express his thoughts, so I'll wait for the official D video and embed it here later.

Vid from All Things D:

[All Things D]

We followed and saw all the robotics companies eagerly waiting in line for photos while Kamen was just trying to make his way across the floor. He was pleasant and polite, making time for all the fanboys.

In this newly available video—shot just this week—the man himself explains his motivations behind the device before showing a brief demonstration. It's still a tease...but this one has better lighting and we just can't get enough.– Mark Wilson

A Closer Look at Dean Kamen's Robotic Arm [boingboing]

DARPA already has their first prototype done, and they say they're on track to "provide, by 2009, a mechanical arm that closely mimics the properties and sensory perception of a biological limb." It sounds pretty great, and I can't say having Dean Kamen and DARPA both working hard to create top-notch bionic arms is a bad thing. Click through to read DARPA's whole press release and a picture of the arm in action.

An international team led by the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Md., has developed a prototype of the first fully integrated prosthetic arm that can be controlled naturally, provide sensory feedback and allows for eight degrees of freedom—a level of control far beyond the current state of the art for prosthetic limbs. Proto 1, developed for the Defense Advanced Research Projects Agency (DARPA) Revolutionizing Prosthetics Program, is a complete limb system that also includes a virtual environment used for patient training, clinical configuration, and to record limb movements and control signals during clinical investigations.

The DARPA prosthetics program is an ambitious effort to provide the most advanced medical and rehabilitative technologies for military personnel injured in the line of duty. Over the last year, the APL-led Revolutionizing Prosthetics 2009 (RP 2009) team has worked to develop a prosthetic arm that will restore significant function and sensory perception of the natural limb. Proto 1 and its virtual environment system were delivered to DARPA ahead of schedule, and Proto 1 was fitted for clinical evaluations conducted by team partners at the Rehabilitation Institute of Chicago (RIC) in January and February.

"This progress represents the first major step in a very challenging program that spans four years and involves more than 30 partners, including government agencies, universities, and private firms from the United States, Europe, and Canada," says APL's Stuart Harshbarger, who leads the program. "The development of this first prototype within the first year of this program is a remarkable accomplishment by a highly talented and motivated team and serves as validation that we will be able to implement DARPA's vision to provide, by 2009, a mechanical arm that closely mimics the properties and sensory perception of a biological limb."

APL, which was responsible for much of the design and fabrication of Proto 1, and other team members are already hard at work on a second prototype, expected to be unveiled in late summer. It will have more than 25 degrees of freedom and the strength and speed of movement approaching the capabilities of the human limb, combined with more than 80 individual sensory elements for feedback of touch, temperature, and limb position.

"There is still significant work to be done to determine how best to control this number of degrees of freedom, and ultimately how to incorporate sensory feedback based on these sensory inputs within the human nervous system," Harshbarger says. "The APL team is already driving a virtual model of Proto 2 with data recorded during the clinical evaluation of Proto 1, and the team is working to identify a robust set of grasps that can be controlled by a second patient later this year."

Another exciting development is the functional demonstration of Injectable MyoElectric Sensor (IMES) devices—very small injectable or surgically implantable devices used to measure muscle activity at the source verses surface electrodes on the skin that were used during testing of the first prototype.

John Hopkins University [via Medgadget]

The above video might not be as impressive seeming as Dean Kamen's bionic arm, seeing as that was actually attached to a person and not sitting on a desk, but that video is all blurry and stuff. At least these guys are putting it all out there for us to judge. –Adam Frucci

Japan News Network [via Pink Tentacle]

Here's what I recall about it. He was approached by Darpa to develop the worlds best prosthetic arm. Our men and women wounded in Iraq and Afghanistan deserve it. We owe it to them.

The General from Darpa gave Kamen basically this blue sky order: I want an arm that's so precise that a person could pick up a grape or a raisin and without looking be able to tell the difference.

At first Dean begged off. It was too hard, it was too resource intensive, DEKA had a lot of other projects on the table. But Dean said he'd go to military hospitals and meet with the people. He met with combat wounded and was so inspired by them and their courage in meeting the challenges of life missing one or two arms that he decided they'd give it the best shot they could.

And so began DEKA's attempt to make the worlds best prosthetic limb, and do it with a very short timetable, to get it to the people who would need it.

Next Dean talked about control for this arm. He talked about brain implants and how bad an idea that was, going inside someone's skull. But then he talked about stem-cell research, and making a small implant that wouldn't be in the brain, but somewhere else in the body, maybe in the shoulder. Something that would be self-contained and communicate with the arm wirelessly. He named a research team at a big university, I forget which one. They were working on the stem-cell part of it. But, he cautioned, it may not work. The stem-cell research might not work, or it might not work in time to put it in this arm. But clearly this was the key to two-way neural contact. Control AND feeling.

So if that didn't work, or not in time, they had a number of other control schemes that they were looking at, and they were all better than the current standard.

At this point, Dean described what current motorized limbs were like. They strapped against a shoulder, and if they moved at all, they're controlled by kind of jamming the opposing shoulder which pulls the strapped limb so that a button gets pressed on it. If they're motorized they have a kind of a hook, or in some cases a cosmetic hand.

These hands are kind of one-size or a couple sizes and a couple of skin colors fit all.

So the first thing on Dean's list was that these would be the best looking prosthetic arms ever. Number one, these arms would match the person. And this would be achieved by taking a cyberscan of the other arm and making an exact mirror image. With nails, skin tone, size, bone size, everything matching. If the person didn't have another arm, a match would be found.

The next thing to tackle would be movement. From the looks of the video, this is coming along nicely. I wonder what the control scheme actually is on this video. I don't know. But I do know that they're shooting the moon.

And I don't think there was a dry eye while he was describing this to us. It was like watching the impossible become real.

Thanks for the update, tipster. – Jason Chen

What most are assuming is that there is some sort of neurological interface, but I'm doubting that's the case. We do know that it was developed for military amputees and that people were literally crying in the audience during its premier. If you have more info on the device, do us a favor and share it in the comments. Until then, I'm assuming that this video is of the new Terminator that must be destroyed at all costs.– Mark Wilson

First Cyborg Arm [digg]
TED: Dean Kamen's Cyborg Arm [boing boing]