Latest in Tomorrow

Image credit: MIT

MIT’s thread-like robot can slip through blood vessels in your brain

We’re one step closer to remote, robotic brain surgery.
1129 Shares
Share
Tweet
Share
Save

Sponsored Links

MIT

MIT engineers created a thread-like robot that can glide through the brain's blood vessels and could deliver clot-reducing drugs to treat strokes or aneurysms. The robotic thread could offer an alternative to open brain surgery, and it could be controlled by surgeons outside of the operating room. Theoretically, surgeons could control it remotely from an entirely different location.

The team described the "magnetically steerable, hydrogel-coated robotic thread" in a paper published in Science Robotics. The core of the thread is made from nickel-titanium alloy, which is both bendy and springy. It's coated with a rubbery paste, or ink, which is embedded with magnetic particles. That's then covered with a hydrogel, which makes the wire smooth and friction-free, and the final product can be controlled using magnets.

Today, surgeons typically clear blood clots in the brain by inserting a thin wire through a person's main artery. The surgeons use a fluoroscope, which images the blood vessel using X-rays, to manually rotate and guide the wire into the damaged brain vessel. A catheter is then threaded along the wire to deliver drugs or other clot therapies. But the procedure is physically taxing on the surgeons, who are exposed to repeated radiation from the fluoroscope. And the wires carry the risk of damaging the vessel linings.

In contrast, this robotic thread is controlled by magnets, and surgeons could guide it from outside of the operating room. They'd be protected from repeated radiation exposure, and they might be able to perform procedures remotely using a joystick. Yes, remote robotic brain surgery using a joystick.

Thanks to the hydrogel, there's less risk of friction against the vessel linings, and the device could help surgeons reach even further into the brain. "One of the challenges in surgery has been to be able to navigate through complicated blood vessels in the brain, which has a very small diameter, where commercial catheters can't reach," said Kyujin Cho, professor of mechanical engineering at Seoul National University. "This research has shown potential to overcome this challenge and enable surgical procedures in the brain without open surgery."

The robotic thread isn't ready for clinical use, but the team demonstrated its agility by steering the thread through an obstacle course of small rings, similar to threading a needle. They also created a life-sized replica of the brain's major blood vessels and guided the robot through those winding, narrow paths. Eventually, they hope the robotic wire might deliver clot-reducing drugs or break up blockages with a laser.

All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.
Comment
Comments
Share
1129 Shares
Share
Tweet
Share
Save

Popular on Engadget

Apple's first CES appearance in 28 years is all about privacy

Apple's first CES appearance in 28 years is all about privacy

View
GOG's Galaxy 2.0 game launcher is available without an invitation

GOG's Galaxy 2.0 game launcher is available without an invitation

View
Domino's GPS-powered pizza tracking is available in many more places

Domino's GPS-powered pizza tracking is available in many more places

View
Jaguar's I-Pace software update boosts the range by 12 miles

Jaguar's I-Pace software update boosts the range by 12 miles

View
Amazon claims Trump's 'personal vendetta' cost it $10 billion Pentagon contract

Amazon claims Trump's 'personal vendetta' cost it $10 billion Pentagon contract

View

From around the web

Page 1Page 1ear iconeye iconFill 23text filevr