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Tiny Robots for Remote Surgery

October 27th, 2005 Medgadget Editors Space Medicine, Surgery, Telemedicine

Mini-robots created at UNMCMini-robots created by researchers at the University of Nebraska Medical Center might one day perform surgery in space by doctors located on the ground:

Each camera-carrying robot — the width of a lipstick case — would illuminate the patient’s abdomen, beam back video images and carry different tools to help surgeons stop internal bleeding by clamping, clotting or cauterizing wounds.
Sound far-fetched? Not for physicians and engineers at the University of Nebraska Medical Center and University of Nebraska-Lincoln, who already are turning the sci-fi idea into reality with a handful of miniature prototypes.
“We want to be the Microsoft leader in this technology and be the state that changes the way surgery is done,” said Shane Farritor, Ph.D., associate professor in the Department of Mechanical Engineering in UNL’s College of Engineering and Technology.
“This work has the potential to completely change the minimally invasive surgery landscape,” said Dmitry Oleynikov, M.D., director of education and training for the minimally invasive and computer-assisted surgery initiative. “This is just the start of things to come regarding robotic devices at work inside the body during surgery.”
It’s a stark contrast to existing laparoscopic techniques, which allow surgeons to perform operations through small incisions. The benefits of laparoscopy are limited to less complex procedures, however, because of losses in imaging and dexterity compared to conventional surgery.
“These remotely controlled in vivo robots provide the surgeon with an enhanced field of view from arbitrary angles, as well as provide dexterous manipulators not constrained by small incisions in the abdominal wall,” Dr. Oleynikov said.
In fact, the view is better than the naked eye, he said, because the in-color pictures from the roaming robots are magnified 10x.
On the battlefield, these tiny soldiers can be inserted into wounds and allow remote surgeons to determine how critical the injury is and what immediate steps can be taken to ensure survival.
The UNMC and UNL team also plans to soon test a final prototype of a mobile biopsy robot designed to take samples of tissue. In addition, the design team is making modified robots that can be inserted into the stomach cavity through the esophagus.
The 3-inch long, aluminum-cased robots contain gears, motors, lenses, camera chips and electrical boards. “Three inches seems to be our limit at the moment because of the electrical components we use,” said designer Mark Rentschler, a Ph.D. candidate in biomedical engineering at UNL. “If we were to make 1,000 robots we would be able to afford customized electrical components that would reduce the size of the robot by half.”
The design team said initially the mini-robots will be single-use devices, although they eventually may be able to be sterilized for multiple use.
The group intends to create a local, spin-off company and then seek FDA approval of the devices, which would be applicable for any laparoscopic or minimally invasive surgery – from gall bladder to hernia repair.
“We’re the first in the world to come up with this technology,” Dr. Oleynikov said. “Everybody knows this is a Nebraska effort.”

The press release…
Additional at the Washington Post…

Medgadget Editors

Medical technologies transform the world! Join us and see the progress in real time. At Medgadget, we report the latest technology news, interview leaders in the field, and file dispatches from medical events around the world since 2004.

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