Humanoid robots have surgically removed the gallbladders from living animals in an unprecedented medical experiment—but not as autonomous machines capable of replacing human doctors. Instead, skilled human surgeons remotely controlled the robots’ movements in a new example of human-robot teamups.

The teleoperated humanoid robots completed two minimally invasive surgeries by removing gallbladders from live pigs during a preclinical trial that was published in the journal Nature. If this approach eventually proves clinically ready for human patients, surgeons could use such humanoid robots to remotely perform robotic-assisted surgical care in smaller hospitals and clinics that lack the resources to install specialized but expensive surgical robots.

“It's a fraction of the cost and it takes a fraction of the space in an operating room,” said Shanglei Liu, an assistant professor of surgery at the University of California San Diego School of Medicine, in an interview with UC San Diego Today. “So it’s easy to deploy, anywhere from rural areas, to the battlefield, and even to space.”

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