Humanoid robots successfully complete surgery for the first time

Signals Inbox·July 9, 2026·Humanoid Robotics

Humanoid robots have now helped remove gallbladders from living pigs, not just practiced on models or cadavers. The robots were controlled by surgeons, so this was not autonomous surgery. Still, the experiment matters because a small, general-purpose robot entered a normal operating room and used regular laparoscopic tools instead of relying on a huge purpose-built surgical system.

Q1What actually happened?

A team from UC San Diego used humanoid robots to complete two laparoscopic gallbladder removals on living pigs. In one operation, a robot worked with a human assistant. In the other, two robots worked side by side. Surgeons controlled every movement remotely. The study was published in Nature on July 8, 2026.

Q2Did the robots perform surgery by themselves?

No. Calling this autonomous robot surgery would be misleading. Human surgeons sat at control stations and moved the robots in real time. The robots were basically remote bodies with arms and hands. They did the physical work, but humans still made the decisions and controlled the instruments.

Q3Why is this considered a world first?

Humanoid robots had already handled medical tools, completed laboratory exercises and assisted with a procedure on a human cadaver. What had not been shown before was a humanoid completing real abdominal surgery on a living large animal. Moving from plastic models and dead tissue to a breathing animal introduces bleeding, organ movement and much less room for mistakes.

Q4But surgical robots already exist, right?

Yes, and systems such as Intuitive Surgical’s da Vinci have been used on patients for decades. The new part is not that a robot can do surgery. It is that a general-purpose humanoid can stand beside the operating table, hold normal handheld instruments and work inside a room built for humans. That is a very different hardware model.

Q5Why use a humanoid instead of a da Vinci?

A da Vinci is extremely precise, but it is a large specialized machine built mainly for surgery. UC San Diego says conventional systems can weigh around 1,800 pounds and may require dedicated space and setup teams. Its Surgie humanoids are about five feet tall and weigh roughly 60 pounds. In theory, one mobile robot could assist with surgery, carry equipment and perform other hospital tasks.

Q6Was this suddenly achieved from nothing?

No. The same UC San Diego lab introduced its LapSurgie system in 2025 and tested humanoid-controlled laparoscopy in laboratory exercises. In early 2026, Johns Hopkins researchers also showed a Unitree G1 holding an endoscope during surgery on a cadaver. The new study is the next jump: from controlled demonstrations to two full procedures in living animals.

Q7Did the humanoids perform as well as existing surgical robots?

Not yet. The researchers said the robots could achieve comparable precision in some controlled tasks, but the live operations took much longer than surgery using established systems. The humanoids also had to be recalibrated several times. So the real breakthrough is feasibility, not speed, reliability or clinical readiness.