Autonomous Surgical Robots Achieve 100% Accuracy in Gallbladder Removal

Researchers at Johns Hopkins University have made a significant leap in robotic healthcare. They created a system named SRT-H (Surgical Robot Transformer-Hierarchy) that performed gallbladder removals without human assistance. The robot completed eight surgeries on pig organs, achieving a perfect 100% accuracy rate.

This groundbreaking success may help push autonomous surgical robots toward real-world clinical use.

A robot trained to think like a surgeon

The robot was trained using video footage of real surgeries. These surgeries involved gallbladder and liver removal on cadaver pig organs. SRT-H watched human professionals perform the procedure and learned each step.

After the training phase, researchers tested the robot in real surgical simulations. It worked without any mechanical assistance. Instead, it followed only voice commands, acting like a junior surgeon under supervision.

In total, the robot completed 17 surgical tasks per operation. These included identifying bile ducts, isolating arteries, placing surgical clips, and cutting tissue with scissors. It did all of this independently, maintaining accuracy and efficiency across all procedures.

Smarter than traditional surgical robots

SRT-H wasn’t just blindly executing commands. It adapted to changes, corrected its own mistakes, and responded to unpredictable conditions. It moved slower than human surgeons but often found shorter, more efficient paths between tasks.

The robot also requested tools at the right moments, showing real-time decision-making. Its AI uses the same transformer model structure found in ChatGPT and Google Gemini, giving it the power to adjust to unexpected variables like tissue irregularities or unseen complications.

Conclusion

Lead researcher Axel Krieger said this marks a shift from robots performing individual tasks to systems that understand whole procedures. Co-author Ji Woong “Brian” Kim added that it removes core obstacles to clinical adoption.

Fewer than 1% of surgeries today involve robotic AI. However, with this achievement, autonomous surgical robots may soon become essential tools in operating rooms worldwide.