da Vinci Surgical System

The da Vinci Surgical System is the most widely used surgical robot in the world. It is made by Intuitive Surgical and received US regulatory clearance for general surgery around 2000.

It is not an autonomous surgeon

The robot does not operate by itself. A surgeon sits at a console a few metres from the patient and moves hand controls. The robot's thin arms copy those movements, but smaller and steadier. This is called teleoperation.

What the surgeon gains

• A magnified 3D view of the inside of the body
• Wrist-like instruments that bend and rotate more than a human hand can in small spaces
• Tremor filtering, so natural hand shake is not passed to the instrument
• Smaller cuts, which usually means less pain and faster recovery for the patient

What can go wrong

The system is expensive, the surgeon needs special training, and without the "feel" of touch the surgeon must rely on vision. Hospitals must weigh these costs against the benefits for each type of operation.

Why it matters for robotics

da Vinci proves a useful pattern: put the human in charge of decisions, and let the robot supply precision, strength and steadiness. Many future robots, from bomb disposal machines to factory helpers, follow this "human plus robot" model.