Imagine a surgeon operating on a patient through tiny incisions while sitting at a console several feet away. Instead of directly holding surgical instruments, the surgeon controls a sophisticated system of cameras, software, and mechanical arms.

This is robotic-assisted surgery.

Despite the name, today’s robotic surgical systems generally do not operate independently. A trained surgeon controls the system throughout the procedure. The technology translates the surgeon’s hand movements into precise movements of instruments inside the patient’s body. (U.S. Food and Drug Administration)

So how does all of this actually work?

What Is Robotic Surgery?

Robotic surgery, more accurately called robotically assisted surgery (RAS), is a form of minimally invasive surgery in which a surgeon uses a computer-controlled system to manipulate surgical instruments.

The FDA describes RAS devices as a type of computer-assisted surgical system. They can help surgeons perform procedures through small incisions and can be particularly useful when operating in confined areas of the body. (U.S. Food and Drug Administration)

The important thing to understand is:

The surgeon is still performing the operation.

The robotic system doesn’t independently decide where to cut or stitch.

Instead:

Surgeon’s hands → Controls → Computer/software → Robotic arms → Surgical instruments

What Does a Robotic Surgery System Look Like?

A typical robotic-assisted system consists of several major components.

1. Surgeon Console

This is where the surgeon controls the system.

The console provides a view of the surgical area and contains controls that allow the surgeon to manipulate the instruments.

Some systems provide a magnified 3D view of the operating area. For example, Intuitive’s da Vinci system provides surgeons with a magnified 3D view while they control the camera and instruments from the console. (Intuitive)

2. Robotic Arms

Near the patient is a robotic or bedside cart containing several mechanical arms.

These arms hold different surgical instruments and the camera.

The FDA describes RAS systems as commonly having three or four hinged mechanical arms, although system designs vary. (U.S. Food and Drug Administration)

3. Camera

One arm can carry an endoscopic camera.

The camera enters the body through a small incision and sends video to the surgeon’s console.

Instead of looking directly into the patient’s body, the surgeon operates while watching the camera’s view.

4. Surgical Instruments

The remaining arms can hold specialized instruments such as:

• Forceps
• Graspers
• Scissors
• Dissection instruments
• Retractors
• Cautery tools
• Suturing instruments

Different instruments are selected depending on the procedure. (U.S. Food and Drug Administration)

How Does the Surgeon Control the Robot?

This is where the technology gets interesting.

The surgeon doesn’t simply move a joystick around randomly.

The console detects the surgeon’s movements and translates them into movements of the surgical instruments.

For example:

Surgeon moves hand → Control system detects movement → Software processes movement → Robotic arm moves → Instrument moves inside patient

This is called telemanipulation.

The mechanical arms can provide movements that are difficult to perform using conventional straight laparoscopic instruments.

Some robotic instruments are designed to articulate and rotate inside the body, providing additional dexterity in confined spaces. (Intuitive)

Why Use Robotic Arms Instead of Human Hands?

Human hands are incredibly capable, but there are physical limitations when performing minimally invasive surgery.

Traditional laparoscopic instruments are relatively long and rigid.

A surgeon may have to manipulate them from outside the patient’s body while the actual instrument is working inside.

Robotic systems can provide more articulated instrument movement.

This can be particularly useful when operating in anatomically difficult or confined areas. (U.S. Food and Drug Administration)

The Camera Is One of the Most Important Parts

A major advantage of robotic surgery is visualization.

The camera can provide a magnified view of the surgical area, allowing the surgeon to see structures through the small operating access points.

Some systems provide stereoscopic 3D visualization.

That means the surgeon can receive depth information rather than simply looking at a flat 2D image.

Better visualization can be particularly useful when working around small anatomical structures.

How Does the System Make Movements Precise?

The computer system sits between the surgeon and the mechanical instruments.

It can interpret the surgeon’s movements and control the robotic arms accordingly.

Depending on the system, the technology can also provide features such as motion scaling and tremor filtering.

Motion scaling

Imagine the surgeon moves their hand 3 centimeters.

The system can translate that into a smaller movement by the surgical instrument.

This can be useful when extremely small movements are required.

Tremor filtering

Human hands naturally make tiny involuntary movements.

Computer-assisted systems can be designed to filter certain movements before they are translated to the instruments.

The exact capabilities depend on the particular robotic system.

Can Robotic Surgery Feel What the Surgeon Is Touching?

This depends on the system.

Traditional robotic systems have historically provided limited or no direct tactile sensation compared with physically holding an instrument.

However, newer systems and technologies can incorporate force feedback or other forms of haptic information.

For example, the FDA’s description of the Senhance system includes force feedback designed to help surgeons sense the stiffness of tissue being grasped. (U.S. Food and Drug Administration)

This is an important area of development because surgeons traditionally rely heavily on both visual and physical cues.

What Happens During an Operation?

A simplified robotic surgery workflow looks something like this:

Step 1: Preparing the patient

The patient is prepared for surgery and positioned appropriately.

Step 2: Creating small access points

Depending on the procedure, surgeons make small incisions through which cameras and instruments can be introduced.

Step 3: Positioning the system

The robotic arms are positioned around the patient.

Step 4: Inserting the camera and instruments

The camera and surgical instruments are placed through the appropriate access points.

Step 5: Surgeon takes control

The surgeon sits at the console and views the surgical area.

Step 6: Instruments respond to the surgeon

The surgeon moves the controls, and the robotic arms reproduce those movements inside the patient’s body.

Step 7: Surgery is completed

Once the procedure is finished, the instruments are removed and the incisions are closed.

The exact workflow varies substantially depending on the operation and system being used.

What Types of Surgery Use Robotic Systems?

Robotic-assisted surgical systems have been cleared for use in a range of procedures, including areas such as:

• General surgery
• Urology
• Gynecology
• Cardiac surgery
• Colorectal surgery
• Thoracic surgery
• Head and neck surgery

Examples of procedures that may involve robotic systems include prostatectomy, hysterectomy and gallbladder removal. (U.S. Food and Drug Administration)

Not every robotic system is designed for every operation, however. Each device has specific intended uses and regulatory clearances.

Robotic Surgery vs Traditional Surgery

There are several different ways surgery can be performed.

It’s important not to interpret this table as meaning robotic surgery is automatically better.

The appropriate surgical approach depends on the procedure, patient, surgeon, available equipment and other clinical factors.

What Are the Advantages?

Robotic-assisted surgery can offer several technological advantages.

Smaller access points

Because many procedures are performed through minimally invasive approaches, patients may have smaller incisions than with some open procedures.

Greater instrument dexterity

Articulating instruments can make certain movements easier in confined anatomical spaces.

Magnified visualization

The camera can provide a detailed view of the operating area.

Surgeon ergonomics

The surgeon can operate from a dedicated console rather than standing over the patient throughout the procedure.

Computer-assisted control

Software and mechanical systems can translate surgeon movements into highly controlled instrument movements.

These advantages don’t necessarily translate into better outcomes for every operation.

What Are the Disadvantages?

Robotic surgery also has limitations.

💰 High cost

Robotic systems can require substantial investment in equipment, maintenance, instruments and training.

Recent evidence reviews have identified the incremental cost of robotic surgery as an important consideration. (PubMed Central (PMC))

⏱️ Operating time

Some procedures can take longer when performed robotically.

A 2024 overview of systematic reviews found that operative time was the outcome for which evidence was most consistently unfavorable to robotic approaches, although findings for other outcomes were generally positive or neutral. (PubMed Central (PMC))

🎓 Training

Surgeons need appropriate training and experience with the specific system.

The FDA specifically recommends that users receive appropriate training for the particular robotic system they operate. (U.S. Food and Drug Administration)

🔧 Technical problems

Like any sophisticated medical technology, robotic systems can experience equipment or software-related problems.

The FDA continues to monitor reports involving robotically assisted surgical devices, including reports concerning mechanical and image/display issues. (U.S. Food and Drug Administration)

Is Robotic Surgery Safer?

There isn’t one universal answer.

The outcome depends on the procedure, patient, surgeon, technology and comparison being made.

Research has found that robotic surgery can have advantages in certain situations, but studies don’t show that robotic surgery is automatically superior to conventional surgery for every procedure.

A recent overview of systematic reviews found generally positive or neutral evidence for many outcomes compared with open or laparoscopic surgery, while also noting that operative time and cost remain important issues. (PubMed Central (PMC))

Earlier systematic reviews also found mixed results and highlighted limitations in the quality of evidence. (PubMed Central (PMC))

So the technology should be viewed as a surgical tool, rather than a replacement for surgical expertise.

Is Robotic Surgery Fully Automated?

No.

This is one of the biggest misconceptions about robotic surgery.

Today’s commonly used robotically assisted surgical systems are designed to be controlled by surgeons.

The FDA explicitly states that RAS devices are not actually robots in the sense of independently performing surgery because they require direct human control. (U.S. Food and Drug Administration)

That distinction becomes particularly important as AI and robotics continue to develop.

A system that assists a surgeon is very different from a system that independently decides and performs an operation.

What Does the Future of Robotic Surgery Look Like?

The future will likely involve increasingly sophisticated combinations of:

• Robotics
• Computer vision
• Artificial intelligence
• Improved surgical instruments
• Haptic feedback
• Better imaging
• Surgical navigation
• Data analysis
• Automation

AI could potentially help systems recognize anatomical structures, provide information to surgeons or assist with specific surgical tasks.

However, increased automation also creates major technical, regulatory and safety challenges.

The goal isn’t simply to make robots more autonomous.

The bigger challenge is determining which parts of surgery can safely benefit from automation while keeping appropriate human oversight.

Final Thoughts

Robotic surgery is a great example of how technology and healthcare are merging.

The system combines mechanical arms, miniature surgical instruments, cameras, computer software and a surgeon-controlled interface to perform minimally invasive procedures.

The most important thing to remember is that the robot isn’t replacing the surgeon.

The surgeon provides the decisions and control. The robotic system provides the technology that translates those decisions into precise physical movements.

As robotics, AI and medical imaging continue developing, these systems could become even more capable—but their value will ultimately depend on whether those technological improvements translate into meaningful clinical benefits for patients.

FAQs

Is robotic surgery performed by a robot?

No. Current robotically assisted surgical systems are controlled directly by trained surgeons. (U.S. Food and Drug Administration)

Does robotic surgery mean the surgeon is outside the operating room?

Not necessarily. The surgeon typically operates from a console in the operating room while controlling the instruments at the patient’s bedside. (Intuitive)

Does robotic surgery use AI?

Some modern surgical technologies can incorporate computer-assisted functions, but robotic surgery itself does not mean that an AI system is independently performing the operation.

Are robotic surgery instruments reusable?

This depends on the specific system and instrument. Some instruments are designed for limited or single-patient use, while system components have different reuse and maintenance requirements.

Is robotic surgery always better than laparoscopic surgery?

No. Evidence varies by procedure and outcome. Robotic surgery can provide technological advantages in certain complex procedures, but it also involves factors such as cost and potentially longer operating times. (PubMed Central (PMC))