HomeTech NewsRevolutionary Surgery: Miniature Robots That Navigate Blood Vessels

Revolutionary Surgery: Miniature Robots That Navigate Blood Vessels

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A team of researchers in South Korea has successfully demonstrated an innovative concept in the field of vascular surgery: a mini robot capable of entering blood vessels and performing surgical interventions. This breakthrough could change the way vascular surgeries are performed and improve precision in the treatment of occlusive diseases.

I-RAMAN: The Magnetic Robot that Transforms Vascular Surgery

The mini robot, dubbed I-RAMAN (Robot-Assisted Magnetic Navigation System for Endovascular Interventions), was able to autonomously navigate to an artery in a pig, deliver contrast, and return to an extraction point. The I-RAMAN system uses an untethered robot guided by an external magnetic field.

Creation of 3D Maps for Autonomous Navigation

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To use the robot, the researchers first create a 3D map of the patient’s blood vessels near the blocked area using 2D X-ray images from different angles. Then, the robot is injected into a blood vessel near the treatment area using a catheter, and the magnetic field guides the robot to the treatment point based on the 3D map.

Functions of the Robot in Surgery

The robot can perform various tasks, such as inflating balloons, suctioning blood clots, and administering contrast or medication locally. Once the task is complete, the external magnetic system guides the robot back to the catheter for removal. The team successfully tested the technique on artificial blood vessels and the superficial femoral arteries of small pigs.

InterMag: The Company that will Commercialize the I-RAMAN System

The researchers have plans to improve the microrobot and the magnetic navigation system, increase the magnetic field and reduce the size of the robot. To carry out these objectives, they have established a biotechnology company called InterMag. In addition, they intend to apply for clinical trials of the magnetic robot system to the Korean Ministry of Food and Drug Safety.

Potential Benefits of Miniature Robot-Assisted Surgery

The use of miniature robots in vascular surgeries could offer a series of benefits compared to conventional methods:

  1. Greater precision: By enabling autonomous navigation based on a 3D map, robots can reach treatment areas with greater precision than surgeons using X-rays.
  2. Reduced Radiation Exposure: By relying less on X-ray images, medical teams could reduce their exposure to ionizing radiation.
  3. Less invasive surgeries: Miniature robots could allow for less invasive interventions and potentially reduce the risks associated with surgery.

The Future of Miniature Robot-Assisted Surgery

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The success of the tests carried out by the team of researchers in South Korea has opened the door to the development and refinement of surgery assisted by miniature robots. As technology advances, improvements in the efficiency and safety of these interventions are expected.

Applications in Various Medical Specialties

Miniature robots have the potential to be used in a wide range of medical specialties, including cardiology, neurology, and angiology. This could revolutionize the way various medical conditions are treated, such as stroke, heart attack, and peripheral artery disease.

Improvement in the Training of Medical Professionals

The use of miniature robots in vascular surgeries could also improve the training of doctors and surgeons. With the help of these devices, professionals could receive more effective and specialized training, resulting in higher quality healthcare for patients.

Challenges and Ethical Considerations

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Despite the potential benefits, miniature robot-assisted surgery also poses challenges and ethical considerations. For example, it will be necessary to ensure that the devices are safe and effective in a wide variety of patients and clinical situations. In addition, it will be essential to address concerns about the privacy and confidentiality of medical data, as well as liability in case of errors or complications.


Miniature robot-assisted surgery, as demonstrated by the team of researchers in South Korea with their I-RAMAN system, has the potential to transform the field of vascular surgery. As technology continues to advance, we are likely to see increased adoption of these devices in various medical specialties. However, it will be critical to address the challenges and ethical considerations associated with their use to ensure that patients receive the safest and most effective healthcare possible.

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