Electromagnetic Navigation Systems Revolutionize Minimally Invasive Surgery

Strategic Insights -

Researchers at the Swiss Federal Institute of Technology have made a groundbreaking discovery in the field of robotics and automation, introducing a method to simultaneously actuate and localize a tethered magnetic device using a single electromagnetic navigation system. This pioneering work has the potential to revolutionize minimally invasive surgical procedures, allowing for more precise and efficient treatments.

The researchers, led by Denis von Arx, have developed a system that utilizes a series of electromagnets to drive the navigation system. The method is demonstrated using a human-scale system composed of three electromagnets to actuate and localize a magnetic catheter prototype with pickup coils embedded at its tip. The system achieves six-degree-of-freedom localization, allowing for precise tracking of the device's movement. According to the research, the pose is estimated at a rate of 77 Hz, with a typical mean accuracy below 2 mm in position and 2 degrees in orientation.

Key Takeaways:

  • The researchers have developed a method to simultaneously actuate and localize a tethered magnetic device using a single electromagnetic navigation system.
  • The system utilizes a series of electromagnets to drive the navigation system, allowing for six-degree-of-freedom localization.
  • The method is demonstrated using a human-scale system composed of three electromagnets to actuate and localize a magnetic catheter prototype with pickup coils embedded at its tip.
  • The system achieves precise tracking of the device's movement, allowing for minimally invasive surgical procedures.
  • The pose is estimated at a rate of 77 Hz, with a typical mean accuracy below 2 mm in position and 2 degrees in orientation.
  • The research was supported by the Swiss National Science Foundation (SNSF) and ITC-InnoHK.
  • The study has been peer-reviewed and published in IEEE Robotics and Automation Letters.
  • Additional authors for the research include Bradley J. Nelson and Quentin Boehler.

Statistics:

  • The researchers estimate the pose of the device at a rate of 77 Hz.
  • The system achieves a typical mean accuracy below 2 mm in position and 2 degrees in orientation.
  • The research was supported by the Swiss National Science Foundation (SNSF) and ITC-InnoHK.
  • The study was published in IEEE Robotics and Automation Letters, 2025;10(6):6424-6431.
  • The researchers demonstrated the method using a human-scale system composed of three electromagnets.
  • The system achieved six-degree-of-freedom localization.

Sources:

  • "Orthogonal Pulse-width-modulation for Combined Electromagnetic Actuation and Localization. IEEE Robotics and Automation Letters, 2025;10(6):6424-6431."
  • Swiss Federal Institute of Technology, Multiscale Robot Lab, Ch-8092 Zurich, Switzerland.
  • Denis von Arx, Swiss Federal Institute of Technology, Multiscale Robot Lab, Ch-8092 Zurich, Switzerland.
  • Bradley J. Nelson and Quentin Boehler, co-authors of the research.
  • Swiss National Science Foundation (SNSF) and ITC-InnoHK, financial supporters of the research.