Automated Catheter Navigation With Electromagnetic Image Guidance

Area of Science:

• Medical Devices
• Robotics in Medicine
• Minimally Invasive Surgery

Background:

• Catheter control is manual, limiting precision in complex procedures.
• Current methods often restrict movement to a single plane.
• Enhanced manipulation is crucial for advanced endoscopic interventions.

Purpose of the Study:

• To develop and evaluate an automated catheter tensioning system.
• To improve catheter tip manipulation and navigation accuracy.
• To integrate real-time tracking and image guidance for endoscopic procedures.

Main Methods:

• Developed a closed-loop automated system for a custom bronchial catheter.
• Utilized an electromechanical drive train with four pull wires for steering.
• Integrated electromagnetic tracking for real-time catheter tip localization.
• Employed 3D Slicer for image guidance and a joystick for control.
• Incorporated force sensing load cells to monitor applied tension.

Main Results:

• Demonstrated successful navigation to predefined targets in a lung model and animal study.
• Achieved average targeting times of 29 seconds (lung model) and 10 seconds (animal study).
• Validated the system's capability for remote-controlled bronchial catheter operation.

Conclusions:

• The automated system significantly enhances catheter manipulation capabilities.
• This novel remote-controlled bronchial catheter with electromagnetic tracking is the first reported of its kind.
• The technology holds significant potential for advancing future endoscopic and catheter-based procedures.