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Updated: Sep 19, 2025

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Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging
Published on: April 4, 2013
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The Magnetic Flexible Endoscope: Phase 1 First-in-Human Clinical Trial.
Keith L Obstein1,2, Claire A Landewee1,2, James Martin3
1Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
The American Journal of Gastroenterology
|June 10, 2025
Summary
A novel magnetic flexible endoscope (MFE) was safely used in unsedated patients for colonoscopy. This first-in-human trial demonstrated the MFE
Area of Science:
- Medical Devices
- Robotics
- Gastroenterology
Background:
- Magnetic actuation offers a promising approach for endoscopic procedures.
- A novel magnetic flexible endoscope (MFE) was developed for colonoscopy, integrating magnetic sensing, robotic control, and image processing.
- A Phase 1 clinical trial was initiated to evaluate the MFE's safety and tolerability.
Purpose of the Study:
- To assess the safety and tolerability of the novel magnetic flexible endoscope (MFE) in a first-in-human clinical trial.
- To evaluate participant experience and system usability during MFE colonoscopy.
Main Methods:
- The MFE system includes an internal magnet, camera, illumination, and instrument channels, maneuvered by an external robotic arm.
- Five patients undergoing screening colonoscopy were enrolled.
- The MFE was inserted and advanced through the colon while patients were unsedated, following standard colonoscopy.
Main Results:
- All patients tolerated the MFE colonoscopy well without discomfort, pain, or adverse events.
- The MFE successfully traversed the colon in all participants.
- The system demonstrated robust performance without software or functional failures.
Conclusions:
- The magnetic flexible endoscope (MFE) is safe and well-tolerated for unsedated colonoscopy in humans.
- This study marks the first in vivo demonstration of the MFE platform's safety and efficacy.
- The MFE shows potential as a novel tool for colonoscopic examinations.

