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Magnetically actuatable 3D-printed endoscopic microsystems.

Florian Rothermel1,2, Andrea Toulouse3,4, Simon Thiele5

  • 1Institute of Applied Optics (ITO), University of Stuttgart, Stuttgart, Germany. rothermel@ito.uni-stuttgart.de.

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|April 9, 2025
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Summary
This summary is machine-generated.

Researchers developed compact, 3D-printed, magnetically actuatable endoscopic microsystems. These miniaturized devices enhance imaging capabilities for minimally invasive procedures, significantly advancing endoscopic technology.

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Area of Science:

  • Medical Devices
  • Microsystems Engineering
  • Optical Engineering

Background:

  • Endoscopic procedures require compact imaging systems for narrow spaces and reduced damage risk.
  • Existing actuatable endoscopes face miniaturization limits, often exceeding 1mm in diameter.
  • Integrating actuatable imaging systems with fiber bundles enhances endoscope functionality.

Purpose of the Study:

  • To develop highly compact, magnetically actuatable microsystems for endoscopic applications.
  • To demonstrate the integration of these microsystems with fiber bundles for enhanced imaging.
  • To achieve system diameters significantly below conventional limits.

Main Methods:

  • Utilizing two-photon polymerization for 3D-printing microsystems on fiber bundle end-facets.
  • Integrating electromagnetic microcoils with embedded polymer-magnets for actuation.
  • Achieving axial, lateral, and rotatory displacement of microoptical elements.

Main Results:

  • Demonstrated highly compact, magnetically actuatable endoscopic microsystems.
  • Achieved overall system diameters well below 900µm.
  • Enabled zooming, resolution enhancement, and increased field of view through microoptical element displacement.

Conclusions:

  • Presented a novel approach for fabricating miniaturized, functional endoscopic microsystems.
  • Successfully integrated magnetic actuation for enhanced optical control within endoscopes.
  • This advancement holds potential for minimally invasive surgery and intravascular imaging.