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A noncontact laser-guided system for endoscopic computer-assisted sinus surgery.

Martin Khan1, Barotsz Kosmecki, Andreas Reutter

  • 1Department of Oto-Rhino-Laryngology, Charité-Universitätsmedizin Berlin, Berlin, Germany. martin.khan@charite.de

Surgical Innovation
|November 15, 2011
PubMed
Summary

Laser triangulation enhances navigation in endonasal sinus surgery by providing real-time distance data. This system improves accuracy and reduces instrument changes during procedures.

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Area of Science:

  • Otolaryngology
  • Medical Engineering
  • Surgical Navigation

Background:

  • Endonasal sinus surgery often requires frequent instrument changes due to limited space.
  • Current navigation systems using tracked instruments or pointers have accuracy limitations and offer no intraoperative guidance during tissue removal.

Purpose of the Study:

  • To integrate laser triangulation into an endoscopic navigation system for endonasal sinus surgery.
  • To evaluate the accuracy and reliability of this laser-assisted distance-measuring system.

Main Methods:

  • Laser triangulation was incorporated into an endoscope for navigation.
  • System accuracy was assessed between 0 and 20 mm, comparing the laser endoscope with a standard pointer.
  • Registration methods included bone screws and surface matching.

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Main Results:

  • The laser system demonstrated high accuracy (0.12 mm ± 0.12 mm) and reliability (0.2 mm).
  • The laser endoscope system achieved an accuracy of 0.59 mm ± 0.16 mm (bone screws) and 0.64 mm ± 0.22 mm (surface matching).
  • The laser endoscope proved more accurate than the standard pointer when using bone screw registration.

Conclusions:

  • Laser triangulation can be successfully integrated into endoscopic navigation for endonasal sinus surgery.
  • This technology offers improved accuracy and navigation information, potentially overcoming limitations of current systems.