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Intra-operative surgical instrument usage detection on a multi-sensor table.

Bernhard Glaser1, Stefan Dänzer, Thomas Neumuth

  • 1Innovation Center Computer Assisted Surgery, University of Leipzig, Semmelweisstr. 14, 04103 , Leipzig, Germany, bernhard.glaser@medizin.uni-leipzig.de.

International Journal of Computer Assisted Radiology and Surgery
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Summary

An automated operating room (OR) table system accurately tracks surgical instruments in real time using combined video and weight sensors. This technology enhances OR status assessment and patient safety by detecting instruments without modification.

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Area of Science:

  • Surgical technology
  • Medical instrumentation
  • Real-time monitoring systems

Background:

  • Real-time tracking of surgical instruments is crucial for assessing operating room (OR) status.
  • Current methods often require instrument modification or lack comprehensive tracking capabilities.
  • Automated systems can improve OR efficiency and patient safety.

Purpose of the Study:

  • To develop an automated system for real-time detection and classification of surgical instruments.
  • To assess the feasibility of using a sensor-based operating room table for instrument tracking.
  • To evaluate the system's performance without modifying surgical instruments.

Main Methods:

  • A multi-sensor operating room table was designed with integrated 2D cameras, a digital scale, and an infrared camera.
  • Software was developed to process sensor data for detecting and recording instrument usage.
  • The system's detection rates were evaluated during 27 functional endoscopic sinus surgeries (FESS) under laboratory conditions.

Main Results:

  • Video-based detection alone achieved an 84.9% detection rate.
  • The combined approach using both video and weight-based information yielded a 90.3% detection rate.
  • The system demonstrated reasonable accuracy satisfying clinical FESS requirements.

Conclusions:

  • A multi-sensor table-based system enables intra-operative tracking of unmodified surgical instruments.
  • This technology provides a foundation for real-time OR activity monitoring.
  • Potential applications include improved patient safety, such as preventing retained surgical items.