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Augmented reality haptic (ARH): an approach of electromagnetic tracking in minimally invasive surgery

  • J. B. Pagador
  • L. F. Sánchez
  • J. A. Sánchez
  • P. Bustos
  • J. Moreno
  • F. M. Sánchez-Margallo
Original Article

Abstract

Purpose

Minimally Invasive Surgery (MIS) is a widely used surgical technique that requires a long training process due to its difficulty and complexity. We developed an Augmented Reality Haptic (ARH) System based on electromagnetic tracking devices for use in creation training models (computer-enhanced trainers), in computer-assisted surgery or telemanipulation applications.

Method

The ARH system consists currently in a Linux driver and a calibration protocol to acquire the tooltip position of conventional laparoscopic tools in real time. A Polhemus Isotrack® II was used to track surgical endoscopic tooltip movements. The receiver was mounted on the tool handle in order to measure laparoscopic tools positions without complex modifications. Two validation tests were done to guarantee the proper functioning of the ARH system in a MIS environment. The first one checks the driver operation and the second measures the accuracy and reliability of the tooltip pose estimation process.

Results

Jitter and orientation errors for the first test were 2.00±0.10 and 2.00±0.09 mm, respectively. Relative position error of 0.25±0.06 cm for a distance of 5 cm was found. Jitter error for the second test was 127 ± 60, 117 ± 40 and 122 ± 39 mm in Z, Y and X rotations, respectively.

Conclusions

Results obtained with the ARH system are sufficiently accurate for use in MIS training. A supplementary correction procedure would be necessary to use this ARH system in computer-assisted surgery or telemanipulation.

Keywords

Electromagnetic device tracking Minimally invasive surgery Surgical assessment Computer-assisted surgery Surgical training 

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Copyright information

© CARS 2010

Authors and Affiliations

  • J. B. Pagador
    • 1
  • L. F. Sánchez
    • 1
  • J. A. Sánchez
    • 1
  • P. Bustos
    • 2
  • J. Moreno
    • 2
  • F. M. Sánchez-Margallo
    • 1
  1. 1.Jesús Usón Minimally Invasive Surgery CentreCáceresSpain
  2. 2.Laboratory of Robotics and Artificial VisionUniversity of ExtremaduraCáceresSpain

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