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Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
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Effects of visual force feedback on robot-assisted surgical task performance.

Carol E Reiley1, Takintope Akinbiyi, Darius Burschka

  • 1Engineering Research Center and Computer Integrated Surgery Systems and Technology, Johns Hopkins University, Baltimore, MD, USA.

The Journal of Thoracic and Cardiovascular Surgery
|January 9, 2008
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Summary

Visual force feedback in robotic surgery benefits novice surgeons by reducing suture breakage and applied forces, but offers no advantage for experienced surgeons. Knot quality and completion times remained unaffected for all skill levels.

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Area of Science:

  • Robotics in Surgery
  • Surgical Skill Acquisition
  • Haptic Feedback Research

Background:

  • Direct haptic feedback is minimal in current surgical robotic systems.
  • The utility of haptic feedback in robot-assisted surgery is debated.
  • This study explores visual force feedback as a surrogate for haptic feedback.

Purpose of the Study:

  • To investigate the impact of visual force feedback on surgical knot tying using fine sutures.
  • To assess if visual force feedback improves performance in robot-assisted surgery.

Main Methods:

  • A modified da Vinci robotic system with force-sensing tips and visual force feedback was used.
  • 10 surgeons performed knot tying with and without visual force feedback.
  • Performance metrics included suture breakage, knot security, applied forces, and completion times.

Main Results:

  • Novice robotic surgeons showed reduced suture breakage and lower applied forces with visual force feedback.
  • Experienced robotic surgeons demonstrated no significant performance differences with or without visual force feedback.
  • Knot completion times and knot security were not affected by visual force feedback for either group.

Conclusions:

  • Visual force feedback aids novice robotic surgeons by improving force control and reducing errors.
  • The benefits of visual force feedback diminish with increasing surgeon experience.
  • Visual force feedback shows potential for enhancing training and performance in early-stage robotic surgery.