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A Smart Haptic Hand-Held Device for Neurosurgical Microdissection.

Christopher J Payne1, Hani J Marcus, Guang-Zhong Yang

  • 1The Hamlyn Centre for Robotic Surgery, Imperial College London, London, SW7 2AZ, UK, christopher.payne@imperial.ac.uk.

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Summary

This study introduces a smart microsurgical instrument providing vibrotactile feedback to alert surgeons about exceeding force thresholds. This compact, low-cost device enhances safety and precision in delicate microneurosurgery procedures.

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Area of Science:

  • Neurosurgery
  • Biomedical Engineering
  • Haptics

Background:

  • Microneurosurgery demands high dexterity and precise force control to prevent iatrogenic injury.
  • Current haptic feedback systems are often large, complex, and expensive.
  • A need exists for accessible, effective force-feedback solutions in microsurgery.

Purpose of the Study:

  • To develop and evaluate a smart, hand-held microsurgical instrument with vibrotactile force-threshold feedback.
  • To assess the usability and effectiveness of the device in simulated and cadaveric microsurgical tasks.

Main Methods:

  • Development of a compact, low-cost microsurgical instrument with integrated vibrotactile feedback.
  • Two psychophysical user studies to evaluate the force-threshold feedback system.
  • A cadaveric pilot study to assess performance in a microdissection task.

Main Results:

  • The proposed device effectively provides real-time vibrotactile feedback on force application.
  • User studies demonstrated the system's ability to indicate when force thresholds are exceeded.
  • The cadaveric study confirmed the device's utility in a relevant microsurgical context.

Conclusions:

  • The smart microsurgical instrument offers a compact, fail-safe, and cost-effective solution for haptic feedback.
  • The device enhances surgeon awareness of applied forces, potentially improving safety and outcomes in microneurosurgery.