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Hand-tool-tissue interaction forces in neurosurgery for haptic rendering.

Marco Aggravi1, Elena De Momi2, Francesco DiMeco3

  • 1Department of Information Engineering and Mathematics, University of Siena, Via Roma 56, 53100, Siena, Italy. aggravi@dii.unisi.it.

Medical & Biological Engineering & Computing
|January 1, 2016
PubMed
Summary
This summary is machine-generated.

Haptic feedback in robotic neurosurgery can rely solely on skin sensation (cutaneous feedback). This study confirms interaction forces are detectable by finger pads, enabling stable and transparent teleoperation systems.

Keywords:
Brain phantom forcesContact forcesHaptic renderingNeurosurgery

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Area of Science:

  • Robotics
  • Surgical Technology
  • Human-Computer Interaction

Background:

  • Haptics enhances tele-operated surgery by providing sensory feedback.
  • Sensory subtraction isolates cutaneous feedback, potentially improving system stability and transparency.
  • Investigating the feasibility of cutaneous-only haptic feedback in neurosurgery is crucial.

Purpose of the Study:

  • To determine if interaction forces in bench model neurosurgery are perceivable through the skin (cutaneous perception).
  • To assess the potential of using sensory subtraction for haptic feedback in robotic neurosurgery.

Main Methods:

  • Measured forces exerted by surgeons on tools using contact force sensors.
  • Measured forces between surgical tools and a brain phantom using a load cell.
  • Analyzed forces in the context of human finger pad cutaneous sensitivity.

Main Results:

  • Surgeon-tool contact forces ranged from 0.01-6.6 N.
  • Tool-tissue interaction forces were 6-11 times smaller (0.01-0.59 N).
  • Measured contact forces fall within the detectable range of human finger pad sensitivity.

Conclusions:

  • Haptic cues in robotic neurosurgery can be effectively conveyed solely through the surgeon's finger pads (cutaneous channel).
  • This approach supports high transparency and stability in tele-operation systems.
  • Sensory subtraction techniques are viable for providing haptic feedback in neurosurgery.