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A parallel robot to assist vitreoretinal surgery.

Taiga Nakano1, Naohiko Sugita, Takashi Ueta

  • 1School of Engineering, The University of Tokyo, Hongo Bunkyo-ku, Tokyo, Japan. nakano@nml.t.u-tokyo.ac.jp

International Journal of Computer Assisted Radiology and Surgery
|December 25, 2009
PubMed
Summary

This study developed a novel parallel robot prototype to overcome hand tremor limitations in vitreoretinal surgery, enhancing surgical precision and stability for improved patient outcomes.

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Area of Science:

  • Robotics in Medicine
  • Microsurgery Technology
  • Ophthalmology Surgical Tools

Background:

  • Physiological hand tremor in surgeons significantly limits precision during delicate vitreoretinal surgery.
  • Existing manual surgical techniques are susceptible to inaccuracies caused by involuntary hand movements.
  • The need for enhanced stability and accuracy in ophthalmic microsurgery is critical for optimal patient outcomes.

Purpose of the Study:

  • To develop and evaluate a novel parallel robot prototype designed for vitreoretinal surgery.
  • To address the performance limitations imposed by physiological hand tremor in microsurgical procedures.
  • To enhance the precision and stability of surgical tool positioning within the eye.

Main Methods:

  • A six-degree-of-freedom parallel robotic manipulator was designed, focusing on size, precision, and sterilization requirements.

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  • The robot provides micrometer-level positioning accuracy for surgical instruments inside the eye.
  • Operator control is facilitated through a multi-jointed 'master manipulator'.

    • Main Results:

    • In vitro experiments demonstrated significantly improved stability and accuracy of tool positioning compared to manual procedures.
    • The prototype robot successfully mitigated the effects of hand tremor during simulated surgical tasks.
    • Quantitative analysis confirmed the micrometer-level precision achievable with the robotic system.

    Conclusions:

    • The developed microsurgical robotic system offers superior operability compared to traditional manual methods.
    • The prototype exhibits substantial potential for clinical application in vitreoretinal surgery.
    • This robotic approach promises to enhance surgical safety and efficacy in ophthalmic procedures.