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Related Concept Videos

Mechanical Systems01:22

Mechanical Systems

394
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
394

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Mechatronic Design of a Two-Arm Concentric Tube Robot System for Rigid Neuroendoscopy.

Margaret F Rox1, Dominick S Ropella1, Richard J Hendrick1

  • 1Department of Mechanical Engineering at Vanderbilt University, Nashville, TN 37235, USA.

IEEE/ASME Transactions on Mechatronics : a Joint Publication of the IEEE Industrial Electronics Society and the ASME Dynamic Systems and Control Division
|March 22, 2021
PubMed
Summary

This study introduces a novel concentric tube robot for neurosurgery, enhancing dexterity and reducing invasiveness. The robotic system minimizes endoscope tilting, improving safety and enabling single-surgeon procedures.

Keywords:
concentric tube robotcontinuum robotminimally-invasive surgeryneuroendoscopyrobot-assisted surgery

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Area of Science:

  • Neurosurgery
  • Robotics
  • Medical Devices

Background:

  • Minimally invasive neurosurgery often utilizes neuroendoscopic approaches.
  • Maneuvering instruments with current neuroendoscopes is challenging due to the need for endoscope tilting, which can cause brain tissue damage.
  • Concentric tube robots offer enhanced dexterity for navigating within the endoscope without tilting.

Purpose of the Study:

  • To present the mechatronic design of a novel concentric tube robot system for neuroendoscopy.
  • To evaluate the robotic system's performance in reducing endoscope tilting and enabling single-surgeon operation.
  • To compare the robotic approach against standard manual neuroendoscopy in a simulated surgical procedure.

Main Methods:

  • Development of a compact concentric tube robot with a differential drive, integrated motor control, and redundant position sensors.
  • Deployment of two concentric tube manipulators through a standard neuroendoscope.
  • Experimental validation using a colloid cyst removal simulation in a brain phantom, comparing manual and robotic approaches.

Main Results:

  • The robotic system significantly reduced endoscope tilt (1.16°) compared to the manual approach (17.09°).
  • The robotic system demonstrated the potential for a single surgeon to perform the procedure, unlike the typical two-surgeon manual approach.
  • The mechatronic design incorporated safety features like redundant sensors and embedded control electronics.

Conclusions:

  • The developed concentric tube robot system enhances dexterity and safety in neuroendoscopy by minimizing endoscope tilting.
  • This robotic approach facilitates single-surgeon procedures, potentially improving efficiency and accessibility in neurosurgery.
  • The experimental validation confirms the system's efficacy in a simulated neurosurgical task, offering a promising alternative to traditional methods.