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Related Concept Videos

Rolling Resistance: Problem Solving01:17

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Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...
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Flexible endoscope manipulating robot using quad-roller friction mechanism.

Subin Lee1, Hyeonwook Kim2, Jaehyeon Byeon1

  • 1Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Republic of Korea.

Computer Assisted Surgery (Abingdon, England)
|September 21, 2024
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This study introduces a compact robotic system for flexible endoscope control, enabling precise tip-based motion. An innovative unsynchronized strategy significantly reduces robotic movement near patients.

Keywords:
Flexible endoscopefriction mechanismmedical robots and systemsquad-roller system

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Area of Science:

  • Robotics
  • Medical Devices
  • Surgical Technology

Background:

  • Manual flexible endoscope operation presents accuracy and usability challenges.
  • Existing robotic systems for endoscopes are often large and complex.
  • Conventional control methods create slack, problematic for long endoscopes like colonoscopes.

Purpose of the Study:

  • To develop a compact robotic system for precise flexible endoscope manipulation.
  • To address limitations of existing robotic endoscope control systems.
  • To improve surgical accuracy and patient safety through enhanced endoscope control.

Main Methods:

  • A novel compact quad-roller friction mechanism for tip-based rotational and translational motion.
  • Implementation of two pairs of tilted rollers for motion control within a confined space.
  • An unsynchronized motion strategy between the endoscope handle and tip to manage slack.

Main Results:

  • The proposed system accurately achieves rotational and translational motions.
  • The unsynchronized control strategy effectively minimizes robotic motion near the patient.
  • Up to 88% reduction in total translational motion was observed compared to previous methods.

Conclusions:

  • The compact quad-roller system offers a viable solution for precise flexible endoscope control.
  • The unsynchronized motion strategy enhances safety and usability in endoscopic procedures.
  • This technology has the potential to improve outcomes in minimally invasive surgery.