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Mechanical Sciences An open-access journal for theoretical and applied mechanics
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Volume 5, issue 1
Mech. Sci., 5, 21–28, 2014
https://doi.org/10.5194/ms-5-21-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Mech. Sci., 5, 21–28, 2014
https://doi.org/10.5194/ms-5-21-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 23 May 2014

Research article | 23 May 2014

An articulated handle to improve the ergonomic performance of robotic dextrous instruments for laparoscopic surgery

B. Herman1,2, A. Devreker1,*, F. Richer3, A. Hassan Zahraee3, and J. Szewczyk3 B. Herman et al.
  • 1Université catholique de Louvain, Institute of Mechanics, Materials, and Civil Engineering, Center for Research in Energy and Mechatronics, Louvain-la-Neuve, Belgium
  • 2Université catholique de Louvain, Louvain Bionics, Louvain-la-Neuve, Belgium
  • 3Université Pierre et Marie Curie – CNRS, Institute for Intelligent Systems and Robotics, Paris, France
  • *now with: K. U. Leuven, Department of Mechanical Engineering, Division Production engineering, Machine design and Automation, Leuven, Belgium

Abstract. Hand-held robotic instruments with dextrous end-effectors offer increased accessibility and gesture precision in minimally invasive laparoscopic surgery. They combine advantages of both intuitive but large, complex, and expensive telesurgery systems, and much cheaper but less user-friendly steerable mechanical instruments. However, the ergonomics of such instruments still needs to be improved in order to decrease surgeon discomfort. Based on the results of former experimental studies, a handle connected to the instrument shaft through a lockable ball joint was designed. An experimental assessment of ergonomic and gesture performance was performed on a custom-made virtual reality simulator. Results show that this solution improves ergonomics, demanding less wrist flexion and deviation and elbow elevation, while providing gesture performance similar to a robotic dextrous instrument with standard pistol-like handle configuration.

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