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Related Experiment Videos

Development of steerable instruments for minimal invasive surgery in modular conception

M O Schurr1, A Melzer, P Dautzenberg

  • 1Department of General Surgery, Eberhard-Karls University, Tübingen, Germany.

Acta Chirurgica Belgica
|May 1, 1993
PubMed
Summary

New steerable flexible instruments improve complex surgical manipulations in minimally invasive surgery. These advanced tools offer enhanced degrees of freedom (DOF) for delicate procedures like laparoscopic-transanal sigmoidectomy.

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Area of Science:

  • Surgical Technology
  • Minimally Invasive Surgery
  • Medical Engineering

Background:

  • Minimally invasive surgery (MIS) demands advanced instrumentation for complex procedures.
  • Current endoscopic instruments have limited steerability due to rigid shafts and low degrees of freedom (DOF).
  • Difficult manipulations like mobilization, skeletonization, ligatures, and sutures are challenging with existing tools.

Purpose of the Study:

  • To develop and evaluate novel steerable flexible instruments for MIS.
  • To overcome the limitations of restricted steerability in current endo-surgical instruments.
  • To enhance the ability to perform complex surgical maneuvers during extended endoscopic procedures.

Main Methods:

  • Development of prototypes with multi-jointed flexible tips offering enhanced articulation.

Related Experiment Videos

  • Incorporation of an instrument "elbow" for inclination up to +/- 280 degrees.
  • Addition of a second degree of freedom for surgical tool rotation.

    • Main Results:

    • Experimental testing in laparoscopic and thoracoscopic procedures demonstrated significant improvements.
    • Enhanced steerability and maneuverability were observed during complex surgical tasks.
    • The new instruments facilitate difficult manipulations previously challenging with rigid tools.

    Conclusions:

    • Steerable flexible instruments represent a significant advancement for MIS.
    • These prototypes enhance the capability to perform intricate surgical maneuvers.
    • Further development in a modular design with electric drives is underway.