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Related Experiment Videos

Laparoscopic multifunctional instruments: design and testing of initial prototypes.

Mary I Frecker1, Jeremy Schadler, Randy S Haluck

  • 1Department of Mechanical and Nuclear Engineering, College of Engineering, Penn State University, University Park, Pennsylvania 16802, USA. mxf36@psu.edu

JSLS : Journal of the Society of Laparoendoscopic Surgeons
|March 29, 2005
PubMed
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New multifunctional surgical instruments offer improved dexterity for minimally invasive surgery. While promising, further refinement is needed to match the performance of current single-function tools.

Area of Science:

  • Surgical Robotics
  • Medical Device Engineering
  • Minimally Invasive Surgery

Background:

  • Advancements in minimally invasive surgery necessitate novel instrument end-effectors for smaller, more flexible instruments.
  • There is a need for multifunctional instruments capable of performing multiple tasks with a single jaw set.
  • Enhanced dexterity is a key requirement for next-generation surgical instruments.

Purpose of the Study:

  • To design and evaluate novel multifunctional laparoscopic surgical instruments.
  • To explore the feasibility of integrating multiple functions into a single surgical tool.
  • To assess the dexterity and performance of prototype multifunctional instruments.

Main Methods:

  • Development of three distinct prototypes: mechanical scissors-grasper, mechanical scissors-grasper-articulator, and compliant mechanism scissors-grasper.

Related Experiment Videos

  • Baseline analysis and detailed design considerations for each prototype.
  • Subjective evaluations of interim prototypes to assess performance and dexterity.

    • Main Results:

    • Prototypes demonstrated promising initial results in concept validation.
    • Subjective evaluations indicated that individual functions did not outperform current disposable single-function instruments.
    • Early prototypes show potential but require further development.

    Conclusions:

    • The fundamental concept of multifunctionality and enhanced dexterity in surgical end-effectors is achievable.
    • Further research and development are essential to refine and simplify these instruments.
    • The goal is to improve multifunctional instruments to a level suitable for clinical surgical application.