A multifunctional forceps-scissors instrument is designed for minimally invasive surgery. The device is a compliant mechanism capable of both grasping and cutting. The focus of the paper is on the design optimization and a detailed finite element analysis of the compliant mechanism. One-half of the symmetric compliant mechanism is modeled as a cantilever beam of rectangular cross-section undergoing large deformation. The optimization problem is solved graphically where all feasible designs (i.e., those that satisfy the stress and geometric constraints) are displayed on performance space plots. Using this method it is easy to visualize the performance space and to select a suitable design; however, it is found that it is not possible to simultaneously maximize free deflection and blocked force in the forceps or scissors modes. A detailed finite element analysis was conducted using ANSYS to model the multiple loading conditions. A prototype instrument, fabricated from stainless steel using wire EDM with the precision of +/- 2 μm, has been tested for comparison of actual and predicted results.
Skip Nav Destination
ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 10–13, 2006
Philadelphia, Pennsylvania, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4256-8
PROCEEDINGS PAPER
Design of a 1.0mm Multifunctional Forceps-Scissors Instrument for Minimally Invasive Surgery Available to Purchase
Milton E. Aguirre,
Milton E. Aguirre
Pennsylvania State University, University Park, PA
Search for other works by this author on:
Mary Frecker
Mary Frecker
Pennsylvania State University, University Park, PA
Search for other works by this author on:
Milton E. Aguirre
Pennsylvania State University, University Park, PA
Mary Frecker
Pennsylvania State University, University Park, PA
Paper No:
DETC2006-99446, pp. 557-563; 7 pages
Published Online:
June 3, 2008
Citation
Aguirre, ME, & Frecker, M. "Design of a 1.0mm Multifunctional Forceps-Scissors Instrument for Minimally Invasive Surgery." Proceedings of the ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 2: 30th Annual Mechanisms and Robotics Conference, Parts A and B. Philadelphia, Pennsylvania, USA. September 10–13, 2006. pp. 557-563. ASME. https://doi.org/10.1115/DETC2006-99446
Download citation file:
12
Views
Related Proceedings Papers
Related Articles
Design of a Multifunctional Compliant Instrument for Minimally Invasive Surgery
J Biomech Eng (November,2005)
Design Innovation Size and Shape Optimization of a 1.0 mm Multifunctional Forceps-Scissors Surgical Instrument
J. Med. Devices (March,2008)
Design of a Compliant Endoscopic Suturing Instrument
J. Med. Devices (June,2008)
Related Chapters
Introduction and Definitions
Handbook on Stiffness & Damping in Mechanical Design
Subsection NB—Class 1 Components
Companion Guide to the ASME Boiler & Pressure Vessel Codes, Volume 1 Sixth Edition
Understanding the Problem
Design and Application of the Worm Gear