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Design and Analysis of a Cable Actuated Hand Prosthesis

[+] Author Affiliations
Jingzhou Yang, Karim Abdel-Malek

University of Iowa, Iowa City, IA

Esteban Peña Pitarch

Technical University of Catalonia (UPC), Manresa, Spain

Paper No. DETC2004-57108, pp. 273-280; 8 pages
doi:10.1115/DETC2004-57108
From:
  • ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 2: 28th Biennial Mechanisms and Robotics Conference, Parts A and B
  • Salt Lake City, Utah, USA, September 28–October 2, 2004
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-4695-4 | eISBN: 0-7918-3742-4
  • Copyright © 2004 by ASME

abstract

Design and analysis of a cable actuated hand prosthesis is presented. The hand has multi-actuated fingers, four with two joints, and the thumb with three joints. Each joint is designed using a novel flexible mechanism based on the loading of a compression spring in both transverse and axial directions and using cable-conduit systems. The rotational motion is transformed to tendon-like behavior, which enables the location of the actuators to be far from the arm (e.g., on a belt around the waist). It is shown that the solution of the transverse deflection of each finger segment is obtained in a general form through a Haringx model followed by an element stiffness model. Also, we use a FEM model (ANSYS) to visualize the deflection of one finger. A prototypic finger is experimentally tested, results are verified, and the hand prosthesis is built.

Copyright © 2004 by ASME
Topics: Cables , Design , Prostheses

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