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Functional evaluation of a non-assembly 3D-printed hand prosthesis.

Juan Sebastian Cuellar1, Gerwin Smit1, Paul Breedveld1

  • 1Department of Biomechanical Engineering, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Delft, The Netherlands.

Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
|October 11, 2019
PubMed
Summary

Researchers developed a novel, non-assembly 3D-printed prosthetic hand for developing countries. This accessible 3D-printed prosthesis offers comparable functionality to body-powered alternatives with lower activation forces.

Keywords:
3D printingbiomechanical testing/analysisbiomedical deviceslimb prostheticsmechanical design

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Technology
  • Additive Manufacturing

Background:

  • Limited access to prosthetic devices for amputees in developing countries.
  • Need for affordable and functional upper limb prostheses.

Purpose of the Study:

  • To design and evaluate a novel, non-assembly 3D-printed active hand prosthesis.
  • To assess the mechanical properties and functionality for potential use in developing nations.

Main Methods:

  • Design and fabrication of a non-assembly hand prosthesis using material extrusion 3D printing.
  • Mechanical evaluation of critical parts for resistance to actuation forces.
  • Assessment of mechanical performance, activation forces, and energy consumption during a closing cycle.

Main Results:

  • The 3D-printed prosthesis demonstrated mechanical resistance to typical user actuation forces.
  • Activation forces and energy requirements were lower compared to existing body-powered prostheses.
  • The non-assembly design achieved functional performance comparable to other body-powered options.

Conclusions:

  • The novel 3D-printed prosthetic hand is a viable and accessible option for individuals with limb defects in developing countries.
  • The non-assembly, 3D-printed design offers a cost-effective solution to improve prosthetic accessibility.