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Polymer Prosthetic Hand with Finger Copies for Persons with Congenital Defects or After Amputation Using 3D Printing

Anna Włodarczyk-Fligier1, Magdalena Polok-Rubiniec1, Aneta Kania1

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Summary

This study demonstrates a low-cost, 3D-printed prosthetic hand with a digit replicator for finger amputation patients. The design utilizes accessible components and Arduino control for enhanced functionality and patient accessibility.

Keywords:
3D printingArduinoPLAbiomaterialsprosthetic hand

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Area of Science:

  • Biomedical Engineering
  • Rehabilitation Technology
  • 3D Printing Applications

Background:

  • Limb amputations present significant challenges for individuals, impacting daily activities and quality of life.
  • Traditional prosthetics can be expensive and inaccessible, necessitating innovative and affordable solutions.
  • Advancements in 3D printing offer new possibilities for customized and cost-effective prosthetic devices.

Purpose of the Study:

  • To design and manufacture a functional prosthetic hand with a digit replicator for a patient with partial finger amputation.
  • To develop an electronic control system for the prosthetic digits using Arduino.
  • To explore the feasibility of using 3D printing with Polylactic Acid (PLA) for creating safe and accessible prosthetic devices.

Main Methods:

  • A 3D scan of the patient's hand and forearm was performed using an EinScan PRO HD scanner.
  • Prosthetic design and modeling were conducted using CAD software (Autodesk Inventor, Autodesk Meshmixer).
  • Electronic control systems were simulated and developed using Arduino language and Autodesk TinkerCad.

Main Results:

  • A custom-fit prosthetic hand with a digit replicator was successfully designed and 3D printed using PLA filament.
  • The electronic control system using Arduino was verified for safe and functional operation of the prosthetic digits.
  • Polylactic Acid (PLA) was identified as an optimal, skin-safe material for 3D printing the prosthesis.

Conclusions:

  • 3D printing technology enables the creation of affordable, customized prosthetic hands for individuals with limb differences.
  • The developed prosthetic hand design, utilizing readily available components and Arduino control, offers a viable solution for improving patient accessibility.
  • This research highlights the potential of integrating 3D printing and accessible electronics in prosthetic development to enhance patient outcomes and quality of life.