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Development of a lightweight and adaptable multiple-axis hand prosthesis.

C M Light1, P H Chappell

  • 1Electronics and Computer Science, University of Southampton, Southampton, SO17 1BJ, UK.

Medical Engineering & Physics
|May 4, 2001
PubMed
Summary

The Southampton-Remedi hand prosthesis offers improved function with six axes of movement, enhancing grip stability and reducing user effort. This advanced prosthetic addresses limitations of current devices, aiming for better user satisfaction.

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Area of Science:

  • Biomedical Engineering
  • Robotics
  • Prosthetics Design

Background:

  • Current upper limb prostheses, particularly myoelectric hands, have limited functionality due to single-degree-of-freedom designs.
  • High grip forces are required for stable prehension in commercial devices, demanding significant user effort and leading to dissatisfaction.
  • Existing artificial hands are often heavy and lack diverse grasping patterns and adequate sensory feedback.

Purpose of the Study:

  • To outline the development of the six-axis Southampton-Remedi hand prosthesis.
  • To address the functional limitations and user dissatisfaction associated with current prosthetic hands.
  • To improve prehension stability while minimizing required grip force.

Main Methods:

  • Development of a novel six-axis robotic hand prosthesis.

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  • Incorporation of modularity, anthropomorphism, and low weight design principles.
  • Focus on reducing power consumption for enhanced usability.

    • Main Results:

    • The Southampton-Remedi hand achieves stable prehension with significantly reduced grip force.
    • The six-axis design offers increased dexterity and improved grasping capabilities compared to single-degree-of-freedom devices.
    • Adherence to design constraints resulted in a lighter and more power-efficient prosthetic.

    Conclusions:

    • The six-axis Southampton-Remedi hand represents a significant advancement in upper limb prosthetics.
    • This design overcomes key limitations of existing devices, offering enhanced function and user experience.
    • Further development aims to increase grasping patterns and improve sensory feedback for prosthetic users.