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Proportionally controlled linear power assist device for artificial arms.

R E Prior, C M Scott

Bulletin of Prosthetics Research

|January 1, 1975

Summary

A new prosthetic add-on device offers economical power assistance for cable-operated prostheses. This innovation aims to significantly improve function for above-elbow prosthesis users with minimal retraining.

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Area of Science:

Biomedical Engineering
Rehabilitation Technology
Prosthetics and Orthotics

Background:

Conventional cable-operated prostheses often lack sufficient function for users unable to generate adequate cable excursion.
Existing solutions for power assistance may be costly or require extensive modifications and retraining.

Purpose of the Study:

To develop an economical prosthetic add-on device for power assist.
To enhance the functionality of existing cable-operated above-elbow prostheses.
To improve user performance and sensory feedback with minimal retraining.

Main Methods:

Development of a novel prosthetic add-on system requiring minor modifications by a prosthetist.
Integration of power assist capabilities into conventional body-powered prosthetic systems.
Evaluation of system performance, including operational speed and retained function without power assist.

Main Results:

The add-on device provides an economical means of power assistance for cable-operated prostheses.
Users of conventional above-elbow prostheses are expected to see dramatic performance improvements.
The system operates at speeds comparable to conventional prostheses and retains function without power assist.

Conclusions:

The developed prosthetic add-on offers a cost-effective solution for enhancing upper-limb prosthesis function.
This technology promises to significantly improve the quality of life for individuals with conventional cable-operated prostheses.
The system enhances sensory feedback and maintains functionality, even without active power assist.

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