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Related Experiment Video

Updated: Feb 9, 2026

Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
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The S-Finger: A Synergetic Externally Powered Digit With Tactile Sensing and Feedback.

I Imbinto, F Montagnani, M Bacchereti

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    |June 8, 2018
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    Summary
    This summary is machine-generated.

    Researchers developed a novel S-Finger powered prosthesis for partial hand amputation, offering improved dexterity. This compact, rugged device utilizes a unique mechanical transmission and sensory feedback for enhanced user function.

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    Area of Science:

    • Biomedical Engineering
    • Rehabilitation Technology
    • Prosthetics

    Background:

    • Partial hand amputation is a common limb difference globally.
    • Existing powered partial hand prostheses are limited in clinical availability and progression.
    • There is a need for advanced prosthetic solutions to improve function and quality of life.

    Purpose of the Study:

    • To introduce a novel mechanical architecture for a powered partial hand prosthesis.
    • To evaluate the performance and clinical viability of the developed S-Finger prosthesis.
    • To gather user feedback for future prosthetic design improvements.

    Main Methods:

    • Designed a compact, non-back drivable mechanical transmission using a face-gear pair and clutch.
    • Integrated a myoelectric controller and tactile sensor for sensory feedback.
    • Conducted a clinical viability test with two partial hand amputees using custom prostheses.

    Main Results:

    • The S-Finger achieved comparable speed (90°/s) and force (6.5 N) to existing prostheses.
    • The compact and rugged design proved suitable for clinical testing.
    • Amputee participants successfully completed dexterity tests and provided valuable feedback.

    Conclusions:

    • The developed S-Finger represents a promising alternative to current partial hand prostheses.
    • The device demonstrates mechanical viability and user acceptance in a clinical setting.
    • Findings will inform the development of next-generation partial hand prosthetic devices.