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Related Concept Videos

Design Example: Resistive Touchscreen01:14

Design Example: Resistive Touchscreen

797
A device engineer plays a crucial role in designing user interfaces for mobile devices. One such interface is the resistive touchscreen, which fundamentally consists of two metallic layers: a flexible upper layer and a rigid lower layer, separated by a narrow gap. The high resistance between these two layers is a key characteristic of this design.
When a user touches the screen, the two layers make contact at a specific point known as the touchpoint. This contact reduces the resistance between...
797

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A cosmetic prosthetic digit with bioinspired embedded touch feedback.

Diego Barone, Marco D'Alonzo, Marco Controzzi

    IEEE ... International Conference on Rehabilitation Robotics : [Proceedings]
    |August 18, 2017
    PubMed
    Summary

    A new low-cost prosthetic finger, the DESC-finger, provides vibrotactile touch feedback for partial hand amputees. This sensory feedback may improve motor control and body schema restoration in daily activities.

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    Area of Science:

    • Biomedical Engineering
    • Rehabilitation Technology
    • Prosthetics

    Background:

    • Partial hand amputation is the most common amputation globally, often treated with passive cosmetic prostheses.
    • Existing cosmetic prostheses offer limited motor function and lack crucial sensory feedback, impacting body schema restoration.
    • Sensory feedback is vital for improving prosthesis control and user embodiment.

    Purpose of the Study:

    • To develop and evaluate a low-cost cosmetic digital prosthesis with integrated touch feedback.
    • To assess the effectiveness of the DESC-finger in improving motor control for partial hand amputees.
    • To provide a sensory feedback solution for individuals experiencing loss of sensibility with cosmetic digits.

    Main Methods:

    • Development of the DESC-finger prosthesis, incorporating Discrete Event-driven Sensory feedback Control (DESC) for vibrotactile feedback.
    • A single-subject study involving one amputee using the prototype at home for two months.
    • Experimental assessment using a qualitative interview and a quantitative virtual eggs test.

    Main Results:

    • Preliminary results from the virtual eggs test suggest improved motor control with the DESC-finger.
    • The interview indicated potential benefits for daily life activities and addressing the loss of sensibility.
    • The device's low cost and manufacturing process make it suitable for diverse economic settings.

    Conclusions:

    • The DESC-finger demonstrates potential as an effective, low-cost solution for enhancing partial hand prosthesis function through sensory feedback.
    • Time-discrete vibrotactile feedback may improve motor control and user experience in real-world conditions.
    • This technology offers a viable option for both current cosmetic digit users and those seeking sensory restoration.