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Proposal of bioinstrumentation using flex sensor for amputated upper limb.

Takahiko Mori, Yuya Tanaka, Misaki Mito

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 9, 2015
    PubMed
    Summary

    This study introduces a novel bioinstrumentation system for amputated limbs using flex sensors. This innovation reduces electronic components and heat generation compared to previous strain gage-based systems.

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    Area of Science:

    • Bioinstrumentation
    • Biomedical Engineering
    • Prosthetics

    Background:

    • Previous bioinstrumentation for amputated upper limbs relied on strain gages.
    • Strain gage systems required numerous electronic components (bridge and multi-amplifier circuits).
    • Low resistance values in strain gages could lead to overcurrent and surplus heat generation.

    Purpose of the Study:

    • To develop a more efficient bioinstrumentation system for amputated upper limbs.
    • To address the limitations of previous strain gage-based systems, specifically component count and heat generation.
    • To improve the usability and safety of upper limb prosthetics.

    Main Methods:

    • Replaced strain gages with flex sensors in the bioinstrumentation system.
    • Utilized the shape deformation of amputated upper limbs for signal generation.
    • Focused on a system that does not rely on skin-surface myoelectricity.

    Main Results:

    • The flex sensor-based system significantly reduces the number of required electronic parts.
    • Elimination of bridge and multi-amplifier circuits simplifies the system design.
    • Reduced risk of overcurrent and surplus heat generation due to the nature of flex sensors.

    Conclusions:

    • Flex sensors offer a viable and advantageous alternative to strain gages in this bioinstrumentation application.
    • The new system presents a simpler, potentially more reliable, and safer solution for amputated upper limb prosthetics.
    • This advancement contributes to the development of improved assistive technologies for individuals with limb loss.