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Disposable soft 3 axis force sensor for biomedical applications.

Damith Suresh Chathuranga, Zhongkui Wang, Yohan Noh

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 7, 2016
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel disposable soft 3D force sensor. It accurately measures force, displacement, and vibrations using Hall Effect sensors and a magnet, ideal for medical and haptic applications.

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    Area of Science:

    • Biomedical Engineering
    • Materials Science
    • Sensor Technology

    Background:

    • Accurate 3D force and displacement sensing is crucial for minimally invasive surgery and haptic feedback systems.
    • Existing sensors may lack disposability, biocompatibility, or ease of miniaturization.
    • Soft, flexible sensors offer advantages in conforming to complex geometries and ensuring patient safety.

    Purpose of the Study:

    • To develop and characterize a novel, disposable, soft 3D force sensor.
    • To enable simultaneous measurement of force, displacement, and vibrations.
    • To explore the sensor's potential in medical and haptic applications.

    Main Methods:

    • A cylindrical beam of silicon rubber embedded with a niobium permanent magnet.
    • Three orthogonally placed Hall Effect sensors to detect magnetic flux changes.
    • Calibration using a lookup table to correlate magnetic flux variations with force/displacement in 3D.

    Main Results:

    • The sensor successfully measures force, displacement, and vibrations in three dimensions.
    • Demonstrated the principle of operation based on magnet displacement and Hall Effect sensing.
    • Characterized sensor performance, highlighting its sensitivity and responsiveness.

    Conclusions:

    • The proposed soft 3D force sensor offers a cost-effective, biocompatible, and miniaturizable solution.
    • It holds significant potential for enhancing precision and safety in minimally invasive surgery.
    • The sensor technology can advance the development of realistic haptic feedback systems.