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Related Experiment Video

Updated: May 24, 2025

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A Batteryless Implantable System with Adaptive Near-Field Communication to Study Neurogastroenterological Disorders.

Neha Gour, Anis Ehsani, Amir Javan-Khoshkholgh

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |March 5, 2025
    PubMed
    Summary

    This study developed a batteryless, wireless gastric implant system for long-term neurophysiology monitoring. It enables adaptive, closed-loop communication for data transfer and therapeutic instructions, advancing gastrointestinal research.

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    Area of Science:

    • Biomedical Engineering
    • Neurogastroenterology
    • Wireless Communication Systems

    Background:

    • Long-term study of gastric neurophysiology requires advanced implantable devices.
    • Existing systems often lack wireless, adaptive communication capabilities.
    • Batteryless solutions are crucial for minimizing invasiveness and maximizing implant longevity.

    Purpose of the Study:

    • To develop a batteryless, wireless system for closed-loop communication with gastric implants.
    • To enable adaptive near-field communication for bidirectional data and power transfer.
    • To facilitate long-term monitoring and electroceutical therapy of the gastric system.

    Main Methods:

    • A wearable unit (WU) and implantable unit (IU) system using near-field communication (NFC) at 13.56 MHz.
    • Load-shift keying (LSK) for transmitting neurophysiological data from IU to WU.
    • Amplitude-shift keying (ASK) for transmitting therapeutic instructions from WU to IU.
    • A half-duplex protocol and self-clocking algorithm for robust data transmission.

    Main Results:

    • Successful demonstration of wireless power and bidirectional data transfer between WU and IU.
    • Achieved a data transfer rate of 125 kbps with no communication mismatch.
    • Validated the system's capability for adaptive inductive link communication.

    Conclusions:

    • The developed system provides a viable solution for batteryless, wireless gastric implants.
    • Enables real-time neurophysiological monitoring and targeted electroceutical interventions.
    • Paves the way for advanced, long-term gastrointestinal research and clinical applications.