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An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces
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Design, implementation, and evaluation of a physiological closed-loop control device for medically-induced coma.

Jingzhi An, Patrick L Purdon, Ken Solt

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
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    This study developed a closed-loop control device for anesthetic drug delivery, showing feasibility for inducing medically-induced coma. Pre-clinical tests in rodents suggest a reliable system for future human trials.

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    Area of Science:

    • Biomedical Engineering
    • Anesthesiology
    • Neuroscience

    Background:

    • Clinical translation of patient-controlled local anesthesia (PCLC) devices is hindered by safety and reliability concerns.
    • Adequate performance evaluation methods for PCLC devices remain unclear, posing challenges for clinical adoption.

    Purpose of the Study:

    • To design, implement, and evaluate a PCLC device for delivering medically-induced coma.
    • To address challenges in PCLC device reliability, safety, and performance evaluation for potential clinical trials.

    Main Methods:

    • Developed a PCLC device that automatically adjusts propofol infusion based on electroencephalogram (EEG) burst suppression patterns.
    • Created a computational patient model for hardware-in-the-loop simulations to assess device performance under perturbations.
    • Conducted pre-clinical performance testing of the PCLC device in rodent models.

    Main Results:

    • The PCLC device demonstrated robust performance in hardware-in-the-loop simulations using a computational patient model.
    • Rodent studies indicated that closed-loop control for medically-induced coma is feasible and reliable.
    • The developed PCLC device and pre-clinical data support the initiation of a pilot clinical trial.

    Conclusions:

    • The designed PCLC device shows promise for safe and reliable delivery of medically-induced coma.
    • Pre-clinical evidence supports the feasibility of human clinical trials for this closed-loop anesthetic control system.