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A Multi-Electrode Electric Field Based Sensing System For Ophthalmic Anesthesia Training.

Biswarup Mukherjee, Boby George, Mohanasankar Sivaprakasam

    IEEE Transactions on Biomedical Circuits and Systems
    |November 1, 2014
    PubMed
    Summary

    This study introduces a novel, 3D-printable manikin for ophthalmic anesthetic block training. The system uses capacitive sensing to provide real-time feedback, enhancing trainee safety and skill development for eye procedures.

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    Area of Science:

    • Ophthalmology
    • Medical Simulation
    • Biomedical Engineering

    Background:

    • Ophthalmic surgery requires precise local anesthesia administration within the confined intraorbital space.
    • Current training methods using animal cadavers or human subjects carry anatomical inaccuracies and patient risks.
    • A realistic training system with real-time feedback is needed to improve safety and effectiveness of ophthalmic anesthetic blocks.

    Purpose of the Study:

    • To present an anatomically accurate, rapid-prototyped manikin for ophthalmic anesthetic block training.
    • To develop a system providing real-time feedback on needle placement and proximity to critical ocular structures.
    • To enhance trainee proficiency and reduce risks associated with live procedures.

    Main Methods:

    • Development of a rapid-prototyped manikin replicating human orbital and ocular anatomy.
    • Integration of a multi-electrode electric field/capacitive sensing system to detect needle depth and proximity to muscles/optic nerve.
    • Utilization of a virtual instrument with a 3D GUI for real-time needle position display and feedback.

    Main Results:

    • The manikin system accurately emulates human orbital anatomy for anesthetic block training.
    • The capacitive sensing system effectively detects needle depth and proximity to sensitive structures.
    • Prototype testing validated the system's usefulness for practical training.

    Conclusions:

    • The anatomically accurate, rapid-prototyped manikin offers a safe and effective training solution for ophthalmic anesthetic blocks.
    • Real-time feedback via capacitive sensing improves trainee precision and safety.
    • This simulation system has significant potential for reducing complications in ophthalmic surgery training.