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An MR-Conditional Needle Driver for Robot-Assisted Spinal Injections: Design Modifications and Evaluations.

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    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |September 10, 2022
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    Summary

    This study enhances an MRI-guided needle driver for spinal injections, improving sterilization, sterile field maintenance, and usability. Force analysis ensures safe robotic attachment during procedures.

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    Area of Science:

    • Medical Devices
    • Robotics in Medicine
    • Magnetic Resonance Imaging

    Background:

    • MRI-guided spinal injections require specialized tools.
    • Existing needle drivers may not meet stringent sterilization or ergonomic standards.
    • Robotic assistance in spinal procedures necessitates secure and intuitive tool attachment.

    Purpose of the Study:

    • To redesign a remotely-actuated needle driver for improved MRI compatibility.
    • To enhance the device for better cleaning, sterilization, and sterile field preservation.
    • To analyze forces for safe intraoperative attachment to a robotic base.

    Main Methods:

    • Implemented design modifications to a 2-DOF MR-Conditional needle driver.
    • Evaluated cleaning and sterilization compliance.
    • Assessed sterile field preservation during needle attachment.
    • Performed dynamic and static force/torque analysis for robotic base integration.

    Main Results:

    • The modified needle driver is designed for enhanced regulatory compliance.
    • Improved ergonomics and intuitiveness for user handling are achieved.
    • Force and torque data provide critical insights into robotic attachment safety.

    Conclusions:

    • The redesigned needle driver offers enhanced safety and usability for MRI-guided spinal injections.
    • The design modifications address key challenges in clinical adoption and robotic integration.
    • Understanding attachment forces is crucial for safe robot-assisted spinal surgery.