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    A new low-cost haptic force needle insertion simulator (LCNIS) uses material fracture to replicate tissue resistance during medical training. This cost-effective device accurately simulates needle insertion forces, enhancing procedural training.

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    Area of Science:

    • Medical Simulation
    • Biomedical Engineering
    • Surgical Training

    Background:

    • Traditional haptic training for invasive procedures relies on expensive resources like cadavers or advanced robots.
    • Accurate force feedback is crucial for effective simulation of medical procedures such as peripheral nerve blocks.

    Purpose of the Study:

    • To introduce a novel, low-cost haptic force needle insertion simulator (LCNIS) for medical training.
    • To validate the accuracy of the LCNIS in replicating needle insertion forces using material fracture.

    Main Methods:

    • Developed the LCNIS using disposable cartridges that utilize material fracture to simulate tissue resistance.
    • Conducted material fracture experiments to test various materials, including polycarbonate and fluorinated ethylene propylene.
    • Performed cadaver experiments to compare the force feedback of the LCNIS with actual cadaver tissue.

    Main Results:

    • Material testing identified polycarbonate (9.85 N) and fluorinated ethylene propylene (0.84 N) as materials with distinct puncture forces.
    • Cadaver experiments demonstrated low error (1.00 N, 0.01 N, 1.54 N) and standard deviations (0.60 N, 0.55 N, 0.41 N) between the simulator and cadaver tissue.
    • The LCNIS effectively replicated the force feedback of needle insertion into biological tissue.

    Conclusions:

    • The LCNIS offers a cost-effective and adaptable solution for haptic simulation in medical training.
    • This technology can be modified to simulate a broad range of forces, supporting training for diverse medical procedures.
    • The LCNIS enhances the realism and accessibility of haptic feedback in medical simulation training.