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Characterizing and Simulating Needle Insertion Forces for Percutaneous Renal Access.

Lauren H Poniatowski1, Sneha S Somani2, Domenico Veneziano3

  • 11 Department of Urology, University of Minnesota , Minneapolis, Minnesota.

Journal of Endourology
|August 14, 2016
PubMed
Summary
This summary is machine-generated.

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This study quantifies needle forces during percutaneous renal access and develops a multilayer synthetic simulator for training, enhancing procedural safety and skill acquisition in percutaneous nephrolithotomy.

Area of Science:

  • Urology
  • Medical Simulation
  • Biomechanical Engineering

Background:

  • Percutaneous needle access is a crucial step in percutaneous nephrolithotomy.
  • Developing realistic training models prevents negative skill transfer and improves procedural safety.
  • Accurate simulation requires understanding the forces involved in renal access.

Purpose of the Study:

  • To quantify needle insertion forces during percutaneous renal access using human cadaveric tissue.
  • To develop a novel multilayer synthetic physical simulator based on human tissue data.
  • To ensure the simulator is compatible with the SimPORTAL fluoro-less C-arm trainer (CAT) camera system.

Main Methods:

  • Collected needle insertion force vs. displacement data from fresh human cadaveric kidneys.
Keywords:
educationpercutaneous nephrolithotomyrenal stonesimulation

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  • Developed a multilayer synthetic model simulating distinct tissue layers using collected data.
  • Compared the force characteristics of the multilayer model, a single-layer model, and human tissue.

    • Main Results:

    • Human skin puncture forces ranged from 2.75-2.80 N; simulated tissue forces were 4.53-4.19 N.
    • Human tissue force-displacement slope was 0.35-0.59 N/cm.
    • The multilayer model showed a lower slope (0.17 N/cm) compared to human tissue and the single-layer model (5.08-9.79 N/cm).

    Conclusions:

    • Defined forces for percutaneous renal access using cadaveric tissue.
    • Designed a multilayer synthetic simulator for training percutaneous needle access.
    • The simulator is compatible with the CAT camera system for enhanced training.