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Related Experiment Video

Updated: Feb 24, 2026

Assessment of the Cytotoxic and Immunomodulatory Effects of Substances in Human Precision-cut Lung Slices
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A novel surrogate lung material for impact studies: Development and testing procedures.

H Parsa1, A Karac1, A Ivankovic1

  • 1UCD School of Mechanical and Materials Engineering, Dublin, Ireland.

Journal of Biomechanics
|August 22, 2017
PubMed
Summary

Researchers developed a surrogate lung material (SLM) using polyurethane foam and microcapsules to simulate human lung responses to injury. This material accurately replicates lung mechanics and damage patterns, aiding blast injury research.

Keywords:
Bowen curvesBursting pressureFluid-filled microcapsulesFoamLung injurySurrogate lung

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Last Updated: Feb 24, 2026

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Area of Science:

  • Biomaterials Engineering
  • Biomechanics
  • Trauma Research

Background:

  • Understanding human lung response to dynamic loading is crucial for trauma assessment.
  • Existing models often lack the ability to accurately replicate both mechanical properties and damage progression.

Purpose of the Study:

  • To develop a novel surrogate lung material (SLM) that mimics human lung dynamic response and damage.
  • To validate the SLM's ability to predict blast injury patterns.

Main Methods:

  • Fabrication of SLM using polyurethane foam and fluid-filled gelatine microcapsules.
  • Mechanical testing (low and high rate compression) of microcapsules and SLM.
  • CT scanning for damage analysis before and after impact.
  • Comparison of SLM damage with established injury criteria (Bowen curves).

Main Results:

  • Microcapsules exhibited a bursting pressure of ~5 bar, comparable to injury thresholds.
  • Calculated stress wave speed in SLM fell within the human lung range (16-70 m/s).
  • CT scans effectively visualized damage extent and distribution in SLM, showing excellent agreement with Bowen curves.

Conclusions:

  • The developed SLM accurately reproduces human lung mechanical properties and dynamic response.
  • SLM serves as a viable tool for studying blast-induced lung injury and validating predictive models.