Swine Test Report for ATBM Injury Correlate Development and Validation

Abstract

The Advanced Total Body Model (ATBM) is a series of models and injury correlates built to predict injury caused by blunt impact. The development and validation of these injury correlates is limited by the lack of injury outcome datasets. Historically, injury testing has been conducted primarily on post mortem human subjects (PMHS). PMHS testing provides a good anatomical representation for blunt impact injury, but may not properly exhibit live tissue inflammatory responses needed to observe blunt injury outcomes such as contusion, particularly in impacts to the thoracic and abdominal soft tissues. To address this need for live injury data, L-3 Applied Technologies, Inc (L-3 ATI) designed and conducted a series of impact tests in an anesthetized swine model in collaboration with the Medical College of Wisconsin (MCW). Eleven swine test series (one cadaver and 10 live specimens) were conducted. These impact testsyielded non-injury and injury outcomes for three of four target areas: pneumothorax, liverlaceration, and intestinal contusion. Impacts to the stomach only yielded non-injury outcomes,likely because the organ is hollow and not fixed to any rigid structure in the body. Additionally,stomach-targeted impact tests were almost always associated with other injuries such as liverlaceration, spleen laceration, and intestinal contusion.The data collected provides a significant portion of the results needed to complete thedevelopment and validation of the thoracic and abdominal soft tissue injury correlates based onthe ATBM. Swine testing results also provide evidence that soft tissue injuries from blunt impactare best replicated by using live anesthestetized subjects, where active inflammatory injuryresponses can be consistently observed. In addition, tissue compression tests were conducted at avariety of strain rates, allowing for a better understanding of the parameter range andexperimental capabilities needed for future material property testing.

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Document Details

Document Type
Technical Report
Publication Date
Dec 12, 2018
Accession Number
AD1067084

Entities

People

  • Kiran Mathews
  • Laurel Ng

Tags

Communities of Interest

  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accelerometers
  • Accuracy
  • Cadavers
  • Calibration
  • Compression
  • Data Acquisition
  • Department Of Defense
  • Energy
  • Frequency
  • Impact Tests
  • Launchers
  • Load Cells
  • Materials
  • Measurement
  • Nonlethal Weapons
  • Soft Tissues
  • Strain Rate
  • Stress Strain Relations
  • Targets
  • Test Methods
  • Tissues
  • Validation
  • Verification
  • Wounds And Injuries

Fields of Study

  • Medicine

Readers

  • Explosive Engineering.
  • Trauma Surgery or Emergency Medicine.