Partial Task Training IV/Orthopedic/Tourniquet Arm (PTT-ARM)

Operations in the U.S. Military have pointed out there is a need for more effective training for trauma. Current technology allows more realistic portrayal of human anatomy and traumatic injury providing a more effective way of training. IVIR Inc. recognized the need for a more realistic part-task trainer and created a human replicate upper extremity for realistic trauma training. The development of a synthetic, orthopedic, physiologically modeled arm has raised the training for trauma to unprecedented levels of fidelity.

The Partial Task Training IV/Orthopedic/Tourniquet Arm (PTT-Arm) research and development (R&D) project was to develop an advanced synthetic human arm partial task trainer, capable of pronation and suponation with end effectors to execute three functional areas:

  • Orthopedic injury immobilization
  • Hemorrhage control
  • IV administration
The development began with realistic anatomical designs, including:
  • Realistic bone structure
  • Realistic muscle groups
  • Realistic arteries and veins
  • Hemorrhage control system
  • Fascia layer
  • Realistic overlaying skin (replaceable)
  • Breakaway wrist to simulate a broken wrist if too much force is applied during extrication

The PTT-Arm also incorporated physiological models derived from the University of Mississippi’s open source physiological modeling program, HumMod. The models are displayed on a tablet computer and are designed to show the effects of hemorrhage and IV fluid resuscitation, including heart rate and blood pressure changes.

Three versions of the PTT-Arm were created:
  • Version A - a surgical version made with bio-realistic, live-tissue replacement materials
  • Version B - a durable version that allows for rough handling and can be attached to a mannequin
  • Version C - an advanced mechanical version that includes multiple electro/mechanical end effectors and fits between versions A and B in regards to realism and durability, respectively

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