RA Sim

Mixed Simulator of Thoracic Regional Anesthesia

This robust, turnkey mixed reality simulator simulates part of an anatomically correct thorax for practicing, learning, teaching, and debriefing thoracic paravertebral blocks and placement of thoracic epidurals with and without ultrasound guidance or assistance.

Designed for austere environments, it does not require wireless or internet access or wet fluids; accepts 110/220V, 50/60Hz. It can be unpacked/set up/be operational by an unfamiliar person in 5-7 minutes. The portable simulator fits inside a military-spec padded case with in-built wheels and telescoping pull-handle that can travel as checked airline luggage and weighs < 50 lbs (23 kg).



  • CT Scan-based 3D printed high-anatomical fidelity spine plastic model encased in gel
  • Virtual model of the anatomy of the spinal cord, nerves, lungs, ligaments, veins, and arteries
  • Tracked instruments: needle, ultrasound probe, virtual camera (interoperable between SMARTS-compliant simulators)
  • Common SMARTS modular stand for use with other modular anatomies and procedures
  • Automated scoring and replay system for after action review (AAR)
  • Automated curriculum (including videos, lectures, mini-skills, and detailed scoring algorithms) for ultrasound-guided, -assisted, and landmark techniques and procedures

RA simulator



  • Thoracic Paravertebral with Ultrasound Guidance/Assistance/Landmark (Out-of-Plane/In-plane)
  • Thoracic Epidural with Ultrasound Assistance/Landmark (Midline/Paramedian)
  • Under Development: Thoracic Intercostal with Ultrasound Guidance/Assistance/Landmark


  • Adheres to SMARTS (System of Modular Augmented Reality Tracking Simulators) rapid sim. development platform specs
  • Quick-release placement and indexing of SMARTS-compliant anatomies to SMARTS platform
  • Anatomically correct, based on medical imaging scans of a real human
  • Precise sub-millimeter tracking of all tracked tools
  • High-durability skin can be rejuvenated in-situ for indefinite reuse

screenshot of RA simulation




  • Functional Loss-Of-Resistance syringe
  • Simulated hydrolocation in US image & 3D visualization
  • Adjustable lung and epidural space for difficulty levels
  • Adjustable view modes for realism and AARs
  • Ultrasound probe with depth markers
  • Hybrid cross-sectional view (3D viz in back half)
  • Anisotropy simulation for both needle and lung
  • Cognitive aids for US probe and needle orientation
  • Tactile feedback of bone and ligament puncture
  • Debriefing with replay of past/saved procedures

RA sim needle and ultrasound probe components


RA Simulator Study 2016