The ACIST RXi® system combines accurate and reliable Fractional Flow Reserve (FFR) measurements with the advantages of Rapid Exchange technology.

The RXi system with the ultra-thin ACIST Navvus MicroCatheter gives you the freedom to quickly and easily assess FFR using your 0.014



Benefits of the RXi Rapid Exchange FFR SYSTEM:
  • Freedom to use your 0.014″ guidewire of choice
  • Fiber-optic accuracy from start to finish
  • Ability to maintain wire position
  • Simple plug-and-play system


On-Demand Webinar

Advancing FFR Technology to Improve Workflow:
Applications of a MicroCatheter-Based FFR System

Clinical references and product information available at

Testimonial and procedural videos are available on