RXi and the ultra-thin ACIST Navvus® MicroCatheter give you the freedom to quickly and easily assess Fractional Flow Reserve (FFR) using your 0.014″ guidewire of choice, along with a simple and intuitive user interface and flexible mounting configurations.

Assessing complex FFR

RXi offers you the power to simplify assessment of complex coronary artery disease.

Complexity, simplified

Navvus enables assessment of complex coronary artery disease with your workhorse guidewire of choice.*

Providing value

Navvus can save valuable time and resources when assessing complex coronary artery disease.1

Clinically proven

Strong correlative performance between physiological assessment measured by Navvus compared to standard pressure wires validates Navvus as a true alternative.1

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See system highlights and other RXi features.

More deliverable. More crossable.

Learn more about Navvus.

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Meet the next-generation FFR system engineered to seamlessly integrate with your hemodynamic system and FFR software.

Acist RXi mini


Four unique, adaptable mounting configurations to accommodate your preferred workflow.

Acist RXi mini catheter


Seamless with all hemodynamic systems for streamlined patient data management.

Acist RXi bedrail


Minimal cath lab footprint.

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Contact a rep to learn more about ACIST RXi.

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