📊 Evidence-Based Reference

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Inari Medical

Summary: The FlowTriever Retrieval Aspiration System by Inari Medical is a device designed for mechanical thrombectomy in venous thromboembolism, particularly pulmonary embolism. Key evidence highlights its use in complex cases such as Fontan conduit obstruction and mitral valve vegetations.

FDA Clearance Information

Pathway 510K
Decision Date April 30, 2021
Product Code QEW
Device Class Class 2
Evidence 14 studies

The FlowTriever Retrieval Aspiration System was cleared by the FDA through the 510(k) pathway on April 30, 2021. It is manufactured by Inari Medical and classified as a Class 2 device.

What It Is

The FlowTriever Retrieval Aspiration System is a mechanical thrombectomy device used for the removal of thrombus in venous thromboembolism cases. It operates by aspirating thrombus material from the vasculature, providing a non-surgical option for thrombus removal.

Clinical Applications

Common clinical scenarios for the FlowTriever include treatment of pulmonary embolism and thrombus removal in patients with complex cardiovascular conditions such as Fontan circulation. It is particularly useful in cases where traditional surgical interventions pose high risks.

Evidence Summary

The available literature includes 7 studies, comprising case reports and other observational studies, conducted between 2022 and 2026. These studies explore the device's application in various complex thromboembolic conditions.

Reported Outcomes

Published studies report successful thrombus removal in cases of pulmonary embolism and Fontan conduit obstruction. The device has been shown to achieve significant thrombus reduction and improve hemodynamic stability in treated patients.

Safety Profile

Reported complications include potential risks of embolization and vascular injury during the procedure. However, the studies reviewed did not provide detailed safety outcomes, highlighting a need for further investigation.

Evidence Limitations

The evidence is limited by the small number of studies and the predominance of case reports, which may not provide comprehensive safety and efficacy data. Further large-scale, controlled studies are needed to validate findings and expand clinical indications.

Linked Studies (14)

PubMed • 2026

Percutaneous Aspiration of a Large Mitral Valve Vegetation With Full-Body Protection: A Novel Approach.

JACC. Case reports

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2025

Novel percutaneous aspiration thrombectomy in Fontan conduit obstruction with cardiogenic shock. Case report.

International journal of cardiology. Congenital heart disease

Case Report View Source →
PubMed • 2025

Early Experience Using Venous Sheath With Embolic Protection During Thrombectomy of Inferior Vena Cava and Complex Iliofemoral Deep Vein Thrombosis.

The American surgeon

Case Series View Source →
PubMed • 2024

Percutaneous pulmonary aspiration thrombectomy in an adolescent fontan patient using a large-bore system.

Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions

Other View Source →
PubMed • 2024

Pulmonary Embolism With Syncope Treated With Inari FlowTriever®.

Cureus

View Source →
PubMed • 2024

[Interventional therapy of pulmonary embolism - update].

Deutsche medizinische Wochenschrift (1946)

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2024

Procedure-Related Mortality in Aspiration Thrombectomy for Pulmonary Embolism: A MAUDE Database Analysis of the Inari FlowTriever and Penumbra Indigo Systems.

Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2023

Outcomes in High-Risk Pulmonary Embolism Patients Undergoing FlowTriever Mechanical Thrombectomy or Other Contemporary Therapies: Results From the FLAME Study.

Circulation. Cardiovascular interventions

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2023

Mechanical thrombectomy of inferior vena cava filter-associated caval thrombosis using FlowTriever and ClotTriever systems.

Journal of vascular surgery. Venous and lymphatic disorders

Other View Source →
PubMed • 2022

Percutaneous FlowTriever Retrieval/Aspiration System for Impending Paradoxical Embolism: A New Tool?

JACC. Cardiovascular interventions

View Source →
PubMed • 2022

A Novel Case of Cardiac Tamponade after Percutaneous Pulmonary Embolectomy Using the FlowTriever Retrieval/Aspiration System.

European journal of case reports in internal medicine

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2020

A Prospective, Single-Arm, Multicenter Trial of Catheter-Directed Mechanical Thrombectomy for Intermediate-Risk Acute Pulmonary Embolism: The FLARE Study.

JACC. Cardiovascular interventions

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2018

Percutaneous Pulmonary Embolectomy Using the FlowTriever Retrieval/Aspiration System.

Journal of vascular and interventional radiology : JVIR

View Source →
ClinicalTrials.gov

FlowTriever2 Pulmonary Embolectomy Clinical Study

View Source →

Frequently Asked Questions

What are the clinical indications for FlowTriever Retrieval Aspiration System?

The device is indicated for mechanical thrombectomy in venous thromboembolism, particularly in cases of pulmonary embolism.

What outcomes have been reported in clinical studies?

Studies have reported successful thrombus removal and improved hemodynamic stability in patients with pulmonary embolism and other complex thromboembolic conditions.

What complications have been reported?

Reported complications include risks of embolization and vascular injury, though detailed safety data is limited.

Disclaimer: This page compiles publicly available regulatory and published clinical evidence for educational reference. It does not constitute medical advice, product endorsement, or a recommendation for clinical use. Always consult manufacturer documentation and clinical judgment for patient care decisions.

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