📋 FDA Reference

FlowTriever Retrieval Aspiration System

Inari Medical, Inc.

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Summary: The FlowTriever Retrieval Aspiration System is a device used for mechanical thrombectomy in patients with pulmonary embolism. It is typically used by interventional radiologists or cardiologists in hospital settings.

FDA Clearance Information

Pathway ? 510(k)
Number ? K183198 ↗
Decision Date ? December 17, 2018
Product Code ? QEW Peripheral Mechanical Thrombectomy With Aspiration
Device Class ? Class 2
Evidence ? 14 studies

The FlowTriever Retrieval Aspiration System by Inari Medical was cleared via the FDA 510(k) pathway on December 17, 2018. It is a Class 2 medical device.

What It Is

The FlowTriever Retrieval Aspiration System is a mechanical thrombectomy device designed to remove blood clots from the pulmonary arteries. It uses a large-bore catheter to aspirate clots, providing a minimally invasive option for treating pulmonary embolism. This device allows for rapid clot removal without the need for thrombolytic drugs, reducing the risk of bleeding complications.

FDA-Cleared Indications

  • The FlowTriever Retrieval Aspiration System is indicated for the percutaneous removal of thromboemboli and thrombus from the peripheral vasculature.
  • The system is indicated for the treatment of pulmonary embolism through percutaneous mechanical thrombectomy and aspiration.
  • Use is limited to the vessels, patient populations, catheter sizes and configurations described in the applicable FDA-cleared labeling.

Clinical Applications

  • Percutaneous mechanical thrombectomy for selected pulmonary embolism patients.
  • Aspiration and mechanical removal of thrombus from the pulmonary arteries.
  • Percutaneous removal of thrombus from selected peripheral vessels when the applicable FlowTriever configuration is indicated.
  • Treatment in a hospital catheterization laboratory when rapid clot removal is needed or thrombolytic therapy is unsuitable or contraindicated.

Reported off-label uses

  • Use for selected deep vein thrombosis in peripheral veins may occur in clinical practice, but the exact indication depends on the device configuration and current labeling.
  • Use in other large-vessel venous thromboses outside the cleared indication has been reported, but it should be considered off-label and evaluated by an experienced specialist.

Off-label use: these uses are reported in practice or the literature but are not part of the FDA-cleared indications. Physicians may use a cleared device off-label based on their medical judgment; the manufacturer may not promote off-label uses.

Practical Considerations

  • The system includes different catheter and sheath sizes; selection depends on vessel diameter, clot burden, access anatomy and the specific cleared product configuration.
  • Access is commonly obtained through the femoral or internal jugular vein, with fluoroscopic guidance and large-bore venous access.
  • Procedures require clinicians trained in large-bore catheter techniques, aspiration thrombectomy and management of potential bleeding or vascular injury.
  • The device is not itself an MRI implant. MRI eligibility depends on any retained components, access-site materials and the current product-specific MRI labeling; the treating team should verify this before scanning.
  • Potential complications include access-site bleeding, vascular injury, arrhythmia, pulmonary artery injury, blood loss, contrast-related complications and incomplete clot removal. Patient-specific contraindications and warnings are listed in the manufacturer's instructions for use.

Related Literature

The linked study discusses a case of cardiac tamponade following the use of the FlowTriever System for percutaneous pulmonary embolectomy. While the device is effective in reducing clot burden, this case highlights the potential for serious complications. The study suggests careful patient selection and monitoring during the procedure. Limitations include its focus on a single case, which may not represent typical outcomes.

Procedures that use this device

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 is the FlowTriever Retrieval Aspiration System used for?

It is used for mechanically removing blood clots from the pulmonary arteries in patients with pulmonary embolism.

What specialties typically use this device?

Interventional radiologists and cardiologists typically use this device in hospital settings.

What are the FDA-cleared indications?

The device is cleared for use in patients with pulmonary embolism who have a significant clot burden and are at intermediate to high risk.

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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