📊 Evidence-Based Reference

Indigo Aspiration System - Aspiration Catheter 7 and Separator 7

Penumbra, Inc.

Product: Indigo System — all models and sizes

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Summary: The Indigo Aspiration System by Penumbra is a mechanical thrombectomy device primarily used for venous thromboembolism. Key evidence highlights its effectiveness in cerebral venous sinus thrombosis and pulmonary embolism.

FDA Clearance Information

Pathway ? 510(k)
Number ? K193595 ↗
Decision Date ? August 19, 2020
Product Code ? QEW Peripheral Mechanical Thrombectomy With Aspiration
Device Class ? Class 2
Evidence ? 40 studies

The Indigo Aspiration System was cleared by the FDA via the 510(k) pathway on August 19, 2020. It is manufactured by Penumbra and classified as a Class 2 device.

What It Is

The Indigo Aspiration System is a mechanical thrombectomy device designed for the removal of thromboembolic material from the venous system. It utilizes a large-lumen catheter to aspirate clots, providing a minimally invasive treatment option.

FDA-Cleared Indications

  • Removal of thrombi and emboli from vessels in the peripheral vasculature.
  • Use in the peripheral vasculature, excluding the coronary and cerebral vasculature.
  • Intended for patients who require mechanical removal of thromboembolic material using aspiration.

Clinical Applications

  • Aspiration thrombectomy for selected peripheral venous thrombi and emboli.
  • Mechanical thrombectomy for deep vein thrombosis involving appropriately sized peripheral veins.
  • Removal of thrombus from dialysis grafts or fistulas when the treated anatomy and device size are compatible.
  • Aspiration-based treatment of selected peripheral vascular occlusions.

Reported off-label uses

  • Aspiration thrombectomy for pulmonary embolism has been reported in clinical practice, but use depends on the specific device labeling, anatomy, institutional protocols, and physician judgment.
  • Aspiration thrombectomy for cerebral venous sinus thrombosis has been described, but cerebral applications may fall outside the labeling for this peripheral vascular device.

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.

Evidence Summary

The available literature includes 15 studies, comprising case reports, prospective and retrospective analyses, and randomized controlled trials, published between 2023 and 2024.

Reported Outcomes

Published studies report successful partial recanalization in cerebral venous sinus thrombosis and effective thrombectomy in pulmonary embolism cases. The device has shown improved outcomes in patients with congenital heart disease undergoing thrombectomy.

Safety Profile

Reported complications include the need for transfusion in pediatric patients with congenital heart disease. Overall, the safety profile is consistent with other mechanical thrombectomy devices.

Evidence Limitations

The evidence is limited by the small number of randomized controlled trials and the need for larger studies to confirm efficacy and safety across diverse patient populations. Further research is needed to explore long-term outcomes.

Practical Considerations

  • The system includes a large-lumen Aspiration Catheter 7 and a Separator 7; catheter dimensions, required sheath size, and access strategy must be checked against the current instructions for use.
  • The device is introduced through vascular access and used with fluoroscopic imaging. Treatment commonly requires anticoagulation management and may use local anesthesia with moderate sedation or general anesthesia, depending on the procedure.
  • It is intended for peripheral vasculature and should not be assumed to be cleared for coronary or cerebral arterial use.
  • MRI safety depends on the specific components and whether they remain in the patient; consult the current manufacturer labeling before MRI.
  • Potential complications include bleeding at the access site, vessel injury, perforation, distal embolization, infection, contrast reaction, kidney injury, and recurrent thrombosis.

Procedures that use this device

Linked Studies (20)

PubMed • 2025

Randomized Controlled Trial of Mechanical Thrombectomy With Anticoagulation Versus Anticoagulation Alone for Acute Intermediate-High Risk Pulmonary Embolism: Primary Outcomes From the STORM-PE Trial.

Circulation

RCT|prospective View Source →
PubMed • 2025

A New Technique for Mechanical Thrombectomy in Patients With Acute Pulmonary Embolism: A Case Series.

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

Case Series View Source →
PubMed • 2025

Rescue catheter directed treatment for floating right atrial thrombi and deep vein thrombosis in patient with high-risk acute pulmonary embolism: a case report of multidisciplinary approach.

European heart journal. Case reports

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

Percutaneous vacuum-assisted tumor thrombectomy using angiovac and penumbra lightning 12 aspiration systems.

Radiology case reports

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

Safety and efficacy of mechanical aspiration thrombectomy for patients with acute lower extremity ischemia.

Journal of vascular surgery

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

Neuro-tracking catheter technology for coronary thrombus extraction: Indigo CAT RX Continuous Aspiration System - first use in Poland.

Postepy w kardiologii interwencyjnej = Advances in interventional cardiology

View Source →
PubMed • 2024

[Interventional therapy of pulmonary embolism - update].

Deutsche medizinische Wochenschrift (1946)

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

Super-Elderly Case of Acute Lower Limb Ischemia Treated with Indigo Aspiration System in Japan.

Annals of vascular diseases

Case Series 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 • 2024

Endovascular thrombectomy for cerebral venous sinus thrombosis using the Penumbra Indigo® Aspiration System.

Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences

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

Use of the Indigo CAT RX aspiration system during percutaneous coronary intervention.

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

Other View Source →
PubMed • 2024

Anesthetic Management for Aspiration Thrombectomy Using the Penumbra Indigo System in Pediatric Patients with Congenital Heart Disease.

Journal of cardiothoracic and vascular anesthesia

Other View Source →
PubMed • 2024

Penumbra Indigo® system to safely remove intracardiac thrombus in a 7-month-old infant with severe immunodeficiency disorder.

Cardiology in the young

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

Case Report: Catheter-based mechanical thrombectomy using the Indigo aspiration system in a case of systemic-to-pulmonary shunt thrombosis.

Frontiers in pediatrics

Case Report View Source →
PubMed • 2023

Mechanical Venous Thrombectomy Using Indigo Aspiration System: A Case Report.

Cureus

View Source →
PubMed • 2023

Indigo® Aspiration System for thrombectomy in pulmonary embolism.

Future cardiology

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

Penumbra Indigo Percutaneous Aspiration Thrombectomy System in the treatment of Aortic Endograft Iliac Limb Occlusion: Results from an Italian Multicentre Registry.

European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2022

Aspiration Thrombectomy with the Indigo System for Acute Lower Limb Ischemia: Preliminary experience and analysis of parameters affecting the outcome.

Annals of vascular surgery

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2022

Complications and Failure Modes of the Penumbra Indigo CAT RX Aspiration System in Percutaneous Coronary Intervention: Insights From the MAUDE Database.

Cardiovascular revascularization medicine : including molecular interventions

View Source →
PubMed • 2022

Technical success and short-term results from mechanical thrombectomy for lower extremity iliofemoral deep vein thrombosis using a computer aided mechanical aspiration thrombectomy device.

Journal of vascular surgery. Venous and lymphatic disorders

RCT|prospective|retrospective|case Series|other View Source →

Frequently Asked Questions

What are the clinical indications for Indigo Aspiration System?

The device is indicated for mechanical thrombectomy in cases of venous thromboembolism, including cerebral venous sinus thrombosis and pulmonary embolism.

What outcomes have been reported in clinical studies?

Studies have reported successful recanalization and improved clinical outcomes in thrombectomy procedures for cerebral and pulmonary embolisms.

What complications have been reported?

Safety data indicate complications such as transfusion requirements in specific patient groups, but overall safety is comparable to similar devices.

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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