📊 Evidence-Based Reference

indigo aspiration system cat rx and separator 4 - penumbra engine pump and canister

Penumbra

Summary: The Indigo Aspiration System CAT RX by Penumbra is a mechanical thrombectomy device used primarily for venous thrombus removal. Key evidence highlights its application in acute coronary syndrome with a large thrombus burden.

FDA Clearance Information

Pathway 510K
Decision Date May 15, 2018
Product Code QEW
Device Class Class 2
Evidence 40 studies

The Indigo Aspiration System CAT RX was cleared by the FDA via the 510(k) pathway on May 15, 2018. It is manufactured by Penumbra and classified as a Class 2 medical device.

What It Is

The Indigo Aspiration System CAT RX is a mechanical thrombectomy device designed for the removal of thrombi in venous systems. It operates by aspirating thrombus material through a catheter connected to the Penumbra Engine Pump.

Clinical Applications

This device is commonly used in clinical scenarios involving high thrombus burden, such as acute coronary syndrome and percutaneous coronary interventions. It is intended to improve blood flow by removing obstructive thrombi.

Evidence Summary

The available literature includes 9 studies, comprising RCTs, prospective, and retrospective studies, with publication years ranging from 2021 to 2025. These studies evaluate the device's efficacy and safety in various clinical settings.

Reported Outcomes

Published studies report that the Indigo Aspiration System CAT RX is effective in reducing thrombus burden in acute coronary syndrome and during percutaneous coronary interventions. The CHEETAH study highlighted its potential to improve myocardial reperfusion by mitigating distal embolization.

Safety Profile

Reported complications include device-related failures and adverse events during percutaneous coronary interventions. Insights from the MAUDE database suggest potential failure modes, although specific details are limited.

Evidence Limitations

The evidence is limited by the small number of studies and the lack of large-scale RCTs. Further research is needed to establish long-term outcomes and to compare its efficacy with other thrombectomy devices.

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 CAT RX?

The device is indicated for mechanical thrombectomy in venous systems, particularly in cases of acute coronary syndrome with a large thrombus burden.

What outcomes have been reported in clinical studies?

Studies have reported effective thrombus removal and improved myocardial reperfusion, particularly in high thrombus burden scenarios.

What complications have been reported?

Safety data indicate potential device-related failures and adverse events during use in percutaneous coronary interventions.

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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