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Ekos Micro-Infusion System

Ekos Corporation

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Summary: The Ekos Micro-Infusion System is a medical device used for mechanical thrombectomy in venous systems. It is primarily used by interventional radiologists and vascular specialists to treat patients with blood clots.

FDA Clearance Information

Pathway ? 510(k)
Number ? K053437 ↗
Decision Date ? January 6, 2006
Product Code ? NUI
Device Class ? Class 2
Evidence ? 35 studies

The Ekos Micro-Infusion System was cleared through the FDA 510k pathway on January 6, 2006. Manufactured by Ekos, it is classified as a Class 2 medical device under product code NUI.

What It Is

The Ekos Micro-Infusion System is designed to deliver targeted thrombolytic therapy directly to the site of a blood clot. It combines ultrasound technology with drug delivery to enhance the breakdown of clots. This system is particularly useful in treating deep vein thrombosis (DVT) and pulmonary embolism (PE), where rapid clot resolution is critical.

FDA-Cleared Indications

  • Infusion of thrombolytic medication into a blood clot in the peripheral vasculature.
  • Ultrasound-assisted delivery of thrombolytic therapy for treatment of venous thromboembolism, including deep vein thrombosis and pulmonary embolism.
  • Use by trained clinicians with compatible thrombolytic drugs and standard endovascular catheter techniques.

Clinical Applications

  • Catheter-directed thrombolytic treatment of selected lower-extremity deep vein thrombosis.
  • Ultrasound-assisted thrombolytic treatment of selected pulmonary embolism.
  • Targeted infusion of thrombolytic medication into an acute venous clot when systemic medication alone is not appropriate or sufficient.
  • Endovascular clot-treatment procedures performed in an interventional radiology, vascular, or catheterization laboratory.

Reported off-label uses

  • Ultrasound-assisted thrombolytic treatment of thrombosed dialysis grafts or fistulas.
  • Use in selected thrombosed venous stents or other peripheral venous segments outside the device's specific labeled indication.

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 is used with a compatible infusion catheter, ultrasound core, and prescribed thrombolytic medication; catheter size and treatment length must match the target vessel and clot.
  • Treatment requires fluoroscopic or other image guidance, anticoagulation and thrombolytic-management protocols, and monitoring for bleeding and recurrent thrombosis.
  • The system is not a substitute for anticoagulation, surgical thrombectomy, or other mechanical thrombectomy methods; treatment selection depends on clot location, symptoms, bleeding risk, and clinical urgency.
  • MRI safety depends on the specific catheter and system components. The device should be removed or managed according to the current manufacturer labeling before MRI.
  • Important contraindications and precautions include active bleeding, recent major surgery or intracranial bleeding, uncontrolled hypertension, allergy to the thrombolytic medication, and other standard contraindications to thrombolysis.

Related Literature

The Interventional Management of Stroke (IMS) III Trial investigated the efficacy of endovascular therapy in stroke management. Although specific details of the study are not provided, such trials typically evaluate the safety and effectiveness of devices like the Ekos system in dissolving clots. Limitations may include sample size and generalizability to broader patient populations.

Procedures that use this device

Linked Studies (20)

PubMed • 2026

Real-world clinical outcomes of EKOS catheter-directed thrombolysis versus systemic alteplase in acute pulmonary embolism: a retrospective cohort study.

Frontiers in pharmacology

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

Novel Phase Shift Microbubbles, MVT-101, Enhance Sonothrombolysis in a Porcine Model of Deep Vein Thrombosis.

Nanotheranostics

View Source →
PubMed • 2024

[Interventional therapy of pulmonary embolism - update].

Deutsche medizinische Wochenschrift (1946)

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

Initiating and imaging cavitation from infused echo contrast agents through the EkoSonic catheter.

Scientific reports

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

[Ultrasound-accelerated thrombolysis. Initial experience in patients with contraindications to systemic thrombolysis].

Revista medica del Instituto Mexicano del Seguro Social

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

Quantifying the Effect of Acoustic Parameters on Temporal and Spatial Cavitation Activity: Gauging Cavitation Dose.

Ultrasound in medicine & biology

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

Treatment With EkoSonic™ Endovascular System (EKOS®) of Massive Pulmonary Thrombosis Following Recovery From COVID-19 Infection.

Cureus

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

EkoSonic™ Endovascular System-Directed Thrombolysis in a Patient With COVID-19 Infection Presenting With Bilateral Large Pulmonary Embolism Causing Right Ventricular Strain: A Case Report.

Cureus

Case Report View Source →
PubMed • 2022

Analysis of pulmonary embolism patients treated with EkoSonic™ endovascular system.

Turk gogus kalp damar cerrahisi dergisi

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

Successful Thrombolysis of Acute Upper Limb Ischemia Using Ekosonic Endovascular System Ultrasound Catheter in a Patient With Atrial Fibrillation.

Cardiovascular revascularization medicine : including molecular interventions

Case Series View Source →
PubMed • 2022

Stability of alteplase for ultrasound-facilitated catheter-directed thrombolysis.

Blood advances

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

Massive pulmonary embolism in patients with extreme bleeding risk: a case series on the successful use of ultrasound-assisted, catheter directed thrombolysis in a district general hospital.

Journal of thrombosis and thrombolysis

Case Series View Source →
PubMed • 2022

EKOS™ Jena Experience: Safety, Feasibility, and Midterm Outcomes of Percutaneous Ultrasound-Assisted Catheter-Directed Thrombolysis in Patients with Intermediate-High-Risk or High-Risk Pulmonary Embolism.

Canadian respiratory journal

RCT|prospective|retrospective|case Series|other View Source →
PubMed • 2021

Cavitation Emissions Nucleated by Definity Infused through an EkoSonic Catheter in a Flow Phantom.

Ultrasound in medicine & biology

View Source →
PubMed • 2021

Hemodynamic Effects of Ultrasound-Assisted, Catheter-Directed, Very Low-Dose, Short-Time Duration Thrombolysis in Acute Intermediate-High Risk Pulmonary Embolism (from the EKOS-PL Study).

The American journal of cardiology

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

Ekosonic Endovascular System (EKOS) in a trauma patient with intracranial bleed, recent major surgery, and massive pulmonary embolus: A case report.

Radiology case reports

Case Report View Source →
PubMed • 2020

EkoSonic Thrombolysis as a Therapeutic Adjunct in Venous Occlusive Disease.

The International journal of angiology : official publication of the International College of Angiology, Inc

Retrospective|case Series View Source →
PubMed • 2020

The Role of EkoSonic Endovascular System or EKOS® in Pulmonary Embolism.

Cureus

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

EkoSonic® endovascular system and other catheter-directed treatment reperfusion strategies for acute pulmonary embolism: overview of efficacy and safety outcomes.

Expert review of medical devices

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

Real-World Outcomes of EKOS Ultrasound-Enhanced Catheter-Directed Thrombolysis for Acute Limb Ischemia.

Annals of vascular surgery

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

Frequently Asked Questions

What is the Ekos Micro-Infusion System used for?

It is used for the treatment of blood clots in the venous system, such as deep vein thrombosis and pulmonary embolism.

What specialties typically use this device?

Interventional radiologists and vascular surgeons commonly use this device.

What are the FDA-cleared indications?

The device is indicated for the treatment of venous thromboembolism, including deep vein thrombosis and pulmonary embolism.

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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