New Clot-Busting device could offer quick relief for lung blockages
NCT ID NCT06672510
First seen Jun 26, 2026 · Last updated Sep 01, 2026 · Updated 3 times
Summary
This study is testing a device called the Akura Thrombectomy System, which is threaded through a blood vessel to mechanically remove clots from the lung arteries. It involves 118 adults with acute pulmonary embolism (symptoms for 14 days or less) who have a clot in a main or lobar artery and signs of heart strain. The goal is to see if the device safely restores blood flow and reduces strain on the heart.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Akura Thrombectomy System (a catheter-based device to mechanically remove blood clots)
- What this could lead to
- If it works, this could provide a new, less invasive option to quickly remove dangerous clots from the lungs, potentially reducing heart strain and improving survival.
- What could go wrong
- This is an early-stage, single-arm study with only 118 participants, so results may not apply to everyone. Risks include bleeding, vessel injury, or the device not working as expected.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 118 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2025
- Expected to finish
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Sep 2028
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * The patient is 18 years of age or older and deemed medically eligible for interventional procedure, per institutional guidelines and clinical judgement * Clinical signs, symptoms and presentation consistent with acute PE * PE symptom duration ≤ 14 days * CTA evidence of proximal PE (filling defect in at least one main or lobar pulmonary artery) * CTA evidence of RV/LV ratio of ≥ 0.9 (NOTE: Enrollment qualification assessment is based on the Investigator's interpretation of RV/LV ratio at baseline) * Systolic BP ≥ 90 mmHg (initial SBP may be \< 90 mmHg but ≥ 80 mmHg if the pressure recovers with volume resuscitation) * Stable HR \< 130 BPM prior to the procedure Exclusion Criteria: * Prior PE \<180 days from index procedure * Thrombolytic use within 30 days prior to baseline CTA * Pulmonary hypertension with peak pulmonary arterial pressure (PAP) \> 70 mmHg by right heart catheterization * Vasopressor requirement after fluids to keep pressure at ≥ 90 mmHg * FiO2 requirement \> 40% or \> 6 LPM (to keep oxygen saturation \> 90%) * Hematocrit \< 28% (Note: hematocrit required within 6 hrs. of index procedure) * Platelets \< 100,000/μL * eGFR \<30 ml/min per 1.73 m2 * International normalized ratio (INR) \> 3 * Major trauma injury severity score (ISS) \> 15 * Presence of intracardiac lead in right ventricle or atrium placed ≤ 6 months of enrollment * Cardiovascular or pulmonary surgery within the last 7 days * Actively progressing cancer treated by chemotherapeutics * Known bleeding diathesis or coagulation disorder * Left bundle branch block * History of severe or chronic pulmonary arterial hypertension * History of chronic left heart disease with left ventricular ejection fraction ≤ 30% * History of uncompensated heart failure. * History of underlying lung disease that is oxygen dependent * History of chest irradiation * History of heparin-induced thrombocytopenia (HIT) * Contraindication to systemic or therapeutic doses of anticoagulants * Known anaphylactic reaction to radiographic contrast agents that cannot be pretreated * Known residual iliac deep vein thrombosis (DVT), inferior vena cava (IVC) clot or clot in transit (right atrium and/or right ventricle) * CTA imaging or other evidence that suggest, in the opinion of the investigator, the Subject is not appropriate for mechanical thrombectomy intervention (e.g. inability to navigate to target location, predominantly chronic clot or non-clot embolus) * Life expectancy \< 90 days, as determined by investigator (e.g., stage 4 cancer, frailty or severe COVID infections) * Female who is pregnant or nursing * Current participation in another investigational drug or device treatment study
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
7 sites. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Cumc/Nyph
New York, New York, 10032, United States
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Hartford Healthcare
Hartford, Connecticut, 06102, United States
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Los Robles Regional Medical Center
Thousand Oaks, California, 91360, United States
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Manatee Memorial Hospital / Nova Clinical Research Center
Bradenton, Florida, 32408, United States
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ProMedica Toledo Hospital
Toledo, Ohio, 43606, United States
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Tallahassee Memorial Hospital
Tallahassee, Florida, 32308, United States
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Tristar Centennial Medical Center
Nashville, Tennessee, 37203, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- AI plus ultrasound could catch heart and lung decline before it turns critical
- Can a Clot-Removing device ease acute pulmonary embolism?
- Can a catheter device clear lung clots and ease heart strain?
- Which blood thinner is safer for lung clots? a Head-to-Head test
- Can a simple electrical scan spot dangerous lung clots without radiation?