Evaluating the long-term safety and effectiveness of the WEB device for treating wide neck bifurcation intracranial aneurysms
Official title: Post-Approval Study - Post-Market Surveillance Study to Evaluate the Long-Term Safety and Effectiveness of the WEB Device
Run by Microvention-Terumo, Inc. · NCT04839705 · Data updated 2026-11-12
This study is testing if the WEB device is a safe and effective way to treat wide neck bifurcation brain aneurysms in adults over the long term.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 200 (estimated) |
| Sponsor | Microvention-Terumo, Inc. Industry-sponsored |
| Locations | 29 sites (Hollywood, Florida and 28 other locations) |
| Status | Recruiting |
| Started | August 24, 2022 |
| Main results expected | May 8, 2027 |
| Study ends | May 7, 2031 |
| Registry record updated | November 10, 2026 |
| Trial ID | NCT04839705 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are adults aged 18 and older with a single ruptured or unruptured intracranial aneurysm that requires treatment.
✕Probably not a fit
Patients with aneurysms unsuitable for endovascular treatment or those with recent ischemic symptoms may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This interventional study aims to assess the long-term safety and effectiveness of the WEB device in treating wide neck bifurcation intracranial aneurysms in adult patients. It is a prospective, multicenter, single-arm study that will evaluate the adequacy of aneurysm occlusion one year after treatment, as determined by a core laboratory. Participants will include adults with either ruptured or unruptured aneurysms requiring treatment, and they will be monitored for safety and effectiveness outcomes over time.
Why it matters
Potential benefit: If successful, this study could provide a safer and more effective treatment option for patients with wide neck bifurcation intracranial aneurysms.
How similar studies have gone: Other studies have shown promising results with similar endovascular approaches, indicating potential for success in this study.
Who can join: the full rules
Show full inclusion / exclusion criteria
Key Inclusion Criteria: * Patient must be ≥ 18 at the time of screening * Patient must have a single ruptured or unruptured IA requiring treatment * Patient must sign and date an IRB-approved written informed consent prior to initiation of any study procedures Key Exclusion Criteria: * Patient has an IA with characteristics unsuitable for endovascular treatment * Patient has conditions placing them at high risk for ischemic stroke or has exhibited ischemic symptoms such as transient ischemic attacks, minor strokes, or stroke-in-evolution within the prior 30 days * Patient has had an SAH from a non-index IA or any other intracranial hemorrhage within 90 days * Patient's index IA was previously treated * Patient is pregnant
Where it's running
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Memorial Health Systems
Hollywood, Florida, United States Recruiting -
Orlando Health Neuroscience Institute
Orlando, Florida, United States Recruiting -
The Queen's Medical Center Neuroscience Institute
Honolulu, Hawaii, United States Recruiting -
University of Iowa Hospitals and Clinics
Iowa City, Iowa, United States Recruiting -
University of Kansas Health System
Kansas City, Kansas, United States Recruiting -
Baptist Health Systems
Lexington, Kentucky, United States Recruiting
Show 23 more locations
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University of Kentucky, Department of Neurosurgery
Lexington, Kentucky, United States Recruiting -
Norton Healthcare
Louisville, Kentucky, United States Recruiting -
LSU Health Sciences Center at Shreveport
Shreveport, Louisiana, United States Recruiting -
Johns Hopkins University
Baltimore, Maryland, United States Recruiting -
Massachusetts General Brigham Incorporated
Boston, Massachusetts, United States Recruiting -
UMass Memorial Health
Worcester, Massachusetts, United States Recruiting -
Abbott Northwestern Hospital Allina Health
Minneapolis, Minnesota, United States Recruiting -
The Washington University
St Louis, Missouri, United States Recruiting -
Albany Medical Center
Albany, New York, United States Recruiting -
University of Buffalo
Buffalo, New York, United States Recruiting -
Northshore University Hospital/Northwell Health
Manhasset, New York, United States Recruiting -
SUNY Stony Brook
Stony Brook, New York, United States Recruiting -
Montefiore Medical Center
The Bronx, New York, United States Recruiting -
Ohio State University
Columbus, Ohio, United States Recruiting -
OhioHealth Research Institute
Columbus, Ohio, United States Recruiting -
The Toledo Hospital d/b/a ProMedica Toledo Hospital
Toledo, Ohio, United States Recruiting -
University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, United States Recruiting -
University of Pennsylvania Health Systems
Philadelphia, Pennsylvania, United States Recruiting -
Thomas Jefferson University Hospital
Philadelphia, Pennsylvania, United States Recruiting -
Semmes Murphey
Memphis, Tennessee, United States Recruiting -
West Virginia University
Morgantown, West Virginia, United States Recruiting -
University of Maryland, Baltimore
Baltimore, Maryland, United States Withdrawn -
Duke University
Durham, North Carolina, United States Withdrawn
Study contacts
- Principal investigator: David Fiorella, MD — Stony Brook University, Stony Brook NY
- Study coordinator: Robert Gash
- Email: robert.gash@terumo.com
- Phone: 908-914-1045
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Comparing WEB and other treatments for ruptured aneurysms
This study is testing whether a new device called WEB works better than other treatments for people with ruptured brain aneurysms.
-
Collecting real-life data on endovascular treatments for brain aneurysms
This study is collecting real-life information on how safe and effective a specific type of device is for treating brain aneurysms in patients.
-
Real-world outcomes of MicroVention devices for intracranial aneurysm treatment
This project collects real-world data to see how well commercially available MicroVention devices work for treating brain aneurysms in patients treated by their doctors.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.