New mesh device could seal brain aneurysms, avoid surgery
NCT ID NCT06872684
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This trial tests a new device called the Surpass Elite with Guardian Flow Diverter for treating brain aneurysms that haven't ruptured. The device is a small mesh tube placed inside the artery to redirect blood flow and seal the aneurysm. About 183 adults aged 18-80 with specific types of aneurysms will be enrolled. The study will check if the device safely blocks the aneurysm and prevents strokes over 12 months.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Surpass Elite with Guardian Flow Diverter System (a mesh tube placed inside the artery to redirect blood flow away from the aneurysm)
- What this could lead to
- If successful, this device could offer a safer, less invasive way to treat brain aneurysms and prevent them from rupturing.
- What could go wrong
- This is a single-arm trial without a comparison group, so results may be less definitive. Risks include stroke or incomplete aneurysm closure.
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 183 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2025
- Expected to finish
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Jan 2031
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 to 80 years
- 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: 1. Age is ≥18 and ≤80 years at the time of consent 2. Has a single unruptured target intracranial aneurysm (IA) of any size with the following characteristics: 1. Is located on the internal carotid artery or its branches 2. Has a wide neck (wide neck typically defined as neck width ≥ 4 millimeter (mm), or dome to neck ratio ≤ 2.0) or no discernible neck 3. Aneurysm is either saccular or fusiform in nature 3. Has a parent vessel diameter ≥ 3.0 mm to ≤ 6.0 mm at the largest diameter 4. There is documented risk-benefit of endovascular treatment that outweighs the risks of intracranial aneurysm rupture during the subject's expected lifetime if left untreated. Exclusion Criteria: 1. Has an extradural target aneurysm 2. Has a target aneurysm in the posterior circulation 3. Perforator or branch vessel, inclusive of the posterior communicating artery, arises from the target aneurysm body or neck (branches or arteries must arise or connect from the parent vessel separate from the aneurysm or neck to not be excluded from trial) 4. Has a true bifurcation aneurysm, defined as an aneurysm (saccular or non-saccular) located at a point of vessel bifurcation 5. Has vessel characteristics, such as severe tortuosity (cavernous Internal Carotid Artery (cICA) Type IV1), stenosis (\>70%), or morphology that would preclude safe endovascular access or proper deployment of the trial device to the target aneurysm 6. Received previous treatment for the target aneurysm or parent artery where it would interfere with the placement or proper apposition of the device 7. Has a medical contraindication to trial or procedure related antiplatelet medications (aspirin, clopidogrel/Plavix, ticagrelor, and heparin), local or general anesthesia, or life-threatening allergy to contrast dye 8. Has a known severe allergy to nickel, chromium cobalt, tungsten, or platinum 9. Patients with heparin hypersensitivity, including patients with a previous incident of Heparin-Induced Thrombocytopenia (HIT). 10. Modified Rankin Score (mRS) assessment is ≥ 3 at pre-procedure exam 11. Presence of unstable neurological deficit (i.e., worsening of clinical condition in the last 30 days prior to the index procedure) 12. Subarachnoid hemorrhage occurred within 30 days prior to the index procedure 13. Major surgery (including previous intracranial implant) either occurred within 30 days prior to the index procedure date or is planned to occur within 120 days following the index procedure date 14. Has more than one intracranial aneurysm (IA) that requires treatment within 12 months after the index procedure 15. Received previous intracranial implant associated with the symptomatic or vascular distribution within the past 84 days prior to treatment date 16. Chronic anticoagulation therapy is ongoing or known coagulopathy exists 17. Has atrial fibrillation with or without pacemaker. 18. Has other known serious concurrent medical conditions such as cardiovascular disease (including recent myocardial infarction \[\<12 weeks\], symptomatic congestive heart failure, or carotid stenosis), kidney failure (\>2.0 mg/dl serum creatinine), pulmonary disease, uncontrolled diabetes, progressive neurologic disorders, terminal cancer, vasculitis, high risk of ischemic stroke or recent stroke 19. Has acute life-threatening illness (e.g., acute kidney or heart failure) other than the neurological disease to be treated in this trial 20. Evidence of active infection at the time of treatment 21. Life expectancy is less than 5 years due to other illness or condition (in addition to an intracranial aneurysm) 22. Unable to comply with the trial follow up requirements due to conditions such as dementia or psychiatric problems, active substance abuse, or history of non-compliance with medical advice, as determined by the investigator 23. Pregnant or breast- feeding women or women who wish to become pregnant during the length of trial participation 24. Presence of intracranial mass (tumor, except meningioma, abscess, or other infection), non-treated arteriovenous malformation (AVM) in the territory of the target aneurysm 25. Enrollment in another study involving an investigational product that could confound the outcomes of this trial
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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
10 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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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Carondelet St. Joseph's Hospital
RECRUITINGTucson, Arizona, 85711, United States
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Cleveland Clinic
RECRUITINGCleveland, Ohio, 44195, United States
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Lahey Hospital and Medical Center
RECRUITINGBurlington, Massachusetts, 01803, United States
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Lyerly Neurosurgery, an Affiliate of Baptist
RECRUITINGJacksonville, Florida, 32207, United States
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Mount Sinai Health System
RECRUITINGNew York, New York, 10029, United States
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Oregon Health & Science University
RECRUITINGPortland, Oregon, 97239, United States
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Stanford University School of Medicine
RECRUITINGPalo Alto, California, 94304, United States
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Stony Brook University Hospital
RECRUITINGStony Brook, New York, 11794, United States
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University of California Davis Health
RECRUITINGDavis, California, 95616, United States
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University of Kansas Medical Center
RECRUITINGKansas City, Kansas, 66160, United States
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Other studies related to the condition(s) this trial covers.
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