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New device aims to seal brain aneurysms without surgery

NCT ID NCT06693011

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This clinical trial is testing a device called the Contour Neurovascular System for people with wide-necked brain aneurysms. The device is placed inside the aneurysm to block blood flow and prevent it from rupturing. The study will enroll 250 participants and follow them for two years to see if the treatment is safe and effective.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Contour Neurovascular System (a device placed inside the aneurysm to block blood flow)
What this could lead to
If successful, this device could offer a safe and effective way to treat wide-necked brain aneurysms without open surgery, reducing the risk of rupture or stroke.
What could go wrong
This is an ongoing study with no results yet. The device may not work for all aneurysm shapes, and risks include stroke, bleeding, or the need for additional treatment.

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

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

About 250 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2025

Expected to finish

Jan 2030

An estimate. End dates often move.

Lead sponsor

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

18 to 75 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Patient is 18-75 years of age at the time of screening. 2. Patient has a single ruptured or unruptured IA requiring treatment. If the patient has an additional IA requiring treatment, the additional IA must not require treatment within 60 days after the index procedure. 3. The target IA must have the following characteristics: * Saccular morphology * Located at a bifurcation in the anterior or posterior circulation * Aneurysm neck diameter between 2 and 10 mm and aneurysm equatorial diameter between 2 and 10.5 mm * Wide-necked, defined as neck size ≥ 4 mm or a dome/neck ratio \< 2 4. Patient may be treated with Contour without the use of additional implanted devices. 5. Patient is able to comply with all aspects of the screening, evaluation, treatment, and the post-procedure follow-up schedule. 6. Patient or legally authorized representative has signed and dated an institutional review board (IRB)/Ethics Committee (EC)-approved written informed consent prior to initiation of any study procedures. FOR PATIENTS WITH UNRUPTURED ANEURYSM 7. Patient meets the criteria outlined in the "Guidelines for the Management of Patients With Unruptured Intracranial Aneurysms" as published by the AHA/ASA\^6 FOR PATIENTS WITH RUPTURED ANEURYSM 8. Patient meets the criteria outlined in the "Guidelines for the Management of Aneurysmal Subarachnoid Hemorrhage: A Guideline for Healthcare Professionals from the American Heart Association/American Stroke Association" as published by the AHA/ASA.\^6 9. Patient must be neurologically stable with Hunt \& Hess Score of I, II or III. (\^6: 6 https://www.ahajournals.org/doi/full/10.1161/STR.0000000000000070) Exclusion Criteria: 1. Anatomy or physiology considered unsuitable for endovascular treatment with the Contour device by the implanting physician and/or the Patient Selection Committee 2. Target IA contains other devices/implants (e.g., coils) that could interfere with the correct placement of the Contour device 3. Subject has a known, untreatable hypersensitivity to contrast dye, iodine, or any component of the treatment device. 4. Contraindication to anticoagulants or anti-platelet medications 5. Stenosis of the target IA's parent vessel is \>50% 6. Anticoagulation medications (e.g., warfarin) that cannot be discontinued 7. Acute / chronic renal failure (unless on dialysis) or creatinine \> 2.00 mg/dl or \> 182 μmol/L 8. Vascular disease or other vascular anomaly that precluded the necessary access to the aneurysm for use of the study device. 9. Clinical, angiographic or computed tomography (CT) evidence of vasospasm, vasculitis, an intracranial tumor (except small meningioma) or any other intracranial vascular malformations on presentation. 10. Conditions placing them at high risk for ischemic stroke or had exhibited ischemic symptoms such as transient ischemic attacks, minor strokes, or stroke-in-evolution within the prior 60-days. 11. Any circulatory, neurovascular, cardiovascular, or neurologic conditions that can result in unstable neurological symptoms (e.g., multiple sclerosis, established seizure disorder). 12. Modified Rankin Scale (mRS) score ≥ 2 prior to presentation or rupture (as applicable). 13. Subarachnoid hemorrhage (SAH) from a non-index aneurysm or any other intracranial hemorrhage within 90 days. 14. Physical, neurologic or psychiatric conditions which precluded his/her ability to comply with all aspects of the screening, evaluation, treatment, and the post-procedure follow-up schedule. 15. Pregnant, breastfeeding or planning pregnancy in the next 2 years 16. Subject is enrolled in another device or drug study in which participation could confound study results. 17. Life expectancy of less than 2 years due to an illness or condition other than the index intracranial aneurysm.

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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.

  1. The places running it

    9 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Advocate Aurora Health

    RECRUITING

    Park Ridge, Illinois, 60068, United States

  • Medical University of South Carolina

    RECRUITING

    Charleston, South Carolina, 29425, United States

  • NC Heart and Vascular Research LLC

    RECRUITING

    Raleigh, North Carolina, 27607, United States

  • Stony Brook University

    RECRUITING

    Stony Brook, New York, 11794, United States

  • Swedish Neuroscience Institute

    RECRUITING

    Seattle, Washington, 98122, United States

  • Thomas Jefferson University

    RECRUITING

    Philadelphia, Pennsylvania, 19107, United States

  • University at Buffalo Neurosurgery

    RECRUITING

    Buffalo, New York, 14203, United States

  • University of Kansas Medical Center

    RECRUITING

    Kansas City, Kansas, 66160, United States

  • University of Pennsylvania

    RECRUITING

    Philadelphia, Pennsylvania, 19104, United States

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