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New MRI-Guided catheter aims to zap heart rhythm problem

NCT ID NCT05904548

Disease control Sponsor: Imricor Medical Systems Source: ClinicalTrials.gov ↗

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study is testing a new catheter that uses real-time MRI to guide treatment for a common heart rhythm problem called type I atrial flutter. About 91 adults who need this procedure will receive radiofrequency ablation to block abnormal electrical signals. The main goals are to see if the procedure is safe and effectively restores normal heart rhythm.

What this could mean

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

Active substance
RF ablation catheter
What this could lead to
If it works, this could offer a more precise, safer way to treat atrial flutter using real-time MRI guidance.
What could go wrong
This is an early-stage, single-arm trial with only 91 participants. Risks include serious heart complications, and it may not work for everyone.

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 91 people

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

Started

Jun 2024

Expected to finish

Dec 2026

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 years and older

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: * Patient indicated for type I atrial flutter ablations with at least 1 documented episode of type I atrial flutter within 6 months (180 days) of enrollment * Patient 18 years and older Exclusion Criteria: * Contraindications for MRI procedures * Patients who cannot have anti-arrhythmic drugs (class I or class III) prescribed for the treatment of type I atrial flutter stopped on the day of the procedure * Previous CTI ablation procedures * Myocardial infarction within 60 days of enrollment * Current unstable angina * Cardiac surgery within 90 days of enrollment * Any cerebral ischemic event (including transient ischemic attacks) within 6 months (180 days) of enrollment * Thrombocytosis or thrombocytopenia * Contraindication to anticoagulation therapy * Currently documented intracardiac thrombus or myxoma * Implantation of permanent leads of an implantable device in or through the right atrium within 90 days of enrollment * Prosthetic valve through which the catheter must pass * Interatrial baffle or patch through which the catheter must pass * Moderate or severe tricuspid valve regurgitation or stenosis * Uncompensated congestive heart failure * Active systemic infection * Pregnancy or if subject plans to become pregnant during the trial * Uncontrolled hyperthyroidism * Any other significant uncontrolled or unstable medical condition * Enrollment in any concurrent study without Imricor written approval * Life expectancy of less than or equal to 2 years (730 days) per physician opinion

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Conditions

The condition(s) this trial relates to.

atrial flutter

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Atrial flutter typical

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    6 sites in 4 countries. 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

  • Amsterdam University Medical Center (AUMC)

    RECRUITING

    Amsterdam, Netherlands

  • Johns Hopkins University (JHU)

    RECRUITING

    Baltimore, Maryland, 21218, United States

  • University Hospital of Vaud (CHUV)

    RECRUITING

    Lausanne, 1011, Switzerland

  • University of Virginia (UVA)

    NOT_YET_RECRUITING

    Charlottesville, Virginia, 22903, United States

  • Virginia Commonwealth University

    NOT_YET_RECRUITING

    Richmond, Virginia, 23284, United States

  • l'institut Cardiologique Paris Sud (ICPS)

    RECRUITING

    Massy, 91300, France

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