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New heart implant aims to cut stroke risk without blood thinners

NCT ID NCT07262255

Recruiting now Disease control Sponsor: Boston Scientific Corporation Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Aug 14, 2026 · Updated 6 times

Summary

This study is tracking 1000 people with atrial fibrillation who receive the WATCHMAN FLX Pro device, a small implant that closes off a part of the heart to prevent blood clots from causing strokes. The goal is to see how safe and effective the device is in everyday medical practice, especially for patients who cannot take long-term blood thinners. Researchers will monitor for serious events like stroke, bleeding, or death within a week of the procedure.

What this could mean

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

Active substance
WATCHMAN FLX Pro device (a left atrial appendage closure implant)
What this could lead to
If successful, this registry could confirm that the device safely reduces stroke risk and bleeding events in people with atrial fibrillation who cannot take blood thinners.
What could go wrong
This is an observational registry, not a controlled trial, so results may not prove cause and effect. There are procedural risks like bleeding, stroke, or need for emergency surgery.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation

As listed by the trial registrant

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

LEFT ATRIAL APPENDAGE CLOSURE NON-VALVULAR ATRIAL FIBRILLATION (AF)

Contacts and locations

Locations

  • Aarhus University Hospital

    RECRUITING

    Aarhus, 8200, Denmark

  • Asklepios Klinik Altona

    RECRUITING

    Hamburg, 22763, Germany

  • Asklepios Klinik Nord Heidberg

    RECRUITING

    Hamburg, 22417, Germany

  • Asklepios Klinik Saint Georg

    RECRUITING

    Hamburg, 20099, Germany

  • Azienda Ospedaliero Universitaria Policlinico "G. Rodolico-San Marco

    RECRUITING

    Catania, 95123, Italy

  • Centro Cardiologico Monzino

    RECRUITING

    Milan, 20138, Italy

  • Charite, Campus Benjamin Franklin

    RECRUITING

    Berlin, 12203, Germany

  • Clinica Universidad de Navarra

    RECRUITING

    Pamplona, 31008, Spain

  • Complejo Hospitalario Universitario de Pontevedra

    RECRUITING

    Pontevedra, 36001, Spain

  • Herz-und Diabeteszentrum Nordrhein-Westfalen

    RECRUITING

    Bad Oeynhausen, 32545, Germany

  • Hospital Clinico Salamanca

    RECRUITING

    Salamanca, 37007, Spain

  • Hospital de Leon

    RECRUITING

    León, 24071, Spain

  • INSELSPITAL - Universitätsspital Bern

    RECRUITING

    Bern, CH-3010, Switzerland

  • Kath Krankenhaus St Johann Nepomuk

    RECRUITING

    Erfurt, 99097, Germany

  • Ospedale Sacro Cuore Don Calabria

    RECRUITING

    Verona, 37126, Italy

  • Rigshospitalet Copenhagen

    RECRUITING

    Copenhagen, 2100, Denmark

  • Universitaetsklinikum Schleswig-Holstein

    RECRUITING

    Lübeck, 23582, Germany

  • University Hospital Basel

    RECRUITING

    Basel, 4031, Switzerland

  • Uniwersytecki Szpital Kliniczny w Poznaniu

    RECRUITING

    Poznan, 61-848, Poland

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