New heart surgery technique aims to stop AFib in its tracks
NCT ID NCT07312149
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a new technique called PWI-Box, which uses a device named GeminiS to isolate the pulmonary veins and treat atrial fibrillation (AF) during open-heart surgery. About 200 adults with AF who are already scheduled for heart surgery via sternotomy will take part. The main goal is to see if this approach reduces AF recurrence one year after surgery, as measured by a 24-hour heart monitor.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
GeminiS device for pulmonary vein isolation with posterior wall isolation (PWI-Box)
What this could lead to
If successful, this could offer a simpler, more reproducible way to treat atrial fibrillation during open-heart surgery, potentially reducing AF recurrence and stroke risk.
What could go wrong
This is an early-stage study (not yet recruiting) with 200 participants. The technique may not work as well as hoped, and surgery carries standard risks like infection or bleeding.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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.
Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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CHU de Nantes
Nantes, 44093, France
Contact Phone: •••-•••-•••• Email: •••••@•••••