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Introduction: Endoscopic techniques are now considered the first-line approach for the management of bariatric surgery-related fistulas. The off-label use of cardiac septal defect occluders (CSDO) is an emerging technique that has demonstrated favorable outcomes for the closure of extravascular defects, including gastrointestinal (GI) disruptions. Previous case reports have reported similar results with the CSDO Amplatzer™ for the management of GI disruptions following bariatric surgery. However, the use of similar alternative devices for this purpose has not yet been described., Case Presentation: This case report presents the first reported use of the Occlutech® CSDO for the treatment of a chronic gastrocutaneous fistula after bariatric revisional surgery. Despite apparent initial success - no extravasation of contrast material through the device in the contrast study after the CSDO placement - fistula closure failed due to partial dislodgement of the device. The placement of a second device between the discs of the former one ultimately sealed the fistulous orifice., Discussion: In chronic GI fistulas, the mature tract is often not liable to the application of standard endoscopic methods, leading to failed closure attempts. A new application of Occlutech® CSDO can obviate the clinical burden of a high-risk laparotomy in these cases. Appropriate endoscopic equipment as well as the involvement of a multidisciplinary team are prime conditions to ensure successful patient outcomes., Competing Interests: Dr. Nelson Coelho is a consultant for Boston Scientific and Dr. João Luiz Manica is a proctor for Tecmedic. The other authors have no financial conflicts of interest to disclose., (Copyright © 2022 by The Author(s). Published by S. Karger AG, Basel.)