MAUDE Adverse Event Report: W. L. GORE & ASSOCIATES, INC. GORE® CARDIOFORM ASD OCCLUDER; TRANSCATHETER SEPTAL OCCLUDER

Catalog Number	ASD32A
Medical Device Problem Code	Patient-Device Incompatibility (2682)
Health Effect - Clinical Code	Arrhythmia (1721)
Date of Event	09/08/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
The gore® cardioform septal occluder instructions for use list arrhythmia, such as atrial fibrillation or flutter, requiring treatment as a potential device or procedure related adverse event.W.L.Gore & associates, inc.(gore) is submitting this report to comply with 21 c.F.R.Part 803, the medical device reporting regulation.This report is based upon information obtained by gore, which the company may not have been able to fully investigate or verify prior to the date the report was required by the fda.Blank fields present on this report include required fields and fields determined to be not applicable.Blank required fields indicate that the information was not provided, was deemed unavailable or was not applicable.This report does not constitute an admission or a conclusion by fda, gore, or its associates that the device, gore or its associates caused or contributed to the event described in the report.In particular, this report does not constitute a legal admission by anyone that the product described in this report has any defects or has malfunctioned, as defined from a legal standpoint.These words are included in the report and are fixed items for selection created by the fda, to categorize the type of event solely for the purpose of reporting pursuant to part 803.This statement should be included with any information or report disclosed to the public under the freedom of information act.
Event or Problem Description
It was reported that an 11-year-old female underwent atrial septal defect closure on (b)(6), 2025, using a 32 mm gore® cardioform asd occluder.Postoperatively, the patient began experiencing dizziness and near-syncope, which have progressively increased in frequency.A first-degree atrioventricular (av) block was noted post-procedure but has since resolved.The patient was subsequently hospitalized and evaluated for mri without contrast.Concerns regarding mri safety, including potential device movement and/or heating, were raised by the patient¿s guardians.As a result, a decision was made to forego mri evaluation on (b)(6), 2026.The first-degree av block was treated with a short course of steroids.

• Brand Name: GORE® CARDIOFORM ASD OCCLUDER
• Common Device Name: TRANSCATHETER SEPTAL OCCLUDER
• Manufacturer (Section D): W. L. GORE & ASSOCIATES, INC.; 1505 n. fourth street; flagstaff AZ 86004
• Manufacturer (Section G): KENDRICK PEAK MPD B/P; 4250 w. kiltie lane; flagstaff AZ 86005
• Manufacturer Contact: alexandrea holtsoi ; 1505 n. fourth street; flagstaff, AZ 86004 ; 9285263030
• MDR Report Key: 24915143
• Report Number: 2017233-2026-07398
• Device Sequence Number: 15921268
• Product Code: MLV
• UDI-Device Identifier: 00733132636495
• UDI-Public: (01)00733132636495(17)280326
• Combination Product (Y/N): N
• Initial Reporter State: SC
• Initial Reporter Country: US
• PMA/510(K) Number: P050006
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 04/17/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Operator of Device: Health Professional
• Device Catalogue Number: ASD32A
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 04/01/2026
• Initial Report FDA Received Date: 04/17/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 03/28/2025
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Age: 11 YR
• Patient Sex: Female
• Patient Weight: 29 KG