MAUDE Adverse Event Report: W. L. GORE & ASSOCIATES, INC. GORE® TAG® THORACIC BRANCH ENDOPROSTHESIS; SYSTEM, ENDOVASCULAR GRAFT, AORTIC ANEURYSM TREATMENT

Catalog Number	TSB121706A
Medical Device Problem Code	Insufficient Device Problem Information (3190)
Health Effect - Clinical Code	Aneurysm expansion (4597)
Date of Event	10/18/2024
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
As it is unknown which device is directly implicated in this aneurysm enlargement event, the following devices (same device family) will also be included in this report: catalog #tsb121706a/ serial #(b)(6)/ udi # (b)(4) catalog # tac124015c serial #(b)(6), udi #(b)(4).H6: code c21 - results pending completion of product history review.H6: code c20 - the device remains implanted and, therefore, was not available for direct analysis by gore.H6: code a26- used to capture insufficient information available to determine if gore device contributed to aneurysm enlargement.C1.Cbas® heparin surface incorporates carmeda heparin manufactured from heparin sodium api, which is covalently bound to the device surface and is essentially non-eluting.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 have not 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
The following information was reported to gore through the pivotal study for the gore® ascending stent graft in the treatment of lesions of the ascending aorta (asg device): on (b)(6) 2024, the patient was implanted with gore® tag® thoracic branch endoprosthesis (tbe) and gore® tag® conformable thoracic stent graft with active control.On (b)(6) 2024, during a 6-month follow-up ct imaging, a greater than 5mm aneurysm enlargement was observed from both the site (baseline: 54.8mm, 6 month imaging: 82mm) and the core lab (baseline 70mm, 6 month imaging: 81mm).As per medrio database, the area of aneurysm enlargement is unknown.
Additional Manufacturer Narrative
Updated section g3/g4, h1, h2, h6, and h10.As it is unknown which device is directly implicated in this aneurysm enlargement event, the following devices (same device family) will also be included in this report: catalog #tsb121706a/serial #(b)(6)/udi #(b)(4).Catalog # tac124015c/serial #(b)(6)/udi #(b)(4).H6: code c19 - a review of the manufacturing records indicated the lot met all pre-release manufacturing specifications.As the device was not accessible, the product history review (phr) review was the extend of the investigation.No device problem was found per review of these records.

• Brand Name: GORE® TAG® THORACIC BRANCH ENDOPROSTHESIS
• Common Device Name: SYSTEM, ENDOVASCULAR GRAFT, AORTIC ANEURYSM TREATMENT
• Manufacturer (Section D): W. L. GORE & ASSOCIATES, INC.; 1505 n. fourth street; flagstaff AZ 86004
• Manufacturer (Section G): MEDICAL WOODY SPRINGS B/P; 3450 w. kiltie lane; flagstaff AZ 86005
• Manufacturer Contact: lillian espinoza ; 1505 n. fourth street; flagstaff, AZ 86004 ; 9285263030
• MDR Report Key: 23469648
• Report Number: 2017233-2025-06776
• Device Sequence Number: 18408786
• Product Code: MIH
• UDI-Device Identifier: 00733132654413
• UDI-Public: (01)00733132654413(17)260307
• Combination Product (Y/N): Y
• Initial Reporter State: MD
• Initial Reporter Country: US
• PMA/510(K) Number: P210032
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2024
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Study
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 11/26/2025

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 Expiration Date: 03/07/2026
• Device Catalogue Number: TSB121706A
• 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: 10/09/2025
• Supplement Date Received by Manufacturer: 11/25/2025
• Initial Report FDA Received Date: 11/04/2025
• Supplement Report FDA Received Date: 11/26/2025
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 03/09/2023
• Is the Device Labeled for Single Use? (Y/N): Yes
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Other
• Patient Age: 82 YR
• Patient Sex: Female
• Patient Weight: 90 KG