MAUDE Adverse Event Report: W. L. GORE & ASSOCIATES, INC. GORE® DRYSEAL FLEX INTRODUCER SHEATH; INTRODUCER, CATHETER

Catalog Number	DSF1245
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Code	Ischemia Stroke (4418)
Date of Event	10/31/2025
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
H6: a review of the manufacturing records for the device verified that the lot met all pre-release specifications.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
The following information was reported to gore: on (b)(6) 2025, this patient underwent an endovascular treatment for thoracoabdominal aortic aneurysm using gore® excluder® thoracoabdominal branch endoprosthesis (tambe).On the same day after the procedure, the patient showed delayed recovery from general anesthesia and subsequently developed symptoms such as fatigue and difficulty speaking.Cerebral infarction was confirmed.At the time of this reporting, rehabilitation was ongoing, and the patient¿s condition had improved; however, he was still hospitalized.The reporting physician commented as follows: since transcatheter aortic valve implantation (tavi) was performed three days prior to this procedure (on (b)(6) 2025), it is unclear whether this event was caused by the tambe procedure.However, as a gore® dryseal flex introducer sheath was inserted via the right axillary artery over the origins of the right vertebral artery and common carotid artery, and complex device manipulation was performed during the procedure, it is possible that the sheath contributed to the onset of cerebral infarction.

• Brand Name: GORE® DRYSEAL FLEX INTRODUCER SHEATH
• Common Device Name: INTRODUCER, CATHETER
• Manufacturer (Section D): W. L. GORE & ASSOCIATES, INC.; 1505 n. fourth street; flagstaff AZ 86004
• Manufacturer (Section G): MEDICAL PHOENIX 1 B/P; 32360 n. north valley parkway; phoenix AZ 85085
• Manufacturer Contact: tatsuya sato ; 1505 n. fourth street; flagstaff, AZ 86004 ; 9285263030
• MDR Report Key: 23677419
• Report Number: 3007284313-2025-04411
• Device Sequence Number: 10260176
• Product Code: DYB
• UDI-Device Identifier: 00733132628117
• UDI-Public: (01)00733132628117(17)270730
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K160254
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 12/01/2025

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 Catalogue Number: DSF1245
• 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: 11/07/2025
• Initial Report FDA Received Date: 11/30/2025
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 08/29/2025
• 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: Required Intervention
• Patient Age: 83 YR
• Patient Sex: Male