MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION WallFlex? Duodenal; stent,metallic,expandable,duodenal

Model Number	M00565020
Medical Device Problem Codes	Premature Activation (1484); Difficult to Advance (2920)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/25/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported to boston scientific corporation that a wallflex esophageal stent was attempted to be implanted in the duodenum to treat a duodenal stricture during a stent placement for duodenal stricture procedure performed on (b)(6) 2026.It was reported that during procedure, the device would not fit down the pediatric colonoscope channel.Due to the tightness of the channel, the stent was inadvertently deployed in the channel.The stent was removed from the patient, and the procedure was completed using another of the same device.There is no patient complications reported as a result of the procedure.
Additional Manufacturer Narrative
Block h6: imdrf device code a150103 captures the reportable event of stent premature deployment.

• Brand Name: WallFlex? Duodenal
• Common Device Name: stent,metallic,expandable,duodenal
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 300 boston scientific way; marlborough MA 01752
• Manufacturer (Section G): Boston Scientific Corporation; ballybrit business park; galway H91 Y 868; EI H91 Y868
• Manufacturer Contact: christina lam ; 300 boston scientific way; marlborough, MA 01752 ; +1(914)571-6918
• MDR Report Key: 50803998
• Report Number: 3005099803-2026-03834
• Device Sequence Number: 12922570
• Product Code: MUM
• UDI-Device Identifier: 08714729456490
• UDI-Public: (01)08714729456490(17)270728(10)37066110
• Combination Product (Y/N): N
• Initial Reporter Country: AS
• PMA/510(K) Number: K201159
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 09/17/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: M00565020
• Device Catalogue Number: M00565020
• Device Lot Number: 0037066110
• 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: 08/25/2026
• Initial Report FDA Received Date: 09/17/2026
• Date Device Manufactured: 07/28/2025
• 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
• Patient Sex: Unknown