MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION ACCOLADE? EL DR; Implantable Pulse Generator, Pacemaker (Non-Crt)

Model Number	L321
Medical Device Problem Code	Nonstandard Device (1420)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	11/14/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that this pacemaker was returned with no reported product performance issues or adverse patient effects.Analysis completed in our post market quality assurance laboratory identified a product performance issue.No adverse patient effects were reported.
Additional Manufacturer Narrative
If pertinent information is provided in the future, a supplemental report will be submitted.Upon receipt at our post market quality assurance laboratory, this device was thoroughly inspected and analyzed.A high current drain was detected, but the battery still supported full device function.Detailed analysis confirmed the identified high current drain was a result of compromised capacitors.This resulted in the observed premature battery depletion.It was determined that the capacitors were compromised due to the presence of excess hydrogen in the device case.No adverse patient effects were reported.This particular device is included in the hydrogen induced premature depletion advisory population.A review of the device history record (dhr) was performed.The review of the dhr identified that there were no process related non-conformances, scrap, or rework performed during the production that could explain the event.The reviews ensure each device meets specification prior to release for use.There is no indication the device manufacturing process contributed to the reported complaint.Based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of cause traced to component failure.

• Brand Name: ACCOLADE? EL DR
• Common Device Name: Implantable Pulse Generator, Pacemaker (Non-Crt)
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 4100 hamline avenue north; saint paul MN 55112
• Manufacturer (Section G): Boston Scientific Corporation; cashel road; clonmel E91 T 862; EI E91 T862
• Manufacturer Contact: mark mischke ; 4100 hamline avenue north; saint paul, MN 55112 ; +1(612)875-7234
• MDR Report Key: 50876651
• Report Number: 2124215-2026-50838
• Device Sequence Number: 21511873
• Product Code: LWP
• UDI-Device Identifier: 00802526559242
• UDI-Public: (01)00802526559242(17)180120
• Combination Product (Y/N): N
• Initial Reporter State: MA
• Initial Reporter Country: US
• PMA/510(K) Number: N970003
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2016
• Device Explanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Non-Healthcare Professional
• Remedial Action: Recall,Notification
• Type of Report: Initial
• Report Date (Section B): 09/23/2026

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: Lay User/Patient
• Device Expiration Date: 01/20/2018
• Device Model Number: L321
• Device Catalogue Number: L321
• Device Lot Number: 710378
• Was Device Available for Evaluation?: Yes
• Date Returned to Manufacturer: 11/14/2025
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 09/02/2026
• Initial Report FDA Received Date: 09/24/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 02/12/2016
• 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 Age: 87 YR
• Patient Sex: Male