MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION PROPONENT EL DR; IMPLANTABLE PULSE GENERATOR, PACEMAKER (NON-CRT)

Model Number	L221
Medical Device Problem Code	Incorrect, Inadequate or Imprecise Result or Readings (1535)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	07/29/2021
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Following confirmation of explant, this event will be further updated.
Event or Problem Description
It was reported that during a routine follow-up, this device exhibited safety mode operation.No resulting adverse patient effects were reported and all attempts to obtain resolution were unsuccessful.Our information to date is suggestive that this device remains implanted.
Additional Manufacturer Narrative
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.Boston scientific issued a field safety notice regarding a subset of devices in the accolade pacemaker family that have a potential of exhibiting this behavior.This particular device is included in the hydrogen induced premature depletion advisory population.
Event or Problem Description
It was reported that during a routine follow-up, this device exhibited safety mode operation.No resulting adverse patient effects were reported and all attempts to obtain resolution were unsuccessful.The device was later explanted and returned for analysis.

• Brand Name: PROPONENT 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 ; EI
• Manufacturer Contact: timothy degroot ; 4100 hamline avenue north; saint paul, MN 55112 ; 6515826168
• MDR Report Key: 12686510
• Report Number: 2124215-2021-31748
• Device Sequence Number: 11815262
• Product Code: LWP
• UDI-Device Identifier: 00802526559112
• UDI-Public: 00802526559112
• Combination Product (Y/N): N
• Initial Reporter Country: PM
• PMA/510(K) Number: N970003/S167
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2016
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Company Representative
• Initial Reporter Occupation: Physician
• Remedial Action: Notification,Recall
• Type of Report: Initial,Followup
• Report Date (Section B): 06/01/2022

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?: Yes
• Operator of Device: Lay User/Patient
• Device Expiration Date: 09/24/2017
• Device Model Number: L221
• Device Catalogue Number: L221
• Device Lot Number: 705496
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 07/29/2021
• Supplement Date Received by Manufacturer: 05/27/2022
• Initial Report FDA Received Date: 10/22/2021
• Supplement Report FDA Received Date: 06/01/2022
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 11/24/2015
• Is the Device Labeled for Single Use? (Y/N): Yes
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Life Threatening; Required Intervention
• Patient Age: 48 YR
• Patient Sex: Female