MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION MOMENTUM CRT-D; IMPLANTABLE CARDIAC RESYNCHRONIZATION THERAPY DEFIBRILLATOR

Model Number	G126
Medical Device Problem Code	Premature Discharge of Battery (1057)
Health Effect - Clinical Codes	Anxiety (2328); No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/15/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that this pacemaker recorded a code 1003, which states that the voltage is too low for projected remaining capacity.A request was made to have data from this device analyzed.Data analysis identified potential high impedance within the battery.Device replacement was recommended as the battery impedance is expected to increase, and radio frequency (rf) telemetry will eventually be disabled.This device remains in-service at this time.No adverse patient effects were reported.Additional information received which indicates that this pacemaker was explanted.No additional adverse patient effects were reported.
Additional Manufacturer Narrative
The device was not returned for analysis; therefore, a technical analysis could not be performed.Good faith effort attempts were made to try and retrieve the device, however a response was not received.Based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of cause linked to device but unable to trace more specifically.
Event or Problem Description
It was reported that this pacemaker recorded a code 1003, which states that the voltage is too low for projected remaining capacity.A request was made to have data from this device analyzed.Data analysis identified potential high impedance within the battery.Device replacement was recommended as the battery impedance is expected to increase, and radio frequency (rf) telemetry will eventually be disabled.This device remains in-service at this time.No adverse patient effects were reported.Additional information received which indicates that this pacemaker was explanted.No additional adverse patient effects were reported.
Additional Manufacturer Narrative
This report is being submitted to correct the additional mfr narrative field (h11) in section h, device manufacturers only.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.A risk review was completed and confirmed that the event of message - error code 1003 was defined in the risk documentation.This event type has been accounted for during product risk analysis to support acceptable risk benefit for the product.Review of labeling determined that the complaint situation was listed in the manual.There was no indication in the complaint that the product was not used in accordance to labeling.The manual was unlikely to be the cause of the reported complaint; translation, wording, or graphics does not require further review.The device was not returned for analysis; therefore, a technical analysis could not be performed.Good faith effort attempts were made to try and retrieve the device, however a response was not received.Based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of cause linked to device but unable to trace more specifically.
Event or Problem Description
It was reported that this pacemaker recorded a code 1003, which states that the voltage is too low for projected remaining capacity.A request was made to have data from this device analyzed.Data analysis identified potential high impedance within the battery.Device replacement was recommended as the battery impedance is expected to increase, and radio frequency (rf) telemetry will eventually be disabled.This device remains in-service at this time.No adverse patient effects were reported.Additional information received which indicates that this pacemaker was explanted.No additional adverse patient effects were reported.

• Brand Name: MOMENTUM CRT-D
• Common Device Name: IMPLANTABLE CARDIAC RESYNCHRONIZATION THERAPY DEFIBRILLATOR
• 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: 24570316
• Report Number: 2124215-2026-13579
• Device Sequence Number: 15843067
• Product Code: NIK
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: P010012
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2022
• Device Explanted Year: 2026
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 06/15/2026

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: 10/04/2023
• Device Model Number: G126
• Device Catalogue Number: G126
• Device Lot Number: 106077
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/17/2026
• Supplement Date Received by Manufacturer: 05/08/2026; 05/29/2026
• Initial Report FDA Received Date: 03/11/2026
• Supplement Report FDA Received Date: 05/22/2026; 06/15/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 11/03/2021
• 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: 66 YR
• Patient Sex: Female