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

Model Number	G126
Medical Device Problem Codes	Device Alarm System (1012); Signal Artifact/Noise (1036); Over-Sensing (1438)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	05/29/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that during an in office interrogation of the cardiac resynchronization therapy defibrillator (crt-d) system, the physician informed the patient of an observation that could potentially result in shock therapy delivery.Technical services (ts) requested additional information to clarify the nature of the observation; however, the patient could not recall whether the observation involved noise oversensing within the system or an audible device generated alert.Due to the potential for noise oversensing, ts recommended that the patient seek further clarification from the physician.No adverse patient effects were reported.This system remains in service.
Additional Manufacturer Narrative
This product has not been returned to boston scientific, and as a result, laboratory analysis could not be conducted.Based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of known inherent risk of device.If pertinent information is provided in the future, a supplemental report will be submitted.

• Brand Name: MOMENTUM? CRT-D
• Common Device Name: CARDIAC RESYNCHRONIZATION THERAPY DEFIBRILLATOR (CRT-D)
• 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: 25686163
• Report Number: 2124215-2026-35376
• Device Sequence Number: 4797157
• Product Code: NIK
• UDI-Device Identifier: 00802526589140
• UDI-Public: (01)00802526589140(17)221008
• Combination Product (Y/N): N
• Initial Reporter State: TX
• Initial Reporter Country: US
• PMA/510(K) Number: P010012
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2022
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Consumer
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 07/01/2026

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: 10/08/2022
• Device Model Number: G126
• Device Catalogue Number: G126
• Device Lot Number: 105306
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 06/05/2026
• Initial Report FDA Received Date: 07/01/2026
• Date Device Manufactured: 10/20/2020
• 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: 63 YR
• Patient Sex: Male