MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION ENDOTAK RELIANCE; IMPLANTABLE LEAD

Model Number	0266
Medical Device Problem Codes	Signal Artifact/Noise (1036); Over-Sensing (1438); Pacing Problem (1439)
Health Effect - Clinical Code	Asystole (4442)
Date of Event	08/22/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that during a follow up visit, this cardiac resynchronization therapy defibrillator (crt-d) system exhibited noise on the right ventricular (rv) lead.It was noted that the patient was recently implanted with an additional concomitant device.Technical services (ts) was called fora consult review of the presenting electrogram (egm).Upon review, the presenting egm showed there to be 3.5 seconds of asystole that appeared to have been caused by oversensed myopotential noise.The health care professional (hcp) stated that the noise was reproduced in the clinic.Ts discussed programming optimization options with the hcp.No adverse patient effects were reported.At this time this crt-d and rv lead remain in service.

• Brand Name: ENDOTAK RELIANCE
• Common Device Name: IMPLANTABLE LEAD
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 4100 hamline avenue north; saint paul MN 55112
• Manufacturer (Section G): BOSTON SCIENTIFIC CORPORATION; road 698, lot no. 12; dorado PR 00646 -260; * 00646-2602
• Manufacturer Contact: timothy degroot ; 4100 hamline avenue north; saint paul, MN 55112 ; 6515826168
• MDR Report Key: 23393445
• Report Number: 2124215-2025-76975
• Device Sequence Number: 15920643
• Product Code: NVY
• UDI-Device Identifier: 00802526431296
• UDI-Public: (01)00802526431296(17)210219
• Combination Product (Y/N): Y
• Initial Reporter State: GA
• Initial Reporter Country: US
• PMA/510(K) Number: P910073
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2020
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 10/27/2025

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: 02/19/2021
• Device Model Number: 0266
• Device Catalogue Number: 0266
• Device Lot Number: 420045
• 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: 09/30/2025
• Initial Report FDA Received Date: 10/27/2025
• Date Device Manufactured: 02/19/2019
• 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: 77 YR
• Patient Sex: Male