MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION RELIANCE 4-FRONT?; Implantable lead

Model Number	0676
Medical Device Problem Codes	Insufficient Device Problem Information (3190); High Capture Threshold (3266)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	09/17/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that this right ventricular (rv) lead was surgically abandoned due to an unknown reason.A new rv lead was implanted and remains in service.Additional information is being requested from the field.No additional adverse patient effects were reported.
Event or Problem Description
It was reported that this right ventricular (rv) lead was surgically abandoned due to very high threshold measurements.A new rv lead was implanted and remains in service.Additional information is being requested from the field.No additional adverse patient effects were reported.
Additional Manufacturer Narrative
The lead was not returned for analysis; therefore, a technical analysis could not be performed.Based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of no problem detected.
Additional Manufacturer Narrative
Correction to device coding and complaint summary to include the product performance was high threshold measurements.The lead was not returned for analysis; therefore, a technical analysis could not be performed.Based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of no problem detected.

• Brand Name: RELIANCE 4-FRONT?
• 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; PR 00646-2602
• Manufacturer Contact: mark mischke ; 4100 hamline avenue north; saint paul, MN 55112 ; +1(612)875-7234
• MDR Report Key: 50932777
• Report Number: 2124215-2026-51660
• Device Sequence Number: 13195238
• Product Code: NVY
• UDI-Device Identifier: 00802526497001
• UDI-Public: (01)00802526497001(17)261002
• Combination Product (Y/N): Y
• Initial Reporter State: FL
• Initial Reporter Country: US
• PMA/510(K) Number: P910073
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 09/30/2026

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: 10/02/2026
• Device Model Number: 0676
• Device Catalogue Number: 0676
• Device Lot Number: 519865
• 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: 09/17/2026
• Supplement Date Received by Manufacturer: 09/29/2026
• Initial Report FDA Received Date: 09/29/2026
• Supplement Report FDA Received Date: 09/30/2026
• Date Device Manufactured: 10/02/2024
• 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
• Outcome Attributed to Adverse Event: Required Intervention; Hospitalization
• Patient Age: 77 YR
• Patient Sex: Male