MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION RELIANCE 4-FRONT?; IMPLANTABLE LEAD

Model Number	0675
Medical Device Problem Code	Low impedance (2285)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	10/10/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the right ventricular (rv) lead for this implantable cardioverter defibrillator (icd) exhibited low out of range shock impedances.The shock lead impedance dropped from 50 ohms down to 0 ohms and came back up.The rv pace impedances also dropped but stayed within normal limits.Technical services (ts) sked if the patient underwent a procedure during that time or to potentially bring the patient in to clinic for further testing.This rv lead and icd remain in service.No adverse patient effects were reported.

• 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; * 00646-2602
• Manufacturer Contact: timothy degroot ; 4100 hamline avenue north; saint paul, MN 55112 ; 6515826168
• MDR Report Key: 23597132
• Report Number: 2124215-2025-84678
• Device Sequence Number: 10380149
• Product Code: NVY
• UDI-Device Identifier: 00802526496981
• UDI-Public: (01)00802526496981(17)220727
• Combination Product (Y/N): Y
• Initial Reporter State: MA
• 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: Company Representative
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 11/19/2025

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: 07/27/2022
• Device Model Number: 0675
• Device Catalogue Number: 0675
• Device Lot Number: 504139
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/22/2025
• Initial Report FDA Received Date: 11/19/2025
• Date Device Manufactured: 07/27/2020
• 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: 75 YR
• Patient Sex: Male