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

Model Number	0171
Medical Device Problem Codes	High impedance (1291); Failure to Convert Rhythm (1540)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	12/30/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that this right ventricular (rv) lead exhibited high within range shock impedance measurements.Technical services (ts) recommended further monitoring of this lead.Subsequently, this lead was explanted.No additional adverse patient effects were reported.
Additional Manufacturer Narrative
At this time, no further information is available.Should additional information become available this report will be updated.
Additional Manufacturer Narrative
This report is being submitted to make an updated in section b5 and h6 codes.At this time, no further information is available.Should additional information become available this report will be updated.
Event or Problem Description
It was reported that this right ventricular (rv) lead exhibited high within range shock impedance measurements.Technical services (ts) recommended further monitoring of this lead.Subsequently, this lead was explanted.No additional adverse patient effects were reported.This lead is not expected to be returned to boston scientific.Additional information indicated that there were also difficulties to convert arrythmias.No additional adverse patient effects were reported.This lead is not expected to be returned to boston scientific.

• Brand Name: ENDOTAK RELIANCE SG
• 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: 24318700
• Report Number: 2124215-2026-07886
• Device Sequence Number: 4811161
• Product Code: LWS
• UDI-Device Identifier: 00802526373374
• UDI-Public: (01)00802526373374(17)130215
• Combination Product (Y/N): Y
• Initial Reporter State: IL
• Initial Reporter Country: US
• PMA/510(K) Number: P910073
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2012
• Device Explanted Year: 2026
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 02/13/2026

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: 02/15/2013
• Device Model Number: 0171
• Device Catalogue Number: 0171
• Device Lot Number: 103367
• 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: 01/14/2026
• Supplement Date Received by Manufacturer: 02/12/2026
• Initial Report FDA Received Date: 02/11/2026
• Supplement Report FDA Received Date: 02/13/2026
• Date Device Manufactured: 02/15/2011
• 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: 66 YR
• Patient Sex: Male