MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION FINELINE II EZ Sterox; Implantable Lead

Model Number	4470
Medical Device Problem Codes	Failure to Capture (1081); Fracture (1260); Impedance Problem (2950)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/24/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that this right ventricular (rv) lead was explanted and replaced.No additional adverse patient effects were reported.Additional information was received.This rv lead was explanted due to subclavian crush.
Additional Manufacturer Narrative
This product investigation is still in progress.This report will be updated when product investigation is complete.
Event or Problem Description
It was reported that this right ventricular (rv) lead was explanted and replaced.No additional adverse patient effects were reported.Additional information was received.This rv lead was explanted due to subclavian crush.Additional information was received.This rv lead was explanted due to high impedance and loss of capture.
Additional Manufacturer Narrative
Additional information added to b5.F10 and h6 updated.This product investigation is still in progress.This report will be updated when product investigation is complete.

• Brand Name: FINELINE II EZ Sterox
• 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: 50773883
• Report Number: 2124215-2026-49129
• Device Sequence Number: 18773881
• Product Code: DTB
• UDI-Device Identifier: 00802526264993
• UDI-Public: (01)00802526264993(17)270908
• Combination Product (Y/N): Y
• Initial Reporter State: UT
• Initial Reporter Country: US
• PMA/510(K) Number: P960004
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2026
• Device Explanted Year: 2026
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 09/23/2026

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 Model Number: 4470
• Device Catalogue Number: 4470
• Device Lot Number: 919168
• Was Device Available for Evaluation?: Yes
• Date Returned to Manufacturer: 09/14/2026
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/24/2026
• Supplement Date Received by Manufacturer: 09/16/2026
• Initial Report FDA Received Date: 09/15/2026
• Supplement Report FDA Received Date: 09/23/2026
• Date Device Manufactured: 09/08/2025
• 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: 65 YR
• Patient Sex: Female