MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION FLEXTEND; IMPLANTABLE LEAD

Model Number	4088
Medical Device Problem Codes	Failure to Capture (1081); Fracture (1260); High impedance (1291)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	11/18/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that this right ventricular (rv) lead exhibited a red alert due to high pacing impedance out of range.The lead remains in service.No adverse patient effects were reported.
Event or Problem Description
It was reported that this right ventricular (rv) lead exhibited a red alert due to high pacing impedance out of range.The lead remains in service.No adverse patient effects were reported.Additional information was obtained; the lead was found to be fracture and was subsequently surgically abandoned.
Event or Problem Description
It was reported that this right ventricular (rv) lead exhibited a red alert due to high pacing impedance out of range.The lead remains in service.No adverse patient effects were reported.Additional information was obtained; the lead was surgically abandoned.
Event or Problem Description
It was reported that this right ventricular (rv) lead exhibited a red alert due to high pacing impedance out of range.The lead remains in service.No adverse patient effects were reported.Additional information was obtained, the lead was found to be fracture and exhibited loss of capture (loc); the lead was subsequently surgically abandoned.
Additional Manufacturer Narrative
The device was not returned for analysis; therefore, a technical analysis could not be performed as it remains in service.A review of the device history record (dhr) was performed.The review of the dhr identified that there were no process related non-conformances, scrap, or rework performed during the production that could explain the event.The reviews ensure each device meets specification prior to release for use.There is no indication the device manufacturing process contributed to the reported complaint.A risk review was completed and confirmed that the event of fracture was defined in the risk documentation.This event type has been accounted for during product risk analysis to support acceptable risk benefit for the product.Review of labeling determined that the complaint situation was listed in the manual.There was no indication in the complaint that the product was not used in accordance to labeling.The manual was unlikely to be the cause of the reported complaint; translation, wording, or graphics does not require further review.Based on a thorough review of the reported complaint, boston scientific has assigned an investigation conclusion code of known inherent risk of device.
Event or Problem Description
It was reported that this right ventricular (rv) lead exhibited a red alert due to high pacing impedance out of range.The lead remains in service.No adverse patient effects were reported.Additional information was obtained; the lead was found to be fracture and exhibited loss of capture (loc); the lead was subsequently surgically abandoned.

• Brand Name: FLEXTEND
• Common Device Name: IMPLANTABLE LEAD
• Manufacturer (Section D): BOSTON SCIENTIFIC CORPORATION; 4100 hamline avenue north; saint paul MN 55112
• Manufacturer (Section G): CPI - DEL CARIBE; guidant puerto rico b. v.; #12, rd. #698; dorado PR 00646
• Manufacturer Contact: timothy degroot ; 4100 hamline avenue north; saint paul, MN 55112 ; 6515826168
• MDR Report Key: 23783193
• Report Number: 2124215-2025-90465
• Device Sequence Number: 17425497
• Product Code: DTB
• UDI-Device Identifier: 00802526397745
• UDI-Public: (01)00802526397745(17)061013
• Combination Product (Y/N): Y
• Initial Reporter State: FL
• Initial Reporter Country: US
• PMA/510(K) Number: P960006
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2005
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup,Followup,Followup,Followup
• Report Date (Section B): 04/21/2026

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: 10/13/2006
• Device Model Number: 4088
• Device Catalogue Number: 4088
• 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: 11/20/2025
• Supplement Date Received by Manufacturer: 12/09/2025; 12/10/2025; 12/12/2025; 04/20/2026
• Initial Report FDA Received Date: 12/11/2025
• Supplement Report FDA Received Date: 12/11/2025; 12/12/2025; 12/17/2025; 04/21/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 10/13/2004
• 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: Hospitalization; Required Intervention
• Patient Age: 81 YR
• Patient Sex: Male