MAUDE Adverse Event Report: BOSTON SCIENTIFIC CORPORATION ACUITY X4 SPIRAL L; IMPLANTABLE PULSE GENERATOR, PACEMAKER (NON-CRT)

Model Number	4678
Medical Device Problem Codes	Defective Device (2588); Insufficient Device Problem Information (3190)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	09/05/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that this left ventricular (lv) lead implant was attempted due to an unspecified product performance issue.A different lead model was used, and the procedure was completed successfully.No additional adverse patient effects were reported.Product return was requested.
Additional Manufacturer Narrative
The local area field representative was contacted for additional information regarding event cause/resolution and product return status.At this time, no further information is available.Should additional information become available this report will be updated.
Additional Manufacturer Narrative
Upon receipt at our post market quality assurance laboratory, a thorough evaluation of the lead was performed.Testing was completed to assess lead electrical performance and inner/outer insulation integrity.Measurements throughout these tests were within normal limits.Microscopic inspections of the terminal pin assembly, lead body, and electrode tip found no anomalies.Laboratory testing was unable to reproduce the reported clinical observations and detailed analysis did not reveal any abnormalities.Laboratory analysis did not identify any lead characteristics that would have caused or contributed to the reported clinical observations.
Event or Problem Description
It was reported that this left ventricular (lv) lead implant was attempted due to an unspecified product performance issue.A different lead model was used, and the procedure was completed successfully.No additional adverse patient effects were reported.Product return was requested.

• Brand Name: ACUITY X4 SPIRAL L
• Common Device Name: IMPLANTABLE PULSE GENERATOR, PACEMAKER (NON-CRT)
• 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: 23207275
• Report Number: 2124215-2025-69994
• Device Sequence Number: 9278703
• Product Code: LWP
• UDI-Device Identifier: 00802526524615
• UDI-Public: (01)00802526524615(17)270727
• Combination Product (Y/N): Y
• Initial Reporter State: NC
• Initial Reporter Country: US
• PMA/510(K) Number: P010012
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2025
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Remedial Action: Replace
• Type of Report: Initial,Followup
• Report Date (Section B): 02/17/2026

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 Model Number: 4678
• Device Catalogue Number: 4678
• Device Lot Number: 816813
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 09/05/2025
• Supplement Date Received by Manufacturer: 02/05/2026
• Initial Report FDA Received Date: 10/03/2025
• Supplement Report FDA Received Date: 02/17/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 07/27/2025
• 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
• Patient Age: 57 YR
• Patient Sex: Male