MAUDE Adverse Event Report: MEDTRONIC NEUROMODULATION UNIPOLAR, EPICARDIAL, OVAL PATCH LEAD, DF1; IMPLANTABLE CARDIOVERTER DEFIBRILLATOR (NON-CRT)

Model Number	6721L-50
Medical Device Problem Codes	Over-Sensing (1438); High Capture Threshold (3266)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	12/20/2017
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Continuation of d10: 5076-52 lead - implanted: (b)(6) 2017; 968-60 lead - implanted: (b)(6) 2010; 4968-60 lead - implanted: (b)(6) 2010; 4968-60 lead - implanted: (b)(6) 2010; 5076-52 lead - implant date: (b)(6) 2017, medtronic submits this report to comply with fda regulations 21 cfr parts 4 and 803.Medtronic has made reasonable efforts to provide as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.Medtronic will submit a supplemental report if additional relevant information becomes known.
Event or Problem Description
It was reported that the right ventricular (rv) lead exhibited t-wave oversensing (twos) and elevated rv threshold.The left ventricular (lv) lead had exhibited no capture.The lv lead was capped and the rv lead remains in use.No patient complications have been reported as a result of this event.
Additional Manufacturer Narrative
Correction: h6 (annex d).Medtronic submits this report to comply with fda regulations 21 cfr parts 4 and 803.Medtronic has made reasonable efforts to provide as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.Medtronic will submit a supplemental report if additional relevant information becomes known.
Additional Manufacturer Narrative
Product event summary: the lead was not returned for analysis, however, performance data collected from the device was received and analyzed.Analysis of the device memory indicated pacing capture threshold in the right ventricle was elevated.Medtronic submits this report to comply with fda regulations 21 cfr parts 4 and 803.Medtronic has made reasonable efforts to provide as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.Medtronic will submit a supplemental report if additional relevant information becomes known.

• Brand Name: UNIPOLAR, EPICARDIAL, OVAL PATCH LEAD, DF1
• Common Device Name: IMPLANTABLE CARDIOVERTER DEFIBRILLATOR (NON-CRT)
• Manufacturer (Section D): MEDTRONIC NEUROMODULATION; 7000 central ave ne; minneapolis MN 55432
• Manufacturer (Section G): MEDTRONIC NEUROMODULATION; 7000 central ave ne; minneapolis MN 55432
• Manufacturer Contact: gerard torenvliet ; 8200 coral sea st ne; mounds view, MN 55112-4391 ; 7635269277
• MDR Report Key: 24345059
• Report Number: 2182207-2026-00382
• Device Sequence Number: 9912131
• Product Code: LWS
• UDI-Device Identifier: 00681490148733
• UDI-Public: (01)00681490148733(17)100828
• Combination Product (Y/N): N
• Initial Reporter State: MN
• Initial Reporter Country: US
• PMA/510(K) Number: P900061
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2010
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 03/04/2026

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 Expiration Date: 08/28/2010
• Device Model Number: 6721L-50
• Device Catalogue Number: 6721L-50
• 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: 01/29/2026
• Supplement Date Received by Manufacturer: 02/23/2026; 03/04/2026
• Initial Report FDA Received Date: 02/16/2026
• Supplement Report FDA Received Date: 03/04/2026; 03/04/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 09/23/2008
• 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
• Concomitant Medical Products and Therapy/Usage Dates: DTPA2D1 CRTD
• Patient Age: 37 YR
• Patient Sex: Male