MAUDE Adverse Event Report: Abbott Medical (CRM-Sylmar) ISOFLEX OPTIM LEAD; Permanent Defibrillator Electrodes

Model Number	1944/52
Medical Device Problem Codes	Break (1069); Over-Sensing (1438)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	08/18/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the patient presented for a follow-up in clinic.Interrogation revealed that both the right ventricular (rv) and right atrial (ra) leads exhibited over-sensing attributed to wear and tear.Atrial over-sensing was reproducible with arm movements.No intervention or changes were performed, and the leads will continue to be monitored.The patient was asymptomatic and remained in a stable condition.

• Brand Name: ISOFLEX OPTIM LEAD
• Common Device Name: Permanent Defibrillator Electrodes
• Manufacturer (Section D): Abbott Medical (CRM-Sylmar); 15900 valley view court; sylmar CA 91342
• Manufacturer (Section G): Abbott Medical (CRM-Sylmar); 15900 valley view court; sylmar CA 91342
• Manufacturer Contact: navpreet singh ; 15900 valley view court; sylmar, CA 91342
• MDR Report Key: 50491409
• Report Number: 2017865-2026-18140
• Device Sequence Number: 18789688
• Product Code: NVY
• UDI-Device Identifier: 05414734502320
• UDI-Public: (01)05414734502320(10)2915927(17)120930
• Combination Product (Y/N): Y
• Initial Reporter Country: AS
• PMA/510(K) Number: P960030
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2009
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,User Facility,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 08/28/2026

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: Health Professional
• Device Expiration Date: 09/30/2012
• Device Model Number: 1944/52
• Device Lot Number: 2915927
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/18/2026
• Initial Report FDA Received Date: 08/28/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 09/29/2009
• 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 Sex: Unknown