MAUDE Adverse Event Report: ABBOTT MEDICAL (CRM-SYLMAR) JOT DX¿ ICM; RECORDER, EVENT, IMPLANTABLE CARDIAC, (WITHOUT ARRHYTHMIA DETECTION)

Model Number	DM4500
Medical Device Problem Code	Under-Sensing (1661)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	03/31/2026
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the patient presented remotely via merlin.Net.Review of the transmission revealed that the loop recorder exhibited undersensing.Further information was requested; however, was not provided.
Event or Problem Description
It was reported that the patient presented remotely via merlin.Net.Review of the transmission revealed that the loop recorder exhibited undersensing.It was noted that the device was experiencing a loss of contact due to possible air pockets.Further information was requested, however, was not provided.

• Brand Name: JOT DX¿ ICM
• Common Device Name: RECORDER, EVENT, IMPLANTABLE CARDIAC, (WITHOUT ARRHYTHMIA DETECTION)
• 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: 24941475
• Report Number: 2017865-2026-08215
• Device Sequence Number: 5624248
• Product Code: MXC
• UDI-Device Identifier: 05415067040046
• UDI-Public: (01)05415067040046(10)P000227439(17)260911
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: K163407
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2026
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,User Facility,Company Representative
• Initial Reporter Occupation: Nurse
• Type of Report: Initial,Followup
• Report Date (Section B): 04/28/2026

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: 09/11/2026
• Device Model Number: DM4500
• Device Lot Number: P000227439
• 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: 04/01/2026
• Supplement Date Received by Manufacturer: 04/21/2026
• Initial Report FDA Received Date: 04/21/2026
• Supplement Report FDA Received Date: 04/28/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 03/17/2025
• 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: 66 YR
• Patient Sex: Female