MAUDE Adverse Event Report: ZOLL MEDICAL CORPORATION X SERIES; DEFIBRILLATOR/PACEMAKER

Model Number	X SERIES
Medical Device Problem Code	Failure of Device to Self-Test (2937)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Zoll medical corporation has not received the device for evaluation and this complaint is still under investigation.
Event or Problem Description
Complainant alleged that while attempting to treat a patient (age & gender unknown), the device failed self-test for defib & pacer functions.Complainant did not indicate that there was any adverse effect to the patient due to the reported malfunction.
Additional Manufacturer Narrative
The device was returned to zoll medical corporation for evaluation.The reported issue could not be duplicated during testing.Review of the device logs identified occurrences of defib/pacer fault messages; however, bench handling, power cycling, and defib/pacer functional stress testing did not reproduce the reported behavior.The pace/defib engine board was replaced as a precaution.The device was recertified and returned to the customer.No trend is associated with reports of this type.

• Brand Name: X SERIES
• Common Device Name: DEFIBRILLATOR/PACEMAKER
• Manufacturer (Section D): ZOLL MEDICAL CORPORATION; 269 mill road; chelmsford MA 01824
• Manufacturer Contact: scott august ; 269 mill road; chelmsford, MA 01824 ; 9784219552
• MDR Report Key: 23991821
• Report Number: 1220908-2026-00052
• Device Sequence Number: 10398999
• Product Code: MKJ
• UDI-Device Identifier: 00847946019297
• UDI-Public: (01)00847946019297
• Combination Product (Y/N): N
• Initial Reporter State: OR
• Initial Reporter Country: US
• PMA/510(K) Number: P160022
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 12/19/2025

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: Other
• Device Model Number: X SERIES
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: No
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 12/19/2025
• Supplement Date Received by Manufacturer: Not provided
• Initial Report FDA Received Date: 01/07/2026
• Supplement Report FDA Received Date: 02/16/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 11/01/2023
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Reuse
• Patient Sequence Number: 1
• Patient Sex: Unknown