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

Model Number	610-2221011-01
Medical Device Problem Code	Unable to Obtain Readings (1516)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/03/2026
Type of Reportable Event	Malfunction
Event or Problem Description
Complainant alleged while attempting to monitror a patient (age & gender unknown), the device displayed an "ecg fault" message.Complainant indicated that the clinician obtained another device to continue treating the patient.Complainant indicated that there was no adverse effect to the patient due to the reported malfunction.
Additional Manufacturer Narrative
Zoll medical corporation has received the product and will be providing a supplemental report when our investigation is completed.
Additional Manufacturer Narrative
This supplemental medwatch report is reporting the evaluation of the device and correcting information submitted on the initial medwatch report.Please reference section b5.The device was returned to zoll medical corporation for evaluation.Review of the device logs found ecg monitoring failure occurring with rapid cable id changes.Evaluation determined the customer report was likely associated with an intermittent or compromised multifunction cable (mfc), which may cause fretting between the cable pins and device receptacle.The customer's mfc was not returned for evaluation.No device resets or unsupported cable ids were observed in the logs.The device passed bench testing and ecg stressing without duplicating the report.The mfc harness was replaced as a precaution and the customer was advised to discard the mfc involved in the event.The device was recertified and returned to the customer.Analysis of reports of this type has not identified an increase in trend.
Event or Problem Description
Complainant alleged while attempting to monitror a patient (age & gender unknown), the device displayed an "ecg monitoring failure" message.

• 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: 25055201
• Report Number: 1220908-2026-01525
• Device Sequence Number: 9354559
• Product Code: MKJ
• UDI-Device Identifier: 00847946005979
• UDI-Public: (01)00847946005979
• Combination Product (Y/N): N
• Initial Reporter State: NY
• 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): 04/10/2026

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: Other
• Device Model Number: 610-2221011-01
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 04/15/2026
• 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: 04/10/2026
• Supplement Date Received by Manufacturer: Not provided
• Initial Report FDA Received Date: 05/01/2026
• Supplement Report FDA Received Date: 05/13/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 11/01/2014
• 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