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

Model Number	630-2221111-01
Medical Device Problem Code	Failure to Capture (1081)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	10/26/2025
Type of Reportable Event	Malfunction
Event or Problem Description
Complainant alleged that while attempting to pace a patient (age & gender unknown) the device failed to capture the patient's heart rhythm.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
The device was returned to zoll medical corporation for evaluation.The device logs show repeated "pacer: paused lead fault" and "pads lead fault" messages, along with pads on/off toggling, indicating an intermittent connection between the patient and the pads.Although ecg signal was visible through lead ii, the device could not deliver pacing until the pads were properly connected at 10:12:07, after which immediate electrical capture was achieved.The device underwent functional testing including pacing and ecg assessments with no discrepancies found.No accessories were returned for evaluation.The issue is attributted to poor coupling.The device was recertified and returned to the customer.Analysis of reports of this type has not identified an increase in trend.

• 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: 23544043
• Report Number: 1220908-2025-04256
• Device Sequence Number: 18562868
• Product Code: MKJ
• UDI-Device Identifier: 00847946029524
• UDI-Public: (01)00847946029524
• Combination Product (Y/N): N
• Initial Reporter State: TX
• 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): 10/27/2025

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: 630-2221111-01
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 10/29/2025
• 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: 10/27/2025
• Supplement Date Received by Manufacturer: Not provided
• Initial Report FDA Received Date: 11/13/2025
• Supplement Report FDA Received Date: 11/24/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 03/01/2021
• 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