MAUDE Adverse Event Report: KARL STORZ SE & CO. KG C-MAC MONITOR FOR CMOS ENDOSCOPES

Model Number	8404ZX
Medical Device Problem Code	No Display/Image (1183)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The device in question was returned to the manufacturer.This information is reflected in section d9.The evaluation is anticipated, but not yet begun.The investigation will be performed by a designated karl storz employee.The event is filed under internal karl storz complaint id: (b)(4).
Event or Problem Description
It was reported that: user reports that when connecting the 8404axc and 11302bdx to enable dual-screen mode, the display blacks out after several minutes.We connected 8404axc and 11302bdx and checked the phenomenon with dual-screen display, but we did not observe the blackout issue within a few minutes.No patient involvement reported.No negative impact in state of health reported.
Additional Manufacturer Narrative
Accordingly, we would like to give a summary of our results regarding the reported issue.The fault description provided by the customer, "display blacks out," could not be verified during the technical inspection.The inspection revealed that the device is fully functional.Internal karl storz reference number: (b)(4).

• Brand Name: C-MAC MONITOR FOR CMOS ENDOSCOPES
• Common Device Name: C-MAC MONITOR FOR CMOS ENDOSCOPES
• Manufacturer (Section D): KARL STORZ SE & CO. KG; dr.-karl-storz-strasse 34; tuttlingen, 78532 ; GM 78532
• Manufacturer (Section G): KARL STORZ SE & CO. KG; dr.-karl-storz-strasse 34; tuttlingen, 78532 ; GM 78532
• Manufacturer Contact: anja fair ; 2151 e grand ave; el segundo, CA 90245
• MDR Report Key: 23839460
• Report Number: 9610617-2025-02358
• Device Sequence Number: 15845802
• Product Code: CCW
• UDI-Device Identifier: 04048551432778
• UDI-Public: 04048551432778
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: EXEMPT
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 04/22/2026

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 Model Number: 8404ZX
• Device Catalogue Number: 8404ZX
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 12/08/2025
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 12/11/2025
• Supplement Date Received by Manufacturer: 04/20/2026
• Initial Report FDA Received Date: 12/18/2025
• Supplement Report FDA Received Date: 04/22/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• 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: Unknown
• Patient Sequence Number: 1
• Patient Sex: Unknown