MAUDE Adverse Event Report: AIZU OLYMPUS CO., LTD. WATER FILTER

Model Number	MAJ-2318
Medical Device Problem Codes	Device Reprocessing Problem (1091); Improper or Incorrect Procedure or Method (2017)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that the water filter for the reprocessing unit had not been changed at the appropriate intervals, and the scope washed by reprocessor was used on a patient.There was no report of patient or user harm as a result of the event.
Additional Manufacturer Narrative
The investigation is ongoing.A supplemental report will be submitted when the investigation is completed or if additional information becomes available.
Additional Manufacturer Narrative
This supplemental report is being submitted to provide the results of the final investigation.Updated fields: h6, h11.The device was not returned to olympus for evaluation.Based on the results of the investigation, while the definitive root cause of the reported issue could not be determined, it is likely that the user did not peruse the instruction manual and had insufficient knowledge of the equipment.The event is detectable by handling the product in accordance with the following instructions for use.Oer-4 instruction operation manual ""7.2 replacing the water filter (maj-2318)"".A review of the device history record found no deviations that could have caused or contributed to the reported issue.Should additional relevant information become available, a supplemental report will be submitted.Olympus will continue to monitor field performance for this device.
Event or Problem Description
No additional information from the customer.

• Brand Name: WATER FILTER
• Common Device Name: WATER FILTER
• Manufacturer (Section D): AIZU OLYMPUS CO., LTD.; 3-1-1 niiderakita; aizuwakamatsu-shi, fukushima 965-8 520; JA 965-8520
• Manufacturer (Section G): AIZU OLYMPUS CO., LTD.; 3-1-1 niiderakita; aizuwakamatsu-shi, fukushima 965-8 520; JA 965-8520
• Manufacturer Contact: todd brill ; 800 west park drive; westborough, MA 01581 ; 5082077661
• MDR Report Key: 22037972
• Report Number: 9610595-2025-08798
• Device Sequence Number: 18170731
• Product Code: FEB
• UDI-Device Identifier: 04953170401473
• UDI-Public: 04953170401473
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K190969
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,User Facility
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup
• Report Date (Section B): 03/18/2026

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: MAJ-2318
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 05/07/2025
• Supplement Date Received by Manufacturer: 02/25/2026
• Initial Report FDA Received Date: 05/16/2025
• Supplement Report FDA Received Date: 03/18/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• 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