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)
Date of Event	10/28/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported the water filter had not been replaced in 2 years.The reported issue occurred during reprocessing.There were no reports of patient involvement.
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.A root cause could not be identified.Based on the results of the investigation, the most likely cause of the filter not being replaced was the instructions for use not being followed.The event can be detected/prevented by following the instructions for use which state: operation manual "chapter 7 monthly or weekly tasks 7.2 replacing the water filter (maj-2318)".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 received 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: 23658624
• Report Number: 9610595-2025-35134
• Device Sequence Number: 10055102
• 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): N
• Reporter Type: Manufacturer
• Report Source: Foreign,User Facility
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 03/16/2026

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
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 10/28/2025
• Supplement Date Received by Manufacturer: 03/12/2026
• Initial Report FDA Received Date: 11/26/2025
• Supplement Report FDA Received Date: 03/16/2026
• 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