MAUDE Adverse Event Report: SHIRAKAWA OLYMPUS CO., LTD. CHANNEL CLEANING BRUSH

Model Number	BW-20T
Medical Device Problem Code	Degraded (1153)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	12/02/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was observed that during the device evaluation, the ultrasonic channel cleaning brush exhibited the damaged area was observed, and the issue at this time was deformation.There was no patient involvement.
Additional Manufacturer Narrative
The device was returned to olympus for inspection and the reported failure was confirmed.A root cause could not be identified.Based on the deformation, it was confirmed that external forces were applied to at least two points.The exact timing of the deformation is unknown.It is considered highly likely that the indicated phenomenon is not damage caused by deterioration, but rather damage resulting from continuous external force.Should additional relevant information become available, a supplemental report will be submitted.Olympus will continue to monitor field performance for this device.

• Brand Name: CHANNEL CLEANING BRUSH
• Common Device Name: CLEANING BRUSH
• Manufacturer (Section D): SHIRAKAWA OLYMPUS CO., LTD.; 3-1 okamiyama; odakura, nishigo-mura,; nishishirakawa-gun, fukushima 961-8 061; JA 961-8061
• Manufacturer (Section G): SHIRAKAWA OLYMPUS CO., LTD.; 3-1 okamiyama; odakura, nishigo-mura,; nishishirakawa-gun, fukushima 961-8 061; JA 961-8061
• Manufacturer Contact: todd brill ; 800 west park drive; westborough, MA 01581 ; 5082077661
• MDR Report Key: 25073345
• Report Number: 3002808148-2026-14372
• Device Sequence Number: 10685688
• Product Code: MNL
• UDI-Device Identifier: 04953170022630
• UDI-Public: 04953170022630
• Combination Product (Y/N): N
• PMA/510(K) Number: CLASS1-EXMPT
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Foreign,Company Representative
• Initial Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date (Section B): 05/04/2026

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: BW-20T
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 01/06/2026
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 04/28/2026
• Initial Report FDA Received Date: 05/04/2026
• 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: Reuse
• Patient Sequence Number: 1
• Patient Sex: Unknown