The subject device was inspected at olympus service operation repair center (sorc).Sorc checked the subject device and found that the reported phenomenon was duplicated.The channel cleaning brush could not be inserted smoothly into the instrument channel due to the clogging of the instrument channel.Omsc reviewed the manufacturing history (dhr) of the subject device and confirmed no irregularity.The exact cause of the reported event could not be conclusively determined.However, based on the reported information, there was possibility that the foreign material that entered the instrument channel from the outside could not be sufficiently removed due to insufficient cleaning and rinsing.If additional information becomes available, this report will be supplemented.
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