The subject device was returned to olympus (b)(4) but has not been returned to omsc.Olympus (b)(4) checked the subject device for evaluation.It was confirmed that the coating on insertion tube of the subject device was peeled off due to deterioration.Omsc reviewed the manufacture history (dhr) of the subject device and confirmed no irregularity.The exact cause of the reported event could not be conclusively determined.However, based upon the information from olympus (b)(4), past similar case and instruction manual, omsc surmised that the reported phenomenon was attributed to physical stress, chemical stress and/or storage environment.If additional information is received, this report will be supplemented.
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