The device was returned to olympus for evaluation and the customer¿s allegation was confirmed.During the evaluation it was found that the connecting tube has coating peeling, (maximum width 4mm or more).Additional findings were as follows: due to a pinhole on channel-tube, water tightness is lost, due to a pinhole on connecting tube, water tightness is lost, the adhesive on bending section cover has a chip, the connecting tube has a wrinkle, the video connector case has discoloration, the universal cord has a dent, due to wear of angle wire, bending angle in up direction does not meet the standard value, and an abnormal sound is made due to damage on angulation lever.Based on the results of the investigation, the root cause or factors that caused coating of soft insertion tube peeled off (long diameter 4mm or more) could not be identified.Therefore, a definitive root cause cannot be identified.A review of the device history record found no deviations that could have caused or contributed to the reported issue.It has been over 10 years since the subject device was manufactured.Olympus will continue to monitor the field performance of this device.
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