This is a supplemental report to provide additional information.The subject device was returned to local service department of olympus.Local service department checked the subject device and confirmed the reported phenomenon and it was due to deterioration.The subject device was not returned to olympus medical systems corp.(omsc) for evaluation.The manufacturing record was reviewed and found no irregularities.The exact cause of the reported event could not be conclusively determined.Based on the following information, omsc presumed that the event was caused by physical stress / chemical stress / storage environment, etc.- according to the inspection result by local service department, the grip was dirty, and u/d plate, angulation control lever and s-cylinder were discolored.- ifu states caution regarding physical stress, reprocessing method and storage environment of device.- according to past similar cases, it was presumed that event was caused by physical stress / chemical stress / storage environment, etc.
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