This supplemental report is being submitted to provide additional information.The subject device has not been returned to olympus medical systems corp.(omsc) for evaluation, but was returned to olympus korea (okr).Okr confirmed the reported phenomenon that there was a gap in the adhesive of the distal end.In addition, okr found brown stain and traces of water ingress inside of the light guide lens, and scratches and cracks in the light guide lens.Omsc reviewed the manufacturing history (dhr) of the subject device and confirmed no irregularity.There was no service record for the device.The exact cause of the reported phenomenon could not be conclusively determined.However, based upon the inspection by okr, there is the possibility that this phenomenon was attributed to the physical stress or the chemical stress, the poor condition of the storage cabinet, such as environment exposed to the direct daylight, high temperature, elevated humidity, x-ray and/or ultraviolet, in the user facility, or the aging deterioration due to the long-term use, and so on.
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