The subject device was returned to sorc but has not been returned to omsc.
Sorc checked the subject device for evaluation.
It was confirmed that the insertion tube of the subject device was peeled off more than 4mm due to the deterioration.
Omsc reviewed the manufacturing history (dhr) of the subject device and confirmed no irregularity.
It could not be identified the cause of the reported phenomenon.
However based on the report of sorc, omsc surmised there was the possibility this phenomenon was attributed to deterioration of the insertion part serpentine tube of the subject device.
In addition, it has been confirmed that this phenomenon does not occur due to product or manufacturing, and that there is no problem with safety and there are no multiple occurrences.
If additional information becomes available, this report will be supplemented.
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