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.Omsc reviewed the manufacturing history (dhr) of the subject device and confirmed no irregularity.The exact cause of the reported phenomenon could not be conclusively determined.However, there is the possibility that the reported phenomenon was attributed to physical stress such as dropping an object on the lid, or powerfully pushing the lid in, or chemical stress such as not wiping chemical solutions off.
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