This device referenced in this report has been returned to olympus medical systems corp.For evaluation.The evaluation found that the phenomenon was reproduced.A pinhole was found in the instrument channel of the subject device.The manufacturing record of the subject device was reviewed with no abnormality possibly associated with the reported phenomenon.The exact cause of the reported event could not be conclusively determined however, it will be a possible cause that water or chemical solution intrudes into the subject device and the image unit was short-circuited as a pinhole was found in the instrument channel.
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