This supplemental report is being submitted to provide additional information.The device was not returned to olympus medical systems corp.(omsc), but returned to the department of olympus europa se & co.Kg for the evaluation.The evaluation of the device confirmed that there were rust, dust, and dirt on the internal parts such as the electro-pneumatic proportional valve.Device history record review indicates that the product was manufactured and tested in accordance with all applicable procedures and met all final product release criteria.The exact cause of the reported event could not be conclusively determined.However, based on the investigation result, omsc assumed that the reported event was caused by the rust on the electro-pneumatic proportional valve.The rust may have been caused by handling such as storage environment and usage environment.If significant additional information is received, this report will be supplemented.
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