Olympus medical systems corp.(omsc) was informed from the user that preparation for use, the black foreign material came out from the air/water nozzle of the endoscope when air/water supply.The same event occurs frequently, but the model and serial number cannot be identified.The device had been reprocessed with an olympus automated endoscope reprocessor model oer-4 (not available in the usa) using peracetic acid.Other detailed information was not provided.There was no report of patient injury associated with the event.
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This supplemental report is being submitted to provide additional information.The foreign material was returned to olympus medical systems corp.(omsc) for evaluation.Omsc could not review the device history record because the subject device is unknown.There is possibility that the foreign material is a mixture of cellulose and protein.There is the possibility that the cellulose came from the component of molds and cellulosic chemicals, etc.There is the possibility that the protein came from the component of living body, bacteria, protein-based chemicals, etc.The exact cause of this event could not be conclusively determined.Olympus medical systems corp.(omsc) surmised that the reported phenomenon occurred due to the following cause.- the foreign material entered the air/water channel and the foreign material was not removed due to insufficient cleaning and rinsing.
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