As part of our investigation, olympus made multiple follow ups with the user facility by telephone and in writing in an attempt to gather additional information on the reported event; however, no additional information was obtained.The scope was returned to olympus for evaluation.The evaluation confirmed the reported scope issue.A visual inspection was performed on the scope and found signs of foreign material stuck inside the auxiliary water channel opening causing a blockage and preventing air from escaping the nozzle when water is passed through the water auxiliary inlet port from the scope connector side.The scope was serviced and returned to the user facility.Based on the investigation findings, the cause of the reported event is likely attributed to improper maintenance of the scope.The instruction manual for use provides several statements in an effort to prevent equipment damage and patient injury, ¿before each case, prepare and inspect this endoscope as instructed below.Inspect other equipment to be used with this endoscope as instructed in their respective instruction manuals.Should any irregularity be observed after inspection, follow the instructions as described in chapter 5, ¿troubleshooting¿.If the endoscope malfunctions, do not use it.Return it to olympus for repair as described in section 5.4, ¿returning the endoscope for repair¿.Using an endoscope that is not functioning properly may compromise patient or operator safety and may result in more severe equipment damage.After using this instrument, reprocess and store it according to the instructions given in the endoscope¿s companion reprocessing manual.Improper and/or incomplete reprocessing or storage can pose an infection control risk, cause equipment damage, or reduce performance.Be sure to prepare another endoscope to avoid interruption of the examination due to equipment failure or malfunction.".
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