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It was reported, during a therapeutic endoscopic retrograde cholangiopancreatography after removal of the biliary prosthesis, the physician used the sphincterotome to enter the papilla of the bile ducts not visible through a diverticulum in order to visualize stenosis or stones.When the subject device was removed from the scope, the nurse noticed that the piece of metal used to bandage it was cut in half and one of the two parts were missing.The piece was searched in the working channel and inside the patient with the endoscope camera, but it was not found.The piece may have remained in the duodenum but reportedly, it was so small and thin, there was little risk for the patient.It was also not visible by radiograph.The procedure was prolonged by 30 minutes.There were no reports of further patient harm.
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This report is being supplemented to provide additional information based on the legal manufacturer's final investigation and device evaluation.Additionally, to provide correction to the initial with information inadvertently left out (a3, b2, and h6-impact code), to provide a correction to field (d8), and to provide an update to fields (d9, h3, and h4).The device was evaluated by olympus, and no reportable malfunctions were found that could have led to the reported event.A review of the device history record found no deviations that could have caused or contributed to the reported issue.Based on the results of the investigation, the root cause of the reported event could not be identified.The event can be prevented by following the instructions for use which state: "since the cutting wire is very thin, it may break off in the following cases: the distance between the papilla of vater and the wire is very short, the output is too high or activated while the wire touches metal parts of the endoscope, or the wire is tightened too strong.When the wire breaks off, its proximal end will be retracted toward the endoscope if the slider is pulled.If the slider is pushed, the wire will be pushed out toward the papilla or move sideways.If the wire breaks off, stop the output immediately and pull the slider completely to retract the broken wire into the tube.Then withdraw the instrument from the papilla.Otherwise, patient injury, such as perforations, bleeding, or lacerations within the biliary duct and/or damage of the endoscope could result." "be sure that the rear end of the cutting wire is extended from the distal end of the endoscope.In case the cutting wire contacts the forceps elevator, insufficient output or unintended tissue injury may occur." olympus will continue to monitor field performance for this device.
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