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As reported for this event by the customer, during the therapeutic sphincterotomy procedure, the papillotome device began to cut, and the wire broke in the proximal part.The procedure was completed with another papillotome olympus device.There is no harm or adverse impact to the patient.
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The returned device has been evaluated.This supplemental report is being submitted to provide this information.Please see the updates in sections: g3, g6, h2, h3, h4, h6, and h10.Device history record review indicates that the device was manufactured and tested in accordance with all applicable procedures and met all final product release criteria.Lot number from 12v 22 is lot number on the device.Package lot number is 12v.The device is returned and an evaluation completed for it.The user¿s complaint was confirmed.Upon inspection of the device, it was observed that cutting wire was broken.The broken portion was scorched and melted.The outer diameter of the cutting wire was measured.The result indicated no abnormalities.The length of the coated portion of the cutting wire, and the cutting wire itself presented no abnormalities.There were no missing parts in the subject device.Other abnormalities that could lead to the breakage of the cutting wire were not confirmed.Based on the investigation result and the similar complaint investigation results in the past, the cause of the breakage of the wire might be in the following: an electrical discharge possibly occurred, and the cutting wire became hot instantly.That have caused the cutting wire to break.High frequency current was conducted between the cutting wire and the distal end of the endoscope at the point of contact or the devices being closed to each other.The instructions for use includes the following statements that contains the following information.Therefore, it would be possible to prevent this event from occurring.¿ 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.¿ when inserting the instrument into the endoscope, be sure that the cutting wire is parallel to the tube.Otherwise, the metal part of the forceps elevator may contact the cutting wire and peel off the coating material.¿ do not activate output while tissue is in contact with the torn or damaged coated portion of the distal end.If output is activated while tissue is contacting the torn or damaged coated portion due to insertion into or withdrawal from an endoscope, leakage current, decreased output, and/or thermal injury could result.¿ if you feel the cutting is blunt, withdraw the device from the scope to examine if there is any peel off and tear at the coating portion.
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