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The user facility reported that one of the radiopaque markers of the navicross catheter came off during the procedure and traveled down to the superficial femoral artery.The physician was able to trap it with a stent.Fluoroscopy video was available.The marker was stented against the vessel intima.The procedure was successful, and the patient was discharged.Additional information was received on 07 feb 2023: the procedure performed was a popliteal artery angiogram.There was no blood loss.The patient was successfully treated, stable and discharged.
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This report is being submitted as follow up no.1 to update section h3, and to provide the completed investigation results.Visual inspection of the actual sample found that approximately 40 millimeters (mm) from the tip, the second radiopaque marker was missing.Magnifying inspection of the actual sample found that there was a caulking mark at the second radiopaque marker position of the actual sample.The third radiopaque marker of the actual sample was in its position and not lifted.There was no lift or gap in the second and third radiopaque markers of a current product sample electron microscopic inspection of the actual sample found that the distal end was deformed and scratched.Approximately 30mm from the distal end was scratched.Approximately 40mm from the distal end (the second radiopaque marker position) was scratched over the caulking mark.There are no scratches or other abnormalities at other positions.Dimensional inspection of the actual sample found that the outer diameter of the distal end was within our control standards, there was no abnormalities.The inner diameter of the distal end was within our control standards, there was no abnormalities.Inner diameter of the proximal section was within our control standards, no abnormalities.Comparison of the outer diameter with the current product showed that the second radiopaque marker of the current product was removed for the comparison with the actual sample.The outer diameter of the caulking mark of the actual sample was confirmed to be equivalent to the same position of the current product and no abnormalities were observed.According to the investigation results, no abnormalities were found in the dimensions of the actual sample.As mentioned in the preliminary report, there was no abnormalities in the manufacturing record and shipping inspection record of the actual sample.In addition, the outer diameter of the caulking mark of the actual sample was confirmed to be equivalent to the same position of the current product, it was presumed that the second radiopaque marker of the actual sample had been caulked properly.In this case, as one of the possibilities, as there was a scratch that had been made over the second radiopaque marker position (approximately 40 mm from the distal end) of the actual sample, it was presumed that the actual sample was exposed to some hard object (e.G., stenotic lesion), caught in it, and scratched excessively, which resulted in the dislodgement of the second radiopaque marker.Ashitaka factory assures the quality of the product under the following controls.100% visual inspection is performed to check for the fixing status of the radiopaque markers.100% visual inspection is performed to confirm that there are no abnormalities such as crushing before the insertion of the catheter into the holder tube in the packaging process.Instructions for use (ifu) of this product states the following information: "carefully handle the product under fluoroscopy.If any resistance is felt while handling the product, immediately stop the manipulation and find out the cause to avoid damage to blood vessels and separation or breakage of the product.".
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