(b)(4).When the device was returned to the manufacturer, a reportable malfunction was recognized for the first time; therefore, the date of this report and the date received by the manufacturer were considered the date the device returned.The corsair pro microcatheter was returned for evaluation.The tip of the microcatheter was scratched likely by calcium of the lesion.The polymer jacket on the shaft proximal to the tip was also scratched and partially peeled off.Lot history review revealed no anomaly relating to the reported event.No other similar product experience report was received from this lot.Based on the obtained information and investigation outcome, it was presumed that strong friction with the calcified lesion during catheter manipulation had most likely contributed to the observed damage on the surface of the tip and the distal shaft of the returned microcatheter.It was concluded that this event was not attributed to product quality.Although there were no adverse patient effects, damage on the polymer jacket was severe; therefore, it was unable to completely rule out potentiality that some fragment(s) could be left in the patient.The instructions for use (ifu) states: [warnings] do not use this microcatheter in advanced calcified lesion; [warnings] if any resistance or something abnormal is felt when operating this product, do not continue the operation while the causes are unclear.If it is suspected that the product is not operating correctly, avoid excessive manipulations, and carefully remove the entire catheter system while paying full attention to avoid complications.(continuing the operation while the cause of the problem is not identified may cause damage to or separation of the catheter, and damage the blood vessel.Life-threatening adverse events may occur.); and, [malfunction and adverse effects] damage.
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It was reported that the tip of an asahi corsair pro microcatheter broke during a pci to treat a heavily calcified cto in the lad #7.The microcatheter became stuck in the lesion during manipulation, and therefore, it was difficult to remove it.When it was finally removed from the lesion, the tip was found damaged.A new corsair pro was replaced to successfully complete recanalization by stenting.There were no adverse patient effects after the procedure.
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