(b)(4).An avalon elite french catheter was delivered to the factory in a biokit.The catheter was curved on arrival, probably due to the way it was packed for returning to the factory.The catheter was examined and tested for kinks.When flexing the catheter with the inlet of the catheter pointing outwards, no sign of kinking was found.When flexing the catheter with the inlet of the catheter pointing inwards, a kink was found at the end of the wire reinforcement near the infusion outlet (right atrium).The issue was referred to r&d at maquet.The initial assessment was that the customer's reported issue is consistent with the catheter having been used without the introducer.The complaint/evaluation results were forwarded to avalon laboratories, the manufacturer.The product engineer manager at avalon evaluated the issue using retains from the same batch, and a scrap introducer, to try to replicate the failure.In his opinion, the most probable root cause is user error by not using the introducer during insertion or not having the introducer advanced far enough past the tip of the catheter.The ifu instructs the user to always use the introducer otherwise a kink may occur: "caution! never advance, position, or place the catheter without the introducer as this may kink and damage the catheter." the fact that no introducer was returned supports that an introducer was most likely not used.No further investigation or action is not possible and th complaint will be closed.This is the final report.
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