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(b)(4).Investigation - evaluation: a review of the complaint history, device history record, instructions for use (ifu), quality control, and visual inspection of the returned device was conducted during the investigation.One crosscath support catheter was returned for evaluation.Three wire guides were stuck inside the catheter.Review of device history record shows two nonconforming events.There were no other reported complaints for this lot number.The device is shipped with an instruction for use (ifu) that state: "through a previously introduced, appropriately sized guiding catheter or sheath, insert the crosscath over an appropriately sized wire guide using standard technique.Under fluoroscopic guidance, carefully advance the catheter to the desired location, making sure that the wire guide tip extends beyond the catheter tip at all times.Final positioning is accomplished by short advances of the wire guide and catheter until the desired position is achieved and then confirmed by fluoroscopic visualization¿.Based on the information provided and results of the investigation, a definitive root cause could not conclusively be determined.Per the risk assessment, no further action is required.Monitoring will continue to be performed for similar complaints.
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