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Investigation - evaluation: a review of the complaint history, dimensional verification, device history record, documentation, instructions for use (ifu), functional testing, manufacturing instructions, quality control and visual inspection of the returned device was conducted during the investigation.One used vital port was returned for evaluation.The device was visually examined and functionally tested for device occlusion.The catheter length from the port base to the catheter end was approximately 43.6cm.The port, the catheter and catheter lock were assembled when received.There was no calcification or burnishing on the catheter; all surfaces were smooth, no nicks, abrasions or punctures could be seen with increased magnification.The septum showed signs of needle marks.There was no evidence that the suture holes were utilized as the ifu indicates.Both the port and the catheter were not occluded.A document based investigation evaluation was also performed.There is no evidence to suggest the product was not made to specifications.Review of device history record shows no nonconforming events which could contribute to this failure mode.It should be noted there were no other reported complaints for this lot number.Based on the information provided, examination of the returned device and the results of our investigation, a definitive root cause could not be determined.We will continue to monitor for similar complaints.Per the quality engineering risk assessment no further action is required.
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