Investigation - evaluation a review of the complaint history, drawing, device history record, manufacturing instructions, quality control, functional testing and visual inspection of the returned device was conducted during the investigation.Two used and two sealed three-way plastic stopcock were returned for evaluation.The two used stopcocks exhibited cracks and leaked during testing.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 that this is the third complaint reported for the failure (leakage) for this lot number.Based on the information provided and the results of the investigation, a definitive root cause could not be determined.Measures are being conducted to address this failure mode.We will continue to monitor for similar complaints.
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