A review of the complaint history, drawings, device history record, trends, manufacturing instructions, quality control, and visual inspection / functional testing of the returned device was conducted during the investigation.One used three-way plastic stopcock was returned for investigation.Two cracks were noted at the base of the stopcock.Crack 1 is 4mm in length, and crack 2 is 2mm in length.Stopcock leaked during leak test.There is no evidence to suggest the finished product was not made to specifications.Review of the device history record of the finished product shows no nonconforming events that would contribute to this failure mode.There was one other reported complaint for this lot number, also for leakage.Based on the information provided and the results of our investigation, a definitive root cause could not be determined.Measures have been conducted to address this failure mode.Monitoring will continue to be performed for similar complaints.
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