A review of the complaint history, drawings, device history record, manufacturing instructions, trends, quality control, and visual inspection of the returned device was conducted during the investigation.Thirty three-way plastic stopcocks were returned for investigation, twenty-nine unused and one used.Visual inspection revealed that the returned devices were cracked at the base of the stopcocks and leaked.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 were no other reported complaints for this lot number.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.Based on the information provided and the results of our investigation; a definitive root cause could not be determined.
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