Udi: (b)(4).The perforator was returned for evaluation: dhr- there is no indication that the production process may have contributed to this complaint.All test results passed procedural specifications.Failure analysis: the perforator unit was inspected using the unaided eye.No anomalies were observed, the outer drill had heavy damage not related to manufacturing, there was organic matter and worn eto label.Ifu testing was performed with no observed anomalies.Functional testing was performed using the same protocol it underwent at finished goods testing prior to release and the unit was found to perform as intended and fulfilled the acceptance criteria.In the failure analysis that was performed, the returned unit was found to work as intended, and met all acceptance criteria.The root cause is undetermined and was unable to be confirmed in the complaint evaluation.
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