Cfn-(b)(4).Unfortunately the original complaint sample was not available for evaluation.The unopened samples that were submitted were tested using the following inspections: visual inspection, cycle test, concentricity test, leak test and also dimensional test of the thickness.The issue reported could not be confirmed with these samples.The device history record of the lot reported was evaluated for any issues, and no issues were found.Two years of complaints were reviewed from april 1, 2014 ¿ march 31, 2016 and no trend was observed.The manufacturing process has a 100% visual inspection, and the product must also pass the leak tester.In addition, our quality personnel perform a sampling with the following inspections: visual inspection, concentricity inspection, leak test and also dimensional inspection of the thickness.Without the original complaint sample available for evaluation it is not possible determine if the material is related to this failure.Based on the investigation, at this time it is not possible to determine a root cause for the issue reported.No corrective action will be implemented at this time without a confirmed root cause.
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