Investigation summary: two unused samples were received for evaluation by our quality engineer.Upon visual inspection of the two samples, no damages or molding defects could be observed that would contribute to the alleged defect.A device history record review of lot 1612258p did not reveal any anomalies during the production of the provided lot number that could have contributed to difficult plunger movement.During the manufacturing process break out force, sustaining force, and silicone content tests are performed to ensure that all products are within specification.Break out force, sustaining force, and silicone content tests were performed on ten retained sampled of the same lot number as reported.All test results were within specification.As no issues were identified during the manufacturing process that could have contributed to the reported defect, a definite cause for this incident could not be determined.We can confirm that the root cause of the non-conformance is not related to a manufacturing defect.Based on severity and occurrence no formal capa is required according to internal procedure.
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