Investigation: review of dhr revealed all required challenge samples and testing was conducted per specifications and in accordance with the in-process sampling plans.Review disclosed no related reject activity findings throughout the build of this lot that would impact the outcome of the quality of the product relevant to the defect stated in the pir.Observations and testing could not be performed because units were not received for investigation of this incident.Confirmation of the defect of needle retraction failure as stated in the pir could not be identified or confirmed and cause could not be determined, as the unit described in the product incident report was not returned for evaluation and testing.Therefore, there was no physical/mechanical evidence to confirm or to support manufacturing process related issues for the defects stated in the pir.This incident is indeterminate.Unable to confirm the customer¿s experience because units were not returned for evaluation and testing.Unable to reproduce the customer¿s experience because units were not returned for evaluation and testing.Without a sample, an absolute root cause for this incident cannot be determined.
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