Investigation summary: no actual sample was returned for evaluation.14 retained samples have been tested on thread function and clog test, all results meet the specification.Dhr of lot 7061488 was reviewed and no qn found.Manufacture records 7061488 were reviewed, no abnormality was found.Investigation conclusion: after customer visit and feedback from sales representative, it was determined that the incident was caused by customer since he didn¿t install pen needle into injection pen directly.This would cause needle clog to occur.Root cause description: based on the investigation, an exact root cause could not be determined.Bd was not able to duplicate or confirm the customers indicated failure mode.Rationale: as it was determined the incident was not related to a manufacturing process, no formal corrective action is required.
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