Device history record review: device history record review showed no non-conformances associated with this manufacture lot.Fatigue test certifications show with 95% confidence that 99% of this manufacture lot of needles will pass a minimum of 24 cycles.This failure mode is a known failure mode addressed in the risk management file for this product, and does not exceed expected occurrence rates.Occurrence rates are monitored for trends.Root cause(s):.Where the product was not returned for evaluation and the incident comments do not contain any details an exact root cause could not be determined.A possible cause could be use of the product in a manner other than described in the instructions for use included with the product.
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