(b)(4).Estimated weight.There was no reported device malfunction and the product was not returned.The reported patient effects of neurological complications and restenosis are known observed and potential patient effects as listed in the xact carotid stent system instruction for use.A review of the lot history record revealed no non-conformances that would have contributed to the reported event.Although a conclusive cause for the reported patient effects and the relationship to the product, if any, could not be determined, there is no indication of a product quality deficiency with respect to manufacturing, design or labeling.
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