(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.There was no reported device malfunction, and the product was not returned.The reported patient effect of thrombosis is a known observed and potential patient effect as listed in the xact carotid stent system instruction for use (ifu).Although a conclusive cause for the reported patient effects, and the relationship to the product, if any, cannot be determined, there is no indication of a product quality deficiency with respect to manufacturing, design or labeling.A review of the lot history record revealed no non-conformances that would have contributed to the reported event.
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