(b)(4).There was no reported device malfunction and the product was not returned.A review of the lot history record revealed no non-conformances that would have contributed to the reported event.The reported patient effect of restenosis, as listed in the xience xpedition everolimus eluting coronary stent system instructions for use is a known patient effect that may be associated with use of a coronary stent in native coronary arteries.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 issue with respect to manufacturing, design or labeling.
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