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(b)(4).The device was not returned for analysis.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other similar incidents from this lot.The xience alpine everolimus eluting coronary stent system instructions for use, states: the xience alpine stent system is indicated for improving coronary artery luminal diameter in patients.In addition, the xience alpine stent system is indicated for treating de novo chronic total coronary occlusions.The investigation determined the reported difficulties appear to be related to circumstances of the procedure.Based on the information reviewed, there is no indication of a product quality issue with respect to manufacture, design or labeling.
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