(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.The device was not returned for analysis.A review of the lot history record revealed no manufacturing non-conformities that would have contributed to this complaint.Additionally, a review of the complaint history identified no similar incidents from this lot.The investigation determined the reported difficulties appear to be related to circumstances of the procedure.There is no indication of a product quality issue with respect to the design, manufacture or labeling of the device.
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It was reported that the procedure was to treat a heavily calcified lesion in the obtuse marginal coronary artery.The xience sierra stent was deployed, but the proximal stent was not fully apposed to the vessel wall due to the calcification.Post-dilatation was attempted, but the balloon could not cross into the stent.There was no reported adverse patient sequela or a clinically significant delay in procedure.No additional information was provided.
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