A visual inspection was performed on the returned device.The reported stent dislodgement was confirmed.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 similar incidents from this lot.The reported patient effect of embolism is listed in the xience sierra, everolimus eluting coronary stent system (eecss), electronic instructions for use as a known patient effect of coronary stenting procedures.The investigation was unable to determine a conclusive cause for the reported stent dislodgement.A conclusive cause for the reported patient effects, and the relationship to the product, if any, cannot be determined.Based on the information reviewed, 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 performed to treat a lesion in an unspecified vessel.Atherectomy was performed using a non-abbott device.The 3.5 x 28 mm xience sierra stent delivery system was then advanced.Resistance was noted at the target site and force was applied.The xience sierra stent dislodged and embolized to the left iliac artery.A balloon dilatation catheter was advanced to the dislodged stent, and inflated, crushing the stent to the vessel wall.Angiography noted that the stent appeared to be well crushed to the vessel wall.No additional information was provided.
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