It was reported that the procedure was to treat a heavily calcified, moderately tortuous right coronary artery that is 80% stenosed.The vessel was prepared with orbital atherectomy and pre-dilatated with non-compliant 2.25mm and 2.5mm balloons.Buddy wire techinque was used with two non-abbott guide wires and a 2.75x33mm unspecified xience was attempted to be implanted at the distal portion of the lesion; however, was not able to advance all the way distally.The buddy wire was removed and the stent deployed from mid to proximal just after the first curve of the artery.Post dilatation was performed with a 3.0x12mm non-compliant balloon.A micro-catheter was used to deliver a 2.75x15mm xience sierra distally and post dilate with a non-compliant balloon.Finally, a 3.5x23mm xience sierra stent delivery system was attempted to be advanced; however, failed to cross due interaction with the 2.75x33mm xience stent that was previously implanted.Despite using the buddy wire, micro-catheter, further dilatation of the vessel, change of the sheath, the stent still failed to cross.Therefore, a non-abbott was used to successfully complete the procedure.There was no adverse patient effects and no clinically significant delay.No additional information was provided.
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The device was not returned for analysis.The lot history record and exception reviews were performed and revealed no indication of a product quality issue.Additionally, a review of the complaint history identified no other 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 manufacture, design or labeling.
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