It was reported that the procedure was performed to treat a lesion in the heavily calcified proximal left anterior descending coronary artery.After pre-dilatation with an unspecified non-compliant balloon, a 3.5x23mm xience sierra stent delivery system (sds) was advanced without resistance, but the balloon completely failed to inflate.The stent was not deployed, and the sds and stent were removed.Outside the patient, the balloon was attempted to be inflated again, when contrast was noted to be leaking from the balloon.A same sized xience sierra was used to successfully complete the procedure.There were no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.
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The device was returned for analysis.The reported activation failure including expansion failures and the reported material rupture were able to be 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 other incidents from this lot.As there was no report of a leak during preparation for use, the investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that during advancement interaction with the heavily calcified anatomy resulted in compromising the balloon (noted scratched balloon material) such that during inflation resulted in the reported activation failure including expansion failures and the reported material rupture.There is no indication of a product quality issue with respect to manufacture, design or labeling.Na.
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