It was reported that the procedure was to treat a de novo lesion located in the distal right coronary artery that was both moderately calcified and tortuous and 90% stenosed.A xience xpedition stent system was advanced to the target lesion, and during attempted deployment, the stent balloon completely failed to inflate even with 12 atmospheres of pressure.The stent delivery system was removed and the procedure was completed with another same size xience.There were no reported 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/ failure to deploy was able to be confirmed as a longitudinal tear on the outer member was noted.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.As there was no damage noted to the device during the inspection prior to use and 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 inadvertent mishandling and/or interaction with the moderately calcified, tortuous and 90% stenosed anatomy/ or other devices resulted in the noted longitudinal tear on the outer member; thus resulting in the reported activation failure including expansion failures/ failure to deploy.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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