It was reported that this procedure was to treat the mid left anterior descending (lad) coronary artery with heavy calcification and mild tortuosity.The lesion was pre-dilated and then the 2.50x23 mm xience skypoint stent delivery system (sds) was advanced.During inflation, the indeflator failed to increase pressure on the first and only attempt to 9 atmospheres (atm).A leak of contrast was noted so a balloon rupture was suspected and the stent failed to deploy.The xience skypoint sds was removed and the procedure continued with the same indeflator, balloon dilatation and the use of a 2.5x24 mm non-abbott sds.There were no adverse patient effects and there was 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 and material rupture were not 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.Factors that may contribute to activation failures include, but are not limited to, contamination in the inflation lumen, patient anatomical morphology, patient disease state, inflation technique, contrast dilution, and inadequate connection to the inflation device.The investigation was unable to determine, a conclusive cause for the reported difficulties, as the activation failure and material rupture were not confirmed, during return device evaluation.There is no indication, of a product quality issue with respect to manufacture, design or labeling.
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