It was reported that the procedure was a bifurcation to treat a de novo lesion in the diagonal artery with 75% stenosis, no calcification and mild tortuosity.The 2.5x18mm xience alpine stent delivery system (sds) was prepared (air aspiration) outside the anatomy prior to use without issues.The sds had no resistance during advancement and was positioned at the origin of the side branch but could not be inflated.When removing the sds, the balloon was noted to be perforated.There was no adverse patient effect and there was no clinically significant delay in the procedure.No additional information was provided.
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A visual and functional inspection was performed on the returned device.Although the reported balloon rupture was unable to be confirmed, it is possible that the torn shaft discovered during return analysis was responsible for the reported difficulty.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/complaints from this lot.The investigation determined the reported material rupture / torn shaft appears to be related to the operational context of the procedure.In this case, return analysis noted a bunched inner and outer member, indicating the device likely interacted with the mildly tortuous and 75% stenosed lesion, or an accessory device during advancement.Interaction with an accessory device or anatomy likely contributed in the noted torn shaft, resulting in the reported difficulty during balloon inflation.There is no indication of a product quality issue with respect to manufacture, design, or labeling.
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