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(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Evaluation summary: the stent delivery catheter was returned for analysis.The reported balloon material rupture was unable to be confirmed; however, there was a noted tear in the shaft.The reported difficult to deploy was unable to be replicated in a testing environment as it was based on operational circumstances.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 report of any leak in the catheter noted during preparation for use the investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that as the device was advanced interaction with the mildly tortuous, heavily calcified and 90% stenosed anatomy and/or interaction with other devices resulted in the torn shaft thus resulting in the reported rupture and the reported difficulty to deploy as the compromised device was inflated.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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It was reported that the procedure was to treat a mildly tortuous and heavily calcified, 90% stenosed, de novo lesion in the right coronary artery.A 3.0x28 mm xience alpine stent delivery system (sds) was advanced in the patient anatomy; however, during the first inflation attempt the balloon ruptured before reaching 12 atmospheres (atm).The stent was able to be implanted, but was not fully expanded.The sds was removed from the patient anatomy and a non-abbott balloon dilatation catheter was used to post-dilate the 3.0x28 mm xience alpine stent.There were no adverse patient effects and no clinically significant delay in the procedure.No additional information was provided.
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