(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.The device was not returned for analysis.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.The investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that as the stent delivery system was advanced, resistance was met with the moderately tortuous and heavily calcified anatomy resulting in the reported physical resistance and the reported difficulty to remove; thus resulting in the reported device operates differently than expected.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 performed to treat a de novo lesion with moderate tortuosity and heavy calcification in the proximal circumflex (cx) coronary artery.The 2.75 x 12 mm xience alpine stent was deployed at 16 atmospheres.A post market evaluation (pme) form was received with the performance rating as not satisfactory for the following criteria; push transmission, proximal hypotube tactile feeling, ability to cross the lesion, ability to pull back [due to the anatomy], ability to treat distal long lesions, and ability to treat large vessels.Regardless of this rating, there was no clinically significant delay in the procedure and no adverse patient effect.No additional information was provided.
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