It was reported that the procedure was to treat a mildly tortuous and mildly calcified mid-left anterior descending artery.The patient presented with st-elevated myocardial infarction (stemi).Therefore, a 2.5 x 23 mm xience alpine was used but the stent got stuck on an unspecified guide wire.This occurred outside the anatomy.The stent was sticking on the guide wire which was inside the anatomy, so it was difficult to advance the stent delivery system over the guide wire.Therefore, the stent delivery system was removed independently, and a 2.5 x 18 mm xience alpine was used to successfully complete the procedure with the same guide wire.There was no clinically significant delay in the procedure and no adverse patient effects.No additional information was provided.
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(b)(4).Evaluation summary: the device was returned for analysis.There was an unknown contamination inserted in the guide wire exit notch.The reported difficult to position and difficult to remove using a guide wire was unable to be replicated in a testing environment due to the condition of the returned device.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.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 on the guide wire the noted contamination was introduced into the guide wire exit notch resulting in the reported difficult to position and difficult to remove.There is no indication of a product quality issue with respect to manufacture, design or labeling.
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