The complaint was confirmed as a use-related issue.During visual evaluation, some calcification was noted on the entire stent surface and more encrustation was observed on the pigtails.The surface of the stent was inspected under magnification for any condition or visible defects which could have caused or contributed to the reported event.No conditions were found that would point to a manufacturing related issue.During functional testing, the calcification was removed and the stent was submerged under water.Upon removal from the water, it was observed that the coating had been activated and was present along the length of the stent.A manufacturing review was conducted and there was nothing found to indicate there was a manufacturing related cause for this event.The finished product met all specifications prior to being released for general distribution.(b)(4).
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