(b)(4).It was not possible to perform a thorough analysis on the product because it was not returned for investigation.In this case, there were no reported device malfunctions or product deficiencies.The reported patient effects of angina, ischemia, and myocardial infarction, are listed in the promus everolimus eluting coronary stent system instructions for use (ifu) as known patient effects of coronary stenting procedures.Although a conclusive cause for the reported patient effects and the relationship to the device if any cannot be determined, there is no indication of a product quality deficiency with respect to manufacture, design, or labeling.
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