Device avail.For eval, returned to mfr.On, device returned to mfr., device evaluated by mfr: returned product consisted of an opened carton labeled as nc emerge mr 2.50mm x 12mm batch 21985731 with an opened pouch and used device from emerge mr 2.25mm x 12mm batch 21477078.The balloon is loosely folded with contrast in the inflation lumen and balloon.The hoop was not returned.Although it was reported that the device was not used, the presence of contrast media in the lumen and balloon is indicative of handling beyond simply unpackaging the device, as was reported.The device packaging, outer shaft, inner shaft, balloon and tip were visually and microscopically examined.There are numerous hypotube kinks.Inspection of the remainder of the device revealed no damage or irregularities.There was no evidence of any material or manufacturing deficiencies contributing to the damage.The manufacturing batch record review confirmed that the device met all material, assembly and performance specifications.The investigation conclusion is not confirmed - returned as there was no evidence of either the alleged issue(s) or any defect which could have contributed to the event.(b)(4).
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