(b)(4).Evaluation summary: the device was returned for analysis.The difficulty deploying the stent was able to be confirmed.In addition, the distal end of the stent was noted to be exposed.Based on a visual and functional inspection of the returned device, there is no indication of a product deficiency.A review of the lot history record revealed no non-conformances that would have contributed to the reported event.A query of the electronic complaint handling database revealed no other incidents for failure to deploy reported from this lot.Based on the reviewed information, no product deficiency was identified.
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