B3, b6: dates were estimated.The device was returned for analysis.The reported activation failure including expansion failures/difficult to deploy was able to be confirmed.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 incidents from this lot.As there was no report of a leak during preparation for use, the investigation determined the reported difficulties appear to be related to circumstances of the procedure as it is likely that inadvertent mishandling/over torqueing during connection to the inflation device resulted in the noted longitudinal crack on the proximal end of the hub; thus resulting in the reported activation failure including expansion failures.There is no indication of a product quality issue with respect to manufacture, design or labeling.D4: expiration date.
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