Di (b)(4).The device was not returned to edwards for evaluation.The device history record (dhr) was reviewed and shows that this device met all manufacturing specifications for product release prior to distribution.No issues were identified that would have impacted this event.Regurgitation which develops progressively over time can be due to a number of issues including patient related factors or structural valve deterioration.However, advances in valve design and bioprosthetic material have been made with the intention of reducing leaks by providing more efficient hemodynamics and longer tissue durability.A definitive root cause could not be determined.If additional information is received a supplemental mdr will be submitted.Edwards lifesciences will continue to monitor all reported events.No further actions are required at this time.
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