Explant due to stenosis was reported.The investigation found that all three leaflets contained calcifications and had fibrous thickening.There was also fibrous pannus ingrowth on the inflow and outflow surfaces of all three leaflets.Leaflet 2 was torn, with the tear being associated with a calcification.No inflammation was noted.The device history record was reviewed to ensure that each manufacturing and inspection operation was performed and the product met all specifications.The calcifications, fibrous thickening, and pannus found on the valve could have contributed to the reported stenosis.There is no indication of a product quality issue with regards to manufacture, design, or labeling.
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