Unique device identifier (udi): (b)(4).The valve was returned for evaluation: review of the history device records for lot cvfctf, conformed to the specifications when released to stock.Failure analysis - the valve was visually inspected, a needle hole was noted in the silicone housing.The position of the cam when valve was received was 30mmh2o.The valve was hydrated.The valve was leak tested and only leaked from the needle hole in the silicone housing.The valve passed the test for programming, occlusion, reflux and pressure.No root cause could be determined as the technician could not confirm any problem with the valve at the time of investigation.No root cause was determined for the infection issue, as noted in additional information: the physician commented that the valve is not related to infection.
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