Updated fields - d1, d2, d4, d10, g4, g7, h2, h3, h4, h6, h10.Unique device identifier (udi) : (b)(4).The hakim valve was returned for evaluation: review of the history device records for the valve, product code 82-3162 with lot 3621625, conformed to the specifications when released to stock on the 23rd april 2019.Failure analysis - the valve was visually inspected, no defects noted.The position of the cam when valve was received was 70mmh2o.The valve was hydrated.The valve passed the for programming, occlusion, leaks, reflux, siphon guard and pressure.No root cause could be determined as the technician could not confirm any problem with the valve at the time of investigation.The possible root cause for the issue reported by the customer could be due to biological debris and protein build up this could interfere with the valve mechanism, but at the time of investigation no issues were noted.
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