The certas valve (id 828804pl) was returned for evaluation.Device history record (dhr) - the product code 82-8804pl with lot 6025588, conformed to the specifications when released to stock.Failure analysis - the position of the cam when valve was received was at setting 3.The valve was visually inspected; the siphon guard was separated from the valve and a cut/tear in the silicon housing along the siphon guard was noted.The valve was hydrated.The valve was leak tested and only leaked from the needle hole in the needle chamber until the valve casing was noted.The valve could not be reflux tested due to separated siphon guard.The valve passed the test for programming, occlusion, siphon guard and pressure.The siphon guard was visually inspected under microscope at appropriate magnification: a needle mark was noted.The root cause for the problem reported by the customer could probably be due to a sharp or pointed object coming into contact with the silicone, as noted in the ifu, silicone housing has a low cut/tear resistance.
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