A facility reported the certas plus small was implanted to a (b)(6)-year-old patient on (b)(6) 2020 with a setting of 5.It worked at setting 5 for two days.Then the patient started to have headache and nausea, and it was dialed up to setting 7.The patient continued to have symptoms, so a nuclear shunt study was completed which showed free flow of fluid through the shunt system despite the icp being only 4 to -30.Once partially explanted, in vivo testing showed that despite at setting 7 (high pressure) fluid freely flowed through the peritoneal catheter at a high rate without stopping (patient at 0 level).The valve was explanted on (b)(6) 2020 and a bactiseal evd catheter was placed.A competitor¿s valve was placed on (b)(6) 2020.
|
The valve was returned for evaluation.Review of the device history records was not possible as the lot number was unknown.Unique device identifier (udi): (b)(4).Unique device identifier (udi): (b)(4).Failure analysis - the valve was visually inspected, no defects were noted.The position of the cam when valve was received was at setting 7.The catheters were irrigated; no occlusions noted.The catheters were leak tested; no leakage was noted.The valve passed the test for programming, leak, occlusion, ref; ux, 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.
|