A physician reported that on september 3, 2020 the certas valve was implanted via an l-p shunt with a setting of 3.The valve was used with the silascon® lumbar catheter (manufactured by kaneka, product code: 702-jj).On (b)(6) 2020 the valve setting was unable to be change from 3.Therefore, the valve was replaced with a new one.
|
Udi: (b)(4).The certas valve was returned for evaluation: failure analysis: the valve was visually inspected; needle holes in the needle chamber were noted.The valve passed the tests for programming, occlusion, reflux, siphon guard and pressure.The valve was leak tested; only leaked from the needle holes in the needle chamber.The catheter was irrigated, no occlusions noted.No root cause could be determined for the problem reported by the customer as the technician could not confirm any programing issues 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 programing issues were noted.
|