Investigation: visual inspection: during the investigation, scratches on the outer housing of the valve, but no significant deformation or damage was determined.Permeability test: a permeability test has indicated that the valve has a blockage.Computer control test: because the valve is not permeable, a computer control test is not applicable.Adjustment test: the m.Blue was tested and is not adjustable.Braking force and brake function test: the brake functionality test has shown that the brake function is operational.The braking force cannot be measured due to the non-adjustability of the valve.Internal inspection : after dismantling of the valve, deposits were found inside.Result : based on our investigation results, we can determine a blockage and a non- adjustability at the valve.The determined deposits can be named as the cause for the functional deviations.Organic deposits in the cerebrospinal fluid can influence the function temporarily and are known side effects in hydrocephalus therapy.We can exclude a defect at the time of release.The valve met all specifications of the final inspection when released from christoph miethke gmbh & co.Kg.No further regulatory actions are required from our point of view.
|