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Visual inspection: scratches on the housing surface of the m.Blue®.Deposits in the pediatric cotrol reservoir.Permeability test: a permeability test has shown that the m.Blue® has a blockage, the reservoir is permeable.Adjustment test: the m.Blue valve was tested and is not adjustable throughout the normal range.Braking force and brake function test: the brake functionality test has shown that the brake function operates as expected.However, the click force could not be measured due to the non-adjustability.Computer controlled test: because the valve is not permeable, a computer controlled test is not applicable.Internal inspection: after dismantling of the valve, deposits were found in m.Blue results: for the sake of thoroughness and transparency, we would like to point out that a permeability test was already carried out after the revision at the hospital.Based on our investigation, we can determine a blockage and a non-adjustability of the m.Blue at the time of our investigation.The detected deposits can be named as the cause for the functional impairment.We can exclude a defect at the time of release.The shunt system 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.
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