Surgery – Devices transferring fluids from within one area of body to... – With flow control means
Patent
1985-12-23
1987-06-30
Truluck, Dalton L.
Surgery
Devices transferring fluids from within one area of body to...
With flow control means
116204, A61M 2700
Patent
active
046767720
ABSTRACT:
A non-invasively adjustable cerebrospinal fluid pressure relief valve includes a magnetized element which is positionable, through application of an external magnetic field, to permit post-implantation adjustment of the valve's opening threshold pressure setting. An indicator for non-invasively ascertaining the relative adjustment setting of the valve following implantation includes a magnetic pointer which rotates to a position in alignment with the magnetic field produced by the magnetized element. To provide a reference against which the relative valve setting can be measured, the indicator includes an alignment structure which repeatably orients the indicator relative to the implanted valve.
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Cordis Corporation
Truluck Dalton L.
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