Valve for the treatment of hydrocephalus
A subcutaneous valve is provided for the treatment of hydrocephalus adapted to be inserted between a ventricular catheter and a distal catheter. The valve comprises a body enclosing a chamber having formed through its cylindrical wall an inlet and outlet passage for cephalorachidian fluid. A rotor i...
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Main Author | |
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Format | Patent |
Language | English |
Published |
16.06.1987
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Edition | 4 |
Subjects | |
Online Access | Get full text |
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Summary: | A subcutaneous valve is provided for the treatment of hydrocephalus adapted to be inserted between a ventricular catheter and a distal catheter. The valve comprises a body enclosing a chamber having formed through its cylindrical wall an inlet and outlet passage for cephalorachidian fluid. A rotor is journaled in the chamber for rotation about the chamber axis. A spring blade, fixed to the rotor extends arcuately along a cylindrical wall, bearing deflectably outwardly against a valve member and slides thereon to bias the member against a valve seat with a force depending on the angular position of the rotor and the chamber. The rotor is a disk in the form of a cut-out circular sector having a peripheral surface and two radial end surfaces. A stop means extends from a bottom wall of the chamber between the radial end surfaces of the rotor. The foregoing valve avoids the siphon effect when a patient moves between vertical and horizontal positions and is easily calibrated at any desired closing pressure for implantation. |
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Bibliography: | Application Number: US19860851326 |