Cerebrospinal fluid shunt

Surgery – Devices transferring fluids from within one area of body to...

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604175, 604264, A61M 500

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active

054053161

ABSTRACT:
A cerebrospinal fluid shunt includes an inner tube for supplying the fluid only from brain ventricles to the peritoneum region of a subject and an outer tube arranged so the fluid remains resident in the outer tube without flowing to the peritoneum region. Fluid in the outer tube exerts pressure through a wall of the inner tube on the fluid in the inner tube to regulate flow of the fluid through the inner tube to the peritoneum region. The shunt includes a catheter including plural openings through which the fluid flows. The openings are arranged so tissue growth through the openings does not occlude flow of the fluid within the catheter. The catheter and shunt having an external pressure responsive collapsible wall and an internal spring for inhibiting catheter collapsing and kinking.

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