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Intracranial catheters designed to be introduced into brain cavities that are filled with cerebrospinal fluid (CSF). These catheters are used for external drainage, pressure measurements, and radiographic procedures (ventriculography); some devices allow drainage of CSF from the ventricle or injection of fluid into the ventricle while simultaneously measuring intracranial pressure. Ventricular intracranial catheters may also be used for treatment of hydrocephalus.
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