A catheter for placement into the ventricular system of the brain of a
subject comprising a flexible elongated body having a wall thickness
sufficient to contain and transport fluid therein and having a forward end
and tip for insertion into the ventricular system of the brain of a
subject; and a plurality of spaced apertures located in the forward end of
the body spaced from the tip, each of the apertures extending through the
wall thickness at an angle such that a portion of the wall thickness is
visible when viewing the aperture perpendicular to the longitudinal axis
of the body, thereby to minimize abrasion of brain tissue upon insertion
of the catheter and to prevent choroid plexus and ependymal tissue from
growing into the catheter apertures, thereby providing improved flow of
fluid into or from said ventricular system. Also, methods of using and
apparatus for making such catheters are disclosed herein.