Abstract A catheter for controlling the drainage of fluid from a body cavity, particularly cerebrospinal fluid from the ventricle of human brain in the treatment of hydrocephalus. The catheter is in the form of an elongated, hollow conduit having a plurality of apertures formed at one end in communication with the hollow interior of the conduit. A barrier is mounted on the conduit adjacent the apertures and is located between the apertures and the outflow or opposite end of the conduit. Preferably, the barrier is in the form of a cuff which is inflatable after insertion into the ventricle of the brain to indicate to the surgeon that the inflow end of the catheter has been accurately positioned within the ventricle of the brain and to space the apertures in the inflow end of the catheter a sufficient distance from the surrounding brain tissue and choroid plexus to prevent the growth or adherence of surrounding tissue over the apertures in the conduit.
A method for positioning a catheter in the ventricle of a brain comprising the steps of: forming a burr hole through the skull of the brain into a ventricle of the brain; inserting a flexible, hollow conduit having inflow and outflow ends with a plurality of apertures formed adjacent the inflow end disposed in fluid flow communication with the hollow interior of the conduit and having an inflatable cuff mounted on the conduit adjacent to the apertures and between the the apertures and the outflow end of the conduit into the ventricle of the brain; injecting a fluid into the cuff to cause inflation of the cuff; retracting the conduit after the cuff has been inflated through the bore hole in the brain until resistance is met to indicate that the cuff has engaged the walls of the ventricle of the brain and that the apertures in the conduit are spaced from the walls of the ventricle and the choroid plexus of the brain a sufficient distance to prevent the growth of choroid plexus over the apertures.
Claim 2
Independent Claim
177 words
A method for positioning a catheter in the ventricle of a brain comprising the steps of: forming a burr hole through the skull of the brain into a ventricle of the brain; inserting a flexible, hollow conduit having inflow and outflow ends with a plurality of apertures formed adjacent the inflow end disposed in fluid flow communication with the hollow interior of the conduit and having an inflatable cuff mounted on the conduit adjacent to the apertures and between the the apertures and the outflow end of the conduit into the ventricle of the brain; injecting a fluid into the cuff to cause inflation of the cuff; retracting the conduit after the cuff has been inflated through the bore hole in the brain until resistance is met to indicate that the cuff has engaged the walls of the ventricle of the brain and that the apertures in the conduit are spaced from the walls of the ventricle and the choroid plexus of the brain a sufficient distance to prevent the growth of choroid plexus over the apertures.