Abstract: A surgical implant and method of surgically inserting the implant into the skull of a patient to gain access to cerebrospinal fluid within the lateral ventricles. The implant includes an annular housing defining thereon a flared base and a tubular member which projects outwardly from the housing. The implant is embedded in the skull such that the tubular member projects into a predefined opening in the skull and the base is positioned adjacent the outer surface of the skull. The implant is secured to the skull with adhesive which is applied to the base member. The implant defines an opening which extends therethrough, and serves a guide channel for directing a surgical instrument into the lateral ventricle.