equipped with two chambers at one end dual lumen catheter 202 is in fluid contact with the dual chamber reservoir a first lumen of the dual lumen catheter is in fluid contact with a first chamber of the dual chamber reservoir a second lumen of the dual lumen catheter is in fluid contact with the second chamber of the dual chamber reservoir the other end of the dual lumen catheter is in fluid contact with the lateral ventricle of the patient 39 s brain thus the lateral ventricle is in fluid communication with the dual chamber reservoir alternately not shown two single lumen catheters may be utilized instead of the dual lumen catheter the dual or single lumen catheter may be comprised of a silicone elastomer according another embodiment of the present invention the first chamber of subcutaneous reservoir 204 may be injected with a medicinal dose of an ad drug e g neurochems 39 s alzhemed u2122 reported in u201c 7 ways to save a brain u201d newsweek special issue 2005 that attracts harmful protein e g a beta and tau or enzyme that eats digests a beta and or other harmful proteins the drug may be injected through the patient 39 s scalp into the first chamber of the subcutaneous reservoir using for example a needle and syringe the drug then may be infused through the first lumen of the dual lumen catheter into the lateral ventricle of the brain and thus directly into the cerebrospinal fluid after a.