at the distal end 14 of the catheter 1 functions to maintain the structural integrity of the catheter and may have any length that provides that integrity in order to accomplish the purpose for which the particular catheter is used it is understood that the overall dimensions of the present invention can vary fig3 illustrates one embodiment of the invention one inlet hole is located at each of three inflow positions along the longitudinal axis of the catheter 1 each inlet hole 9 11 13 has a smaller cross sectional area 16 17 18 than the one preceding it fig4 illustrates another embodiment of the invention three round inlet holes are located at each inflow position 6 and 7 the cross sectional area of each inlet hole at inflow position 7 is less than the cross sectional area of each inlet hole at inflow position 6 in an exemplary embodiment the catheter 1 can be used to divert csf from the ventricles of a human brain in this embodiment the catheter 1 has a length that ranges from about 10 centimeters to about 50 centimeters the inner diameter 15 of the catheter ranges from about 1 0 millimeters to about 3 0 millimeters the progressive decrease in the inlet holes 9 11 13 cross sectional areas 16 17 18 need not be uniform however a method is herein described that results in near equal fluid inflow into the inlet holes 9 10 11 12 13 at each inflow position 6 7 8 the primary variable.