A method of making a tube sump with integral clips from a single material modifies multiple lumen tubing of any material that allows for two or more lumens. Preferably, the tubing is a plastic polymer with dual lumens. One lumen functions as a suction tube and the other lumen undergoes modification to form tubular clips. The modification removes a pattern of tubing opposite the suction tube to form integral clips that retain the tube sump upon an existing endotracheal tube. The removed sections of lumen may have any length or number. Common methods to remove the lumen sections include mechanical cutting, sawing, laser cutting, thermal cutting, melting, ablating, and shearing. Alternatively, the clips may be formed during the manufacture of the multiple lumen tubular product.