... \" (0.127mm)Numerous lumen shapes.DescriptionDemax Medical Extrusion manufactures custom multi-lumen tubing in virtually any configuration. The number, size and ... limited only by the outer diameter, wall thickness, and material. Multi-Lumen tubing consists of two or more lumens. Lumen shapes ... used for guidewires, fluids, gases, wires, and various other needs. Multi-lumen Tubing