Multiple lumen hose

A dual lumen breathing circuit tube, comprising:

• a generally circumferential base wall defining a conduit, the base wall extending between a first end cuff and a second end cuff;
• a plurality of corrugations extending radially outward from the base wall;
• a plurality of first scallops extend outward from the circumferential base wall between adjacent corrugations;
• a plurality of second scallops extend outward from the circumferential base wall between adjacent corrugations, each second scallop of the plurality opposite a first scallop;
• and,
• a septum disposed interior of the base wall, scallops, and the corrugations, the septum being secured to the corrugations, first scallops, and second scallops, and the septum divides the conduit into a first lumen and a second lumen.

A method of manufacturing a dual lumen conduit, the method comprising:

• providing at least two molds comprising a plurality of depressions for forming a plurality of corrugations, a plurality of ridges for forming a plurality of uncorrugated regions and a plurality of cavities through the ridges for forming a plurality of scallops in the uncorrugated regions between the corrugations;
• placing an extrusion comprising a circumferential base wall and a septum interior to the circumferential base wall in contact with the at least two molds such that the at least two molds are conjoined about the extrusion;
• providing a differential pressure across the base wall, the pressure within the extrusion being greater than the pressure between the base wall and the mold;
• forming a plurality of corrugations in the base wall;
• and
• forming a plurality of scallops in the base wall in the uncorrugated regions, the scallops aligned about the septum.