Patent ID: 7972465

Claim:
A method of making a multi-lumen catheter, comprising: creating an assembly, comprising: providing a first catheter body substrate comprising a first lumen and a second catheter body substrate comprising a second lumen, each substrate having a substantially semi-circular cross-sectional shape; inserting a first mandrel into the first lumen and a second mandrel into the second lumen, wherein the first and second mandrels extend beyond both proximal and distal ends of the substrates; arranging the first and second substrates to form a substantially circular cross-sectional shape; positioning a reinforcing element over at least a proximal region of the first and second substrates; positioning a sleeve over the reinforcing element and first and second substrates; inserting a shim between the first and second substrates at a distal end thereof; heating the assembly; and cutting the sleeve along the position of the shim and removing the shim.