Patent ID: 7472705

Claim:
A method of forming a catheter for nebulizing a liquid with a gas, the catheter having closely spaced distal orifices comprising: providing a multilumen extruded polymer tubing; heating a portion of the tubing to a transition temperature of said tubing; forming a j-shaped distal section in the multilumen extruded polymer tubing at a distal end of the catheter, wherein the multilumen extruded polymer tubing in the j-shaped distal section maintains a shape at rest that curves away from a longitudinal axis of the catheter; and forming a plurality of orifices at the j-shaped distal section, said plurality of orifices being sized to nebulize a liquid delivered through one of said lumens to form an aerosol with a gas delivered through another of said lumens, wherein the j-shaped distal section is maintained in an orientation having the plurality of orifices pointing substantially towards a proximal end of the catheter.