Thrombolysis catheter system with fixed length infusion zone

A catheter for administering therapeutic agent to an obstruction within a vascular system, the catheter having a fixed dimension infusion zone and consisting essentially of a single cylindrical catheter body, the catheter body comprising:

• a. a wall, the wall having;
• b. distal and proximal ends, the distal and proximal segments ends each having located thereon:
• c. a at least two balloons, the wall further including:
• d. a primary interior lumen, said primary lumen extending through said catheter body to couple, fluidically, said orifices and said distal and proximal ends, said primary lumen having a proximally located larger diameter segment extending the majority of the length of said catheter body, and a smaller diameter segment located interiorly adjacent said distal end of said catheter body and distal to said orifices, said reduced diameter segment being adapted to cooperate with an occluder means to restrict fluid flow out the distal end of said primary lumen;
• and
• f. second and third lumen, said second and third lumen being in fluid communication with said balloons and said proximal end of said catheter body so as to permit said balloon to be inflated thereby, the catheter body further comprising:
• g. a plurality of radiopaque indicia, said indicia being located on said body to indicate, under fluoroscopic examination, the location of the balloons and the distal end of the catheter.