Patent ID: 7862576

Claim:
An angioplasty balloon catheter for administering therapeutic agents or aspirating body fluids, the angioplasty balloon catheter, comprising: an elongate flexible tubular body having a proximal end and a distal end, the body having an outer wall and an inner wall and capable of gaining access into a patient's coronary vessel or non-coronary vessel; a therapeutic lumen defined by the inner wall, the therapeutic lumen having a substantially uniformly circular cross-section from the proximal end to the distal end, the therapeutic lumen having a diameter between about 0.01 inches to about 0.09 inches; a therapeutic port at the proximal end of the tubular body and a therapeutic mouth at the distal end of the tubular body, the therapeutic port being in fluid communication with the therapeutic lumen and the therapeutic mouth; a guidewire lumen having a proximal end and a distal opening, wherein the guidewire lumen is adapted to receive a standard-size coronary guidewire therethrough, the guidewire lumen connected to the tubular body and adjacent the therapeutic lumen such that the therapeutic lumen and the guidewire lumen near the distal end form essentially a figure eight configuration, and such that said therapeutic lumen is unobstructed by said guidewire lumen, wherein the guidewire lumen is provided on the interior of the tubular body, and wherein the distal opening of the guidewire lumen is distal to the therapeutic mouth, the therapeutic mouth facing away from the guidewire lumen, whereby the guidewire lumen remains unobstructed during operation; and an inflation channel extending through the tubular body and capable of delivering inflation pressure to an angioplasty balloon.