Patent ID: 8267953
Filing Date: 2012-09-18
Classification: A61B,A61F,A61M

Abstract:
1. A method of applying a therapeutic agent with an angioplasty balloon catheter apparatus, the method comprising: providing an elongate flexible tubular body having a proximal end, a distal end, an outer wall, and an inner wall for insertion into a vessel; defining within the tubular body 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, the therapeutic lumen having a therapeutic port at the proximal end and a therapeutic mouth at the distal end, the therapeutic port being in fluid communication with the therapeutic lumen and the therapeutic mouth; providing a guidewire lumen adjacent the therapeutic lumen and having a proximal end and a distal opening, the guidewire lumen being adapted to receive a standard-size coronary guidewire therethrough, and positioning the guidewire lumen adjacent to the therapeutic lumen such that the therapeutic lumen and the guidewire lumen near the distal end form essentially a figure eight configuration, wherein the guidewire lumen is provided on the interior of the tubular body, and positioning the guidewire lumen to extend distally from the therapeutic mouth; providing an inflation channel extending through the tubular body and capable of delivering inflation pressure to an angioplasty balloon of the catheter; and coupling a therapeutic source to the therapeutic port for establishing fluid communication with the therapeutic port for delivering a therapeutic agent to the therapeutic lumen.