Patent ID: 8617114
Filing Date: 2013-12-31
Classification: A61M

Abstract:
1. A balloon catheter comprising: an inner shaft member having a proximal end portion, a distal end portion, and a length therebetween, the inner shaft member defining a guidewire lumen therein, the guidewire lumen having a distal port; an outer shaft member movable relative to the inner shaft member between an initial delivery condition and a deployed condition, the distal port of the guidewire lumen being exposed to an environment external to the outer shaft member when the inner shaft member is in the initial delivery condition relative the outer shaft member, the outer shaft member having a proximal end portion, a distal end portion, and a length therebetween; an annular flow passage disposed between the inner and outer shaft members; a flexible membrane attached to and extending between the distal end portion of the inner shaft member and the distal end portion of the outer shaft member; and wherein the flexible membrane includes an inner surface and an outer surface, the inner surface configured in fluid communication with the annular flow passage, and further wherein the outer shaft member and the inner shaft member define a chamber in the initial delivery condition configured to receive the flexible membrane rolled in a generally axial direction therein.