Patent ID: 8469989
Filing Date: 2013-06-25
Classification: A61M

Abstract:
1. A coaxial balloon catheter comprising: an outer tubular member including a passageway about a longitudinal axis and a distal end; an inner tubular member including a lumen and a distal end, the inner tubular member situated within the passageway of the outer tubular member to define an annular lumen, the annular lumen configured to receive an inflation fluid; a balloon member having a proximal end region, a distal end region, and an intermediate working region therebetween, the proximal end region attached to the outer tubular member, the distal end region attached to the inner tubular member, the balloon member defining a balloon interior in communication with the annular lumen, where the balloon member is movable between an inflated state when the balloon interior receives the inflation fluid from the annular lumen and a deflated state when the inflation fluid is removed from the balloon interior; and a support sleeve comprising a wall disposed around a portion of the inner tubular member proximate the proximal end region of the balloon member, the support sleeve being fixed to the inner tubular member while being unattached to the outer tubular member, the inner and outer tubular members thereby being movable relative to each other, the wall of the support sleeve having a removed portion defining a channel formed therein between longitudinal edges of the wall and confronting surfaces of the outer and inner tubular members, the channel communicating with the annular lumen and the balloon interior, and an outward extending portion sized to engage the distal end of the outer tubular member in order to limit relative movement between the inner and outer tubular members.