Patent ID: 8906049
Filing Date: 2014-12-09
Classification: A61B,A61M

Abstract:
1. A balloon catheter comprising: a shaft having a distal end and a proximal end; an expandable inner balloon mounted at the distal end of the shaft, the shaft having an inflation lumen extending therethrough and in fluid communication with an interior region of the inner balloon, an expandable outer balloon positioned around the inner balloon and defining an intermediate region between the inner balloon and the outer balloon, the shaft having a delivery lumen extending therethrough and in fluid communication with the intermediate region, and a cutting element positioned on an exterior surface of the outer balloon; wherein the cutting element comprises a blade extending at least substantially the length of the exterior surface parallel to an axis extending from the distal end to the proximal end or circumventing the exterior surface in a helical or serpentine form, wherein the outer balloon further comprises a plurality of pores positioned separate from the cutting element and providing fluid communication between the intermediate region and the exterior of the balloon catheter.