Patent ID: 8827953
Filing Date: 2014-09-09
Classification: A61B,A61F,A61M,A61N

Abstract:
1. An apparatus for intraluminal therapy comprising: an elongated catheter shaft having a proximal end and a distal region, and an inflation lumen and infusion lumen extending from the proximal end to the distal region; a fluid impermeable balloon affixed to the distal region, the fluid impermeable balloon having an exterior surface; an intermediate balloon affixed to the distal region to envelop the fluid impermeable balloon, the intermediate balloon having an interior surface and a first multiplicity of through-wall apertures; and an outer balloon affixed to the distal region to envelop the intermediate balloon, the outer balloon having an exterior surface and a second multiplicity of through-wall apertures offset from the first multiplicity of apertures, wherein the inflation lumen is coupled to a first space enclosed by the fluid impermeable balloon, the infusion lumen is coupled to a second space defined by the exterior surface of the fluid impermeable balloon and the interior surface of the intermediate balloon, and a third space between the intermediate balloon and the outer balloon is accessible only through the first multiplicity of through-wall apertures, and wherein the fluid impermeable balloon is configured to contact and expand the intermediate balloon against the outer balloon, and to expand the outer balloon into contact with a luminal wall to dilate the luminal wall.