Patent ID: 8827951
Filing Date: 2014-09-09
Classification: A61B

Abstract:
1. A balloon catheter comprising: an outer conduit; an inner conduit, suitable for passage over a guide wire, disposed within the lumen of said outer conduit such that the longitudinal axes of said inner and outer conduits are substantially parallel, and positioned such that the distal tip of said inner conduit extends beyond the distal tip of said outer conduit, said inner conduit is capable of being moved along its longitudinal axis in relation to said outer conduit; an inflatable balloon having a proximal margin attached to the outer surface of the distal tip of said outer conduit, and a distal margin attached to the outer surface of the portion of the inner conduit that extends beyond the distal tip of said outer conduit, said inflatable balloon includes a cylindrical middle portion, a distal side portion having at least one tapering part and a proximal side portion having at least one tapering part, wherein the length of said inflatable proximal side portion is equal to or larger than the length of said middle portion, said proximal portion comprises at least a second cylindrical portion having in the inflated state a diameter smaller than the diameter of said middle portion in the inflated state, said proximal portion also comprises at least two frusto-conical portions flanking the distal and the proximal sides of said second cylindrical portion, and wherein the distal end portion of said balloon is capable of intussuscepting upon proximal movement of said inner conduit in relation to said outer conduit; and a fluid port for introducing an inflation fluid into the space formed between the inner surface of said outer conduit and the outer surface of said inner conduit and into the lumen of said balloon, and for removing said fluid from said space and from said lumen.