Patent ID: 8021328
Filing Date: 2011-09-20
Classification: A61M

Abstract:
1. An infusion balloon catheter, comprising: a) an elongated shaft having a proximal end, a distal end, an inflation lumen, an infusion lumen that is disposed therein and that extends distally to a distal port and a guidewire lumen for receiving a guidewire having a diameter, that extends distally from a guidewire proximal port formed in said shaft at a position that is spaced distally from the proximal end of said shaft, wherein said guidewire lumen extends along a length of an inner wall of said infusion lumen distal to said proximal port to merge with said infusion lumen in a substantially parallel configuration at a location proximal to said distal port, wherein said infusion lumen has a restricted passage adjacent to said guidewire lumen, such restricted passage having a transverse dimension that is smaller than said guidewire diameter, wherein said infusion lumen distal to said guidewire lumen is capable of accommodating a guidewire as well as a flow of infusion fluid and wherein said restricted passage prevents a guidewire that is being back-loaded through said distal port from extending through said infusion lumen beyond its merger with said guidewire lumen; and b) an inflatable balloon on a distal section of the elongated shaft, having an interior in fluid communication with the inflation lumen.