Patent ID: 8007490
Filing Date: 2011-08-30
Classification: A61M

Abstract:
1. A dual-lumen catheter with a sheath having a wall for use in a body vessel, the catheter comprising: an elongate shaft having a longitudinal axis and having at least a first lumen and a second lumen formed therethrough, the first and second lumens in non-coaxial relationship, the elongate shaft having a cross sectional width normal to the longitudinal axis and defining an area between the shaft and the sheath wall for fluid to be injected into the body vessel; and a webbing section being disposed between the at least first and second lumens, and wherein at least part of the webbing section has a substantially flat surface formed along at least one of the first and second lumens, the webbing section having a webbing length that is 10%-20% less than the cross sectional width, reducing the stiffness of the elongate shaft along the webbing length, wherein the webbing length is perpendicular to or at an acute angle to the cross sectional width, wherein an outer perimeter of a cross section of the elongate shaft normal to the longitudinal axis includes at least two flat sides that are positioned opposite of each other with the webbing length extending from a first side of the at least two flat sides of the outer perimeter to a second side of the at least two flat sides of the outer perimeter, the first and second lumens disposed between the two flat sides.