Multi-lumen catheter containing integral strut and method of its manufacture

Abstract

A multi-lumen catheter shaft (55) includes a single piece strut (110) having a central portion defining a central lumen and a pair of opposing radial arms (116a), each defining a respective biased lumen (116). A first tubular layer (113) surrounds the strut, thus defining two opposing side lumens between the first tubular layer and the strut. The strut and first tubular layer may be separately or integrally formed. A second tubular layer (130) may be disposed around the first tubular layer, with an optional reinforcing layer (120) (e.g., a braided metallic mesh layer) disposed between the first and second tubular layers. Radial walls extending from the central portion of the strut may further subdivide the side lumens. Pull wires (10), activation wires, electrical conductors, and the like may be routed through the central, biased, and side lumens.

Dependencies are inferred from the claim text.