Infusion catheter and methods

摘要

An infusion catheter includes an elongate catheter body having a longitudinally extending fluid supply passage, and a plurality of stellate side ports for infusing a treatment fluid from the fluid supply passage into a body lumen of a passage. Each of the stellate side ports is defined by sets of at least three convergent leaves having an attached basal edge, a terminal tip, and first and second free edges extending between the attached basal edge and the terminal tip. Making an infusion catheter includes forming a plurality of stellate side ports in fluid communication with a fluid supply passage of an elongate catheter body, each of the stellate side ports being defined by a set of at least three convergent leaves, and setting an infusion length of the infusion catheter during the forming step via spacing the stellate side ports between proximal and distal ends of the elongate catheter body.

主权项

1. An infusion catheter comprising:
an elongate catheter body including an outer body surface, and an inner body surface defining a fluid supply passage extending longitudinally between a proximal body segment having an inlet to the fluid supply passage, and a distal body segment; a plurality of stellate side ports in fluid communication with the fluid supply passage and having a distribution within the distal body segment which defines a catheter infusion length; each of the stellate side ports being defined by sets of at least three convergent leaves formed integrally with the elongate catheter body, and each of the convergent leaves having an attached basal edge, a terminal tip, and first and second free edges extending between the attached basal edge and the terminal tip; the distal body segment terminating in a wire guide opening; and wherein the infusion catheter has an infusion configuration in which the stellate side ports are open to fluid flow therethrough and the wire guide opening is obstructed to fluid flow therethrough.