Retrograde Blood Flow Occlusion Flushing Device

Abstract

A device and method for establishing retrograde blood flow during recanalization of a vessel having a targeted blockage. While in a collapsed state an occluding component is introduced distally intravascularly traversing the targeted blockage to its distal side. Then, the occluding component transitions to an expanded state having an enlarged diameter forming a seal with an internal wall of the vessel prohibiting anterograde blood flow beyond the expanded occluding component. Retrograde blood flow is thereby established in a region of the vessel bound at one end by the occluding component and at an opposite end by the targeted blockage by dispensing a flushing fluid into the region of the vessel.

What is claimed is: 
     
         1 . A retrograde blood flow occlusion flushing device, comprising:
 a catheter body having a circular shape radial cross-sectional profile, a proximal end and an opposite distal end; a plurality of lumen defined longitudinally in the catheter body; wherein each of the plurality of lumen are arranged radially separate of one another within the circular shape radial cross-sectional profile of the catheter body;   an occluding component disposed proximate the distal end of the catheter body and extending radially outward from the catheter body; the occluding component activatable to transition from a collapsed state to an expanded state; the occluding component having an enlarged diameter in the expanded state relative to that while in the collapsed state as measured from a longitudinal axis of the catheter body;   a flushing fluid deliverable through at least one of the plurality of lumen of the catheter body and exiting from a port defined in the catheter body; the port being disposed proximally of the occluding component.   
     
     
         2 . The device in accordance with  claim 1 , wherein the port is defined in a side of the catheter body; the occluding component is an inflatable balloon. 
     
     
         3 . The device in accordance with  claim 2 , wherein one of the plurality of lumen is a flushing lumen for delivery of the flushing fluid; another of the plurality of lumen delivering an inflating fluid to inflate the inflatable balloon transitioning from the collapsed state to the expanded state. 
     
     
         4 . The device in accordance with  claim 3 , wherein the flushing fluid is saline, contrast fluid or other biocompatible liquid; and the inflating fluid is air. 
     
     
         5 . The device in accordance with  claim 2 , wherein one of the plurality of lumen is a wire lumen for receiving therethrough a wire over which the catheter body is tracked; the wire lumen extending longitudinally through the catheter body and distally beyond the occluding component. 
     
     
         6 . The device in accordance with  claim 1 , wherein the port is defined in a distal end of the catheter body; and the occluding component is a flap extending radially outward from the catheter body in the extended state and substantially flush in profile with an outer surface of the catheter body when in the collapsed state. 
     
     
         7 . The device in accordance with  claim 6 , wherein the flap is automatically deployed by the flushing fluid exiting from the port. 
     
     
         8 . The device in accordance with  claim 1 , further comprising a clot capture mechanical component transitionable between a collapsed state and an expanded state, wherein in the expanded state the clot capture mechanical component extends radially outward from a distal section of the catheter body proximally of the occluding component. 
     
     
         9 . The device in accordance with  claim 8 , wherein the clot capture mechanical component is at least one protrusion or arm.