Fluid recirculation debris handling system

摘要

A device for circulating fluid to a target site within a living body, comprises a longitudinal member including an inlet lumen supplying fluid to the target site and a return lumen withdrawing fluid from the target site, the return lumen surrounding the inlet lumen and a screen coupled to a distal end of the longitudinal member, the screen including a plurality of openings extending therethrough from a radially inner surface forming a radially outer wall of a distal portion of the return lumen to an outer surface thereof.

主权项

1. A device for circulating fluid to a target site within a living body, comprising:
a longitudinal member including an inlet lumen supplying fluid to the target site and a return lumen withdrawing fluid from the target site, the return lumen surrounding the inlet lumen; and a screen coupled to a distal end of the longitudinal member, the screen including a plurality of openings extending therethrough from a radially inner surface forming a radially outer wall of a distal portion of the return lumen to an outer surface thereof; wherein the longitudinal member includes a first sleeve defining a working channel extending therethrough to a distal opening and a second sleeve extending therearound, the first sleeve including a first elongated structure and the second sleeve including a second elongated structure; and wherein, in an operative configuration, a distal end of the first sleeve extends distally beyond a distal end of the second sleeve, and is located proximal to a distal tip of the screen, so that an opening of the inlet lumen is adjacent to a distal opening in the screen.