HTA Sheath with Removable Scope

Abstract

An ablation device comprises an elongated introducer sized for insertion into a hollow organ via a natural opening, the introducer extending to a distal end which, when in an operative position, is within the hollow organ, the introducer including and a delivery lumen extending from a proximal end connectable to a source of ablation fluid to a distal delivery opening at the distal end in combination with a working channel extending to a working channel distal opening at the distal end, the working channel being sized and shaped so that, when a flexible instrument to be inserted into the hollow organ is received therein, a space between an outer surface of the flexible instrument and an inner wall of the working channel forms a return lumen extending from the working channel distal opening to a proximal return port and a fluid supply unit coupled to the introducer supplying ablation fluid to the delivery lumen.

Dependencies are inferred from the claim text.