Catheter system for the isolation of a segment of blood vessel

Abstract

A catheter for isolating a segment of blood vessel has a guiding catheter (,) with proximal and distal ends. The guiding catheter (,) has major and minor lumens (,). A first balloon (,) is attached to the guiding catheter (,) at the distal end thereof. The first balloon (,) is connected via the minor lumen (,) to a first inflation port (,) such that as fluid is injected into the first inflation port (,) the first balloon (,) expands. A proximal assembly (,) connected to the major lumen (,) at the proximal end of the guiding catheter (,) has an aspiration port (,) for evacuating the major lumen (,). A guidewire (,) extending through the major lumen includes a hollow tube (,) having proximal and distal ends. A wire (,) with a shapeable core is attached to the distal end of the hollow tube (,) forming a seal therewith. A plug (,) is selectively inserted into the proximal end of the hollow tube (,) forming a seal therewith. A second balloon (,) is attached to the distal end of the hollow tube (,) such that the second balloon (,) is expanded as fluid is received therein from a hole (,) in the hollow tube (,). A detachable manifold (,) holds the proximal end of the hollow tube (,) and the plug (,) in alignment with one another. The manifold (,) has a second inflation port (,) through which fluid is injected into the hollow tube (,) thereby expanding the second balloon (,).