| CPC A61B 17/225 (2013.01) [A61B 2017/22045 (2013.01); A61B 2017/22048 (2013.01); A61B 2017/22062 (2013.01); A61B 2017/22067 (2013.01)] | 10 Claims |
|
1. A catheter for treating occlusions in blood vessels comprising:
a tubular inner member having a proximal portion with a first diameter and a distal end portion having a second diameter smaller than the first diameter, with the proximal portion of the inner member including four circumferentially positioned flutes, each of the circumferentially positioned flutes receiving one of four tubes,
a first wire located in a first tube of the four tubes and extending distally beyond the first tube;
a second wire located in a second tube of the four tubes and extending distally beyond the second tube;
a third tube of the four tubes connectable to a source of conductive fluid;
a fourth tube of the four tubes configured to define a return path for the conductive fluid;
a cylindrical insulation sheath positioned around the distal portion of the inner member and radially inside the distal ends of the first and second wires;
a cylindrical conductive sheath surrounding the distal ends of the first and second wires and defining two electrode pairs;
a sheath surrounding the proximal portion of the inner member; and
a flexible cap surrounding the conductive sheath and a distal tip of the catheter.
|