Patent ID: 7395120

Claim:
An apparatus comprising: a first tube; a first lead conductor having a portion extending through the first tube; a proximal electrode disposed at a distal end of the first tube, the proximal electrode being in electrical communication with the first lead conductor; a second tube arranged slideably within the first tube, the second tube forming a central lumen sized to accommodate a guide wire; a second lead conductor extending through the second tube; a distal electrode disposed at a distal end of the second tube, the distal electrode being in electrical communication with the second lead conductor, wherein the proximal electrode has walls defining a cavity sized to receive at least a portion of the distal electrode and to prevent the distal electrode from moving into the first tube; a bipolar connector attached to the first and second lead conductors and configured to be removably attached to a pacing control system; and a third tube having proximal and distal ends, wherein the distal end of the third tube is attached to a portion of the first tube, the portion defining an opening in the first tube; the proximal end of the third tube is attached to a portion of the second tube, the portion defining an opening in the second tube; and the first lead conductor extends through portions of the first, second, and third tubes, and passes through the openings in the first and second tubes.