Systems For Ablating Tissue

An electrode assembly for ablation of tissue, the electrode assembly comprising:

• an insulative body;
• a proximal emitter coupled to the insulative body;
• an insulative spacer coupled to the proximal emitter;
• a distal emitter coupled to the insulative spacer;
• a first conduit extending through the insulative body and coupled to the proximal emitter, the first conduit comprising electrically conductive material configured to transmit energy from an energy source to the proximal emitter;
• and
• a second conduit extending through the insulative body and coupled to the distal emitter, the second conduit comprising electrically conductive material configured to transmit energy from the energy source to the distal emitter,
• wherein one of the proximal emitter and the distal emitter defines a fluid irrigation port configured to discharge fluid into the tissue and one of the first conduit and the second conduit defines an irrigation channel in fluid communication with the fluid irrigation port, and wherein a thermocouple is disposed within the other one of the first conduit and the second conduit.

An electrode assembly for ablation of tissue, the electrode assembly comprising:

• an insulative body;
• a proximal emitter coupled to the insulative body;
• an insulative spacer coupled to the proximal emitter;
• a distal emitter coupled to the insulative spacer;
• a first conduit extending longitudinally through the insulative body, the first conduit comprising an electrically conductive material configured to transmit energy from an energy source to the proximal emitter, and a bend configured to orient an end of the first conduit to be coupled to the proximal emitter;
• and
• a second conduit extending through the insulative body and the proximal emitter,
• wherein one of the proximal emitter and the distal emitter defines a fluid irrigation port configured to discharge fluid into the tissue and one of the first conduit and the second conduit defines an irrigation channel in fluid communication with the fluid irrigation port, and wherein a thermocouple is disposed in the other one of the first conduit and the second conduit.

An electrode assembly for ablation of tissue, the electrode assembly comprising:

• an insulative body;
• a proximal emitter coupled to the insulative body and being formed from a metal;
• an insulative spacer coupled to the proximal emitter;
• a distal emitter coupled to the insulative spacer and being formed from a metal;
• a first conduit formed from a metal and extending through the insulative body and at least a portion of the proximal emitter, wherein the first conduit is coupled to the proximal emitter and configured to transmit energy from an energy source to the proximal emitter;
• and
• a second conduit being formed from a metal and extending through the insulative body, the proximal emitter, and at least a portion of the distal emitter, wherein the second conduit is coupled to the distal emitter and configured to transmit energy from the energy source to the distal emitter,
• wherein outer diameter of the proximal emitter is at least 33% greater than outer diameters of each of the first and second conduits such that a proximal end of the proximal emitter is discernable on electromagnetic imaging despite the first and second conduits being at least substantially radiopaque.