An electrosurgical device comprising: a probe having an outer diameter, a proximal region, and a distal region, the probe comprising an electrically insulated portion located at the proximal region, a conductive portion for delivering energy to a target site located at the distal region, an introducer for facilitating insertion of the distal region of the probe into a body of a subject near the target site, the introducer having an inner diameter, a proximal end, and a distal end, wherein the exposed conductive portion of the probe extends past the distal end during energy delivery to the target site, wherein the outer diameter of the probe and the inner diameter of the introducer define a lumen; a side port (224; 406) for injecting a liquid, wherein the side port (224; 406) is in liquid communication with the lumen, an introducer hub connected to a proximal region of the probe; a probe hub included in the proximal region of the probe and disposed proximal to the introducer hub; a T-joint including the side port (224, 406), wherein the T-joint connects the proximal region of the probe to the proximal end of the introducer; wherein the T-joint forms a liquid tight seal with the proximal region of the probe via a T-joint hub connecting the T-joint to the proximal region of the probe; the liquid tight seal formed to prevent the backflow of the liquid, injected into the side port (224; 406), to the proximal region of the probe; the side port (224, 406) disposed between the probe hub and the T-joint hub for receiving the liquid; a void, defined by the introducer hub, in which liquid can be injected via the side port (224, 406) into the lumen; wherein the electrosurgical device is configured such that the liquid injected into the side port (224; 406) travels through the void and through the lumen and exits the distal end of the introducer for delivery to the target site, wherein the lumen defined by the outer diameter of the probe and the inner diameter of the introducer is in the form of an annular ring defining a space having a width of from 0.045 millimeters to 0.076 millimeters. a probe having an outer diameter, a proximal region, and a distal region, the probe comprising an electrically insulated portion located at the proximal region, a conductive portion for delivering energy to a target site located at the distal region, an introducer for facilitating insertion of the distal region of the probe into a body of a subject near the target site, the introducer having an inner diameter, a proximal end, and a distal end, wherein the exposed conductive portion of the probe extends past the distal end during energy delivery to the target site, wherein the outer diameter of the probe and the inner diameter of the introducer define a lumen; a side port (224; 406) for injecting a liquid, wherein the side port (224; 406) is in liquid communication with the lumen, an introducer for facilitating insertion of the distal region of the probe into a body of a subject near the target site, the introducer having an inner diameter, a proximal end, and a distal end, wherein the exposed conductive portion of the probe extends past the distal end during energy delivery to the target site, wherein the outer diameter of the probe and the inner diameter of the introducer define a lumen; an introducer hub connected to a proximal region of the probe; a probe hub included in the proximal region of the probe and disposed proximal to the introducer hub; a T-joint including the side port (224, 406), wherein the T-joint connects the proximal region of the probe to the proximal end of the introducer; wherein the T-joint forms a liquid tight seal with the proximal region of the probe via a T-joint hub connecting the T-joint to the proximal region of the probe; the liquid tight seal formed to prevent the backflow of the liquid, injected into the side port (224; 406), to the proximal region of the probe; the side port (224, 406) disposed between the probe hub and the T-joint hub for receiving the liquid; a void, defined by the introducer hub, in which liquid can be injected via the side port (224, 406) into the lumen; wherein the electrosurgical device is configured such that the liquid injected into the side port (224; 406) travels through the void and through the lumen and exits the distal end of the introducer for delivery to the target site,