An electrosurgical suction coagulator includes a housing having proximal and distal ends and a malleable elongated tube-like shaft extending longitudinally from the distal end of the housing. The tube-like shaft includes a tube-like dielectric sheath and a tube-like electrode having a first thermal conductivity K1 disposed coaxially through the tube-like dielectric sheath. The tube-like electrode operably couples to a source of electrosurgical energy. A distal end of the tube-like electrode protrudes from a distal end of the tube-like shaft. One or more aspiration ports are defined in a distal end of the tube-like electrode. A proximal end of the tube-like electrode operably couples to a source of suction. A thermally conductive member having a second thermal conductivity K2 that is less than K1 is disposed concentrically about the tube-like shaft. The thermally conductive member is configured to impede the propagation of thermal energy in a proximal direction.