Abstract: A suction coagulator includes an improved venting system and suction tip to minimize the potential of electrical shock hazard for the surgeon using the apparatus. The nonconductive, plastic handle of the device is attached to the proximal end of an insulated, conductive metal cannula at the distal end of which is located the cauterizing, suction tip. A suction fitting at the rear end of the handle communicates through the hollow interior cavity of the handle and the interior channel in the cannula with the cauterizing tip. A suction control finger operated venting port located on the exterior of the handle is connected by a passageway to the interior cavity. It has been found that the tendency of the suction control passageway to fill up with blood significantly decreases if at least a portion of the suction control venting port is located downstream of the proximal end of the cannula.