Patent ID: 8882755

Claim:
A medical probe assembly for delivering energy to a patient's body, the probe assembly comprising: an elongate member having a distal region and a proximal region, said distal region comprising an electrically non-conductive outer circumferential portion; an electrically conductive energy delivery device extending distally from said electrically non-conductive outer circumferential portion for delivering one of electrical and rf energy to the patient's body, said energy delivery device having a conductive outer circumferential surface and an internal lumen configured for internal longitudinal flow of a cooling fluid to a distal end of said energy delivery device; and an electrically conductive protrusion extending from said distal end of said energy delivery device and having a diameter than is less than a diameter of said energy delivery device, said electrically conductive protrusion being electrically coupled to said energy delivery device for delivering one of electrical and rf energy to the patient's body and comprising a temperature sensing element, said electrically conductive protrusion protruding distally beyond said lumen such that said cooling fluid does not flow into said electrically conductive protrusion and said temperature sensing element being located within said protrusion such that said cooling fluid does not contact said temperature sensing element, thereby allowing for a more accurate indication of the temperature of tissue proximate to said energy delivery device.