Abstract: A coil electrode for use with an RFA (radio frequency ablation) apparatus, has a lead portion, and a helical portion coupled to the lead portion, the helical portion being formed of Nitinol SE510. Further, an RFA (radio frequency ablation) apparatus, comprises an applicator, the applicator including a handle and a cannulating delivery needle mounted to the handle, the cannulating delivery needle including a tip spaced apart from the handle. A coil electrode includes a lead portion housed in the cannulating delivery needle, and a helical portion coupled to the lead portion, the helical portion formed of Nitinol. The helical portion has a retracted state when housed within the cannulating delivery needle and a deployed state when moved out of the tip of the cannulating delivery needle.

Abstract: A coil electrode for use with an RFA (radio frequency ablation) apparatus, has a lead portion, and a helical portion coupled to the lead portion, the helical portion being formed of Nitinol SE510. Further, an RFA (radio frequency ablation) apparatus, comprises an applicator, the applicator including a handle and a cannulating delivery needle mounted to the handle, the cannulating delivery needle including a tip spaced apart from the handle. A coil electrode includes a lead portion housed in the cannulating delivery needle, and a helical portion coupled to the lead portion, the helical portion formed of Nitinol. The helical portion has a retracted state when housed within the cannulating delivery needle and a deployed state when moved out of the tip of the cannulating delivery needle.

Abstract: A single-coil RF electrode, along with an associated method of operation, has been developed for use in an RF applicator, RFA apparatus or RFA system for heating tumors, including large tumors with a single heating session. The RF electrode generally has a helical geometry, although many variations exist, and is provided with an excitation current having a frequency that is sufficient for magnetic induction and coupling of various electric and magnetic fields to produce an electric field within the volume surrounded by the coil for directly applying heat to the tissue therein.

Abstract: A method of detecting cellular damage within a subject comprises transmitting low frequency ultrasound (20 MHz or below) into a selected site within the subject wherein the selected site has been exposed to a stress capable of causing cellular death at the selected site. At least a portion of ultrasound backscattered from the ultrasound transmitted into the selected site is received. The received backscattered ultrasound is compared to a control backscatter measurement. An increase or a decrease in intensity or spectral slope of the received backscattered ultrasound when compared to the control backscatter measurement indicates cellular death or damage at the selected site within the subject.