What is Cooled Radiofrequancy Ablation of Nerves? As its name states, cooled radiofrequency ablation is a version of conventional radiofrequency ablation, which uses a small insulated needle to deliver a heated, high-frequency electrical current that damage the nerve tissue, so the pain signals can't be delivered. Cooled Radiofrequancy Ablation of Nerves decreases pain of long duration without any side effects.