The Avanos Medical Coolief Multi-Cooled Radiofrequency (Cooled-RF) Kit is an advanced, minimally invasive thermal lesioning system engineered for target nerve ablation in the management of chronic pain. Utilizing proprietary water-cooling technology, the Coolief system safely cools the tissue immediately adjacent to the electrode, enabling the creation of large-volume, spherical lesions that encompass variable nerve paths without tissue charring. Each kit provides a complete procedural setup containing a high-performance probe and specialized fluid delivery introducers designed for targeted radiofrequency interventions in spine and joint pain management.