MDR CE 2-Channel Cooled Radiofrequency Generator for Chronic Knee Pain The 2-Channel Cooled Radiofrequency Generator is an MDR CE certified RF lesion system engineered for cooled radiofrequency ablation in interventional pain management. By circulating coolant through the electrode tip, the system keeps the electrode-tissue interface at a controlled low temperature and creates larger, more predictable lesions than conventional thermal RF, supporting procedures such as