The most popular pain management RF generator changes every few months, but it is usually one of 3. It is either the Neurotherm NT 2000 RFA machine, the Stryker Multigen radiofrequency generator or the Cosman G4 RF generator. The current RFA (radiofrequency ablation) machines are all 4 lead systems, (some RF generator manufacturers call them 4 lead, 4 channel or 4 RF output, you get the idea). The Halyard pain management RF generator and the Neurotherm NT1100, three RF output, pain management radiofrequency generators are also very popular.
Most pain management physicians who are just starting out often choose to save 50-75% and start with a single lead RF generator or a 3 lead RFA machine.