Buyers must prioritize the energy source type (Radiofrequency, Microwave, Cryoablation, or Laser) based on clinical needs. Key parameters include power output stability, frequency range, and cooling system efficiency (internal vs. external). Ensure the generator supports real-time impedance monitoring and temperature feedback to prevent thermal injury to non-target tissues. For electrode needles or probes, verify biocompatibility, echogenicity (for ultrasound visibility), and active tip length options.