To deliver thermal energy to tissue, Radio Frequency Ablation Device employ an electrosurgical generator linked to bipolar electrode arrays. In the radiofrequency range of 450 to 500 kHz, electricity travels through tissue between alternating positive and negative poles along the electrode arrays of the Radio Frequency Ablation Device. This current causes thermal energy to be generated within tissue that is in direct contact with the radiofrequency (RF) electrode, resulting in coagulation necrosis of the targeted tissue. The spacing and geometry of the electrodes on the RFA device, as well as the RFA generator's preset parameters (energy, power), allow for consistent depth of ablation. In the treatment of mucosal pathologic conditions, for example, the dosimetry is designed to produce an ablation depth to the muscularis mucosae (700-800 m deep).
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