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Abstract

An electrosurgical system and method for performing an electrosurgical procedure are disclosed. The electrosurgical system includes a high frequency generator to supply energy, the generator including one or more electrical connections. The system also includes one or more instruments configured to be inserted into tissue of the patient's body having a hardened tissue volume. The instruments are configured to penetrate the hardened tissue volume to create at one or more orifices defined therein. The instruments are also configured to selectively encapsulate one or more active electrodes that are coupled to the electrical connections. Each of the electrodes has an elongated shaft terminating in an exposed, conductive tip. The electrodes are configured to be inserted into the tissue of the patient's body and into the hardened tissue volume through the orifices to subsequently apply energy from the high frequency generator to the exposed, conductive tip to induce a coherent heating effect in the hardened tissue volume from power deposition therein, thereby producing a heat ablation volume in the hardened tissue volume.

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First Claim