ELECTROSURGICAL PROBE FOR TUMOR TREATMENT BY RADIOFREQUENCY

摘要

The present invention relates to an electrosurgical probe comprising a metal cannula (1), partially provided with an electroinsulating coating, wherein a multiplicity of filiform electrodes in a stretched position is housed, which are provided with elastic memory for assuming an arched shape by coming out from the cannula (1) this way confining the action of the filiform electrodes to limited, nearly spherical volume. Said electrodes (6) are fixed to the distal end of a control rod (7) also arranged in a slidable way inside the cannula (1), so that the electrodes in a stretched position are arranged side by side parallely with their control rod (7). The cannula (1) is provided with a series of holes (8) each being positioned immediately under the free ends of the filiform electrodes (6) and having a sufficient diameter for the passage of said electrodes. These are taken out of the cannula (1) not by pushing, but by pulling the control rod (7).