Directional probe treatment apparatus for e.g. microsurgery, has probe with curved shape of radius of curvature, where curvature ensures passage of curved section through length of cannula without interference

摘要

The apparatus has a cannula with a cannula lumen, and having an average diameter. A probe (18) comprising an RF electrode, positioned in the lumen has a distal portion with a curved section (22) that has a radius of curvature. A seal is created between the cannula and the probe. The radius of curvature is selected to ensure passage of the curved section of the probe through the length of the cannula without interference. An independent claim is also included for a method of treatment comprising a treatment device with a cannula.