Systems and methods for sensing sub-surface temperatures in...

A - Human Necessities – 61 – B

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A61B 18/14 (2006.01) A61N 1/06 (2006.01) A61N 1/40 (2006.01) A61B 17/00 (2006.01) A61B 18/00 (2006.01) A61B 18/12 (2006.01)

Patent

CA 2217024

Systems and associated methods for ablating body tissue employ an electrode for contacting tissue to form a tissue-electrode interface. The electrode is adapted to be connected to a source of ablation energy to conduct ablation energy for transmission by the electrode into tissue at the tissue-electrode interface. The systems and methods also include an element to cool the electrode. The systems and methods hold a tissue temperature sensing element in a carrier in thermal conductive contact with tissue beneath the tissue- electrode interface. The systems and methods include a controller that is coupled to the tissue temperature sensing element to control either the supply of ablation energy, or the rate at which the electrode is cooled, or both based, at least in part, upon temperature sensed by the temperature sensing element.

La présente invention concerne des systèmes et les techniques associées d'ablation de tissus de l'organisme, mettant une électrode en contact avec les tissus pour former une interface tissu-électrode. L'électrode est conçue pour être reliée à une source d'énergie ablative, ladite énergie étant conduite par l'électrode aux fins de transmission dans le tissu à l'interface tissu-électrode. Les systèmes et les techniques intègrent aussi un élément de refroidissement de l'électrode. Un capteur de température tissulaire est placé sur un vecteur qui est en contact thermoconductible avec le tissu situé en dessous de l'interface tissu-électrode. Les systèmes et les techniques comportent un régulateur couplé au capteur de température tissulaire, sa fonction étant de réguler l'alimentation en énergie ablative ou le rythme de refroidissement de l'électrode, ou les deux, en fonction notamment de la température détectée par le capteur.

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