Method and apparatus for r-f ablation

Details Method and apparatus for r-f ablation Method and apparatus for r-f ablation

A - Human Necessities

61

B

A61B 18/14 (2006.01) A61B 17/00 (2006.01) A61B 17/22 (2006.01) A61M 3/02 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2168860

An ablation cathetere and a method of performing cardiac ablation. The catheter is provided with a hollow, helical electrode, which is screwed into cardiac tissue at a desired ablation site and connected to a source of R-F electrical energy to ablate the tissue adjacent the electrode. Prior to ablation, a conductive fluid may be injected through the hollow needle, both to provide for cooling of the tissue adjacent the needle and to increase the conductivity of the tissue in the area of the electrode.

Cathéter d'ablation et procédé permettant d'effectuer l'ablation de tissus cardiaques. Ledit cathéter est doté d'une électrode hélicoïdale creuse qui est vissée dans les tissus cardiaques à un site d'ablation désiré et reliée à une source d'énergie électrique de radiofréquence de manière à effectuer l'ablation des tissus adjacents à l'électrode. Avant l'ablation, un fluide conducteur peut être injecté à travers l'aguille creuse, à la fois pour permettre le refroidissement des tissus adjacents à l'aiguille et pour augmenter la conductivité des tissus dans la zone de l'électrode.

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