Apparatus for creating a continuous annular lesion

Details Apparatus for creating a continuous annular lesion Apparatus for creating a continuous annular lesion

A - Human Necessities

61

B

A61B 18/18 (2006.01) A61B 18/14 (2006.01) A61B 17/22 (2006.01)

Patent

CA 2382518

A medical device is disclosed which includes a deformable electrode device (12). In one illustrative embodiment, th deformable electrode is in the form of a braided member, at least a portion of which is electrically conductive. The braided member is extended over an elongated inner member (14), such as a guide wire, catheter shaft, or the like. A proximal sheath (22) is slidably extended over the inner member and is connected to the braided, electrically conductive member. The proximal sheath may be advanced distally to deform the braided member so that it defines a distally facing, ablative ring (40), and is operative to form an annular lesion.

L'invention concerne un dispositif médical qui comporte une électrode déformable (12). Dans un mode de réalisation, l'électrode déformable prend la forme d'un élément tressé, une partie duquel au moins est conducteur. L'élément tressé est placé au-dessu d'un élément intérieur allongé (14), tel qu'un câble-guide, une tige de cathéter, ou analogues. Une gaine proximale (22) est placée de manière coulissante au-dessus de l'élément intérieur et est relié à l'élément tressé conducteur. La gaine proximale peut être avancée de manière distale de façon à déformer l'élément tressé, afin que celui-ci définisse un anneau d'ablation à orientation distale pouvant former une lésion annulaire.

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