Transmural ablation device and method

Details Transmural ablation device and method Transmural ablation device and method

A - Human Necessities

61

B

A61B 18/04 (2006.01) A61B 18/14 (2006.01) A61B 17/00 (2006.01)

Patent

CA 2407645

A method and apparatus for transmural ablation using an instrument containing two electrodes (52, 53) or cryogenic probes. A clamping force is exerted on the two electrodes or probes such that the tissue of the hollow organ is clamped therebetween. Bipolar RF energy is then applied between the two electrodes, or the probes are cryogenically cooled, thus ablating the tissue therebetween. A monitoring device (102) measures a suitable parameter, such as impedance or temperature, and indicates when the tissue between the electrodes has been fully ablated.

Cette invention se rapporte à un procédé et un appareil d'ablation transmurale utilisant un instrument contenant deux électrodes ou deux sondes cryogènes. Une force de serrage est exercée sur les deux électrodes ou les deux sondes, pour que le tissu de l'organe creux devant faire l'objet de l'ablation soit pris en sandwich entre elles. Une énergie RF bipolaire est ensuite appliquée entre les deux électrodes, ou alors les deux sondes sont refroidies par voie cryogénique, pour produire l'ablation du tissu se trouvant entre elles. Un dispositif de surveillance mesure un paramètre approprié, tel que l'impédance ou la température, et indique à quel moment l'ablation de tout le tissu compris entre les électrodes est achevée.

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