Methods and systems for focused bipolar tissue ablation

Details Methods and systems for focused bipolar tissue ablation Methods and systems for focused bipolar tissue ablation

A - Human Necessities

61

B

A61B 18/18 (2006.01) A61B 18/14 (2006.01)

Patent

CA 2421795

Large tissue regions are treated using pairs of electrode arrays (12, 14). The electrode arrays may be concave and disposed in tissue so that their concave portions are opposed to each other. Axial conductors (16) may be provided extending from the arrays and toward each other in order to increase the heating of tissues lying along the axis between the deployed electrode arrays. By properly spacing the electrode arrays apart and selecting the diameters of the arrays, desired volumes of tissue may be treated, typically with a bipolar, radiofrequency current.

On traite les zones étendues à l'aide d'une paire de réseaux d'électrodes (12, 14) pouvant être concaves et qu'on dispose dans les tissus de manière à être opposées l'un à l'autre. On peut prévoir des conducteurs axiaux (16) reliant les réseaux de manière à accroître l'échauffement des tissus situés le long de l'axe, entre les grappes déployées. En espaçant correctement les réseaux l'un de l'autre et en sélectionnant leur diamètre, on peut traiter les volumes de tissus désirés, normalement par des courants bipolaires à haute fréquence.

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