Method and apparatus for endometrial ablation

A - Human Necessities – 61 – N

Patent

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Details

A61N 1/40 (2006.01) A61B 18/14 (2006.01) A61N 1/06 (2006.01) A61B 17/42 (2006.01) A61B 17/39 (1995.01)

Patent

CA 2159483

An endometrial ablation apparatus and method wherein an RF current having a frequency of between 250 kHz and 100 MHz is passed through the entire surface of an endometrium in order to provide heating of the endometrium. An electroconductive expandable member such as a balloon (14) is used as the medium for passing the current and causing the heating of the endometrium. The temperature of the endometrium is raised to a temperature between 45 degrees Celsius and 90 degrees Celsius and preferably not above 70 degrees Celsius for a time sufficient to destroy the cells of the lining while maintaining the average temperature of the myo-metrium at a temperature below approximately 42 degrees Celsius. The expandable balloon (14) is connected to a power source (197) which provides the radio frequency power having the desired characteristics to selectively heat the endometrial lining to the desired temperature.

L'invention se rapporte à un procédé et à un appareil d'ablation de l'endomètre dans lequel un courant radio-électrique ayant une fréquence comprise entre 250 kHz et 100 MHz traverse toute la surface d'un endomètre afin de fournir de la chaleur à celui-ci. Un élément expansible électroconducteur tel qu'un ballon (14) est utilisé comme milieu de transfert de courant afin de chauffer l'endomètre. La température de l'endomètre s'élève entre 45 degrés Celsius et 90 degrés Celsius et, de préférence, ne dépasse pas 70 degrés Celsius sur une durée suffisante pour détruire les cellules de la muqueuse tout en maintenant la température moyenne du myomètre à une température approximativement inférieure à 42 degrés Celsius. Le ballon dilatable (14) est connecté à une source de courant (197) qui fournit un courant radioélectrique ayant les caractéristiques désirées afin de chauffer sélectivement la muqueuse endométriale à la température désirée.

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