Bipolar/monopolar endometrial ablation device and method

Details Bipolar/monopolar endometrial ablation device and method Bipolar/monopolar endometrial ablation device and method

A - Human Necessities

61

B

A61B 18/12 (2006.01) A61B 18/14 (2006.01) A61M 1/00 (2006.01) A61N 1/06 (2006.01) A61N 1/32 (2006.01) A61N 1/40 (2006.01) A61B 17/00 (2006.01) A61B 17/42 (2006.01)

Patent

CA 2173851

This invention is an endometrial ablation device and a method of manufacturing and using the device. An RF current is passed through an endometrium (22) to heat it. An electro-conductive expandable member such as a balloon (10) is used as the medium for passing the current and causing the heating of the endometrium (22). The power delivered from a power source to the balloon (10) is selectively provided to a plurality of electrode area segments (34) on the balloon (10) with each of the segments (34) having a thermistor (32) associated with it whereby temperature is monitored and controlled by a feedback arrangement from the thermistors (32). The method of manufacturing the ablation device includes using commercially available stretchable sheet material or providing a mandrel (324) or support base (352) and coating the mandrel or base with an uncured emulsion. The emulsion is then cured to form a bladder-like coating, which is thereafter removed from the mandrel or base to form a bladder (320).

Dispositif d'ablation de l'endomètre et procédé de fabrication et d'utilisation dudit dispositif. On fait passer un courant radiofréquence à travers un endomètre (22) pour le chauffer. Un élément dilatable électroconducteur tel qu'un ballonnet (10) est utilisé comme dispositif permettant de faire passer du courant et de provoquer la chauffe de l'endomètre (22). La puissance apportée par une source de puissance au ballonnet est fournie sélectivement à une pluralité de segments (34) de surface d'électrode sur le ballonnet (10), chacun des segments (34) ayant un thermistor (32) associé, ce qui permet de contrôler et de réguler la température grâce à un dispositif de rétroaction à partir des thermistors (32). Le procédé de fabrication dudit dispositif d'ablation consiste à utiliser un matériau en feuille étirable disponible dans le commerce ou à recouvrir un mandrin (324) ou support (352) d'une émulsion non polymérisée. Ladite émulsion est ensuite polymérisée pour former un revêtement en forme de vessie. Le revêtement est ensuite enlevé du mandrin ou du support pour former une vessie (320).

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