Method and system for transcervical tubal occlusion

A - Human Necessities – 61 – B

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A61B 18/14 (2006.01) A61B 17/42 (2006.01) A61F 6/20 (2006.01)

Patent

CA 2591545

A medical device and procedure is described for occluding a fallopian tube. A tubal occlusion device is inserted into a uterine cavity. The device includes an RF applicator head including an electrode carrier with one or more bipolar electrodes thereon. During insertion, the RF applicator head can be in a closed position. The RF applicator head is positioned at a tubal ostium of a fallopian tube, such that a distal tip of the RF applicator head advances into the tubal ostium. The RF applicator head is deployed into an open position such that the RF applicator head approximates the shape of the uterine cavity in a region of the tubal ostium. Current is passed through the one or more bipolar electrodes to the tubal ostium to destroy tissue to a known depth, which precipitates a healing response in surrounding tissue that over time scars and occludes the fallopian tube.

L'invention concerne un dispositif et une procédure médicale qui permettent d'occlure une trompe de Fallope. Un dispositif d'occlusion tubaire est inséré dans une cavité utérine. Ce dispositif comprend une tête d'application de radiofréquence comprenant un support d'électrode pourvu d'une ou de plusieurs électrodes bipolaires. Pendant l'insertion, la tête d'application de radiofréquence peut se trouver en position fermée. La tête d'application de radiofréquence est disposée au niveau d'un orifice tubaire de la trompe de Fallope, de façon qu'une pointe distale de la tête d'application de radiofréquence avance dans l'orifice tubaire. La tête d'application de radiofréquence est déployée en position ouverte de façon à épouser la forme de la cavité utérine dans une région de l'orifice tubaire. Un courant est appliqué à l'orifice tubaire à travers la ou les électrodes bipolaires afin de détruire le tissu à une profondeur connue, ce qui a pour effet de précipiter une réponse de guérison dans le tissu environnant qui, au fil du temps, cicatrise et occlut la trompe de Fallope.

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