Device and method for treatment of tissue adjacent a bodily...

A - Human Necessities – 61 – B

Patent

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A61B 18/04 (2006.01) A61B 18/18 (2006.01)

Patent

CA 2460907

A method and apparatus of treating tissue adjacent to a bodily conduit using thermotherapy, while preventing obstructions of the bodily conduit due to edema employs the circulation of warmed fluid to maintain the temperature of the bodily conduit walls and compresses the tissue to be treated to increase the effectiveness of the irradiated heat. An energy-emitting source containing catheter is inserted in a bodily conduit and is positioned in a region of the tissue to be treated so that the energy-emitting source radiates energy to the tissue to be treated. Fluid warmed to over 30~C is circulated into and through the catheter to warm walls of the bodily conduit adjacent the catheter. The circulated fluid inflates a balloon to a pressure to compress the tissue to be treated. The combination of warmed fluid over 30~C being circulated adjacent the bodily conduit to maintain the warmth in its walls and the compression of the tissue to be treated enables a natural stent to be formed that remains after the catheter and compression balloon is removed.

L'invention concerne un procédé et un appareil permettant de traiter un tissu adjacent à un conduit corporel au moyen de la thermothérapie, tout en évitant les obstructions de ce conduit corporel provoquées par un oedème. Selon ce procédé, la circulation d'un fluide chauffé permet de maintenir la chaleur des parois du conduit corporel, et le tissu à traiter est comprimé pour accroître l'efficacité de la chaleur irradiée. Un cathéter pourvu d'une source émettrice d'énergie est inséré dans un conduit corporel et disposé dans une région du tissu à traiter, de façon que la source émettrice d'énergie diffuse de l'énergie au tissu à traiter. Un fluide porté à une température supérieure à 30 ·C circule dans et à travers le cathéter pour chauffer les parois du conduit corporel adjacent au cathéter. Le fluide en circulation gonfle un ballon selon une certaine pression pour comprimer le tissu à traiter. L'action conjuguée du liquide chauffé à plus de 30 ·C circulant à côté du conduit corporel pour maintenir la chaleur de ses parois, et de la compression du tissu à traiter permet de former un stent naturel qui demeure une fois le cathéter et le ballon de compression retirés.

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