Method and apparatus for treating tissues with hifu

Details Method and apparatus for treating tissues with hifu Method and apparatus for treating tissues with hifu

A - Human Necessities

61

N

A61N 7/00 (2006.01) A61B 18/00 (2006.01) A61N 7/02 (2006.01)

Patent

CA 2739425

A method for treating a desired volume of tissue using HIFU or other energy modality to ablate a pattern of elemental treatment volumes each having a volume that is greater than that of the focal zone of the HIFU transducer but smaller than the overall volume of the desired treatment volume. In one embodiment, the pattern of elemental treatment volumes are arranged to form a shell which partially or wholly encapsulates the desired volume of tissue, which then necroses in situ due to effects other than direct HIFU damage (including some combination of ischemia, thermal conduction, inflammation, apoptosis, etc.). The necrosed tissue remains in the body and is subsequently resorbed and/or healed via normal body mechanisms.

La présente invention concerne une méthode de traitement d'un volume désiré de tissu au moyen d'ultrasons focalisés de haute intensité (UFHI) ou d'une autre modalité d'énergie, afin de réaliser l'ablation d'un modèle de volumes de traitement élémentaire. Chacun présente un volume supérieur à celui de la zone focale du capteur d'UFHI, mais inférieur au volume d'ensemble du volume de traitement désiré. Dans un mode de réalisation, le modèle de volumes de traitement élémentaire est disposé pour former une coque qui encapsule partiellement ou entièrement le volume désiré de tissu, qui se nécrose alors in situ en raison des effets autres que les dommages directs provoqués par les UFHI (y compris certaines combinaisons d'ischémie, de conduction thermique, d'inflammation, d'apoptose, etc.). Le tissu nécrosé reste dans le corps, puis est résorbé et/ou guérit par le biais de mécanismes corporels normaux.

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