Method and apparatus for producing homogenous cavitation to...

A - Human Necessities – 61 – B

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A61B 17/00 (2006.01) A61M 37/00 (2006.01) A61B 17/22 (2006.01)

Patent

CA 2355187

The present invention is directed to apparatus, and methods for producing homogenous cavitation. An ultrasound souce comprising an ultrasound transmitting element (20) having an axis (5), and a cross section along the axis is disclosed. The ultrasound transmitting element also has a first axial end (1), and a second axial end (2) operable to produce ultrasonic waves. The cross section has an area having a maximum value at the first axial end, and a minimum value at the second axial end. A method for producing homogenous cavitation at an area of skin comprises creating a volume of fluid having a uniformly dispersed concentration of cavitation nuclei adjacent the area of skin. Ultrasound is then applied to the volume of fluid, and causes cavitation at the cavitation nuclei.

La présente invention concerne un dispositif et une méthode permettant de produire une cavitation homogène. Une source d'ultrasons comprend un élément (20) émetteur d'ultrasons présentant un axe (5) et une section transversale le long de cet axe. Cet élément comporte une première extrémité axiale (1) et une seconde extrémité axiale (2) émettant des ondes ultrasoniques. La surface de la section est maximum au niveau de la première extrémité axiale et minimum au niveau de la seconde extrémité axiale. L'invention concerne également une méthode permettant de produire une cavitation homogène dans une zone de la peau. Cette méthode consiste à créer un volume de liquide présentant une concentration à dispersion uniforme de noyaux de cavitation contre la surface de la peau, puis à appliquer des ultrasons au volume de fluide pour déclencher une cavitation des noyaux de cavitation.

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