Ultrasound transmissive pad

Details Ultrasound transmissive pad Ultrasound transmissive pad

G - Physics

10

K

G10K 11/24 (2006.01) A61B 8/00 (2006.01) A61B 8/08 (2006.01) A61M 37/00 (2006.01) G01N 29/28 (2006.01) G10K 11/02 (2006.01)

Patent

CA 2246322

A pad (101) for transmitting acoustical waves between an ultrasound probe (107) and a target surface (105). The pad (101) includes a first layer (102) having a first porous portion which defines first layer pores therethrough. The first layer pores have a first layer pore dimension. The pad (101) further includes a second layer (103) having a first porous portion which defines second layer pores therethrough. The second layer pores have a second layer pore dimension. The second layer (103) is attached to the first layer (102) to define a space (104) therebetween. The first porous portion of the first layer (102) overlies the first porous portion of said second layer (103). An ultrasound couplant (100) is disposed in the space (104) defined between the first (102) and second (103) layers. The ultrasound couplant (100) has a molecule size that is less than or substantially equal to the first layer pore dimension and less than or substantially equal to the second layer pore dimension.

L'invention a trait à un tampon (101) permettant la transmission d'ondes acoustiques entre une sonde ultrasonore (107) et une surface cible (105). Ce tampon (101) comporte une première couche (102) pourvue d'une première partie poreuse délimitant une série de pores la traversant, ces pores étant d'une première dimension. Le tampon (101) comporte, en outre, une seconde couche (103) pourvue d'une première partie poreuse délimitant une série de pores la traversant, ces pores étant d'une seconde dimension. La seconde couche (103) se rattache à la première (102) de manière à constituer un espace (104) entre elles. La première partie poreuse de la première couche (102) repose sur la première partie poreuse de la seconde couche (103). Un milieu de couplage ultrasonore (100) est mis en place dans l'espace (104) situé entre la première couche (102) et la seconde (103). Les molécules du milieu de couplage (100) sont d'une taille inférieure ou sensiblement égale à celle des pores de la première et de la seconde couche.

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