Surgical system having a cassette with an acoustic air...

Details Surgical system having a cassette with an acoustic air... Surgical system having a cassette with an acoustic air...

A - Human Necessities

61

F

A61F 9/007 (2006.01) A61B 17/00 (2006.01) G01F 1/66 (2006.01)

Patent

CA 2596724

A surgical cassette have a rigid fluid channel formed into a rigid plastic component or housing. The piezoelectric crystals of an ultrasonic flow meter are positioned on one side of the fluid channel. The side wall of the fluid channel opposite the piezoelectric crystals is exposed to fluid in the flow channel on its interior side and is exposed to ambient air on its exterior side. The interface between the wall and the air acts as an acoustic reflector for the operation of the ultrasonic flow meter.

Cassette chirurgicale dotée d'un conduit rigide pour liquides formé dans une structure en plastique rigide. Les cristaux piézoélectriques d'un débitmètre à ultrasons sont positionnés à l'une des extrémités du conduit. € l'autre extrémité du conduit, la face interne de la paroi est exposée au liquide présent dans le conduit d'écoulement, et la face externe de la paroi est exposée à l'air ambiant. L'interface entre la paroi et l'air agit comme un réflecteur acoustique pour le fonctionnement du débitmètre à ultrasons.

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