Intravascular ultrasound imaging systems with sealed...

A - Human Necessities – 61 – B

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A61B 8/12 (2006.01)

Patent

CA 2720123

A catheter assembly for an intravascular ul-trasound system includes a catheter and an imaging core. The catheter has a longitudinal length, a distal end, and a proximal end. The catheter includes a sealable lumen ex-tending along the longitudinal length of the catheter from the proximal end to the distal end, and a movable plunger or a movable seal in fluid communication with the lumen. The movable plunger or the movable seal provides a gas-tight seal. The movable plunger or the movable seal is con-figured and arranged for adjusting to changes in volume of the lumen when the lumen is filled with an acoustically-fa-vorable medium and sealed. The imaging core is config-ured and arranged for inserting into the sealable lumen and for coupling to a control module.

Linvention concerne un ensemble cathéter pour un système ultrasonore intravasculaire comprenant un cathéter et un noyau dimagerie. Le cathéter a une longueur longitudinale, une extrémité distale et une extrémité proximale. Le cathéter comprend une lumière scellable sétendant dans le long de la longueur longitudinale du cathéter à partir de lextrémité proximale vers lextrémité distale, et un piston mobile ou un joint mobile en communication fluidique avec la lumière. Le piston mobile ou le joint mobile forme un joint étanche au gaz. Le piston mobile ou le joint mobile est configuré et conçu pour sajuster à des changements de volume de la lumière lorsque la lumière est remplie dun milieu favorable sur le plan acoustique et scellé. Le noyau dimagerie est configuré et conçu pour sinsérer dans la lumière scellable et pour se coupler à un module de commande.

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