Intravascular aspiration system

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/22 (2006.01) A61M 25/00 (2006.01) A61M 29/02 (2006.01) A61B 18/24 (2006.01)

Patent

CA 2322876

Catheters and method for the treatment of stenosis or an occlusion (56) in a blood vessel (5) in which an occlusive device (52) is first delivered and the occlusive device (52) activated at a site distal to the occlusion (56) to at least partially occlude the vessel (5) and create a working space surrounding the occlusion (56). A therapy catheter is then introduced to treat the occlusion (56) and a debris removal device (60) is delivered to aspirate debris (58) from the vessel (5). The need for a separate irrigation catheter and irrigation fluid is eliminated, which allows the procedure to be performed quickly and efficiently. The catheters and method are especially useful in the removal of occlusion from saphenous vein grafts, the coronary and carotid arteries, arteries above the aortic arch and vessels of similar size and pressure.

L'invention concerne des cathéters et un procédé de traitement d'une sténose ou d'une occlusion (56) dans un vaisseau sanguin (5). Dans le procédé selon l'invention, on place d'abord un dispositif occlusif (52) à un site distal de l'occlusion, puis on active le dispositif occlusif, de manière à obstruer au moins en partie le vaisseau (5) et à créer un espace de travail autour de l'occlusion (56). On introduit alors un cathéter de traitement pour traiter l'occlusion(56), puis un dispositif de retrait de débris (60) pour aspirer les débris (58) provenant du vaisseau. On élimine la nécessité d'un cathéter d'irrigation et d'un fluide d'irrigation, ce qui permet de procéder à une intervention rapide et efficace. Les cathéters et le procédé selon l'invention sont notamment utiles pour enlever l'occlusion de greffes de veine saphène, d'artères coronaires et carotides, d'artères situées au-dessus de l'arc de l'aorte et de vaisseaux de taille et pression similaires.

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