Devices and methods for treatment of vascular bifurcations

Details Devices and methods for treatment of vascular bifurcations Devices and methods for treatment of vascular bifurcations

A - Human Necessities

61

F

A61F 2/84 (2006.01) A61M 25/10 (2006.01) A61F 2/86 (2006.01)

Patent

CA 2597336

A method for treatment of a vascular bifurcation, where a second blood vessel (22) branches from a first blood vessel (24), the first and second blood vessels having characteristic first and second diameters such that the first diameter is greater than the second diameter. The method includes introducing a balloon (30) in the first blood vessel into proximity to the vascular bifurcation. The balloon includes an inner part (32) and a collar (34) proximal to the inner part. The collar is inflated so that the collar expands to an expanded diameter greater than the second diameter but less than an outer diameter of an ostial funnel (26) of the second blood vessel. The balloon is advanced into the second blood vessel so that the inflated collar lodges within the ostial funnel. While the inflated collar is lodged within the ostial funnel, the inner part of the balloon is inflated so as to treat the second blood vessel.

L'invention concerne une méthode destinée au traitement d'une bifurcation vasculaire comprenant un second vaisseau sanguin (22) formant une ramification à partir d'un premier vaisseau sanguin (24), le premier et le second vaisseau sanguin possédant un premier et un second diamètre caractéristique et le premier diamètre étant supérieur au second diamètre. Cette méthode consiste à introduire un ballonnet (30) dans le premier vaisseau sanguin, à proximité de la bifurcation vasculaire. Ce ballonnet comporte une partie interne (32) et un collier (34) adjacent à la partie interne. Ce collier est conçu pour être gonflé pour atteindre un diamètre à l'état déployé qui est supérieur au second diamètre mais inférieur au diamètre externe du tissu (26) en forme d'entonnoir du second vaisseaux, reliant les deux vaisseaux. La méthode consiste à faire avancer le ballonnet dans le second vaisseau sanguin afin que le collier gonflé vienne se loger dans ledit tissu en forme d'entonnoir. Alors que le collier gonflé est logé dans ledit tissu en forme d'entonnoir, la partie interne du ballonnet est gonflée pour traiter le second vaisseau sanguin.

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