Barrier device for covering the ostium of left atrial appendage

Details Barrier device for covering the ostium of left atrial appendage Barrier device for covering the ostium of left atrial appendage

A - Human Necessities

61

F

A61F 2/01 (2006.01) A61B 17/00 (2006.01) A61B 17/12 (2006.01) A61B 17/064 (2006.01) A61B 17/08 (2006.01) A61B 17/122 (2006.01)

Patent

CA 2386894

A membrane applied to the ostium of an atrial appendage is disclosed. The membrane prevents blood clots in the atrial appendage from escaping therefrom and entering the blood stream which can result in a blocked blood vessel, leading to strokes and heart attacks. The membrane may be permeable or impermeable with respect to blood flow. The membrane is configured to extend over the ostium of the left atrial appendage. The membrane has an outer periphery with a dimension larger than a corresponding dimension of the ostium. Securement means is provided to secure the outer periphery of the membrane in direct engagement with the atrial wall surrounding the ostium. The securement means may be located between the membrane and the atrial wall, or the securement means may extend distally from the membrane through the ostium.

L'invention concerne une membrane s'appliquant sur l'orifice d'un appendice auriculaire. La membrane empêche les caillots sanguins situés dans l'appendice auriculaire de s'en échapper et de pénétrer dans la circulation sanguine, ce qui peut entraîner le blocage d'un vaisseau sanguin et provoquer une attaque et une crise cardiaque. La membrane peut être perméable ou imperméable par rapport à la circulation sanguine. La membrane est conçue pour s'étendre sur l'orifice de l'appendice auriculaire gauche. La membrane présente un pourtour extérieur supérieur à une dimension correspondante de l'orifice. Un moyen de fixation sert à fixer le pourtour extérieur de la membrane en contact direct avec la paroi auriculaire entourant l'orifice. Le moyen de fixation peut être placé entre la membrane et la paroi auriculaire, ou peut s'étendre de manière distale depuis la membrane à travers l'orifice.

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