Patent ID: 7762980
Filing Date: 2010-07-27
Classification: A61F,A61M

Abstract:
1. An AV-fistula graft, comprising: a tubular graft body having a tubular wall extending between two opposite end portions and a lumen within the tubular wall extending along a longitudinal axis between the two opposite end portions; and a valve system coupled to the lumen and that is adjustable between an open condition and a closed condition with respect to the lumen; wherein in the open condition the tubular graft body is substantially adapted to allow substantial fluid communication through the tubular graft body; wherein in the closed condition the fluid communication into the tubular graft body is substantially occluded; wherein the valve system comprises: first and second valves each having an expandable member coupled to the AV-fistula lumen and that is adjustable between a radially collapsed condition and a radially expanded condition; wherein the radially collapsed condition characterizes at least in part the open condition for the valve system and allows for fluid communication between anastomoses associated with the two opposite end portions; and wherein the radially expanded condition characterizes at least in part the closed condition for the valve system and substantially occludes fluid communication into the fistula lumen; said first and second valves positioned along two opposite ends, respectively, of the AV-fistula graft; wherein said first and second valves, in the closed condition, close the entire fistula from fluid communication with both of the anastomoses.