| 主权项 |
1. A prosthesis for controlling flow through a bodily lumen, the prosthesis comprising:
a body having a proximal portion, a distal portion and a lumen extending therethrough; a valve operably connected to the body, the valve having a proximal portion, a distal portion and a lumen extending through the valve, the valve lumen operably connected to the body lumen, the valve controlling flow through the prosthesis in a first direction and a second direction so that flow through the valve occurs in the first direction and the second direction; the valve having a substantially U-shaped radial cross-section at a distal end of the valve in a closed configuration, the distal end of the valve being a distal most portion of the valve in the closed configuration, the distal end of the valve comprising a first portion of a surface of the valve lumen and a second portion of the surface that contact each other and form a seal in the closed configuration; and wherein the distal end of the valve is openable so that the first portion of the surface of the valve lumen and the second portion of the surface of the valve lumen are spaced apart in response to an antegrade pressure and in response to a retrograde pressure that is greater than the antegrade pressure. |
