A stent comprising: a stent body formed of a woven filament braid having a constrained configuration, the stent body having an expanded configuration with a proximal end of the body expanded into a proximal flange , a distal end of the body expanded into a distal flange , and a cylindrical region between the proximal and distal flanges, wherein at least the cylindrical region is covered, the covered cylindrical region having an open interior passage configured to permit the flow of fluid therethrough, the proximal and distal flanges configured to permit the flow of fluid therethrough; the proximal and distal flanges are configured to atraumatically engage bodily tissue between the proximal flange and distal flange with the proximal and distal flanges each having a pull-out force of greater than about 2.55N, wherein the pull-out force is measured with the stent in its fully expanded configuration, deployed through a hole in a material sized to accommodate the expanded diameter of the cylindrical region of the stent, and wherein the force measured is that required to deform the distal flange of the fully expanded stent and to pull the expanded distal flange of the stent through the hole; the stent configured to be retrievable through a catheter device from the expanded configuration; and characterized in that the proximal flange is configured to bend over the covered cylindrical region and the distal flange is configured to bend over the covered cylindrical region, with the proximal flange further comprising a curved surface, the distal flange further comprising a curved surface, and the curved surfaces being configured to atraumatically engage the bodily tissue. a stent body formed of a woven filament braid having a constrained configuration, the stent body having an expanded configuration with a proximal end of the body expanded into a proximal flange , a distal end of the body expanded into a distal flange , and a cylindrical region between the proximal and distal flanges, wherein at least the cylindrical region is covered, the covered cylindrical region having an open interior passage configured to permit the flow of fluid therethrough, the proximal and distal flanges configured to permit the flow of fluid therethrough; the proximal and distal flanges are configured to atraumatically engage bodily tissue between the proximal flange and distal flange with the proximal and distal flanges each having a pull-out force of greater than about 2.55N, wherein the pull-out force is measured with the stent in its fully expanded configuration, deployed through a hole in a material sized to accommodate the expanded diameter of the cylindrical region of the stent, and wherein the force measured is that required to deform the distal flange of the fully expanded stent and to pull the expanded distal flange of the stent through the hole; the stent configured to be retrievable through a catheter device from the expanded configuration; and characterized in that the proximal flange is configured to bend over the covered cylindrical region and the distal flange is configured to bend over the covered cylindrical region, with the proximal flange further comprising a curved surface, the distal flange further comprising a curved surface, and the curved surfaces being configured to atraumatically engage the bodily tissue. <EOS>