Patent ID: 7470247
Filing Date: 2008-12-30
Classification: A61F,A61M

Abstract:
1. A stent comprising: an elongated tubular member having a body portion, a proximate end portion and a distal end portion, the tubular member having an axial lumen therein adapted to provide fluid communication from the distal end portion to the proximal end portion; and a retention disk comprising a first, pre-deployment configuration wherein a plurality of generally axial, spaced-apart collapsable struts interconnected with a membrane form a generalized tube with a retention disk lumen therein, the retention disk lumen in fluid communication with the lumen of the body portion, the struts and the membrane couple to the body portion proximal end at a retention disk distal end and terminate at a retention disk proximal end, each strut having a widthwise folding hinge substantially dividing the length of the strut, the struts adapted to have an expanded state wherein the struts are unfolded and substantially straight; and a second, fully deployed, free state configuration wherein each strut folds in upon itself in a free resting state at the folding hinge to form an inverted umbrella-like disk-shaped configuration, and wherein the retention disk is biased to a fully deployed umbrella-like shaped configuration.