Patent ID: 9149276
Filing Date: 2015-10-06
Classification: A61B

Abstract:
1. A tissue closure device for closing an opening in a tissue having an interior surface and an opposing exterior surface, the tissue closure device comprising: a deployment apparatus comprising: a tissue engaging device operatively coupled to the deployment apparatus and deliverable therefrom, the tissue engaging device comprising an annular-shaped body disposed about a central axis, the annular-shaped body having an aperture extending therethrough for receiving everted edges of the tissue and closing the opening in the tissue, the annular-shaped body being movable between a first position where the annular-shaped body is convex before engagement with the tissue, and a second position where the annular-shaped body is concave when the annular-shaped body is engaged with the tissue, wherein the tissue eversion apparatus includes a plurality of substantially flexible members, each of the plurality of substantially flexible members having a proximal end, a distal end, and a plurality of barbs for everting the tissue and drawing the tissue upward through the aperture of the tissue engaging device such that the everted edges of the tissue extend upward through the aperture when closing the opening in the tissue, the plurality of barbs including a first barb located proximally from the distal end of each of the plurality of substantially flexible members and a second barb located proximally from the first barb, each barb being oriented perpendicular to the plurality of substantially flexible members, and wherein a distal end of the lumen of the sheath of the deployment apparatus includes a retaining member disposed at the distal end of the lumen of the sheath, the retaining member being configured to retain the tissue engaging device in the lumen of the sheath until the tissue is drawn upward through the aperture, wherein a portion of the plurality of substantially flexible members containing the plurality of barbs is planar and perpendicular to the central longitudinal axis of the sheath in a deployed configuration.