A tissue closure device including a hub and first and second flanges extending therefrom. The hub extends along a central longitudinal axis between a proximal surface and an opposing distal surface. The first flange is frameless and extends from the hub adjacent the proximal surface thereof. The second flange extends from the hub adjacent the distal surface thereof. The first and second flanges are moveable between: a closed position, in which the first and second flanges extend radially away from the hub and are substantially orthogonal to the central longitudinal axis; and an open position, in which the first and second flanges extend longitudinally away from the hub in opposite directions from each other and are substantially parallel with the central longitudinal axis.