Patent ID: 7905901

Claim:
A self-centering occlusion device for occluding an aperture, the self-centering occlusion device comprising: a wire frame comprising first and second central supports defining a central axis, the central axis extending from the first central support to the second central support, and a plurality of opposing wire arm pairs emanating from the first and second central supports, wherein each opposing arm pair comprises two arm pairs, wherein each arm pair comprises: a first radially extending strut attached to the first central support; a first contact strut for contacting tissue on a first side of the aperture attached to and extending circumferentially from the first radially extending strut; a second radially extending strut attached to the second central support such that in a deployed state the second radially extending strut is configured as a generally mirror image of the first radially extending strut across a plane perpendicular to the central axis; a second contact strut for contacting tissue on a second side of the aperture attached to and extending circumferentially from the second radially extending strut such that in a deployed state the second contact strut is configured as a mirror image of the first contact strut across the plane perpendicular to the central axis; and a curvilinear centering arc extending between the first contact strut and the second contact strut, the centering arc being flexible and radially movable with respect to the central axis, wherein the centering arc comprises a flexible wire configured to loop around and hug an edge of the aperture and position the central axis of the device in an approximate center of the aperture; and sheets affixed to the wire frame.