Patent ID: 7931671

Claim:
A medical sealing device for sealing a hole in a wall of a body organ, comprising: an inner member adapted to be positioned against an interior surface of the wall; a retaining member attached to the inner member; and an outer member adapted to be positioned outside the wall, the outer member having a hole through which the retaining member passes; wherein the retaining member includes a hollow portion within the retaining member; wherein the retaining member comprises a shape memory polymer, wherein the shape memory polymer is located in the hollow portion such that the shape memory polymer is enclosed within the retaining member; and wherein in a first state, the outer member is slidably attached to the retaining member and in a second state, a cross-sectional dimension of the retaining member changes in comparison to the first state such that the outer member is fixedly attached to the retaining member due to a change in shape of the shape memory polymer; wherein the shape memory polymer is enclosed within the retaining member such that the shape memory polymer is located in the hollow portion while the medical sealing device is in the first state and before delivery of the medical sealing device to the hole in the wall of the body organ; wherein the shape memory polymer is positioned within the hollow portion of the retaining member such that at least a portion of the shape memory polymer is located within the hole of the outer member when the medical sealing device is in the second state.