Patent ID: 8882786

Claim:
An apparatus for closure of a physical anomaly that forms a gap in a vascular wall, the apparatus comprising: a closure body, said closure body made of a shape memory polymer (SMP) foam, said shape memory polymer (SMP) foam having at least one hard segment and one soft segment wherein said hard segment is formed at a temperature above T trans and said soft segment is formed at a temperature below T trans , said shape memory polymer (SMP) foam having the ability of being formed into a primary shape at temperature above T trans with a volume larger than the gap in the vascular wall, said shape memory polymer (SMP) foam having the ability of being compressed into a reduced secondary stable shape by being cooled to a temperature below the T trans with a volume smaller than the gap in the vascular wall, said shape memory polymer (SMP) foam having the ability of being controllably actuated by being heated to a temperature above the T trans so that it recovers its primary shape with a volume larger than the gap in the vascular wall, and a delivery device adapted to received said closure body made of a shape memory polymer (SMP) foam with said shape memory polymer (SMP) foam being compressed into said reduced secondary stable shape in said delivery device by being cooled to a temperature below the T trans with a volume smaller than the gap in the vascular wall, said delivery device adapted to deploy said closure body into the physical anomaly in the vascular wall, wherein said shape memory polymer (SMP) foam of said closure body in said reduced secondary stable shape is configured for positioning said closure body within the physical anomaly in the vascular wall, and wherein said shape memory polymer (SMP) foam is controllably actuated by being heated to a temperature above the T trans so that it recovers its primary shape with a volume larger than the gap in the vascular wall with said primary shape configured to close said anomaly.