Patent ID: 8801768
Filing Date: 2014-08-12
Classification: A61B,A61F

Abstract:
1. A system for treating an aneurysm in a blood vessel, said system comprising: at least a first double-walled filling structure comprising an outer wall, an inner wall, and a fillable space therebetween such that when filled, the outer wall conforms to the inside surface of the aneurysm and the inner wall forms a first generally tubular lumen to provide a path for blood flow, wherein the filling structure further comprises a membrane, the membrane permeable to water molecules so as to allow transport of water molecules across the membrane between the fillable space and an environment outside the filling structure when a water potential differential exists across the membrane; and a fluid filling medium for filling said fillable space, the fluid filling medium having one or more dissolvable solutes, wherein the membrane is impermeable to the one or more dissolvable solutes of the fluid filling medium such that the one or more dissolvable solutes induces an osmotic gradient across the membrane, and wherein the outer wall of the first double-walled filling structure remains flexible after deployment within the aneurysm such that the filling structure accommodates changes in a size and shape of the aneurysm when the aneurysm changes shape after deployment.