#$%^&*AU2019219865A120190919.pdf#####Abstract A medical device for occluding an aneurysm comprising a compressed, hollow metal structure, wherein the hollow metal structure comprises a single lobe having a wall with an interior surface defining a void, and an exterior surface, with an opening in the wall that allows for the passage of fluid from the catheter into the void； wherein the passage of fluid into the void of the compressed hollow metal structure results in expansion of the hollow metal structure； and wherein the expanded hollow metal structure has sufficient rigidityto remain in an expanded state when detached from the catheter and implanted in vivo in an unsealed configuration.
