Embolic devices for occluding body lumens

An embolic device for placement in a body lumen, the embolic device comprising:

• an elongated member having a proximal end and a distal end;
• wherein the elongated member comprises a first segment configured to form a first three-dimensional structure, wherein the first three-dimensional structure defines a cavity;
• and
• wherein the elongated member comprises a second segment configured to form a second three-dimensional structure inside the cavity of the first three-dimensional structure.

A method of occluding a body lumen, comprising:

• delivering a first segment of an embolic device into the body lumen, wherein the delivered first segment forms a first three-dimensional structure inside the body lumen, the first three-dimensional structure defines a cavity;
• and
• delivering a second segment of the embolic device into the body lumen, the second segment extending from the first segment, wherein the delivered second segment forms a second three-dimensional structure;
• wherein at least a majority of the second three-dimensional structure is accommodated in the cavity of the first three-dimensional structure.