Device for treating an aneurysm of a blood vessel having a neck, comprising: two threads (3, 10) comprising shape memory alloy and are preconditioned thermomechanical manner until a preset coiled configuration; characterized in that said two wires (3, 10) are adapted to be deployed in a generally straight configuration and to revert to a coiled one another configuration when heated after deployment to press substantially until the end of said neck of said aneurysm by deploying said wires on opposite sides of said neck.
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