This invention relates to an aneurysm occluder, and more particularly but not exclusively, to an endovascular aneurysm occluder that can be inserted into an aneurysm cavity by using endovascular surgical procedures. The aneurysm occluder has a deformable housing (2) and an absorber (8) or material that causes blood clotting made of an absorbent material in an/or attached to the housing.
