.  00. An occlusion device according to claim 00, wherein the occluder body has a length of at least about 00 cm.  00. An occlusion device according to claim 00, wherein the occluder body has a length of at least about 00 cm.  00. An occlusion device according to claim 00, wherein the occluder body has a length of at least about 00 cm.  00. An occlusion device according to claim 00, wherein the occluder body comprises a