| 摘要 |
<p>A device for treating hemodynamically significant aneurysms (222, 26) especially in the intracranial and extracranial circulation regions using either X-ray fluoroscopy or real-time magnetic resonance (MR) imaging guidance comprises an MR-visible umbrella-shaped occlusion device (12, 14), e.g., containing multiple elongated filamentary loops made of a memory metal, elastomeric hydrogel or other expansile material, deploys into the aneurysm (22) by radial expansion. The device may be filled with a hardenable polymer for permanent and complete aneurysm occlusion. Wide-neck aneurysms (26) may be treated with the same device, with the addition of a temporary balloon (32) expanded in the parent vessel to allow expansion of the occlusion device (12, 14) within the aneurysm, instillation of the polymer into the device, and detachment of the device from the transporting catheter (4, 6). The catheter system (4, 6) may have attached microcoils (16, 18) or may be impregnated with MR-visible agents to permit vizualization in MR imaging systems.</p> |
