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    • 136. 发明授权
    • Embolic material for endovascular occlusion of abnormal vasculature and
method of using the same
    • 栓塞材料血管闭塞异常脉管系统及其使用方法
    • US5894022A
    • 1999-04-13
    • US946608
    • 1997-10-07
    • Cheng JiGuido Guglielmi
    • Cheng JiGuido Guglielmi
    • A61K9/06A61K9/16A61K47/42A61L31/04A61L31/12A61F13/00A61K9/14
    • A61L31/047A61K47/42A61K9/06A61K9/1658A61L31/125A61L2400/06A61L2430/36Y10S514/938Y10S514/952
    • The present invention is an endovascular embolic composition. The embolic composition comprises a hydrophilic insoluble matrix having a microscopic mesh-like structure. The voids or intricacies of the matrix enclose droplets of aqueous solution as well as liquid oil. This structure is essentially equivalent to a "gel" structure with the insoluble matrix including both aqueous and oil droplets within its mesh. In creating the matrix a liquid oil base is mixed with an aqueous solution of a matrix base. The matrix base comprises an organic polymer such as a protein like albumin or its equivalent dissolved in an aqueous solution which may contain additional solutes. The matrix base solution is mixed and emulsified with the liquid oil base at a volume ratio ranging between about 1-to-1 and 1-to-5 respectively. To create the embolic composition the matrix base is then precipitated or cross-linked to form a gel with a mesh-like microscopic structure in which insoluble matrix surrounds and entraps both aqueous fluid and liquid oil. Preferably sclerifying agents are included within the composition so that scar tissue will develop to permanently occlude the embolized vasculature.
    • 本发明是一种血管内栓塞组合物。 栓塞组合物包含具有微观网状结构的亲水不溶性基质。 基质的空隙或复杂性包含水溶液和液体油的液滴。 该结构基本上等同于“凝胶”结构,其中不溶性基质包括其网内的水和油滴。 在制备基质时,将液体油基与基质基质的水溶液混合。 基质基质包括有机聚合物,例如蛋白质如白蛋白或其等同物溶解在可含有额外溶质的水溶液中。 将基质溶液与液体油基料分别以约1比1和1比5之间的体积比混合并乳化。 为了产生栓塞组合物,然后将基质沉淀或交联以形成具有网状微观结构的凝胶,其中不溶性基质围绕并捕获水性液体和液体油。 优选地,硬化剂包括在组合物内,使得瘢痕组织将发展以永久闭塞栓塞的脉管系统。