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    • 6. 发明授权
    • Medical material
    • 医疗材料
    • US4695281A
    • 1987-09-22
    • US478773
    • 1983-03-25
    • Teruo MiyataYasuharu Noishiki
    • Teruo MiyataYasuharu Noishiki
    • A61F2/00A61L27/24A61L27/36A61L33/00C08H1/06A61F2/02A61F2/06
    • C08H1/06A61L27/24A61L27/36A61L33/0082A61F2310/00365Y10S623/917
    • The medical material according to this invention contains collagen, which as been chemically modified by saccinylation of thermal --NH.sub.2 groups of said chains attached to poly peptide chains of the collagen so that the --NH.sub.2 groups are converted into groups having --COOH groups. This succinylation can be carried out by reacting succinic anhydride with the --NH.sub.2 groups of the collagen. Since the above medical material has excellent compatibility with living bodies, especially, with blood, it is suitable to use it as a replacement material for tissues and/or organs which are kept in contact with blood at their surfaces, namely, is suitable for use in artificial blood vessels, artificial valves, some parts of artificial hearts which are kept in contact with blood at said parts, etc. and as a patching material for hearts.
    • 根据本发明的医疗材料包含胶原蛋白,其通过连接到胶原的多肽链的所述链的热-NH 2基团的凝血化而被化学修饰,使得-NH 2基团转化为具有-COOH基团的基团。 该琥珀酰化可以通过使琥珀酸酐与胶原的-NH 2基团反应来进行。 由于上述医用材料与生物体,特别是血液具有良好的相容性,因此适合用作与其表面保持与血液接触的组织和/或器官的替代材料,即适合使用 在人造血管,人造瓣膜,与所述部分血液保持接触的人造心脏的一些部分等,以及作为心脏的修补材料。
    • 8. 发明授权
    • Medical materials
    • 医疗材料
    • US4704131A
    • 1987-11-03
    • US661258
    • 1984-10-15
    • Yasuharu NoishikiTeruo Miyata
    • Yasuharu NoishikiTeruo Miyata
    • A61L33/10A61L33/00A61F2/04A01N1/02A61F2/06
    • A61L33/0029Y10S128/08Y10S623/916
    • The medical material contains heparinized collagen in which heparin has been bonded to protamine covalently fixed on collagen, and, owing to its excellent compatibility with living bodies, especially, its superb antithrombotic property, can be suitably used as a substituent material for tissues or organs which are brought into direct contact with blood, namely, as aritificial vessels, artificial valves and patching materials for cardiovascular organs, and the above medical material is also suitable as a membrane having anti-adhesion effects. The medical material is obtained by immersing and treating a natural or artificial material successively in an aqueous protamine solution, an aqueous glutaraldehyde solution and an aqueous heparin solution.
    • 医用材料含有肝素化胶原蛋白,其中肝素已被共价固定在胶原上的鱼精蛋白结合,并且由于其与活体的相容性优异,特别是其极好的抗血栓性质,可以适合用作组织或器官的取代基材料 与血液直接接触,即作为人造血管,人造瓣膜和心血管器官的修补材料,上述医用材料也适合作为具有抗粘连作用的膜。 通过将天然或人造材料依次浸入鱼精蛋白水溶液,戊二醛水溶液和肝素水溶液中而获得医疗材料。
    • 10. 发明授权
    • Prosthesis containing bioabsorbable materials insolubilized without
chemical reagents and method of making the same
    • 含有不含化学试剂的生物可吸收材料的假体及其制造方法
    • US5986168A
    • 1999-11-16
    • US928752
    • 1997-09-12
    • Yasuharu Noishiki
    • Yasuharu Noishiki
    • A61L27/00A61F2/06A61L27/20A61L27/22A61L27/34A61L27/36A61L27/38A61L27/56A61L27/58A61F2/02
    • A61L27/3691A61L27/20A61L27/22A61L27/34A61L27/38A61L27/56A61L27/58Y02P20/582
    • The present invention relates to a prosthesis comprising one or more bioabsorbable substances insolubilized and/or immobilized in place by a physical method which excludes chemical reagents. A growth factor can be bound to the bioabsorbable substance for simulating growth of, for example, fibroblast and endothelial cells, around and into the prosthesis. The invention can include a porous fabric substrate having the bioabsorbable substance(s) insolubilized and immobilized therewithin by one or more of the physical methods. The physical method can include entanglement, dry-up, thermal crosslinkng, gamma irradiation, ultraviolet irradiation, or swelling up by hyper hydration with electric charge. The invention excludes the use of conventional chemical reagents, such as glutaraldehyde or formaldehyde, which are toxic. Since the invention does not use the chemical reagents of the prior art, it can avoid the toxicity and foreign body reaction problems associated therewith. The prosthesis of the invention does not have blood leakage and provides an excellent antithrombogenicity by rapid completion of neointima formation with endothelial cell lining at an early stage after implantation.
    • 本发明涉及一种假体,其包含一种或多种通过不包括化学试剂的物理方法不溶化和/或固定在适当位置的生物可吸收物质。 生长因子可以结合生物可吸收物质,用于模拟假体周围的成纤维细胞和内皮细胞的生长。 本发明可以包括具有生物可吸收物质的多孔织物基质,所述生物可吸收物质通过一种或多种物理方法不溶解并固定在其中。 物理方法可以包括缠结,干燥,热交联,γ照射,紫外线照射或通过电荷高水合膨胀。 本发明不包括使用有毒的常规化学试剂如戊二醛或甲醛。 由于本发明不使用现有技术的化学试剂,因此可以避免与之相关的毒性和异物反应问题。 本发明的假体不具有血液渗漏,并且通过在植入后的早期快速完成与内皮细胞衬里的新内膜形成而提供优异的抗血栓形成。