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    • 22. 发明授权
    • Vascular prosthesis, manufacturing method of the same, and substrate for
vascular prosthesis
    • 血管假体,其制造方法和血管假体的底物
    • US5387236A
    • 1995-02-07
    • US988777
    • 1992-12-10
    • Yasuhara NoishikiTeruo Miyata
    • Yasuhara NoishikiTeruo Miyata
    • A61F2/06A61L27/50
    • A61L27/507A61F2/062Y10S623/901Y10S623/921
    • The invention relates to a vascular prosthesis wherein, fragments of biological tissues such as vascular tissues, connective tissues, fat tissues and muscular tissues and/or cells composing vascular walls such as vascular endothelial cells, smooth muscle cells and fibroblast cells are deposited and captured within the wall of a vascular prosthesis substrate; a manufacturing method comprising the steps of immersing a vascular prosthesis substrate into a dispersed solution of fragments of biological tissues such as vascular tissues, connective tissues, fat tissues and muscular tissues and/or cells composing vascular walls such as vascular endothelial cells, smooth muscle cells and fibroblast cells, and depositing and capturing the cells and/or tissue fragments on the inner wall and within the wall of the vascular prosthesis from one side to the other side of the vascular prosthesis substrate wall by providing a pressure differential between the outside and the inside of the vascular prosthesis substrate; and a substrate suitable for manufacturing a vascular prosthesis having a porous membrane having pores capable of trapping tissue fragments, or a laminate structure with such a membrane and another porous membrane having pores not large enough to pass the cells or tissue fragments.
    • 本发明涉及一种血管假体,其中沉积并俘获诸如血管组织,结缔组织,脂肪组织和构成血管壁的肌肉组织和/或细胞如血管内皮细胞,平滑肌细胞和成纤维细胞的生物组织的片段 血管假体基底的壁; 一种制造方法,包括以下步骤:将血管假体底物浸入诸如血管组织,结缔组织,脂肪组织和肌肉组织和/或组成血管壁的细胞如血管内皮细胞,平滑肌细胞的分散溶液中 和成纤维细胞,并且通过在血管假体基底壁的一侧到另一侧通过在外部和外侧之间的压力差来沉积和捕获血管假体的内壁和内壁内的细胞和/或组织碎片 血管假体底物内; 以及适于制造具有多孔膜的血管假体的基底,其具有能够捕获组织碎片的孔,或具有这种膜的层压结构和具有不足以穿过细胞或组织碎片的孔的另一多孔膜。
    • 25. 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。
    • 26. 发明授权
    • Substrate consisting of regenerated collagen fibrils and method of
manufacturing same
    • 由再生胶原纤维组成的基质及其制造方法
    • US4565580A
    • 1986-01-21
    • US586944
    • 1984-03-07
    • Teruo MiyataShinichi Namiki
    • Teruo MiyataShinichi Namiki
    • A61K9/16A61K35/36A61K38/17C12N5/00C12N5/02C12N5/06C12N11/08C12R1/91G01N33/86C08L89/00
    • A61K9/1658C12N5/0075G01N33/86C12N2533/54G01N2333/78
    • A substrate consisting essentially of regenerated collagen fibrils is provided which is in the form of a bead, or microsphere and comprises irregularly entangled regenerated collagen fibrils each having a diameter of 10-1000 m.mu. and an aqueous solution existing between the regenerated collagen fibrils, the content of the regenerated collagen fibrils being 20-0.01 wt. %. The substrate can be used for cell culture or for measuring adhesion activity of blood platelet.According to one method of manufacturing the collagen beads, an acidic aqueous collagen solution is dispersed in a water-immiscible organic solvent in the form of numerous droplets to form an emulsion, and the droplets are then coagulated by addition of a water-miscible organic solvent and an alkali to the emulsion.According to another method of manufacturing the collagen beads or microspheres, a neutral collagen solution is dispersed in a water-immiscible organic solvent in the form of numerous droplets to form an emulsion, and the droplets are then coagulated by raising the temperature of the emulsion to 30.degree. C.-40.degree. C. The collagen beads or microspheres prepared by the methods described above may be cross-linked by hexamethylenediisocyanate or glutaraldehyde.
    • 提供了基本上由再生的胶原纤维组成的底物,其为珠粒或微球的形式,并且包含直径为10-1000μm的不规则缠结的再生胶原原纤维和存在于再生的胶原纤维之间的水溶液, 再生胶原原纤维的含量为20〜0.01wt。 %。 底物可用于细胞培养或测量血小板的粘附活性。 根据制造胶原珠粒的一种方法,将酸性胶原水溶液以许多液滴的形式分散在与水不混溶的有机溶剂中以形成乳液,然后通过加入水混溶性有机溶剂使液滴凝结 并向该乳液提供碱。 根据制造胶原珠粒或微球体的另一种方法,将中性胶原溶液以许多液滴的形式分散在与水不混溶的有机溶剂中以形成乳液,然后通过将乳液的温度升高至 通过上述方法制备的胶原珠粒或微球体可以通过六亚甲基二异氰酸酯或戊二醛交联。