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    • 5. 发明授权
    • Hydrophilic porous membrane, method of manufacturing the same and liquid
filter using same
    • 亲水性多孔膜,其制造方法和使用其的液体过滤器
    • US5279856A
    • 1994-01-18
    • US996158
    • 1992-12-23
    • Noriyuki KoyamaShinsuke YokomachiYasushi NemotoMakoto Ohnishi
    • Noriyuki KoyamaShinsuke YokomachiYasushi NemotoMakoto Ohnishi
    • B01D67/00
    • B01D67/0088B01D67/0093
    • A hydrophilic porous membrane is obtained by covering porous membrane substrate with a non-ionic, amino-acid-based or non-ionic fluorine-based surface active agent. For the covering, the porous membrane substrate is immersed in a solution containing the surface active agent and then drying the membrane substrate. A different hydrophilic porous membrane is obtained by providing the surfaces of a porous membrane substrate and inner pore surfaces with a polar group and then covering the membrane substrate with a hydrophilic polymer film. For this covering, after introduction of the polar group to the surfaces of the porous membrane substrate and inner pore surfaces, the membrane substrate is immersed in a solution containing a hydrophilic substance and then dried. In a liquid filter using any of these hydrophilic porous membrane the porous membrane is disposed in a housing such as to divide the housing inner space into two sub-spaces respectively communicating with a liquid inlet and a filtrate outlet provided on the housing.
    • 通过用非离子,氨基酸或非离子的氟基表面活性剂覆盖多孔膜基底来获得亲水性多孔膜。 对于覆盖物,将多孔膜基材浸渍在含有表面活性剂的溶液中,然后干燥膜基材。 通过使多孔膜基材的表面和内孔表面具有极性基团,然后用亲水性聚合物膜覆盖膜基材,获得不同的亲水性多孔膜。 对于该覆盖物,在将极性基团引入到多孔膜基材和内孔表面的表面之后,将膜基材浸渍在含有亲水性物质的溶液中,然后干燥。 在使用任何这些亲水性多孔膜的液体过滤器中,多孔膜设置在壳体中,以将壳体内部空间分成两个分别与液体入口和设置在壳体上的滤液出口连通的子空间。
    • 7. 发明申请
    • Scaffold for tissue engineering, artificial blood vessel, cuff, and biological implant covering member
    • US20050107868A1
    • 2005-05-19
    • US10950620
    • 2004-09-28
    • Yasuhide NakayamaEisuke TatsumiYasushi Nemoto
    • Yasuhide NakayamaEisuke TatsumiYasushi Nemoto
    • A61L27/38A61L27/50A61L27/56A61F2/06A61F2/02
    • A61L27/38A61L27/507A61L27/56
    • The invention provides a porous scaffold for tissue engineering which allows easy cell engraftment and cell culture and thus enables stable organization and an artificial blood vessel which exhibits high patency rate even if the inner diameter is small. The scaffold for tissue engineering is made of thermoplastic resin which forms a porous three-dimensional network structure having communication property, wherein the porous three-dimensional network structure has an average pore diameter of from 100 to 650 μm and an apparent density of from 0.01 to 0.5 g/cm3. The artificial blood vessel is composed of this scaffold. The invention provides a cuff which allows easy infiltration of cells from living subcutaneous tissues, easy engraftment of cells, and neovascularization of capillary vessels so as to obtain robust bonding with subcutaneous tissues and, as a result, ensures separation of a wounded portion from the outside, thereby blocking exacerbation factors such as bacterial infection on healing and inhibiting progression of downgrowth. That is, the invention provides a cuff with none or little infection trouble such as tunnel infection. The cuff comprises a porous three-dimensional network structure which is made of thermoplastic resin or thermosetting resin and has communication property, wherein the porous three-dimensional network structure has an average pore diameter of from 100 to 1000 μm and apparent density of from 0.01 to 0.5 g/cm3. The invention provides a biological implant covering member which allows easy infiltration of cells from living subcutaneous tissues, easy engraftment of cells, and organization, thereby obtaining robust bonding with native tissues and therefore protecting a living body from adverse effect which may occur due to the insertion of a biological implantation member into the living body. The biological implant covering member comprises a porous three-dimensional network structure which is made of thermoplastic resin or thermosetting resin and has communication property, wherein the porous three-dimensional network structure has an average pore diameter of from 100 to 1000 μm and apparent density of from 0.01 to 0.5 g/cm3.