利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

45 条记录 (耗时 0.036 秒)

    Method of preparing biodegradable dual pore polymer scaffolds for tissue engineering
    43.
    发明申请
    Method of preparing biodegradable dual pore polymer scaffolds for tissue engineering 有权
    制备用于组织工程的可生物降解双孔聚合物支架的方法

    公开(公告)号：US20070092557A1

    公开(公告)日：2007-04-26

    申请号：US11526280

    申请日：2006-09-21

    申请人： Dong Han ,  Kwang-Duk Ahn ,  Hyun Jung ,  Kwideok Park

    发明人： Dong Han ,  Kwang-Duk Ahn ,  Hyun Jung ,  Kwideok Park

    IPC分类号： A61K9/70 ,  B29C65/00

    CPC分类号： A61L27/56 ,  A61L27/18 ,  A61L27/58 ,  C08L67/04

    摘要： There is provided a method of preparing biodegradable dual pore polymer scaffolds, comprising the steps of: maintaining a polymer solution containing a biodegradable polymer, an effervescent mixture of carbonate and organic acid, and solvent at a temperature range of −196° C. to ambient temperature so as to evaporate the solvent and produce a polymer sample; and foaming the polymer sample in a mixed solution of water and alcohol. According to the present invention, the pore size of the polymer scaffolds can be easily controlled, and biodegradable polymer scaffolds can be more simply prepared compared to conventional methods such as salt leaching technique, phase separation technique or gas foaming technique. Further, since the biodegradable polymer scaffolds prepared according to the present invention have a high surface area and porosity without formation of skin layer, secretion of toxic substances and remnant phenomenon, they can be advantageously used for regenerating almost all living tissues and organs in tissue engineering.

    摘要翻译： 提供了一种制备可生物降解的双孔聚合物支架的方法，包括以下步骤：将含有可生物降解的聚合物，碳酸盐和有机酸的泡腾混合物和溶剂的聚合物溶液保持在-196℃至环境温度 温度以蒸发溶剂并产生聚合物样品; 并将聚合物样品在水和酒精的混合溶液中发泡。 根据本发明，与常规方法如盐浸技术，相分离技术或气体发泡技术相比，可以容易地控制聚合物支架的孔径，并且可以更简单地制备可生物降解的聚合物支架。 此外，由于根据本发明制备的可生物降解的聚合物支架具有高的表面积和孔隙率，而没有形成皮肤层，有毒物质的分泌和残留现象，因此它们可有利地用于组织工程中几乎所有活组织和器官的再生 。

    Fixture for attaching indicator to grinding machine
    44.
    发明授权
    Fixture for attaching indicator to grinding machine 失效
    将指示器固定在研磨机上的夹具

    公开(公告)号：US06926586B2

    公开(公告)日：2005-08-09

    申请号：US10807212

    申请日：2004-03-22

    申请人： Dong Han

    发明人： Dong Han

    IPC分类号： B24B41/04 ,  B24B49/00

    CPC分类号： B24B49/00 ,  B24B41/04

    摘要： A fixture includes a fixing member attached to a grinding machine (10), a guiding shaft (37) attached to the fixing member and a clamp (38). The clamp defines a pair of holes (381, 382) in opposite ends thereof, for movably receiving the guiding shaft and an indicator (20) therein respectively. When the shaft and indicator are loosened from the holes of the clamp respectively, the clamp is rotated about the guiding shaft toward a workpiece (19) on the grinding machine, and the indicator is adjusted with respect to the workpiece, for measuring of the workpiece.

    摘要翻译： 固定装置包括附接到研磨机（10）的固定构件，附接到固定构件的引导轴（37）和夹具（38）。 夹具在其相对端限定一对孔（381,382），用于分别可移动地接收引导轴和指示器（20）。 当轴和指示器分别从夹具的孔松开时，夹具围绕导向轴朝向研磨机上的工件（19）旋转，并且指示器相对于工件被调节，用于测量工件 。

    Dental self-curing resin cement compositions
    45.
    发明申请
    Dental self-curing resin cement compositions 有权
    牙科自固化树脂水泥组合物

    公开(公告)号：US20050049326A1

    公开(公告)日：2005-03-03

    申请号：US10699117

    申请日：2003-10-31

    申请人： Kwang Park ,  Sang Park ,  Kyu Baek ,  Min Kim ,  Dong Han

    发明人： Kwang Park ,  Sang Park ,  Kyu Baek ,  Min Kim ,  Dong Han

    IPC分类号： A61K6/08 ,  A61K6/083 ,  C09J4/00

    CPC分类号： A61K6/083 ,  C08L33/00

    摘要： The present invention refers to dental self-curing resin compositions having enhanced mechanical and physical properties. In particular, the present invention relates to dental self-curing resin compositions consisting of (i) a Paste A composition containing the multifunctional prepolymer mixture of 2,2-bis-[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (“Bis-GMA”) and multifunctional prepolymer formed by substituting hydrogen atoms in hydroxyl group with methacrylate groups in the Bis-GMA molecules, and further containing a diluent, an adhesive monomer, a polymerization initiator, a polymerization inhibitor, a light stabilizer, an antioxidant, an inorganic pigment and an inorganic filler; and ii) a Paste B composition containing the same prepolymer mixture in the Paste A composition, and further containing a diluent, an adhesive monomer, a reductant, a polymerization inhibitor, a light stabilizer, an antioxidant, an inorganic pigment and an inorganic filler. The composition according to the present invention has better physical and mechanical properties than that of conventional compositions and is an ointment-ointment system able to be conveniently used.

    摘要翻译： 本发明涉及具有增强的机械和物理性质的牙科自固化树脂组合物。 特别地，本发明涉及牙科自固化树脂组合物，其由（i）含有2,2-双 - [4-（2-羟基-3-甲基丙烯酰氧基丙氧基）苯基]丙烷的多官能预聚物混合物的糊剂A组合物 （“Bis-GMA”）和通过在Bis-GMA分子中用甲基丙烯酸酯基取代羟基中的氢原子形成的多官能预聚物，还含有稀释剂，粘合剂单体，聚合引发剂，阻聚剂，光稳定剂， 抗氧化剂，无机颜料和无机填料; 和ii）在糊剂A组合物中含有相同的预聚物混合物的糊剂B组合物，并且还含有稀释剂，粘合剂单体，还原剂，阻聚剂，光稳定剂，抗氧化剂，无机颜料和无机填料。 根据本发明的组合物具有比常规组合物更好的物理和机械性能，并且是能够方便使用的软膏剂系统。