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    • 6. 发明申请
    • MICRODEVICES COMPRISING NANOCAPSULES FOR CONTROLLED DELIVERY OF DRUGS AND METHOD OF MANUFACTURING SAME
    • 包含用于控制药物输送的纳米颗粒的微型装置及其制造方法
    • WO2007014445A1
    • 2007-02-08
    • PCT/CA2005/001201
    • 2005-08-02
    • MIV THERAPEUTICS INC.LIEN, Mao-Jung MauriceSMITH, DougRAJTAR, ArcLIU, Dean-Mo
    • LIEN, Mao-Jung MauriceSMITH, DougRAJTAR, ArcLIU, Dean-Mo
    • A61K9/58A61K9/51
    • A61K9/5123A61K9/1647A61K9/5138A61K9/5146A61K9/5153A61K9/5192
    • This application relates to a microdevice for delivering drugs to a target location. The microdevice comprises a plurality of nanocapsules assembled together, each having an outer hydrophobic shell and an inner liquid core contained within the shell. At least one drug is dissolved within the inner liquid core. The liquid core comprises a mixture of solvents including at least one solvent for maintaining the hydrophilicity of the inner core (and hence the phase difference between the polymeric shell and the liquid core) and at least one second solvent for enhancing the solubility and bioavailability of the drug. For example, the second solvent may be selected to enable a hydrophobic drug to dissolve within the hydrophilic inner core environment. The inner core may also include a small amount of water-soluble polymer. The application also relates to a method of making the microdevices by formulating a homogenous emulsified solution containing the drug and forming the nanocapsules from the emulsified solution, such as by an atomization process.
    • 本申请涉及用于将药物递送至目标位置的微型装置。 微型装置包括组装在一起的多个纳米胶囊,每个具有外部疏水壳体和包含在壳体内的内部液体芯体。 至少一种药物溶解在内液芯内。 液芯包括溶剂混合物,包括至少一种溶剂,用于保持内芯的亲水性(因此聚合物壳与液芯之间的相位差)和至少一种第二溶剂用于增强溶解度和生物利用度 药物。 例如,可以选择第二溶剂以使疏水性药物溶解在亲水性内核环境中。 内核也可以包含少量的水溶性聚合物。 本申请还涉及通过配制含有药物的均匀乳化溶液并通过雾化方法从乳化溶液形成纳米胶囊来制备微型装置的方法。
    • 10. 发明申请
    • ELECTROLYTE SOLUTION AND METHOD FOR ELECTROLYTIC CO-DEPOSITION OF THIN FILM CALCIUM PHOSPHATE AND DRUG COMPOSITES
    • 电解质溶液和薄膜磷酸钙和药物复合材料的电沉积方法
    • WO2007124572A1
    • 2007-11-08
    • PCT/CA2007/000707
    • 2007-04-26
    • MIV THERAPEUTICS INC.LIU, Dean-MoLIEN, Mao-Jung, MauriceSMITH, DougTSUI, ManusRAJTAR, Arc
    • LIU, Dean-MoLIEN, Mao-Jung, MauriceSMITH, DougTSUI, ManusRAJTAR, Arc
    • A61L31/16A61K47/02A61L31/08C25D15/00C25D15/02
    • A61L27/32A61L27/54A61L2300/408A61L2300/41A61L2300/416A61L2300/62C25D13/02C25D15/00
    • Disclosed herein are electrolyte solutions and methods for electrolytic co-deposition of calcium phosphate and drug composites. The electrolyte solution may be formed by mixing solutions comprising calcium and phosphate precursors together to form an electrolyte solution. The electrolyte solution can have a water content less than 30 weight percent. The electrolyte solution may comprise a water-soluble non-aqueous solvent. A therapeutic agent, such as water-insoluble drug, is also present in the solution. The electrolyte solution thus formed may be used to co-deposit a calcium phosphate coating and the therapeutic agent on a substrate. One method includes the steps of immersing the substrate in the electrolyte solution and applying an electrical potential to the substrate to thereby cause (i) the calcium and phosphate precursors to electrochemically react with hydroxyl groups on the surface of the substrate and deposit the calcium phosphate coating thereon; and (ii) the therapeutic agent to electrophoretically migrate to the substrate and become co-deposited thereon together with the calcium phosphate coating. The method thus provides a convenient and easily controllable means for depositing thin film calcium phosphate and drug composites on substrates such as implantable medical devices.
    • 本文公开了电解质溶液和用于电解共沉积磷酸钙和药物复合材料的方法。 可以通过将包含钙和磷酸盐前体的溶液混合在一起形成电解质溶液来形成电解质溶液。 电解质溶液的含水量可以低于30重量%。 电解质溶液可以包含水溶性非水溶剂。 治疗剂,如水不溶性药物,也存在于该溶液中。 由此形成的电解质溶液可用于将磷酸钙涂层和治疗剂共沉积在基底上。 一种方法包括以下步骤:将基底浸入电解质溶液中并向基底施加电势,从而使(i)钙和磷酸盐前体与基底表面上的羟基电化学反应并沉积磷酸钙涂层 在其上; 和(ii)治疗剂电泳迁移至基质并与磷酸钙涂层共同沉积在其上。 因此,该方法提供了一种方便且易于控制的方法,用于在诸如可植入医疗装置的基底上沉积薄膜磷酸钙和药物复合物。