会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Methods for a particle precipitation and coating using near-critical and
supercritical antisolvents
    • 使用近临界和超临界反溶剂进行颗粒沉淀和涂层的方法
    • US5833891A
    • 1998-11-10
    • US805215
    • 1997-02-27
    • Bala SubramaniamSaid SaimRoger A. RajewskiValentino Stella
    • Bala SubramaniamSaid SaimRoger A. RajewskiValentino Stella
    • A61K9/16A61K9/50B01J2/04B05D1/02B01D11/00
    • A61K9/1676A61K9/1688B01J2/04B05D1/025A61K9/1694A61K9/5089B05D2401/90
    • Improved methods and apparatus for particle precipitation and coating using near- or supercritical fluid conditions are described. A fluid dispersion having a continuous phase dispersant and at least one precipitatable substance therein is contacted with a supercritical fluid (SCF) antisolvent so as to generate focused high frequency antisolvent sonic waves, breaking up the dispersion into extremely small droplets; the enhanced mass transfer rates between the droplets and the antisolvent causes precipitation of very small particles on the order of 0.1-10 .mu.m. In coating processes, a turbulent fluidized flow of core particles is created using an SCF antisolvent in an enclosed zone. The core particles are contacted therein at near- or supercritical conditions by a fluid dispersion containing a dispersant together with a precipitatable substance. The antisolvent depletes the dispersant and the substance is precipitated onto the fluidized core particles. In another aspect of the invention, a process for preparing and administering a medicament using only a single container is provided. In such method, a fluid dispersion having a dispersant with the medicament therein is contacted with an antisolvent at near- or supercritical conditions within a use container, so as to directly precipitate small particles of the medicament in the container. The antisolvent is then removed and the use container is sealed with the medicament particles therein. Thereafter, dose(s) of the medicament can be withdrawn from the use container and administered to a patient.
    • 描述了使用近或超临界流体条件改进颗粒沉淀和涂层的方法和装置。 具有连续相分散剂和至少一种可沉淀物质的流体分散体与超临界流体(SCF)反溶剂接触,以产生聚焦的高频反溶剂声波,将分散体分解成极小的液滴; 液滴和抗溶剂之间的增强的传质速率导致非常小的颗粒的沉淀约0.1-10μm。 在涂覆过程中,使用封闭区域中的SCF反溶剂产生核心颗粒的湍流流化流。 核心颗粒在近或超临界条件下通过含有分散剂和可沉淀物质的流体分散体接触。 反溶剂消耗分散剂,物质沉淀在流化核心颗粒上。 在本发明的另一方面,提供了仅使用单一容器制备和施用药物的方法。 在这种方法中,将具有药物的分散剂的流体分散体与使用容器内的近临界或超临界条件下的反溶剂接触,从而将药物的小颗粒直接沉淀在容器中。 然后将抗溶剂除去,并将使用容器用其中的药物颗粒密封。 此后,药物的剂量可以从使用容器中取出并给予患者。