STABLE MICROBUBBLE SUSPENSIONS AS ENHANCEMENT AGENTS FOR ULTRASOUND ECHOGRAPHY
    1.
    发明授权
    STABLE MICROBUBBLE SUSPENSIONS AS ENHANCEMENT AGENTS FOR ULTRASOUND ECHOGRAPHY 失效
    STABLE细微的气泡悬浮体系作为VERSTÄRKUNGAGENZIEN超声回波描记术

    公开(公告)号:EP0619743B1

    公开(公告)日:1997-01-02

    申请号:EP93923522.2

    申请日:1993-10-21

    IPC分类号: A61K49/00

    CPC分类号: A61K49/225 A61K49/223

    摘要: Disclosed are injectable suspensions of gas filled microbubbles in an aqueous carrier liquid usable as contrast agents in ultrasonic echography. The suspensions comprise amphipathic compounds of which at least one may be a laminarized phospholipid as a stabiliser of the microbubbles against collapse with time and pressure. The concentration of phospholipids in the carrier liquid is below 0.01 % wt but is at least equal to or above that at which phospholipid molecules are present solely at the gas microbubble-liquid interface. Also disclosed is a method of preparation of the stable suspensions of air or gas filled microbubbles.

    STABLE MICROBUBBLE SUSPENSIONS AS ENHANCEMENT AGENTS FOR ULTRASOUND ECHOGRAPHY
    3.
    发明公开
    STABLE MICROBUBBLE SUSPENSIONS AS ENHANCEMENT AGENTS FOR ULTRASOUND ECHOGRAPHY 失效
    STABLE细微的气泡悬浮体系作为VERSTÄRKUNGAGENZIEN超声波超声波检查。

    公开(公告)号:EP0619743A1

    公开(公告)日:1994-10-19

    申请号:EP93923522.0

    申请日:1993-10-21

    IPC分类号: A61K47 A61B8 A61K9 A61K49 B01F3 B01J13

    CPC分类号: A61K49/225 A61K49/223

    摘要: On décrit des suspensions injectables de microbulles de gaz dans un vecteur liquide aqueux utilisables comme agents de contraste dans l'échographie à ultrasons. Les composites contiennent des agents amphiphatiques dont au moins un peut être un phospholipide à structure lamellaire, comme stabilisants des microbulles pour éviter leur coalescence sous l'effet du temps et de la pression. La concentration en phospholipides dasn le liquide vecteur est inférieure à 0,01 % en poids, mais elle est au moins égale ou supérieure à celle où les molécules de phospholipides sont uniquement présentes à l'interface microbulles-liquide. On décrit également unprocédé de préparation de suspensions stables de microbulles constituées d'air ou d'un gaz.

    ULTRASOUND CONTRAST AGENTS AND PROCESS FOR THE PREPARATION THEREOF
    4.
    发明公开
    ULTRASOUND CONTRAST AGENTS AND PROCESS FOR THE PREPARATION THEREOF 有权
    超声造影剂和方法来创建

    公开(公告)号:EP1590006A2

    公开(公告)日:2005-11-02

    申请号:EP04707586.6

    申请日:2004-02-03

    IPC分类号: A61K49/22 A61K49/18 A61K9/19

    CPC分类号: A61K49/223

    摘要: Method for preparing a lyophilized matrix and, upon reconstitution of the same, a respective injectable contrast agent comprising a liquid aqueous suspension of gas-filled microbubbles stabilized predominantly by a phospholipid. The method comprises preparing an emulsion from an aqueous medium, a phospholipid and a water immiscible organic solvent. The emulsion is then freeze-dried and subsequently reconstituted in an aqueous suspension of gas-filled microbubbles. The method allows to obtain suspensions comprising microbubbles having a relatively small diameter and a narrow size distribution.