Microinjector for blasocysts
    7.
    发明授权
    Microinjector for blasocysts 失效
    胚泡微量注射器

    公开(公告)号:US5877008A

    公开(公告)日:1999-03-02

    申请号:US898232

    申请日:1997-07-22

    IPC分类号: C12M3/00 C12M3/04

    CPC分类号: C12M35/00

    摘要: An electromechanical device for driving the tip of a microinjection cannula, or needle, through the outer barrier of a blastocyst, cell, or cell nucleus for the injection of cells or other bioactive materials. Either a flexible frame or a ram moving within a base member is employed. Cannula motion is achieved by means of a piezoelectric stack and spring return system. The thrust motion over a predetermined microscopic distance is achieved without cannula setback prior to the thrust movement. Instead of specially prepared beveled and tipped needles, standard unimproved cannulas or needles can be used.

    摘要翻译: 一种机电装置,用于通过用于注射细胞或其他生物活性材料的囊胚,细胞或细胞核的外屏障驱动显微注射套管或针头的尖端。 使用在基部构件内移动的柔性框架或柱塞。 通过压电堆叠和弹簧复位系统实现插管运动。 超过预定的微距距离的推力运动是在推力运动之前实现的而没有套管挫折。 可以使用标准的未改进的插管或针,而不是专门准备的斜角和尖头针。

    Fluidization quality analyzer for fluidized beds
    8.
    发明授权
    Fluidization quality analyzer for fluidized beds 失效
    流化床流化质量分析仪

    公开(公告)号:US5435972A

    公开(公告)日:1995-07-25

    申请号:US171270

    申请日:1993-12-21

    IPC分类号: B01J8/24 G05D16/20 G05D7/00

    摘要: A control loop and fluidization quality analyzer for a fluidized bed utilizes time varying pressure drop measurements. A fast-response pressure transducer measures the overall bed pressure drop, or over some segment of the bed, and the pressure drop signal is processed to produce an output voltage which changes with the degree of fluidization turbulence.

    摘要翻译: 用于流化床的控制回路和流化质量分析器利用时变压降测量。 快速响应压力传感器测量整个床压降或床的某一部分,并且处理压降信号以产生随流化湍流程度而变化的输出电压。