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    • 62. 发明授权
    • Apparatus and method for selectively optimizing an acoustic transducer
    • 用于选择性地优化声换能器的装置和方法
    • US06612987B2
    • 2003-09-02
    • US10011160
    • 2001-12-05
    • Ahmed MorsyAndrew Robinson
    • Ahmed MorsyAndrew Robinson
    • A61B800
    • G01S7/5205A61B8/00G01S7/5208G01S15/8979
    • The invention is directed towards an apparatus and method for selectively optimizing piezoelectric elements in an ultrasound transducer assembly for a given imaging mode. In one embodiment, a variable impedance network is interposed between an ultrasound processor and a transducer assembly and may be coupled to the transducer assembly to form either a series or a parallel connection with the transducer assembly. The network may be controlled by the processor to selectively alter the characteristics of the network. In another embodiment, the variable impedance network includes a pair of serially coupled inductors and a switch that permits one of the inductors to be controllably bypassed. In still another embodiment, the network includes a tapped inductor and a switch to permit the inductor tap to be controllably selected. In still another aspect, the inductor includes a tapped inductor having multiple taps, each tap selectable by a switch to optimize the network.
    • 本发明涉及用于选择性地优化用于给定成像模式的超声换能器组件中的压电元件的装置和方法。 在一个实施例中,可变阻抗网络介于超声处理器和换能器组件之间,并且可耦合到换能器组件以与换能器组件形成串联或并联连接。 网络可以由处理器控制以选择性地改变网络的特性。 在另一个实施例中,可变阻抗网络包括一对串联耦合的电感器和允许电感器之一被可控地绕过的开关。 在另一个实施例中,网络包括抽头电感器和允许可控制地选择电感器抽头的开关。 在另一方面,电感器包括具有多个抽头的抽头电感器,每个抽头可由开关选择以优化网络。
    • 65. 发明授权
    • Immunogenic cell envelope preparations
    • 免疫原细胞包膜制剂
    • US4248862A
    • 1981-02-03
    • US12857
    • 1979-02-16
    • Derek C. EllwoodRichard J. MancheeAndrew Robinson
    • Derek C. EllwoodRichard J. MancheeAndrew Robinson
    • A61K39/10
    • A61K39/099
    • An antigenically-active cell envelope fraction from bacterial cells, especially Bordetella pertussis, may be isolated by disrupting the cells, separating the cell envelopes from the other cell components, extracting the separated envelopes with a solution of a zwitterionic surfactant and precipitating the cell envelope preparation from the resulting extract by the addition of a lower alkyl (C.sub.1 to C.sub.5) alcohol, preferably ethanol. The preferred extractant is an N, N, N-trialkyl zwitterionic compound especially an N, N, N-trialkyl-.alpha.-amino acid or an N, N, N-trialkyl amine oxide.The cell envelope fraction obtained from B. pertussis is highly protective against whole bacteria when tested by standard vaccine mouse potency assay and has a greatly reduced lipopolysaccharide content compared with either whole cells or crude cell envelopes, greatly reducing the risk of undesirable side-effects from vaccination.
    • 来自细菌细胞,特别是百日咳博德特氏菌的抗原活性细胞包膜部分可以通过破坏细胞,将细胞包膜与其他细胞成分分离,用两性离子表面活性剂溶液萃取分离的包膜并沉淀细胞包膜制剂 通过加入低级烷基(C1至C5)醇,优选乙醇从所得提取物中提取。 优选的萃取剂是N,N,N-三烷基两性离子化合物,特别是N,N,N-三烷基-α-氨基酸或N,N,N-三烷基氧化胺。 从百日咳酵母获得的细胞包膜分数在通过标准疫苗小鼠效力测定法测试时对整个细菌具有高度保护性,与全细胞或粗细胞包膜相比,脂多糖含量大大降低,从而大大降低了不利副作用的风险 接种疫苗