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    Apparatus and methods of bioelectrical impedance analysis of blood flow
    53.
    发明授权
    Apparatus and methods of bioelectrical impedance analysis of blood flow 失效
    血流生物电阻抗分析装置及方法

    公开(公告)号：US6095987A

    公开(公告)日：2000-08-01

    申请号：US934036

    申请日：1997-09-19

    申请人： Ascher Shmulewitz ,  Arthur A. Wallace

    发明人： Ascher Shmulewitz ,  Arthur A. Wallace

    IPC分类号： A61B5/026 ,  A61B5/0408 ,  A61B5/0478 ,  A61B5/0492 ,  A61B5/05 ,  A61B5/053

    CPC分类号： A61B5/0538 ,  A61B5/0535

    摘要： Apparatus and methods are provided for monitoring cardiac output using bioelectrical impedance techniques in which first and second electrodes are placed in the trachea and/or bronchus in the vicinity of the ascending aorta, while an excitation current is injected into the thorax via first and second current electrodes, so that bioelectrical impedance measurements based on the voltage drop sensed by the first and second electrodes reflect voltage changes induced primarily by blood flow dynamics, rather than respiratory or non-cardiac related physiological effects. Additional sense electrodes may be provided, either internally, or externally, for which bioelectrical impedance values may be obtained. Methods are provided for computing cardiac output from bioelectrical impedance values. Apparatus and methods are also provided so that the measured cardiac output may be used to control administration of intravenous fluids to an organism or to optimize a heart rate controlled by a pacemaker.

    摘要翻译： 提供了用于使用生物电阻抗技术监测心输出量的装置和方法，其中第一和第二电极被放置在升主动脉附近的气管和/或支气管中，同时通过第一和第二电流将激发电流注入胸腔 电极，使得基于由第一和第二电极感测的电压降的生物电阻抗测量反映主要由血流动力学引起的电压变化，而不是呼吸或非心脏相关的生理效应。 可以在内部或外部提供附加的感测电极，为此获得生物电阻抗值。 提供了用于计算生物电阻抗值的心输出量的方法。 还提供了设备和方法，使得测量的心输出量可用于控制对生物体的静脉内流体的给药或优化由起搏器控制的心率。

    Hydraulically actuated dilatation mechanism for vessel dilatation and vascular prosthesis delivery and methods of use
    54.
    发明授权
    Hydraulically actuated dilatation mechanism for vessel dilatation and vascular prosthesis delivery and methods of use 失效
    用于血管扩张和血管假体递送的液压致动机构和使用方法

    公开(公告)号：US5989263A

    公开(公告)日：1999-11-23

    申请号：US38798

    申请日：1998-03-11

    申请人： Ascher Shmulewitz

    发明人： Ascher Shmulewitz

    IPC分类号： A61M29/00 ,  A61F11/00 ,  A61F2/06

    CPC分类号： A61M29/02

    摘要： Apparatus having a dilatation mechanism is provided wherein a plurality of radially expanding members are coupled to a plunger. The radially expanding members deflect outwardly in response to application of an hydraulic load to the plunger. The apparatus may be used in dilating vessels to treat obstructive vascular disease, or used in delivery systems to deploy vascular prostheses such as stents and grafts. Methods of using the apparatus are also provided.

    摘要翻译： 提供具有扩张机构的装置，其中多个径向扩张构件联接到柱塞。 响应于向柱塞施加液压负载，径向扩张构件向外偏转。 该装置可用于扩张血管以治疗阻塞性血管疾病，或用于输送系统中部署血管假体，例如支架和移植物。 还提供了使用该装置的方法。

    Methods and apparatus for performing ultrasound and enhanced X-ray imaging
    55.
    发明授权
    Methods and apparatus for performing ultrasound and enhanced X-ray imaging 失效
    用于进行超声和增强X射线成像的方法和装置

    公开(公告)号：US5983123A

    公开(公告)日：1999-11-09

    申请号：US99165

    申请日：1998-06-18

    申请人： Ascher Shmulewitz

    发明人： Ascher Shmulewitz

    IPC分类号： A61B5/05 ,  A61B6/00 ,  A61B8/00 ,  A61B8/08

    CPC分类号： A61B8/08 ,  A61B6/4417 ,  A61B6/50 ,  A61B6/5247 ,  A61B8/4209 ,  A61B8/4416 ,  A61B8/4455 ,  Y10S128/915

    摘要： Apparatus is provided that combines radiography equipment with an ultrasonic transducer to generate ultrasonic images of the internal structure of biological tissue that are in registration with an X-ray image. The apparatus includes an examination table having a radiolucent and sonolucent window for imaging the biological tissue with an ultrasound and X-ray subsystems without moving the patient. In alternative embodiments, the ultrasound transducer may be an annular array transducer mounted on a moveable or a linear array of ultrasonic transducing elements. The X-ray images are preferably generated digitally using a line X-ray source and detector.

    摘要翻译： 提供了将射线照相设备与超声换能器组合以产生与X射线图像对准的生物组织的内部结构的超声波图像的装置。 该装置包括具有用于使超声和X射线子系统对生物组织进行成像而不移动患者的可透射和透光窗口的检查台。 在替代实施例中，超声换能器可以是安装在超声波换能元件的可移动或线性阵列上的环形阵列换能器。 优选地，使用线X射线源和检测器数字地生成X射线图像。