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22 条记录 (耗时 0.016 秒)

    Artery imaging system
    1.
    发明授权
    Artery imaging system 有权
    动脉成像系统

    公开(公告)号：US08452371B2

    公开(公告)日：2013-05-28

    申请号：US11680977

    申请日：2007-03-01

    申请人： Charles L. Feldman ,  Peter Stone ,  Ahmet U. Coskun

    发明人： Charles L. Feldman ,  Peter Stone ,  Ahmet U. Coskun

    IPC分类号： A61B5/05

    CPC分类号： A61B8/12 ,  A61B5/02007 ,  A61B5/0402 ,  A61B5/7289 ,  A61B6/481 ,  A61B6/504 ,  A61B6/5247 ,  A61B8/5238 ,  G06T3/0037 ,  G06T7/33 ,  G06T7/38 ,  G06T2207/10016 ,  G06T2207/10132 ,  G06T2207/30101

    摘要： Techniques for imaging a blood vessel are described. A transducer attached to a catheter is guided to a first site within a blood vessel. The catheter is moved to a second site proximal to the first site at a speed selected to enable the transducer to generate a signal indicative of a geometry wall, the lumen, and a portion of the side branch. A first image of the blood vessel obtained from the signal is oriented with a second image of the blood vessel such that a first portion of the first image aligns with a second portion of the second image.

    摘要翻译： 描述了血管成像技术。 附接到导管的换能器被引导到血管内的第一部位。 将导管以选定的速度移动到靠近第一部位的第二部位，以使得换能器能够产生指示壁，内腔和侧分支的一部分的几何形状的信号。 从信号获得的血管的第一图像以血管的第二图像取向，使得第一图像的第一部分与第二图像的第二部分对准。

    Lower velocity wind tunnel
    2.
    发明授权
    Lower velocity wind tunnel 失效
    低速风电隧道

    公开(公告)号：US3628380A

    公开(公告)日：1971-12-21

    申请号：US3628380D

    申请日：1969-05-09

    申请人： CHARLES L FELDMAN

    发明人： FELDMAN CHARLES L

    IPC分类号： G01M9/02 ,  G01M9/00

    CPC分类号： G01M9/02

    摘要： A wind tunnel uses a working fluid in which the speed of sound is substantially lower than in air so that vehicles may be tested in a relatively low-velocity stream to determine performance when moving relatively much faster in air.

    Detecting capacitively coupled ECG baseline shift
    5.
    发明授权
    Detecting capacitively coupled ECG baseline shift 失效
    检测电容耦合ECG基线位移

    公开(公告)号：US4194511A

    公开(公告)日：1980-03-25

    申请号：US934883

    申请日：1978-08-18

    申请人： Charles L. Feldman

    发明人： Charles L. Feldman

    IPC分类号： A61B5/04

    CPC分类号： A61B5/04004 ,  Y10S128/902

    摘要： In an electrocardiographic system there is a multielement electrode at two skin locations for providing an ECG signal of negligible magnitude between elements because of the close spacing while the pair of elements are sufficiently separated so that the motion of one element is at least partially independent of the motion of the other. Parallel ECG signals are obtained from different elements of two multielement electrodes. The difference between the signals is detected by logical circuitry to produce a signal indicating baseline shift. The elements are coaxial with a 250 K resistor in series with each outer element.

    摘要翻译： 在心电图系统中，在两个皮肤位置处存在多元件电极，用于提供在元件之间具有可忽略的幅度的ECG信号，这是因为紧密的间隔，而该对元件被充分分离，使得一个元件的运动至少部分地独立于 另一个的动作。 从两个多元电极的不同元件获得并行的ECG信号。 信号之间的差异由逻辑电路检测以产生指示基线偏移的信号。 元件与每个外部元件串联的250 K电阻同轴。

    Apparatus and method for ECG baseline shift detecting
    6.
    发明授权
    Apparatus and method for ECG baseline shift detecting 失效
    心电图基线检测的装置和方法

    公开(公告)号：US4112930A

    公开(公告)日：1978-09-12

    申请号：US754538

    申请日：1976-12-27

    申请人： Charles L. Feldman ,  Mark Hubelbank

    发明人： Charles L. Feldman ,  Mark Hubelbank

    IPC分类号： A61B5/0428 ,  A61B5/04 ,  A61B5/0408

    CPC分类号： A61B5/0408 ,  A61B5/04004

    摘要： In an electrocardiographic system there is a multielement electrode at each skin location for providing an ECG signal of negligible magnitude between elements because of the close spacing while the pair of elements are sufficiently separated so that the motion of one element is at least partially independent of the motion of the other; thus, events causing a baseline shift will also cause a difference in potential between the two elements of a multielement electrode. That difference is detected by logical circuitry to produce a signal indicating baseline shift.