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公开(公告)号：US20050020935A1
公开(公告)日：2005-01-27
申请号：US10848501
申请日：2004-05-19
IPC分类号： A61B5/05 , A61B5/0408 , A61B5/0478 , A61B5/053 , A61B5/04
CPC分类号： A61B5/0536 , A61B5/0408
摘要： The invention relates to an electrode for biomedical measurements, in particular for measurements for electrical impedance tomography, which permits measurements with as little interference as possible. The electrodes comprise a contact plate, a line driver with a high-impedance signal input and low-impedance line output and a current source, with a current output and a reference point, whereby the contact plate is connected to the high-impedance signal input of the line driver and to the current output of the current source and the line driver and the current source are arranged in the vicinity of the contact plate.
摘要翻译： 本发明涉及用于生物医学测量的电极，特别是用于电阻抗层析成像的测量，其允许以尽可能少的干扰进行测量。 电极包括接触板，具有高阻抗信号输入和低阻抗线路输出的线路驱动器和具有电流输出和参考点的电流源，由此接触板连接到高阻抗信号输入 的线路驱动器和电流源的电流输出，线路驱动器和电流源布置在接触板附近。
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公开(公告)号：US4873486A
公开(公告)日：1989-10-10
申请号：US241635
申请日：1988-09-08
CPC分类号： G01R33/3621 , G01R33/3607
摘要： A magnetic resonance spectrometer in which, at least in the receiving branch, the received spin resonance signal is transposed by successive mixing processes into a transposed signal having a higher frequency range than the baseband. The transposed signal is converted into a digital signal by an analog-to-digital converter.
摘要翻译： 一种磁共振光谱仪，其中至少在接收分支中，接收的自旋共振信号通过连续的混合处理转置成具有比基带更高的频率范围的转置信号。 转置信号由模数转换器转换为数字信号。
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公开(公告)号：US4694836A
公开(公告)日：1987-09-22
申请号：US809635
申请日：1985-12-16
申请人： Dirk Buikman , Thomas Helzel , Peter Roschman
发明人： Dirk Buikman , Thomas Helzel , Peter Roschman
IPC分类号： A61B5/11 , G01R33/28 , G01R33/567 , A61B5/05
CPC分类号： G01R33/5673 , A61B5/1126 , G01R33/28
摘要： A method of generating a motion signal which is dependent on motion of a body to be examined in an MRI tomography apparatus, characterized in that during the examination the impedance of a high-frequency coil system (33; 34) whose field acts on the body (3) to be examined and which is tuned to a predetermined resonance frequency is measured in the resonance frequency range with the motion signal being derived from the measurement signal just formed.
摘要翻译： 一种产生运动信号的方法，其依赖于在MRI断层摄影装置中检测的身体的运动，其特征在于，在检查期间，其场作用在身体上的高频线圈系统（33; 34）的阻抗 （3）并且调谐到预定的共振频率是在谐振频率范围内测量的，其中运动信号是从刚刚形成的测量信号导出的。
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公开(公告)号：US4740081A
公开(公告)日：1988-04-26
申请号：US841127
申请日：1986-03-18
申请人： Gerhard Martens , Thomas Helzel
发明人： Gerhard Martens , Thomas Helzel
摘要： An optical sensor (1) is connected to an electro-optical transducer unit (35) and a measuring circuit (36) via an optical delay line (14) and an optical path (15). Error-free measurement values which are independent of the attenuation characteristics of the optical delay line (14) are obtained if the optical sensor (1) comprises a polarization splitter (3) which receives light pulses from the optical path (15) and from the optical delay line (14) and which is followed by a sensor body (2) which is traversed by the light pulses. A mirror (4) arranged on the side of the sensor body (2) on which the light is not incident reflects the light pulses back into the polarization splitter (3), which couples the light pulses back into the optical path (15) and the optical delay line (14).
摘要翻译： 光传感器（1）通过光延迟线（14）和光路（15）连接到电光换能器单元（35）和测量电路（36）。 如果光学传感器（1）包括从光路（15）接收光脉冲的偏振分离器（3）和从光路（15）接收光脉冲的偏振分离器（3），则获得与光学延迟线（14）的衰减特性无关的无差错测量值 光延迟线（14），其后面是由光脉冲穿过的传感器体（2）。 布置在其上没有入射的传感器主体（2）侧的反射镜（4）将光脉冲反射回偏振分离器（3），将光脉冲耦合回光路（15）和 光延迟线（14）。
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公开(公告)号：US4664129A
公开(公告)日：1987-05-12
申请号：US849917
申请日：1986-04-09
申请人： Thomas Helzel , Jurgen Kordts , Gerhard Martens
发明人： Thomas Helzel , Jurgen Kordts , Gerhard Martens
CPC分类号： A61B5/1107 , A61B5/1135 , A61B2562/0238 , A61B2562/228 , A61B5/6823 , A61B5/6831
摘要： An optical movement sensor for clearly accurately detecting deformations of a human body. The movement sensor consists of a belt with a buckle made up of two parts which are joined together mechanically by a light-transmitting sensor element. Transmitting and a receiving fibre optic light guides are connected to one part of the buckle in such a way that light emitted by the transmitting light guide passes through the sensor element by way of a polarizer and is coupled to the receiving light guide via an analyzer.
摘要翻译： 一种用于清晰准确地检测人体变形的光学运动传感器。 运动传感器由带有带扣的皮带组成，该皮带由两部分组成，这两部分由透光传感器元件机械连接在一起。 发射和接收光纤光导件以这样的方式连接到带扣的一部分，使得由透射光导引出的光通过偏振器穿过传感器元件，并通过分析器耦合到接收光导。
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6.发明授权
公开(公告)号：US4646086A
公开(公告)日：1987-02-24
申请号：US688100
申请日：1984-12-31
申请人： Thomas Helzel
发明人： Thomas Helzel
CPC分类号： A61B6/56 , H04B10/60 , H04B10/801
摘要： The invention relates to arrangement for data transmission between two mutually rotatable parts, in particular for computer tomographs, in which the signal can travel along two separate paths from transmitter to receiver, so that the phase angle and amplitude, respectively, of the received signal changes upon one rotation. For the signals propagating along the two distinct paths a separate receiving channel is provided for each path with a limiter amplifier, the output signals of the limiter amplifier being fed to inputs of an OR circuit whose output signal forms the output signal of the data transmission network.
摘要翻译： 本发明涉及用于两个可相互转动的部分之间的数据传输的装置，特别是对于计算机断层摄影机，其中信号可以沿着从发射机到接收机的两条分开的路径行进，从而分别接收信号的相位角和振幅改变 一次旋转 对于沿着两个不同路径传播的信号，为具有限幅放大器的每个路径提供单独的接收通道，限幅放大器的输出信号被馈送到输出信号形成数据传输网络的输出信号的OR电路 。
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公开(公告)号：US07136690B2
公开(公告)日：2006-11-14
申请号：US10848501
申请日：2004-05-19
IPC分类号： A61B5/04
CPC分类号： A61B5/0536 , A61B5/0408
摘要： The invention relates to an electrode for biomedical measurements, in particular for measurements for electrical impedance tomography, which permits measurements with as little interference as possible. The electrodes comprise a contact plate, a line driver with a high-impedance signal input and low-impedance line output and a current source, with a current output and a reference point, whereby the contact plate is connected to the high-impedance signal input of the line driver and to the current output of the current source and the line driver and the current source are arranged in the vicinity of the contact plate.
摘要翻译： 本发明涉及用于生物医学测量的电极，特别是用于电阻抗层析成像的测量，其允许以尽可能少的干扰进行测量。 电极包括接触板，具有高阻抗信号输入和低阻抗线路输出的线路驱动器和具有电流输出和参考点的电流源，由此接触板连接到高阻抗信号输入 的线路驱动器和电流源的电流输出，线路驱动器和电流源布置在接触板附近。
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公开(公告)号：US5279295A
公开(公告)日：1994-01-18
申请号：US616449
申请日：1990-11-20
申请人： Gerhard Martens , Jurgen Kordts , Thomas Helzel
发明人： Gerhard Martens , Jurgen Kordts , Thomas Helzel
IPC分类号： G01N21/31 , A61B5/00 , A61B5/055 , A61B5/145 , A61B5/1455
CPC分类号： A61B5/6826 , A61B5/055 , A61B5/14552 , A61B5/6838 , A61B5/7207
摘要： A sensor includes a pair of resiliently loaded jaws for receiving a finger, the sensor including a pair of fiber optic light transmitting guides secured in fixed spaced relation to one of the jaws for sensing blood in the finger tip. A control unit includes a light generator for transmitting light modulated at first and second frequencies to one of the guides via a light guide transfer section. The finger pulse modulates the received transmitted light. The modulated light is sensed by the other guide and returned to a receiver in the control unit via the transfer section for separating and demodulating the different frequency signals. The control unit includes a calculating unit which has two branches for processing and then combining by dividing the processed demodulated signals for determining the oxygen content of the blood from the relative magnitudes of the pulse-dependent modulation factor of the wave reflected from the finger.
摘要翻译： 传感器包括一对用于接收手指的弹性加载的夹爪，该传感器包括一对光纤透光导向器，其固定成与夹爪中的一个固定间隔开，以便感测指尖中的血液。 控制单元包括光发生器，用于经由光导传送部分将以第一和第二频率调制的光发射到一个引导件。 手指脉冲调制所接收的透射光。 经调制的光被另一个引导件感测，并通过传送部分返回到控制单元中的接收器，用于分离和解调不同的频率信号。 控制单元包括计算单元，该计算单元具有两个分支，用于根据从手指反射的波的脉冲相关调制因子的相对幅度中分离用于确定血氧含量的经处理的解调信号，然后进行组合。
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9.发明授权
公开(公告)号：US4496202A
公开(公告)日：1985-01-29
申请号：US502888
申请日：1983-06-09
CPC分类号： H01R39/643
摘要： The invention relates to a high voltage transfer device comprising two insulator bodies which are rotatable with respect to each other. In each insulator body there is embedded an electrode arrangement which horizontally encloses the axis of rotation. The two electrode arrangements together form a kind of Faraday cage, so that the field between the two electrode arrangements and in their vicinity is corrected and reduced.
摘要翻译： 本发明涉及一种包括可相对于彼此旋转的两个绝缘体的高电压传输装置。 在每个绝缘体中嵌有一个水平地围绕旋转轴线的电极装置。 两个电极布置一起形成一种法拉第笼，使得两个电极布置之间及其附近的场被校正和减少。
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