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公开(公告)号：US5246006A
公开(公告)日：1993-09-21
申请号：US781840
申请日：1991-10-24
申请人： Hiroshi Kanda , Shinichiro Umemura , Hisashi Nishiyama , Ryuichi Shinomura , Kageyoshi Katakura , Shizuo Ishikawa , Koji Tanabe , Satoshi Tamano
发明人： Hiroshi Kanda , Shinichiro Umemura , Hisashi Nishiyama , Ryuichi Shinomura , Kageyoshi Katakura , Shizuo Ishikawa , Koji Tanabe , Satoshi Tamano
CPC分类号： G01S15/8981 , A61B8/06 , A61B8/13 , G01P5/244 , G01S7/52071
摘要： An ultrasonic flow mapping apparatus transmits and reflects waves from sampling points on a two-dimensional cross-section. The waves are detected while transmitting repeatedly ultrasonic pulses. The phase shifts of different reflected waves are calculated, and displayed in color to show a distribution of blood flow velocity. Artifact due to reflected waves from body organs, which remain even by using MTI filters, is detected from phase signals, which have not passed through the MTI filters, and the artifact is removed by lowering display brightness for a sampling point corresponding to a relevant detection output.
摘要翻译： 超声流量测绘装置在二维横截面上从采样点发射和反射波。 在发送重复的超声波脉冲时检测波。 计算不同反射波的相移，并以彩色显示，以显示血流速度的分布。 从没有通过MTI滤波器的相位信号中检测出由于身体器官的反射波而产生的人造物体，甚至通过使用MTI滤波器仍然保持人造物，并且通过降低对应于相关检测的采样点的显示亮度来消除伪像 输出。
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公开(公告)号：US4905206A
公开(公告)日：1990-02-27
申请号：US369656
申请日：1989-06-20
申请人： Hisashi Nishiyama , Kageyoshi Katakura , Toshio Ogawa , Satoshi Tamano , Koji Tanabe , Shizuo Ishikawa
发明人： Hisashi Nishiyama , Kageyoshi Katakura , Toshio Ogawa , Satoshi Tamano , Koji Tanabe , Shizuo Ishikawa
CPC分类号： G01F1/663 , G01S15/582 , G01S15/584
摘要： A flow meter, in which pulsed continuous ultrasonic wave is transmitted towards an object at predetermined intervals T to obtain a phase vector from a reception signal of wave reflected by the object and which calculates a Doppler frequency from the average value of phase differences between phase vectors at the sampling interval T to obtain a signal indicating the speed of the object, comprising a phase difference calculator by the auto-correlation method, by which a plurality of phase difference vectors indicating phase differences between phase vectors are added, the argument of the sum vector thus obtained representing the average phase difference, or a phase difference calculator by the 2-axial-component method, by which a phase difference is divided into 2 axial components, a cosine value and a sine value, and the average phase difference is obtained by using the average value for each of the components, and a phase difference calculator by the phase difference averaging calculator, by which a plurality of phase differences are added, as they are, to obtain the average thereof, in order to obtain a phase difference average value having small errors by switching them.
摘要翻译： 一种流量计，其中脉冲连续超声波以预定间隔T朝向物体传输，以从由物体反射的波的接收信号中获得相位矢量，并根据相位矢量之间的相位差的平均值计算多普勒频率 以采样间隔T，以获得指示对象速度的信号，包括通过自相关方法的相位差计算器，通过该相关方法将表示相位矢量之间的相位差的多个相位差矢量相加， 或通过2-轴分量法的相位差计算器，将相位差分成2个轴向分量，余弦值和正弦值，得到平均相位差 通过使用每个分量的平均值，以及通过相位差平均计算的相位差计算器 或者通过其相加多个相位差来获得其平均值，以便通过切换来获得具有较小误差的相位差平均值。
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公开(公告)号：US5515727A
公开(公告)日：1996-05-14
申请号：US124555
申请日：1993-09-22
申请人： Yuichi Miwa , Kageyoshi Katakura , Ryuichi Shinomura , Hiroshi Masuzawa , Yutaka Sato , Shizuo Ishikawa
发明人： Yuichi Miwa , Kageyoshi Katakura , Ryuichi Shinomura , Hiroshi Masuzawa , Yutaka Sato , Shizuo Ishikawa
IPC分类号： G01N29/07 , G01N29/11 , G01N29/36 , G01N29/44 , G01N29/46 , G01S7/52 , G10K11/34 , G01N29/00
CPC分类号： G01N29/4436 , G01N29/07 , G01N29/11 , G01N29/36 , G01N29/46 , G01S7/52026 , G01S7/52034 , G01S7/52095 , G10K11/346 , G01N2291/044
摘要： An ultrasound signal processor has a receiving signal digitizing circuit, waveform conversion circuit for mixing a produced digital signal by a reference signal, a cumulation circuit for performing a cumulation processing of a series of converted signals, a delay circuit subject to the cumulation processing, and a circuit for adding delayed signals, whereby the frequency of the receiving signal is shifted to a lower frequency and thereafter subjected to a cumulation processing which perform over-sampling technique so that the accuracy of an analog to digital conversion can be improved drastically. The ultrasound signal processor further has a circuit for converting a receiving signal into a low frequency signal by analog-mixing and a circuit for passing a low frequency component of the analog-converted signal, whereby a higher frequency receiving signal can be digitized even if the digitizing circuit has a insufficient sampling rate.
摘要翻译： 超声信号处理器具有接收信号数字化电路，用于通过参考信号混合产生的数字信号的波形转换电路，用于执行一系列转换信号的累积处理的累积电路，经历累积处理的延迟电路，以及 用于添加延迟信号的电路，由此将接收信号的频率转移到较低频率，然后进行执行过采样技术的累积处理，从而可以显着提高模数转换的精度。 超声信号处理器还具有通过模拟混合将接收信号转换为低频信号的电路和用于使模拟转换信号的低频分量通过的电路，由此即使 数字化电路的采样率不足。
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公开(公告)号：US4803993A
公开(公告)日：1989-02-14
申请号：US64564
申请日：1987-06-22
申请人： Hiroshi Ikeda , Shinichiro Umemura , Shizuo Ishikawa , Kageyoshi Katakura , Noriyoshi Ichikawa , Tsuyoshi Mitake
发明人： Hiroshi Ikeda , Shinichiro Umemura , Shizuo Ishikawa , Kageyoshi Katakura , Noriyoshi Ichikawa , Tsuyoshi Mitake
CPC分类号： H03H17/06 , G01S7/52028
摘要： An ultrasonic diagnosis apparatus includes a circuit unit for obtaining an envelope signal of a received ultrasonic signal, an A/D converter for A/D converting the envelope signal, and a circuit unit responsive to the output from the A/D converter for emphasizing the high frequency components of the envelope signal through a digital signal processing.
摘要翻译： 超声波诊断装置包括用于获得接收到的超声波信号的包络信号的电路单元，用于A / D转换包络信号的A / D转换器，以及响应于A / D转换器的输出的电路单元，用于强调 高频分量的包络信号通过数字信号处理。
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公开(公告)号：US4884448A
公开(公告)日：1989-12-05
申请号：US230972
申请日：1988-08-11
CPC分类号： G01S15/582 , G01P5/244 , G01N2291/02836
摘要： A ultrasonic Doppler meter for measuring the speed of a moving body by measuring the phase shift due to the Doppler effect on received signals, comprising a transmitting/receiving unit transmitting ultrasonic bursts with a constant time interval towards the moving body and receiving reflected waves; a unit for measuring a phase difference vector representing a difference between phases of received signals corresponding to two successive transmitted pulses; a unit for calculating a difference between phase differences on the basis of two successive phase difference vectors stated above; and an accumulation unit for adding the difference between phase differences to a preceeding phase difference vector so as to obtain the speed of the moving object.
摘要翻译： 一种超声波多普勒测量仪，用于通过测量由于对接收信号的多普勒效应引起的相位偏移来测量移动体的速度，该发射/接收单元以恒定的时间间隔向移动体发射超声波脉冲并接收反射波; 用于测量表示对应于两个连续发送脉冲的接收信号的相位差之间的相位差矢量的单元; 基于上述两个连续的相位差矢量来计算相位差之差的单元; 以及累积单元，用于将相位差之间的差加到先前的相位差矢量上，以获得移动物体的速度。
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公开(公告)号：US4955386A
公开(公告)日：1990-09-11
申请号：US456608
申请日：1989-12-27
CPC分类号： G01S15/582 , G01P5/244 , G01S15/52 , G01S15/584
摘要： A pulse doppler apparatus transmits a ultrasonic sound wave at transmission intervals T and T+Ts alternately and iteratively, detects the phase difference attributable to the doppler shift in the reflected sound wave signal at the interval T and the phase difference in the reflected signal at the interval T+Ts sequentially, detects the difference between both phase differences, and transforms the difference into a doppler frequency. The apparatus includes an MTI filter which exerts the same filtering characteristics on the reflected sound signals at both intervals T and T+Ts.
摘要翻译： 脉冲多普勒装置以传输间隔T和T + Ts交替地和迭代地发送超声波，以间隔T检测归因于反射声波信号中的多普勒频移的相位差，以及反射信号中的相位差 间隔T + Ts顺序地检测两个相位差之间的差异，并将该差变换为多普勒频率。 该装置包括在间隔T和T + Ts处对反射声音信号施加相同滤波特性的MTI滤波器。
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7.发明授权Needle-like ultrasonic probe for ultrasonic diagnosis apparatus, method of producing same, and ultrasonic diagnosis apparatus using same 失效超声波诊断装置的针状超声波探头及其制造方法以及使用该超声波诊断装置的超声波诊断装置
公开(公告)号：US5829439A
公开(公告)日：1998-11-03
申请号：US671010
申请日：1996-06-28
申请人： Koichi Yokosawa , Shizuo Ishikawa , Ryuichi Shinomura , Yukio Ito , Shuzo Sano , Hiroshi Kanda , Yutaka Sato , Toshio Kondo
发明人： Koichi Yokosawa , Shizuo Ishikawa , Ryuichi Shinomura , Yukio Ito , Shuzo Sano , Hiroshi Kanda , Yutaka Sato , Toshio Kondo
CPC分类号： A61B5/6848 , A61B8/0841 , A61B8/12 , A61B8/4461 , A61B8/463 , A61B8/445
摘要： A needle-like ultrasonic probe includes an inner needle received in a hollow, tubular outer needle for rotation about an axis thereof. The inner needle has a pointed distal end, and a notch is formed in an outer peripheral surface of that portion of the inner needle which is located adjacent to the distal end thereof. At least one ultrasonic transducer, as well as an acoustic lens for converging an ultrasonic wave, produced by the ultrasonic transducer, onto a point near to the outer peripheral surface of the inner needle, is provided in the notch. A filler, having an outer surface conforming to the outer peripheral surface of the inner needle, is fitted in the notch. With this construction, after the inner needle is smoothly stuck into a living tissue, even if it is rotated and axially moved, the living tissue is less affected or damaged by the inner needle.
摘要翻译： 针状超声波探头包括容纳在中空的管状外针中的内针，用于围绕其轴线旋转。 内针具有尖的远端，并且在内针的与其远端相邻的部分的外周面形成有切口。 至少一个超声波换能器以及用于将由超声波换能器产生的超声波收敛的声透镜设置在靠近内针外周面的点上。 具有与内针的外周面相符的外表面的填料装配在凹口中。 利用这种结构，即使内针被平滑地粘贴到生物体组织中，即使其旋转并轴向移动，生物体组织也不会受到内针的影响或损坏。
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公开(公告)号：US4809703A
公开(公告)日：1989-03-07
申请号：US101444
申请日：1987-09-28
CPC分类号： G01S15/582 , A61B8/06
摘要： An ultrasonic Doppler blood flow meter comprises a transmit-receive transducer transmitting ultrasonic wave toward and into a living body and receiving an echo signal, quadrature detectors detecting a real (R) component and an imaginary (I) component of the receiving echo signal respectively, A/D converters converting analog output signals of the quadrature detectors into digital signals respectively, a converter subjecting the R and I components to quadrature transformation to generate output signals representing the absolute value and phase angle (.theta.) respectively of the received echo signal, and a signal processing circuit calculating the mean value of the differences (.DELTA..theta..sub.i =.theta..sub.i -.theta..sub.i-1) between the phase angles (.theta..sub.i) and their preceding ones (.theta..sub.i-1) detected when the ultrasonic wave is transmitted and the echo signal is received a predetermined number of times. In the signal processing circuit, the phase angle differences (.DELTA..theta.) are each resolved into an X-axis component (cos .DELTA..theta.) and a Y-axis component (sin.DELTA..theta.), and, after calculation of the mean values X and Y of n consecutive X-axis and Y-axis components respectively, the mean Doppler shift phase angle .DELTA..theta.=tan.sup.-1 (Y/X) is calculated on the basis of the calculated mean values X and Y.
摘要翻译： 一种超声波多普勒血流计包括发射 - 接收传感器，其向生物体传送超声波并接收回波信号，正交检测器分别检测接收回波信号的实部（R）分量和虚部（I）分量， A / D转换器将正交检测器的模拟输出信号分别转换为数字信号，转换器对R和I分量进行正交变换，以产生表示接收到的回波信号的绝对值和相位角（θ）的输出信号，以及 信号处理电路，计算在超声波传输时检测到的相位角（θi）和它们之前的相位角（θi-1）之间的差值（ΔTATA=θi-θi-1） 回波信号被接收预定次数。 在信号处理电路中，相位角差（DELTAθ）分别被分解为X轴分量（cosDTATA）和Y轴分量（sinΔTATAθ），并且在计算平均值和上限＆amp; X 和n个连续的X轴和Y轴分量的＆amp; upbar＆Y，平均多普勒频移相位角DELTAθ= tan-1（＆upbar＆Y /＆upbar＆X）是基于计算的平均值＆upbar＆X和＆upbar＆Y 。
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公开(公告)号：US08033259B2
公开(公告)日：2011-10-11
申请号：US12654611
申请日：2009-12-24
申请人： Shizuo Ishikawa
发明人： Shizuo Ishikawa
CPC分类号： F01L1/18 , Y10T74/20882
摘要： A rocker arm includes a roller brought into contact with a cam to be rotated and an arm body having a storage portion for the roller. The storage portion has an opening edge including a part receiving lubricant oil flowing along an upper surface of the arm body. The part is formed with a receiving opening edge jutting out so that both widthwise ends are located away from a circumferential surface of the roller and so that a widthwise central portion comes closer to the circumferential surface of the roller. The arm body has a lubricant guide path formed by recessing the upper surface thereof and guiding the lubricant oil into the storage portion. The lubricant guide path has a width that is gradually rendered larger as the lubricant guide path gets close to the widthwise central portion of the receiving opening edge.
摘要翻译： 摇臂包括与要旋转的凸轮接触的辊和具有用于辊的存储部的臂体。 存储部具有开口边缘，该开口边缘包括沿臂体的上表面流动的润滑油的部分。 该部分形成有突出的接收开口边缘，使得两个宽度端部远离辊的圆周表面定位，并且宽度方向的中心部分更靠近辊的圆周表面。 臂体具有通过使其上表面凹陷并将润滑油引导到储存部分中而形成的润滑剂引导路径。 润滑剂引导路径的宽度随着润滑剂引导路径靠近接收口边缘的宽度方向中心部而逐渐变大。
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公开(公告)号：US20100180846A1
公开(公告)日：2010-07-22
申请号：US12654611
申请日：2009-12-24
申请人： Shizuo Ishikawa
发明人： Shizuo Ishikawa
CPC分类号： F01L1/18 , Y10T74/20882
摘要： A rocker arm for an internal combustion engine includes a roller brought into contact with a cam thereby to be rotated, an arm body having a storage portion in which the roller is stored, the arm body being swung by rotation of the cam, thereby opening and closing a valve. The storage portion has an opening edge located on an upper surface of the arm body and opposed to a circumferential surface of the roller, and the opening edge includes a part receiving a lubricant flowing along the upper surface of the arm body, the part being formed with a receiving opening edge jutting out so that both widthwise ends thereof are located away from the circumferential surface of the roller and so that a widthwise central portion thereof comes close to the circumferential surface of the roller.
摘要翻译： 用于内燃机的摇臂包括与凸轮相接触以便旋转的辊，具有存放辊的储存部分的臂主体，臂主体通过凸轮的旋转摆动，从而打开和 关闭阀门 存储部具有位于臂主体的上表面并与辊的周面相对的开口边缘，开口边缘包括容纳沿着臂主体的上表面流动的润滑剂的部分，该部分形成 其中接收开口边缘突出，使得其宽度方向两端位于远离辊的圆周表面的位置，并且其宽度方向的中心部分靠近辊的圆周表面。
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