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1. 发明授权

US5261407A Ultrasonic doppler blood-flow meter 失效
标题翻译：超声波多普勒血流计
公开(公告)号：US5261407A
公开(公告)日：1993-11-16
申请号：US796596
申请日：1991-11-22
申请人： Mori Nishigaki , Hiroshi Fukukita , Hisashi Hagiwara , Junichiro Ninomiya
发明人： Mori Nishigaki , Hiroshi Fukukita , Hisashi Hagiwara , Junichiro Ninomiya
IPC分类号： A61B8/06 , G01P5/00 , G01S15/89 , H03F1/30 , H03G3/34
CPC分类号： H03G3/34 , G01S15/8979 , H03F1/303
摘要： There is provided an ultrasonic Doppler blood-flow meter which can suppress the occurrence of unwanted frequency components by suppressing the jump of signal to thereby produce images of high quality A DC feedback circuit is provided which negatively feeds back a Doppler deviated signal produced from an integrator to the input thereof. The feedback amount of the DC feedback circuit is changed in synchronism with the timing for switching between the B-mode transmission/reception sequence and the Doppler mode sequence to prevent a jump of a signal at the commencement of the Doppler mode. The feedback amount of the DC feedback circuit is made to be different for the gate moving sequence and the Doppler mode sequence, thereby preventing a jump of a transient signal due to a discontinuous input signal at the commencement of the Doppler mode.

2. 发明授权

US06425872B1 System for measuring physical parameter utilizing vibration transmission 失效
标题翻译：利用振动传播测量物理参数的系统
公开(公告)号：US06425872B1
公开(公告)日：2002-07-30
申请号：US09690821
申请日：2000-10-18
申请人： Hisashi Hagiwara , Hiroshi Fukukita , Kinya Hasegawa , Yushi Nishimura
发明人： Hisashi Hagiwara , Hiroshi Fukukita , Kinya Hasegawa , Yushi Nishimura
IPC分类号： A61B500
CPC分类号： A61B5/02133
摘要： A physical parameter measuring system is provided which measures a physical parameter such as a blood pressure of a person using oscillation transmission. The system includes a phase detector, an A/D converter, an arc center determining circuit, and a phase angle determining circuit. The phase detector detects a phase of a sensor signal produced, in sequence, by monitoring oscillations which are applied by an exciter and transmitted through a living body to map the signal on a two-dimensional plane as a sample point. The A/D converter converts the sample point signal into a digital sample point signal in sequence. The arc center determining circuit determines a center of an arc defined by a distribution of the sample points mapped for a given period of time. The arc determining circuit selects the sample points which are located at an interval greater than a given reference sample-to-sample distance to form a sample group consisting of at least three of the selected sample points and determines a center of a circle passing through the sample group as the center of the arc. The phase angle determining circuit determines a phase angle of the sample point as viewed from the arc center determined by the arc center determining circuit and provides it as a parameter used to determine a physical parameter of the subject.
摘要翻译：提供了一种物理参数测量系统，其测量使用振荡传输的人的血压等物理参数。该系统包括相位检测器，A / D转换器，电弧中心确定电路和相位角确定电路。相位检测器通过监视由激励器施加并通过活体传输的振荡来依次检测产生的传感器信号的相位，以将二维平面上的信号映射为采样点。 A / D转换器将采样点信号顺序转换成数字采样点信号。电弧中心确定电路确定由给定时间段映射的采样点的分布定义的弧的中心。电弧确定电路选择位于大于给定参考采样间距离的间隔的采样点，以形成由至少三个所选取样点组成的采样组，并且确定通过所述采样点的圆的中心样品组为圆弧的中心。相位角确定电路确定从圆弧中心确定电路确定的从圆弧中心观察的采样点的相位角，并将其提供为用于确定被摄体的物理参数的参数。

3. 发明授权

US6106469A Method and apparatus for reducing undesired multiple-echo signal in ultrasound imaging 失效
标题翻译：用于减少超声成像中不需要的多重回波信号的方法和装置
公开(公告)号：US6106469A
公开(公告)日：2000-08-22
申请号：US299002
申请日：1999-04-26
申请人： Takao Suzuki , Hisashi Hagiwara , Hiroshi Fukukita
发明人： Takao Suzuki , Hisashi Hagiwara , Hiroshi Fukukita
IPC分类号： A61B8/00 , G01S7/52 , G01S15/89
CPC分类号： G01S15/894 , G01S7/52026
摘要： First 1-sound-line received signals are successively generated from an output signal of a transducer. One is selected from among the generated first 1-sound-line received signals as a 1-sound-line received signal of interest. Second 1-sound-line received signals are selected from among the generated first 1-sound-line received signals. The second 1-sound-line received signals include a 1 -sound-line received signal preceding the 1-sound-line received signal of interest and also a 1-sound-line received signal following the 1-sound-line received signal of interest. The second 1-sound-line received signals are averaged into a mean 1-sound-line received signal which corresponds to an undesired multiple-echo signal. The mean 1-sound-line received signal is subtracted from the 1-sound-line received signal of interest to remove the undesired multiple-echo signal from the 1-sound-line received signal of interest.
摘要翻译：从换能器的输出信号连续生成第一个1声线接收信号。从所生成的第一1-声线接收信号中选择一个作为感兴趣的1-声线接收信号。从生成的第一1声线接收信号中选择第2个1声线接收信号。第二个1声线接收信号包括在感兴趣的1声线接收信号之前的1声线接收信号，以及跟随感兴趣的1-声线接收信号之后的1-声线接收信号。第二个1声线接收信号被平均为对应于不期望的多回波信号的平均1声线接收信号。从感兴趣的1声线接收信号中减去平均1声线接收信号，以从感兴趣的1声线接收信号中去除不想要的多回波信号。

4. 发明授权

US5269308A Ultrasonic doppler imaging apparatus 失效
标题翻译：超声多普勒成像装置
公开(公告)号：US5269308A
公开(公告)日：1993-12-14
申请号：US912752
申请日：1992-07-13
申请人： Hisashi Hagiwara , Hiroshi Fukukita , Morio Nishigaki
发明人： Hisashi Hagiwara , Hiroshi Fukukita , Morio Nishigaki
IPC分类号： A61B8/06
CPC分类号： A61B8/06 , G01S15/8981
摘要： Disclosed is an ultrasonic Doppler imaging apparatus in which the velocity of a blood flow in a living body can be computed with high precision without increasing a scale of a signal processing circuit, so that a Doppler color image having satisfactory image quality is displayed. In the apparatus, an ultrasonic pulse signal is transmitted into the living body and is reflected from a target in the living body to be received by an ultrasonic probe, and the reception signal is subjected to quadrature phase detection to obtain an I signal and a Q signal. When an amplitude evaluating unit evaluates on the basis of the intensity of the I and Q signals that the reception signal contains many clutter components, a cut-off frequency of high-pass filters is increased by the application of a control signal (A) to thereby eliminate low-frequency clutter components. The outputs of the high-pass filters are converted into blood flow velocity information to be displayed as a Doppler color image.

5. 发明授权

US06364836B1 Ultrasound diagnostic apparatus 失效
标题翻译：超声诊断仪
公开(公告)号：US06364836B1
公开(公告)日：2002-04-02
申请号：US09634857
申请日：2000-08-08
申请人： Hiroshi Fukukita , Morio Nishigaki , Hisashi Hagiwara
发明人： Hiroshi Fukukita , Morio Nishigaki , Hisashi Hagiwara
IPC分类号： A61B800
CPC分类号： G01S7/52066 , G01S7/52046 , G01S15/8979 , G10K11/346
摘要： An ultrasound diagnostic apparatus includes a probe which outputs RF signals. There are N phase detectors for converting the RF signals outputted from the probe into baseband signals In and Qn, where “N” denotes a first predetermined natural number and “n” denotes a second predetermined natural number set as 2≦n≦N. A reception beam former operates for processing the baseband signals In and Qn into a time-division-multiplexed signal. The reception beam former includes a device for multiplying the baseband signals In and Qn by phase shift data to generate multiplication-resultant signals, a device for delaying the multiplication-resultant signals to generate delay-resultant signals, and a device for combining the delay-resultant signals into the time-division-multiplexed signal.
摘要翻译：超声波诊断装置包括输出RF信号的探针。存在用于将从探测器输出的RF信号转换为基带信号In和Qn的N相检测器，其中“N”表示第一预定自然数，“n”表示设置为2 <= n

6. 发明授权

US06275447B1 Sound generating apparatus, a sound detection apparatus, an acoustic sensor, and an acoustic living body measuring apparatus 有权
标题翻译：声音产生装置，声音检测装置，声音传感器和声学生物体测量装置
公开(公告)号：US06275447B1
公开(公告)日：2001-08-14
申请号：US09247561
申请日：1999-02-10
申请人： Hiroshi Fukukita , Hisashi Hagiwara
发明人： Hiroshi Fukukita , Hisashi Hagiwara
IPC分类号： G03B4206
CPC分类号： G03B42/06
摘要： A sound generating apparatus or a sound detecting apparatus includes: a flexible substrate; and a plurality of bimorphs arranged on a surface of the flexible substrate in a direction at a predetermined interval, each of the bimorphs having input/output terminals. Each of the bimorphs has a rectangular shape and its longitudinal direction is perpendicular to the direction. The flexible substrate has a slit between successive two of the bimorphs. A width of the slit outside the bimorphs is wide. A buffering material covering surfaces of the flexible substrate with the bimorphs exposed or a cover covering the bimorphs with a space may be provided. The cover and the buffering material may have slit. A sound generating apparatus including a plurality of flexible substrates respectively supporting bimorphs may be provided. The flexible substrate may have a comb shape. An acoustic sensor includes the sound generating apparatus, the sound detection apparatus connected therebetween by a flexible substrate, wherein the flexible substrate may include a cable and a connector. A living body measuring apparatus includes the acoustic sensor, wherein phase shift between the sound signal induced by the bimorph and a reference drive signal is detected and a blood pressure is operated by the phase shift amount.
摘要翻译：发声装置或声音检测装置包括：柔性基板; 以及以预定间隔布置在柔性基板的表面上的多个双压电晶片，每个双压电晶片具有输入/输出端子。每个双压电晶片具有矩形，其纵向方向垂直于方向。柔性基板在连续两个双压电晶片之间具有狭缝。双压电晶片外侧的狭缝宽度很宽。可以提供覆盖柔性基板的表面的缓冲材料，其中露出双压电晶片或用空间覆盖双压电晶片。盖和缓冲材料可以具有狭缝。可以提供包括分别支撑双压电晶片的多个柔性衬底的发声装置。柔性基板可以具有梳形。声学传感器包括声音产生装置，声音检测装置通过柔性基板连接在其上，其中柔性基板可以包括电缆和连接器。生物体测量装置包括声传感器，其中检测由双压电晶片引起的声音信号与参考驱动信号之间的相移，并通过相移量操作血压。

7. 发明授权

US5311870A Ultrasonic Doppler imaging apparatus 失效
标题翻译：超声多普勒成像仪
公开(公告)号：US5311870A
公开(公告)日：1994-05-17
申请号：US878623
申请日：1992-05-05
申请人： Hiroshi Fukukita , Hisashi Hagiwara , Morio Nishigaki , Yasuhiro Nakamura
发明人： Hiroshi Fukukita , Hisashi Hagiwara , Morio Nishigaki , Yasuhiro Nakamura
IPC分类号： A61B8/06 , G01P5/00 , G01S15/58 , G01S15/89 , H03D3/00
CPC分类号： G01S15/582 , G01S15/8979 , H03D3/007 , H03D2200/005 , H03D2200/0062
摘要： An ultrasonic Doppler imaging apparatus emits ultrasonic pulse waves to an object body under test and provides information on blood flow in the body based on Doppler shifts of ultrasonic waves reflected back from the object body. The ultrasonic pulse waves emitted by a probe to the object body undergo Doppler shifts by being reflected by the blood stream, and the reflected ultrasonic waves received by the probe are decomposed with an A/D converter in synchronism with emission. The decomposed data are transformed into complex Doppler data through a quadrature addition/subtraction by quadrature addition/subtraction means. The complex Doppler data is subjected to frequency analysis through correlative computation or the like, and resulting data is stored in a frame memory and displayed. The apparatus is capable of measuring the Doppler shift frequency accurately.
摘要翻译：超声波多普勒成像装置向被检测物体发射超声波脉冲波，并且基于从物体反射回来的超声波的多普勒频移，提供关于体内血流量的信息。由探针发射到物体的超声脉冲波被血流反射而进行多普勒频移，并且由A / D转换器与发射同步地将由探头接收的反射的超声波分解。分解的数据通过正交加法/减法装置的正交加减法变换为复数多普勒数据。通过相关计算等对复数多普勒数据进行频率分析，将结果数据存储在帧存储器中并进行显示。该装置能够准确地测量多普勒频移频率。

8. 发明授权

US5220923A Ultrasonic doppler blood flowmeter 失效
标题翻译：超声波多普勒血液流量计
公开(公告)号：US5220923A
公开(公告)日：1993-06-22
申请号：US746416
申请日：1991-08-16
申请人： Hisashi Hagiwara , Hiroshi Fukukita , Yoshinobu Watanabe , Yoshinao Tannaka
发明人： Hisashi Hagiwara , Hiroshi Fukukita , Yoshinobu Watanabe , Yoshinao Tannaka
IPC分类号： A61B8/06 , G01S15/89
CPC分类号： A61B8/06 , G01S15/8979
摘要： An ultrasonic Doppler blood flowmeter has a Doppler scanning mode of operation to obtain information about blood speed and a B mode of operation to obtain information for a tomogram. In order to produce supplementary Doppler shift data for use during a B-mode scanning period, Doppler shift data from a phase detector is treated as complex data, and the difference in argument between two consecutive, complex Doppler shift data is detected. The supplementary Doppler shift data can then be calculated by an arithmetic circuit on the basis of the difference in argument between the consecutive complex Doppler shift data.

9. 发明授权

US06354998B1 Blood pressure determining apparatus and method of determining excitation frequency used in the same 有权
标题翻译：血压测定装置及其中使用的激励频率的确定方法
公开(公告)号：US06354998B1
公开(公告)日：2002-03-12
申请号：US09617133
申请日：2000-07-14
申请人： Hisashi Hagiwara , Hiroshi Fukukita , Kinya Hasegawa , Yushi Nishimura
发明人： Hisashi Hagiwara , Hiroshi Fukukita , Kinya Hasegawa , Yushi Nishimura
IPC分类号： A61B500
CPC分类号： A61B5/02133 , A61B5/022
摘要： A blood pressure determining apparatus is provided which applies oscillations to the blood vessel of a subject through an exciter to determine the blood pressure based on the frequency of the oscillations propagated through the blood vessel measured by an oscillation sensor. The apparatus monitors an output of the oscillation sensor when the exciter applies no oscillation to the subject to determine the power spectrum of noise signals contained in the output and sets the frequency of oscillations to be applied to the blood vessel to any value within a band of the power spectrum in which the power of noise is small. This enables the blood pressure to be determined without influence of any electric disturbances from peripheral devices.
摘要翻译：提供了一种血压测定装置，其通过激励器对受试者的血管施加振动，以基于由振动传感器测量的通过血管传播的振荡的频率来确定血压。当激励器对受试者施加振荡时，该装置监视振荡传感器的输出，以确定输出中包含的噪声信号的功率谱，并将施加于血管的振荡频率设定为噪声功率小的功率谱。这使得能够确定血压而不受来自外围设备的任何电扰动的影响。

10. 发明授权

US5419333A Ultrasonic doppler blood flow meter apparatus 失效
标题翻译：超声波多普勒血流计仪表
公开(公告)号：US5419333A
公开(公告)日：1995-05-30
申请号：US202471
申请日：1994-02-28
申请人： Hisashi Hagiwara , Hiroshi Fukukita , Morio Nishigaki , Yoshihiko Ito
发明人： Hisashi Hagiwara , Hiroshi Fukukita , Morio Nishigaki , Yoshihiko Ito
IPC分类号： A61B8/06 , G01P5/00 , A61B8/00
CPC分类号： A61B8/06 , G01S15/8981
摘要： An ultrasonic Doppler blood flow meter apparatus includes a wall filter for eliminating clutter from an echo signal of an ultrasonic pulse signal sent to a living being under test. The wall filter includes a switch for cutting a part of input data and a control unit for controlling the switch such that the switch is opened during a period in which first m data (where m is integer) is inputted to undergo filtering by the wall filter while the switch is closed during a period in which data following the (m+1)-th data inclusive thereof are inputted.
摘要翻译：一种超声波多普勒血流计装置，包括：壁滤波器，用于消除发送给被测生物的超声波脉冲信号的回波信号的杂波。壁滤器包括用于切割输入数据的一部分的开关和用于控制开关的控制单元，使得在输入第一m个数据（其中m是整数）的时段期间开关被打开以经过壁滤器同时在其中输入了包括第（m + 1）个数据之后的数据的时段期间关闭开关。

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