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。

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。

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.

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。

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.

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。

公开(公告)号：US5369624A

公开(公告)日：1994-11-29

申请号：US37765

申请日：1993-03-26

申请人： Hiroshi Fukukita ,  Lin X. Yao ,  Zoran Banjanin ,  Jin Kim ,  Hisashi Hagiwara ,  Masami Kawabuchi

发明人： Hiroshi Fukukita ,  Lin X. Yao ,  Zoran Banjanin ,  Jin Kim ,  Hisashi Hagiwara ,  Masami Kawabuchi

IPC分类号： A61B8/00 ,  G01S7/523 ,  G01S15/89 ,  G10K11/34 ,  G01S15/00

CPC分类号： G10K11/34

摘要： In accordance with the principles of the present invention, advantage is taken by the inventors of the fact that the speed of operation of the digital hardware in a digital beamformer having a plurality of parallel receiving channels can be reduced by providing multiple phases for the data signals supplied by each receiving channel and then processing the multi-phase data in N parallel summing paths. An interpolation-decimation filter receives the multi-phase data from the N parallel summing paths and provides at its output a signal having a reduced data rate (1/N). In accordance with this technique, the speed of operation of the individual digital circuits for forming the required beamforming delays are not increased as compared to conventional post-beamforming interpolation schemes, so that hereby the effective data rate is increased by a factor N and the delay quantization error is reduced by a factor N.

摘要翻译： 根据本发明的原理，本发明人的优点是可以通过为数据信号提供多个相位来减少具有多个并行接收信道的数字波束形成器中的数字硬件的操作速度 由每个接收信道提供，然后在N个并行求和路径中处理多相数据。 插值抽取滤波器从N个并行求和路径接收多相数据，并在其输出端提供具有降低的数据速率（1 / N）的信号。 根据该技术，与传统的后波束形成插值方案相比，用于形成所需波束形成延迟的各个数字电路的操作速度没有增加，因此有效数据速率增加了因子N和延迟 量化误差降低了因子N.

公开(公告)号：US5388079A

公开(公告)日：1995-02-07

申请号：US38572

申请日：1993-03-26

申请人： Jin Kim ,  Lin X. Yao ,  Zoran Banjanin ,  Hiroshi Fukukita ,  Hisashi Hagiwara ,  Masami Kawabuchi

发明人： Jin Kim ,  Lin X. Yao ,  Zoran Banjanin ,  Hiroshi Fukukita ,  Hisashi Hagiwara ,  Masami Kawabuchi

IPC分类号： G01V1/00 ,  A61B8/00 ,  G01N29/06 ,  G01N29/44 ,  G01S7/523 ,  G01S15/89 ,  G10K11/34 ,  G01S15/00

CPC分类号： G10K11/345

摘要： In accordance with the principles of the present invention, advantage is taken by the inventors of the fact that the speed of operation of the digital hardware in a digital beamformer can be reduced by providing, for example, multiple phases of the data signals and then processing the multi-phase data in N parallel summing paths. An interpolation-decimation filter receives the multi-phase data from the N parallel summing paths and provides at its output a signal having a reduced data rate (1/N). In accordance with this technique, the speed of operation of the individual digital circuits for forming the required beamforming delays is not increased as compared to conventional post-beamforming interpolation schemes, so that hereby the effective data rate is increased by a factor N and results in a decrease of the delay quantization error by a factor N. In accordance with the principles of the invention, the interpolation-decimation filter is incorporated into the beamformer at a most advantageous place. That is, it is incorporated into the beamformer processing after partial beamforming of a group of receive channels and before formation of the final beam. This approach allows the final beamforming to be simple and performed at a relatively low data rate and allows the higher rate signal processing to be confined to circuitry which may advantageously be on a single type of integrated circuit which is repetitively used in the beamformer.

摘要翻译： 根据本发明的原理，发明人的优点是可以通过提供例如数据信号的多个相位然后处理来减少数字波束形成器中的数字硬件的操作速度 N个并行求和路径中的多相数据。 插值抽取滤波器从N个并行求和路径接收多相数据，并在其输出端提供具有降低的数据速率（1 / N）的信号。 根据这种技术，与传统的后波束成形插值方案相比，用于形成所需波束成形延迟的各个数字电路的操作速度没有增加，因此有效数据速率增加了因子N，并导致 延迟量化误差减小因子N.根据本发明的原理，内插抽取滤波器在最有利的地方并入波束形成器中。 也就是说，它在一组接收通道的部分波束形成之后并且在形成最终波束之前被并入到波束形成器处理中。 这种方法允许最终的波束成形简单并且以相对较低的数据速率执行，并且允许较高速率的信号处理被限制在有利地可以在波束形成器中重复使用的单一类型的集成电路上的电路。

公开(公告)号：US08741231B2

公开(公告)日：2014-06-03

申请号：US14082356

申请日：2013-11-18

申请人： Minoru Asogawa ,  Hisashi Hagiwara ,  Tohru Hiramatsu

发明人： Minoru Asogawa ,  Hisashi Hagiwara ,  Tohru Hiramatsu

IPC分类号： G01N15/06

CPC分类号： B01L3/502738 ,  B01L3/50273 ,  B01L2300/0816 ,  B01L2300/0864 ,  B01L2300/0867 ,  B01L2300/0887 ,  B01L2300/123 ,  B01L2400/0481 ,  B01L2400/0655 ,  G01N35/1095 ,  G01N2035/00158 ,  G01N2035/1034 ,  Y10T137/8593 ,  Y10T436/11 ,  Y10T436/25 ,  Y10T436/2575

摘要： A channel control mechanism for a microchip has a laminated structure formed of members including elastic members, and includes: a sample reservoir for packing a sample therein; a reaction reservoir in which mixture and reaction of the sample are performed; and a channel formed in a middle layer of the laminated structure, for bringing the sample reservoir and the reaction reservoir into communication with each other. The channel control mechanism performs the reaction and analysis in such a manner that the sample is delivered into the reaction reservoir through the channel. A shutter channel (pressurizing channel) is provided in a layer different from a layer in which the channel is formed so that the pressurizing channel partially overlaps the channel. The channel is closed through applying a pressurized medium to the shutter channel (pressurizing channel), and the channel is opened through releasing a pressure of the pressurized medium.

公开(公告)号：US20090318806A1

公开(公告)日：2009-12-24

申请号：US11915884

申请日：2006-05-25

申请人： Hiroshi Kanai ,  Hideyuki Hasegawa ,  Hisashi Hagiwara

发明人： Hiroshi Kanai ,  Hideyuki Hasegawa ,  Hisashi Hagiwara

IPC分类号： A61B8/14

CPC分类号： A61B8/0858 ,  A61B5/02007 ,  A61B5/7221 ,  A61B5/7239 ,  A61B8/463 ,  A61B8/485 ,  G01S7/52042 ,  G01S7/5205 ,  G01S7/52077

摘要： An ultrasonic diagnostic apparatus according to the present invention includes: a transmitting section that generates a drive signal to drive a probe in order to transmit an ultrasonic wave toward a subject to be deformed periodically under stress; a receiving section for receiving an echo, produced when the ultrasonic wave is reflected from the subject, at the probe to generate a received echo signal; a computing section for figuring out a thickness change waveform, representing a variation in distance between two arbitrary measuring points on the subject, based on the received echo signal; and a reference waveform generating section for outputting a reference waveform. The apparatus obtains subject's internal information by comparing the thickness change waveform and the reference waveform to each other.

摘要翻译： 根据本发明的超声波诊断装置包括：发送部，其产生用于驱动探头的驱动信号，以便在应力下周期性地朝向被摄体发送超声波; 接收部，其在所述探头处接收在所述超声波从所述被检体反射时产生的回波，以产生接收到的回波信号; 计算部，用于根据所接收的回波信号求出厚度变化波形，表示被检体上两个任意的测量点之间的距离的变化; 以及用于输出参考波形的参考波形生成部。 该装置通过将厚度变化波形和参考波形相互比较来获得被摄体的内部信息。