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1. 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。

2. 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。

3. 发明授权

US06802815B2 Noninvasive continuous blood pressure measuring apparatus and a method of noninvasively measuring continuous blood pressure 失效
标题翻译：无创连续血压测量仪器和无创测量连续血压的方法
公开(公告)号：US06802815B2
公开(公告)日：2004-10-12
申请号：US10721083
申请日：2003-11-26
申请人： Kinya Hasegawa , Yushi Nishimura , Hisashi Hagiwara
发明人： Kinya Hasegawa , Yushi Nishimura , Hisashi Hagiwara
IPC分类号： A61B500
CPC分类号： A61B5/02133 , A61B5/021 , A61B5/02116 , A61B2562/0247 , A61B2562/043
摘要： One of pairs of an exciter and a sensor is selected in accordance with the detection signal which is derived from an exciter waveform induced in an artery transmitted therethrough. The pairs of exciters and sensors are arranged on a substrate in various formations. A/D converters are provided to respective detection signals. A frequency of the oscillation signal supplied to the exciter is controlled by various oscillation signal generation circuits. Bandpass filtering for extracting the exciter waveform, low-pass-filtering for extracting a natural blood pressure waveform, phase difference detection processes are provided by a microprocessor, wherein the bandpass filtering and low-pass-filtering processes may be replaced with a bandpass filter and a low pass filter, and their outputs are selected by a switching circuit and supplied to the microprocessor through one a/d converter. The frequency of the oscillation signal is controlled to an optimum frequency by detecting the detection signal and estimating the attenuation, dispersion, phase shift with respect to different frequency and by determining one of the different frequency in accordance with the estimation result. The waveform of the oscillation signal is controlled to an optimum waveform similarly.
摘要翻译：根据从通过其传输的动脉中感应的激励器波形导出的检测信号来选择一对激励器和传感器。激励器和传感器对被布置在各种形式的基板上。 A / D转换器被提供给相应的检测信号。提供给励磁机的振荡信号的频率由各种振荡信号发生电路控制。用于提取激励器波形的带通滤波器，用于提取自然血压波形的低通滤波，相位差检测处理由微处理器提供，其中带通滤波和低通滤波处理可以被带通滤波器代替，低通滤波器，其输出由开关电路选择，并通过一个a / d转换器提供给微处理器。通过检测检测信号并估计相对于不同频率的衰减，色散，相移以及根据估计结果确定不同频率之一，将振荡信号的频率控制到最佳频率。振荡信号的波形类似地被控制到最佳波形。

4. 发明授权

US06358212B1 Noninvasive continuous blood pressure measuring apparatus and a method of noninvasively measuring continuous blood pressure 失效
标题翻译：无创连续血压测量仪器和无创测量连续血压的方法
公开(公告)号：US06358212B1
公开(公告)日：2002-03-19
申请号：US09290394
申请日：1999-04-13
申请人： Kinya Hasegawa , Yushi Nishimura , Hisashi Hagiwara
发明人： Kinya Hasegawa , Yushi Nishimura , Hisashi Hagiwara
IPC分类号： A61B500
CPC分类号： A61B5/02133 , A61B5/021 , A61B5/02116 , A61B2562/0247 , A61B2562/043
摘要： One of pairs of an exciter and a sensor is selected in accordance with the detection signal which is derived from an exciter waveform induced in an artery transmitted therethrough. The pairs of exciters and sensors are arranged on a substrate in various formations. A/D converters are provided to respective detection signals. A frequency of the oscillation signal supplied to the exciter is controlled by various oscillation signal generation circuits. Bandpass filtering for extracting the exciter waveform, low-pass-filtering for extracting a natural blood pressure waveform, phase difference detection processes are provided by a microprocessor, wherein the bandpass filtering and low-pass-filtering processes may be replaced with a bandpass filter and a low pass filter, and their outputs are selected by a switching circuit and supplied to the microprocessor through one a/d converter. The frequency of the oscillation signal is controlled to an optimum frequency by detecting the detection signal and estimating the attenuation, dispersion, phase shift with respect to different frequency and by determining one of the different frequency in accordance with the estimation result. The waveform of the oscillation signal is controlled to an optimum waveform similarly.
摘要翻译：根据从通过其传输的动脉中感应的激励器波形导出的检测信号来选择一对激励器和传感器。激励器和传感器对被布置在各种形式的基板上。 A / D转换器被提供给相应的检测信号。提供给励磁机的振荡信号的频率由各种振荡信号发生电路控制。用于提取激励器波形的带通滤波器，用于提取自然血压波形的低通滤波，相位差检测处理由微处理器提供，其中带通滤波和低通滤波处理可以被带通滤波器代替，低通滤波器，其输出由开关电路选择，并通过一个a / d转换器提供给微处理器。通过检测检测信号并估计相对于不同频率的衰减，色散，相移以及根据估计结果确定不同频率之一，将振荡信号的频率控制到最佳频率。振荡信号的波形类似地被控制到最佳波形。

5. 发明授权

US06966879B2 Noninvasive continuous blood pressure measuring apparatus and a method of noninvasively measuring continuous blood pressure 失效
标题翻译：无创连续血压测量仪器和无创测量连续血压的方法
公开(公告)号：US06966879B2
公开(公告)日：2005-11-22
申请号：US10721076
申请日：2003-11-26
申请人： Kinya Hasegawa , Yushi Nishimura , Hisashi Hagiwara
发明人： Kinya Hasegawa , Yushi Nishimura , Hisashi Hagiwara
IPC分类号： A61B5/00 , A61B5/02 , A61B5/021
CPC分类号： A61B5/02133 , A61B5/021 , A61B5/02116 , A61B2562/0247 , A61B2562/043
摘要： One of pairs of an exciter and a sensor is selected in accordance with the detection signal which is derived from an exciter waveform induced in an artery transmitted therethrough. The pairs of exciters and sensors are arranged on a substrate in various formations. A/D converters are provided to respective detection signals. A frequency of the oscillation signal supplied to the exciter is controlled by various oscillation signal generation circuits. Bandpass filtering for extracting the exciter waveform, low-pass-filtering for extracting a natural blood pressure waveform, phase difference detection processes are provided by a microprocessor, wherein the bandpass filtering and low-pass-filtering processes may be replaced with a bandpass filter and a low pass filter, and their outputs are selected by a switching circuit and supplied to the microprocessor through one a/d converter. The frequency of the oscillation signal is controlled to an optimum frequency by detecting the detection signal and estimating the attenuation, dispersion, phase shift with respect to different frequency and by determining one of the different frequency in accordance with the estimation result. The waveform of the oscillation signal is controlled to an optimum waveform similarly.
摘要翻译：根据从通过其传输的动脉中感应的激励器波形导出的检测信号来选择一对激励器和传感器。激励器和传感器对被布置在各种形式的基板上。 A / D转换器被提供给相应的检测信号。提供给励磁机的振荡信号的频率由各种振荡信号发生电路控制。用于提取激励器波形的带通滤波器，用于提取自然血压波形的低通滤波，相位差检测处理由微处理器提供，其中带通滤波和低通滤波处理可以被带通滤波器代替，低通滤波器，其输出由开关电路选择，并通过一个a / d转换器提供给微处理器。通过检测检测信号并估计相对于不同频率的衰减，色散，相移以及根据估计结果确定不同频率之一，将振荡信号的频率控制到最佳频率。振荡信号的波形类似地被控制到最佳波形。

6. 发明授权

US06743178B2 Noninvasive continuous blood pressure measuring apparatus and a method of noninvasively measuring continuous blood pressure 失效
公开(公告)号：US06743178B2
公开(公告)日：2004-06-01
申请号：US10057910
申请日：2002-01-29
申请人： Kinya Hasegawa , Yushi Nishimura , Hisashi Hagiwara
发明人： Kinya Hasegawa , Yushi Nishimura , Hisashi Hagiwara
IPC分类号： A61B500
CPC分类号： A61B5/02133 , A61B5/021 , A61B5/02116 , A61B2562/0247 , A61B2562/043
摘要： One of pairs of an exciter and a sensor is selected in accordance with the detection signal which is derived from an exciter waveform induced in an artery transmitted therethrough. The pairs of exciters and sensors are arranged on a substrate in various formations. A/D converters are provided to respective detection signals. A frequency of the oscillation signal supplied to the exciter is controlled by various oscillation signal generation circuits. Bandpass filtering for extracting the exciter waveform, low-pass-filtering for extracting a natural blood pressure waveform, phase difference detection processes are provided by a microprocessor, wherein the bandpass filtering and low-pass-filtering processes may be replaced with a bandpass filter and a low pass filter, and their outputs are selected by a switching circuit and supplied to the microprocessor through one a/d converter. The frequency of the oscillation signal is controlled to an optimum frequency by detecting the detection signal and estimating the attenuation, dispersion, phase shift with respect to different frequency and by determining one of the different frequency in accordance with the estimation result. The waveform of the oscillation signal is controlled to an optimum waveform similarly.

7. 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。

8. 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.

9. 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.

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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