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61. 发明专利

JPH08224237A ULTRASONIC DOPPLER DIAGNOSING DEVICE 失效
公开(公告)号：JPH08224237A
公开(公告)日：1996-09-03
申请号：JP5376595
申请日：1995-02-20
申请人： HITACHI MEDICAL CORP
发明人： IZUMI MIKIO
IPC分类号： G01P5/00 , A61B8/00
摘要： PURPOSE: To accurately measure bloodstream speed even in a slow speed bloodstream by eliminating a relative speed-component between an examinee and a probe in an ultrasonic Doppler diagnosing device. CONSTITUTION: A relative speed estimating part 12 as a means to estimate by calculating the relative speed of the examinee and the probe 1 by fetching complex signals S1 , S2 obtained in Doppler detecting parts 4a, 4b is provided. Also, a complex multiplier 13 is provided as a means to eliminate the relative speed component of the examinee and the probe 1 from the frequency spectrum of a Doppler detection signal by inputting the estimated value of the relative speed from the relative speed estimating part 12 and inputting the Doppler detection signal obtained in the Doppler detecting parts 4a, 4b. In this way, it is possible to accurately measure the bloodstream speed even in the slow speed bloodstream by eliminating the relative speed component of the examinee and the probe 1.

62. 发明专利

JPH07275241A ULTRASONIC DOPPLER DIAGNOSTIC DEVICE 失效
公开(公告)号：JPH07275241A
公开(公告)日：1995-10-24
申请号：JP9547994
申请日：1994-04-11
申请人： HITACHI MEDICAL CORP
发明人： IZUMI MIKIO
IPC分类号： G01N29/44 , A61B8/06 , G01N29/22
摘要： PURPOSE:To improve both frequency resolution and time resolution in the processing of Doppler signals so as to enable spectrum display with high resolution in an ultrasonic Doppler diagnostic device. CONSTITUTION:An absolute value computing element 6 and a group delay quantity computing means 15 are provided in parallel. The absolute value computing element 6 computes the absolute value of Fourier conversion output from a frequency analyzer 5 so as to obtain power spectrum data, and the means 15 computes phase angle data to the frequency of Fourier conversion output from the frequency analyzer 5 and also computes group delay quantity by difference calculation every frequency of this phase angle data. On the basis of both computed results of the absolute value computing element 6 and group delay quantity computing means 15, the power spectrum data is selected and displayed on a time axis according to the group delay quantity. Both frequency resolution and time resolution are thereby improved in the processing of Doppler signals collected from a testee so as to enable spectrum display with high resolution.

63. 发明专利

JPH0751270A ULTRASONIC DIAGNOSTIC DEVICE 失效
公开(公告)号：JPH0751270A
公开(公告)日：1995-02-28
申请号：JP22049993
申请日：1993-08-13
申请人： HITACHI MEDICAL CORP
发明人： KANDA HIROSHI , IZUMI MIKIO , KONDO TOSHIRO
IPC分类号： A61B8/14 , G01N29/22 , G01N29/44
摘要： PURPOSE:To provide a means to extract and draw the data following the transmitting attenuation in an organism by providing an image forming method reflecting the form of the frequency spectrum of an ultrasonic reflected signal from the organism. CONSTITUTION:A received signal is divided into different bands by plural band filter groups (20a to 20c), and strength signals detected by wave detectors (22a to 22c) are weighting added or hue added, so as to display in an image. As a result, the received signal is not handled in all the band, but compression detected at each divided band, and then weighting added, and thereby, the attenuation data following the ultrasonic wave transmission in the linving body of a patient is added to a conventional tomographic image, and the visibility of a minute difference of contrast can be improved broadly. Consequently, not only the diseased part and the healthy composition around the diseased part can be recognized easily, but also species generated by the interference between waves can be reduced effectively, and the contrast resolution can be improved.

64. 发明专利

JPH06225878A ULTRASONIC DOPPLER DIAGNOSTIC DEVICE 失效
公开(公告)号：JPH06225878A
公开(公告)日：1994-08-16
申请号：JP1656693
申请日：1993-02-03
申请人： HITACHI MEDICAL CORP
发明人： IZUMI MIKIO , KANDA HIROSHI
IPC分类号： A61B8/06 , G01P5/00
摘要： PURPOSE:To provide an ultrasonic Doppler diagnostic device having a good detecting capability over a wide region from a shallow section to a deep section. CONSTITUTION:Frequencies of reference waves 103, 104 used for making the echo signal complex are made variable in response to the Doppler sampling depth information 109. The variable-frequency complex reference waves 103, 104 are generated by a reference wave generator 12. The reference wave generator 12 changes the frequency division of a frequency dividing counter with a conversion table ROM converting the sampling depth information 109 into the reference wave frequency information (frequency division information) and generates the variable-frequency complex reference waves 103, 104 in response to the sample depth. A good detecting capability of the Doppler signal is obtained over a wide range from a shallow section to a deep section.

65. 发明专利

JPH03289945A ULTRASONIC DIAGNOSTIC DEVICE 失效
公开(公告)号：JPH03289945A
公开(公告)日：1991-12-19
申请号：JP9106290
申请日：1990-04-04
申请人： HITACHI MEDICAL CORP
发明人： IZUMI MIKIO , SATO YUTAKA
IPC分类号： G01N29/22 , A61B8/00 , G01N29/24
摘要： PURPOSE:To select a probe and a device body without any error and to control the whole of a device by arranging detectors to detect a corresponding probe to respective probes, and controlling the device body according to a kind of the corresponding probe by means of an output from the detector. CONSTITUTION:In a device, a grasped probe is moved by producing acceleration according to movement of the hand of a diagnostician when the diagnostician diagnoses by grasping one of ultrasonic probes 1a, 1b, and 1c in hand. The ultrasonic probe where acceleration occurs is provided at a position where acceleration is produced with an acceleration sensor 10. An output from the acceleration sensor 10 is transmitted and inputted to a probe detecting part 6 in a device body through a signal line 20a and a connector 12. Thus, the detecting part 6 decides that which of the ultrasonic probes 1a, 1b, and 1c is selected, and a signal responding to the decision is outputted to a control part 7. In which case, the device body accurately detects the probe intended to be used by the diagnostician, and the device is worked according to the selected probe.

66. 发明专利

JPH03254739A ULTRASONIC CONTACTOR 失效
公开(公告)号：JPH03254739A
公开(公告)日：1991-11-13
申请号：JP5475290
申请日：1990-03-05
申请人： HITACHI MEDICAL CORP
发明人： ISHIKAWA YASUO , IZUMI MIKIO , KIMURA TOMOATSU
IPC分类号： G01N29/24 , A61B8/06
摘要： PURPOSE:To obtain a blood flow speed image on the basis of the blood flow speed by forming an interposed layer between a vibrator element and a backing member and reducing the sound impedance of the interposed layer smaller than that of the backing member and setting the thickness of the layer to 1/4 of the wave length of the generated supersonic wave. CONSTITUTION:The back surface of a piezoelectric element 1 is supported by a backing member 2, and the base board of the piezoelectric element 1 is formed, and the supersonic wave supplied from the back surface of the piezoelectric element 1 is prevented from returning to the piezoelectric element surface again. Further, an interposed layer 3 is installed between the piezoelectric element 1 and the backing member 2, and the sound impedance is reduced to be smaller than that of the backing member 2, and the thickness of the interposed layer 3 is allowed to correspond to 1/4 of the wave length of the supersonic wave generated from the piezoelectric element 1. Accordingly, the phase difference of half the wave length of the supersonic wave is generated between the supersonic wave supplied from the back surface of the piezoelectric element 1 and the reflection wave reflected in the boundary part between the interposed layer 3 and the backing member 2. Thus, the synchronization with the supersonic wave generated by the piezoelectric element 1 itself is realized, and the ultrasonic wave vibration having the long duration time is obtained, and the blood flow speed can be measured correctly, and a blood flow speed image is obtained on the basis of the measurement.

67. 发明专利

JPH03165700A MANUFACTURE OF ULTRASONIC PROBE 失效
公开(公告)号：JPH03165700A
公开(公告)日：1991-07-17
申请号：JP30592789
申请日：1989-11-24
申请人： HITACHI MEDICAL CORP
发明人： MIZUGUCHI SATORU , TANPO MAKOTO , IZUMI MIKIO
IPC分类号： G01N29/24 , H04R17/00
摘要： PURPOSE:To shorten time for manufacturing an ultrasonic probe by producing a sheet-shaped sound matching layer member and adhering it onto the main surface of a vibrator group by an adhesive when a vibrator is worked. CONSTITUTION:When an ultrasonic vibrator 11 is worked to a prescribed dimension, a sound matching member is worked to the 1/4 odd-number times thickness of a wavelength for a frequency to be used and a sheet-shaped sound matching layer member 13 is formed. On the upper surface of a supporting stand composed of an ultrasonic sound absorbing material, the ultrasonic vibrators 11 are arranged in the shape of an array so as to form the vibrator group, and on the main surface of the vibrator group, the sheet-shaped sound matching layer member 13 is adhered by the adhesive, Then, lead wires are connected to the respective ultrasonic vibrators. Thus, the time can be shortened for manufacturing the ultrasonic probe and the sound matching layer can be easily provided.

68. 发明专利

JPH0312137A ULTRASONIC TRANSPONDER AND ULTRASONIC DIAGNOSTIC DEVICE 失效
公开(公告)号：JPH0312137A
公开(公告)日：1991-01-21
申请号：JP14533389
申请日：1989-06-09
申请人： HITACHI MEDICAL CORP
发明人： IZUMI MIKIO , SATO YUTAKA
IPC分类号： G01N29/24 , A61B8/00
摘要： PURPOSE:To clearly distinguish the tip part of a stick needle or a catheter, etc., from surrounding internal organs by providing the dead time setter of an amplified signal on a feedback circuit to convert an ultrasonic wave from the probe of an ultrasonic transponder to an electric signal, to amplify the signal and to convert the signal to the ultrasonic wave again. CONSTITUTION:An ultrasonic transponder 10, which is provided on the tip of a stick needle 4, is composed of a vibrator 4a to receive the reflected wave of the ultrasonic wave which is put out from an ultrasonic probe 1 to a reagent 2, amplifier 5 of the signal received by the vibrator and dead time setter 6 to prevent the signal input of the amplified signal from being accepted for fixed time. The transponder is connected and formed so that the output signal of the dead time setter can be applied to the vibrator and the retransmission signal of the vibrator can be inputted to the amplifier 5 again. Thus, stable operation can be executed and the ultrasonic echo of enough intensity is retransmitted from the vibrator to the probe. Then, on a monitor in the main body of an ultrasonic diagnostic device, the image of the tip part of the stick needle can be clearly distinguished from the surrounding internal organs together with an ultrasonic tomographic image.

69. 发明专利

JPH01285250A ULTRASONIC PROBE FOR INTERNAL EXAMINATION 失效
公开(公告)号：JPH01285250A
公开(公告)日：1989-11-16
申请号：JP11605988
申请日：1988-05-12
申请人： HITACHI MEDICAL CORP
发明人： IZUMI MIKIO , SATO YUTAKA
IPC分类号： A61B8/12 , G01N29/04 , G01N29/24
摘要： PURPOSE:To perform transvaginal scanning by the way of an internal examination, by providing an operating projection to the surface of a housing on the side opposite to the ultrasonic wave transmitting-receiving surface thereof. CONSTITUTION:For example, a housing 1 has a scanning angle 16 of about 40 deg. and protects a vibrator 2 and supports a cable 5. An operating projection 1a is provided to the housing 1 and has function for receiving the force from the fingertip of an examiner. When the operating projection 1a provided to an ultrasonic probe 10 for an internal examination is pushed by the finger of the examiner (internal examination person) 11, the action of force shown by a code 12 is generated in the ultrasonic probe 10 for the internal examination and the force synthesized upon the reception of the reaction 13 of the force from the part of the fornix vaginae generates moment 4 of rotation and the ultrasonic probe 10 for the internal examination is turned toward an objective organ so as to allow said organ (e.g., uterus) 15 to enter the scanning angle 16.

70. 发明公开

EP2215968A4 ULTRASONIC PROBE AND ULTRASONIC IMAGING APPARATUS 审中-公开
标题翻译： ULTRASCHALLSONDE UND ULTRASCHALLBILDGEBUNGSVORRICHTUNG
公开(公告)号：EP2215968A4
公开(公告)日：2017-08-02
申请号：EP08853268
申请日：2008-11-25
申请人： HITACHI LTD
发明人： HASHIBA KUNIO , IZUMI MIKIO , ASAFUSA KATSUNORI
IPC分类号： A61B8/00 , H04R19/00
CPC分类号： B06B1/0292

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