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公开(公告)号：US20100324406A1
公开(公告)日：2010-12-23
申请号：US12817850
申请日：2010-06-17
申请人： Tetsuyuki Miwa
发明人： Tetsuyuki Miwa
IPC分类号： A61B3/16
摘要： A non-contact ultrasonic tonometer comprises: a ultrasonic transducer that transmits an ultrasonic pulse wave to an examinee's eye and receives the ultrasonic pulse wave reflected from the eye in a non-contact manner; a transmission unit that transmits a drive signal to the ultrasonic transducer to cause the ultrasonic transducer to repeat transmission of the ultrasonic pulse wave K times at a constant interval 1/T in order to transmit a burst wave to the eye, where “T” is a burst frequency and “K” is a burst wave number that is the number of cycles of pulse wave; and an arithmetic unit that determines intraocular pressure (IOP) based on an output signal from the ultrasonic transducer when the ultrasonic transducer receives the burst wave reflected from the eye.
摘要翻译： 非接触型超声波眼压计包括：超声波换能器，其将超声波脉波发射到受检者的眼睛，并以非接触方式接收从眼睛反射的超声脉波; 发送单元，其向超声波换能器发送驱动信号，使得超声波换能器以恒定的间隔1 / T重复发送超声波脉冲波K次，以将突发波发送到眼睛，其中“T”是 突发频率，“K”是脉冲波的周期数的突发波数; 以及算术单元，当超声波换能器接收到从眼睛反射的脉冲波时，基于来自超声波换能器的输出信号来确定眼内压（IOP）。
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公开(公告)号：US07455406B2
公开(公告)日：2008-11-25
申请号：US11905284
申请日：2007-09-28
申请人： Tetsuyuki Miwa , Kazunari Shimizu , Miyuki Ando
发明人： Tetsuyuki Miwa , Kazunari Shimizu , Miyuki Ando
CPC分类号： A61B8/10 , A61B3/1005 , A61B8/463
摘要： To provide an ophthalmic ultrasonic diagnostic apparatus capable of obtaining measurement result with high reliability without lengthy measurement. The apparatus which measures constituent parts of an eye through A-mode includes an ultrasonic probe for A-mode measurement including a transducer emitting an ultrasonic wave into the eye and receiving reflected echoes from tissues of the parts, calculation means for judging whether signals of the echoes are appropriate and calculating measurement values of the parts based on the signals, a memory storing the calculated values, grouping means for setting grouping ranges having predetermined ranges of permissible dispersion with reference to the measurement values and determining that either the grouping range previously set or the grouping range newly set based on the obtained measurement value remains, and central value calculating means counting the numbers of the measurement values falling within the grouping ranges and calculating a central value based on the measurement values.
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公开(公告)号：US20080151188A1
公开(公告)日：2008-06-26
申请号：US12000756
申请日：2007-12-17
申请人： Noriji Kawai , Tetsuyuki Miwa , Kunihiko Otake
发明人： Noriji Kawai , Tetsuyuki Miwa , Kunihiko Otake
CPC分类号： A61B3/1005 , A61B3/1176 , A61B3/18 , A61B8/10 , A61B8/4209 , A61B8/4416
摘要： An eye axial length measurement apparatus comprises: a light source which emits low coherent light; a non-contact eye axial length measurement unit for optically measuring axial length of a patient's eye in non-contact manner in such a way that low coherent light emitted from the light source is split into measuring light and reference light, the measuring light and the reference light are caused to interfere with each other, and the eye axial length is calculated based on a difference in optical path length between the measuring light and the reference light when an interference signal is generated; an ultrasonic eye axial length measurement unit including an ultrasonic probe with a transducer, the unit being placed in a position with a deviation from the non-contact eye axial length measurement unit; an XYZ driving unit including a base, a head support unit attached to the base, and a movable unit which supports the non-contact eye axial length measurement unit and ultrasonic eye axial length measurement unit movably in an X-Y-Z directions with respect to the base; and a determination means which determines whether or not a cloudy portion which is an obstacle to measurement by the non-contact eye axial length measurement unit is present, based on one of a measurement result of the non-contact eye axial length measurement unit and an imaging result of an anterior segment section imaging unit placeable in the non-contact eye axial length measurement unit.
摘要翻译： 眼轴长度测量装置包括：发射低相干光的光源; 非接触式眼轴长度测量单元，用于以非接触方式光学测量患者眼睛的轴向长度，使得从光源发射的低相干光被分成测量光和参考光，测量光和 使参考光彼此干涉，并且当产生干扰信号时，基于测量光和参考光之间的光程长度差计算眼轴长度; 超声波眼轴长度测量单元，包括具有换能器的超声波探头，该单元被放置在偏离非接触眼轴长度测量单元的位置; XYZ驱动单元，包括基座，安装在基座上的头部支撑单元，以及可移动单元，其相对于基座以X-Y-Z方向可移动地支撑非接触眼轴长度测量单元和超声波眼睛轴向长度测量单元; 以及确定装置，其基于非接触眼轴长度测量单元的测量结果和非接触眼轴长度测量单元的测量结果之一来确定是否存在作为非接触式眼轴长度测量单元的测量的障碍物的混浊部分 可以在非接触眼轴长度测量单元中放置的前段段成像单元的成像结果。
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公开(公告)号：US07364298B2
公开(公告)日：2008-04-29
申请号：US11589787
申请日：2006-10-31
IPC分类号： A61B3/10
摘要： An ophthalmic apparatus with which it is easy to open eyelids of an examinee at the time of intraocular pressure measurement has a measurement unit including an measurement part measuring intraocular pressure by blowing fluid to a cornea of an examinee's eye via a nozzle to deform the cornea and a measurement part having a measurement optical system for measuring eye characteristics of the eye, wherein the intraocular pressure measurement part is placed above the eye characteristic measurement part, a device making a selective changeover between an intraocular pressure measurement mode and an eye characteristic measurement mode, and a first movement mechanism part moving the measurement unit in an up-and-down direction with respect to the eye so that a measurement optical axis of either of the measurement parts to be used for the selected mode is positioned at approximately the same height as the examinee's eye.
摘要翻译： 在眼压测量时易于打开受检者眼睑的眼科装置具有测量单元，该测量单元包括测量部件，该测量部件通过经由喷嘴向被检眼的角膜吹送流体以使角膜变形来测量眼内压，并且 测量部件，具有用于测量眼睛的眼睛特性的测量光学系统，其中眼内压测量部分放置在眼睛特征测量部分上方，在眼内压测量模式和眼睛特性测量模式之间进行选择性转换的装置， 以及第一移动机构部件，其相对于眼睛沿上下方向移动测量单元，使得要用于所选模式的任一个测量部件的测量光轴位于与所述眼睛的大致相同的高度 考生的眼睛。
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公开(公告)号：US06602192B2
公开(公告)日：2003-08-05
申请号：US09813171
申请日：2001-03-20
申请人： Tetsuyuki Miwa
发明人： Tetsuyuki Miwa
IPC分类号： A61B505
CPC分类号： A61B3/165
摘要： A noncontact type tonometer monitors the rate of change X(t) in pressure between a standard curve and a measured curve. If X(t) exceeds a value of 1.3, the application of air pressure is stopped to prevent an abnormal rise in pressure. If X(t) is equal to 1, then the measured curve follows the standard curve and correction is not required. If X(t) is not equal to 1, an error condition exists and an amended time t′ is calculated based on the rate of change X(t). Instead of a calculated amended time, an approximated standard curve can also be determined based on either an equation stored in a memory or by matching the measured curve with one of a plurality of standard curves stored in memory.
摘要翻译： 非接触型眼压计监测标准曲线和测量曲线之间的压力变化率X（t）。 如果X（t）超过1.3，则停止施加空气压力，以防止压力异常升高。 如果X（t）等于1，则测量曲线遵循标准曲线，并且不需要校正。 如果X（t）不等于1，则存在错误条件，并且基于变化率X（t）计算修正时间t'。 代替计算的修改时间，也可以基于存储在存储器中的等式或通过将测量曲线与存储在存储器中的多个标准曲线中的一个进行匹配来确定近似标准曲线。
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公开(公告)号：US5841502A
公开(公告)日：1998-11-24
申请号：US982255
申请日：1997-12-01
申请人： Tetsuyuki Miwa
发明人： Tetsuyuki Miwa
CPC分类号： A61B3/152
摘要： An ophthalmic apparatus including measuring device, comprises a moving device for moving the measuring device relatively to the eye, an alignment detecting device for detecting alignment condition between the measuring device and the eye by projecting an alignment target to the eye, then detecting an image of the target, a movement-controlling device for performing alignment by driving and controlling the moving device based on the detected results, a returning device for causing the measuring device to return to a standard position, a returning-instruction device for instructing the returning device to start movement, a returning-control device for controlling movement of the returning device in response to instruction by the returning-instruction device, a risk sensing device for sensing whether there is risk that the apparatus touches the eye caused by movement of the returning device, and a prohibiting device for prohibiting the returning device from moving to all or predetermined directions at the time when the risk sensing device senses that there is risk that the apparatus touches the eye.
摘要翻译： 一种包括测量装置的眼科装置，包括用于相对于眼睛移动测量装置的移动装置，用于通过将对准目标投射到眼睛来检测测量装置和眼睛之间的对准状态的对准检测装置，然后检测图像 目标，通过基于检测结果驱动和控制移动装置来执行对准的移动控制装置，用于使测量装置返回到标准位置的返回装置，用于指示返回装置的返回指示装置 开始运动，用于响应于返回指示装置的指令来控制返回装置的移动的返回控制装置，用于检测是否存在装置与返回装置的移动引起的眼睛接触的风险的风险感测装置， 以及用于禁止返回装置移动到全部或预定的禁止装置 当风险感测装置感测到设备接触眼睛的风险时的方向。
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公开(公告)号：US5532769A
公开(公告)日：1996-07-02
申请号：US406403
申请日：1995-03-20
申请人： Tetsuyuki Miwa , Munehiro Nakao , Nobuo Suzuki , Koki Kato
发明人： Tetsuyuki Miwa , Munehiro Nakao , Nobuo Suzuki , Koki Kato
摘要： An ophthalmologic alignment device for aligning a measuring system at a predetermined position for an eye to be examined. The user moves the measuring system with a joystick for aligning purposes while observing a frontal eye image with an observation unit. A second moving unit further moves the measuring system moved by the user. An index projection/detection system projects an index onto the eye and detects the reflected index. The controller causes drivers to drive the second moving unit on the basis of the result of the detection of the index projection/detection system. A mode switch switches the movement of the measuring system from a mode in which the observation unit is moved by the first moving unit to a mode in which the observation unit is moved by the second moving unit, whereby the alignment of the eye and the measuring system is achieved easily and with high accuracy, irrespective of the degree of the user's skillfulness in handling the alignment device.
摘要翻译： 一种眼科对准装置，用于使待测眼睛的预定位置处的测量系统对准。 用观察单元观察正面眼睛图像时，用户可以用操纵杆移动测量系统进行对准。 第二移动单元进一步移动由用户移动的测量系统。 索引投影/检测系统将指标投射到眼睛上并检测反射指数。 控制器根据检测索引投影/检测系统的结果使驱动器驱动第二移动单元。 模式开关将测量系统的移动从第一移动单元移动观察单元的模式切换到观察单元被第二移动单元移动的模式，由此眼睛的对准和测量 无论用户处理对准装置的熟练程度如何，都能够以高精度实现系统。
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公开(公告)号：US20080079898A1
公开(公告)日：2008-04-03
申请号：US11905284
申请日：2007-09-28
申请人： Tetsuyuki Miwa , Kazunari Shimizu , Miyuki Ando
发明人： Tetsuyuki Miwa , Kazunari Shimizu , Miyuki Ando
IPC分类号： A61B3/12
CPC分类号： A61B8/10 , A61B3/1005 , A61B8/463
摘要： To provide an ophthalmic ultrasonic diagnostic apparatus capable of obtaining measurement result with high reliability without lengthy measurement.The apparatus which measures constituent parts of an eye through A-mode includes an ultrasonic probe for A-mode measurement including a transducer emitting an ultrasonic wave into the eye and receiving reflected echoes from tissues of the parts, calculation means for judging whether signals of the echoes are appropriate and calculating measurement values of the parts based on the signals, a memory storing the calculated values, grouping means for setting grouping ranges having predetermined ranges of permissible dispersion with reference to the measurement values and determining that either the grouping range previously set or the grouping range newly set based on the obtained measurement value remains, and central value calculating means counting the numbers of the measurement values falling within the grouping ranges and calculating a central value based on the measurement values.
摘要翻译： 提供一种能够以高可靠性获得测量结果而无需长时间测量的眼科超声波诊断装置。 通过A模式测量眼睛的组成部分的装置包括用于A模式测量的超声波探头，包括将超声波发射到眼睛中并从部件的组织接收反射回波的计算装置，用于判断是否 回波是适当的，并且基于信号计算部件的测量值，存储计算值的存储器，参考测量值设置具有预定允许色散范围的分组范围的分组装置，并且确定先前设置的分组范围或 基于获得的测量值重新设置的分组范围保留，并且中心值计算装置对落在分组范围内的测量值的数量进行计数，并基于测量值计算中心值。
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公开(公告)号：US07101335B2
公开(公告)日：2006-09-05
申请号：US10055944
申请日：2002-01-28
申请人： Tetsuyuki Miwa , Hiroyuki Tashiro
发明人： Tetsuyuki Miwa , Hiroyuki Tashiro
IPC分类号： A61B3/16
CPC分类号： A61B3/16
摘要： A non-contact type tonometer includes a fluid blowing device which blows fluid against a cornea of an eye of an examinee; an intraocular pressure measurement part which detects a deformed state of the cornea caused by the blown fluid and determines intraocular pressure of the examinee's eye based on a result of detection of the deformed state; a pulsation detection part which detects pulsation of the examinee; a measurement timing determination part which can determine a measurement timing based on the detected pulsation to obtain a predetermined number of results of measurement on the intraocular pressure in synchronization with different phase points in the pulsation; a command signal input part which inputs a command signal for execution of the measurement; and a control part which outputs a control signal for controlling driving of the fluid blowing device based on the determined measurement timing and the input command signal.
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公开(公告)号：US08500638B2
公开(公告)日：2013-08-06
申请号：US12659617
申请日：2010-03-15
申请人： Masayuki Jinde , Tetsuyuki Miwa , Kenichiro Makino
发明人： Masayuki Jinde , Tetsuyuki Miwa , Kenichiro Makino
IPC分类号： A61B5/00
CPC分类号： A61B3/165
摘要： A non-contact ultrasonic tonometer for measuring an intraocular pressure of an examinee's eye in non-contact manner by use of an ultrasonic wave, comprises: an ultrasonic transducer including a transmitter which emits an ultrasonic transmission pulse wave to the eye and a receiver which detects an ultrasonic reflection pulse wave from the eye, the transducer being arranged to be placed in a position apart from the eye and to transmit and receive the pulse wave with respect to the eye through the medium of air; and a calculation part being arranged to obtain a peak amplitude level of the reflection pulse wave based on an output signal from the ultrasonic transducer and measure the intraocular pressure based on the obtained peak amplitude level.
摘要翻译： 一种用于通过使用超声波以非接触方式测量被检眼的眼内压的非接触型超声波眼压计包括：包括向眼睛发射超声波发射脉波的发射器的超声波换能器和检测眼睛的接收器 来自眼睛的超声波反射脉冲波，所述换能器被布置成放置在离开眼睛的位置并且通过空气介质相对于眼睛发射和接收脉搏波; 以及计算部，其被配置为基于来自超声换能器的输出信号获得反射脉波的峰值振幅电平，并且基于获得的峰值振幅电平来测量眼内压。
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