Flow cell apparatus
    3.
    发明授权
    Flow cell apparatus 失效
    流通池装置

    公开(公告)号:US5690895A

    公开(公告)日:1997-11-25

    申请号:US761143

    申请日:1996-12-06

    摘要: A flow cell apparatus, useful in an apparatus for measuring particles suspended in a liquid, comprises a sample liquid, supply device, a sheath liquid supply device, a flow cell which has a flow passage passing through a transparent measuring portion, and a nozzle for causing the sample liquid, from the supply device to flow in the flow passage of the flow cell. The nozzle has at least one discharge port which is disposed in the flow passage in a spaced relation from the inner wall of the flow cell flow passage. The sheath liquid supply device causes the sheath liquid to flow around the nozzle discharge port and surround the sample liquid flow to form a sheath flow. The flow passage of the flow cell and the nozzle are so formed as to ensure a sample liquid flow of a fixed width through the measuring portion. A stable sample flow having a fixed width can be formed in the measuring portion even when the flow is at a high velocity, and particles in the sample liquid can efficiently be photographed with high accuracy.

    摘要翻译: 一种用于测量悬浮在液体中的颗粒的装置中的流动池装置,包括样品液体,供给装置,皮肤液体供应装置,具有通过透明测量部分的流动通道的流动池,以及用于 使来自供给装置的样品液体流入流动池的流路。 喷嘴具有至少一个排出口,该排出口以与流动池流动通道的内壁隔开的关系设置在流动通道中。 皮肤液体供给装置使皮肤液体在喷嘴排出口周围流动并且围绕样品液体流动形成鞘流。 流动池和喷嘴的流动通道形成为确保通过测量部分具有固定宽度的样品液体流动。 即使在流速高的情况下,也可以在测量部分形成具有固定宽度的稳定的样品流,并且可以高精度地有效地拍摄样品液体中的颗粒。

    Apparatus for investigating particles in a fluid, and a method of
operation thereof
    4.
    发明授权
    Apparatus for investigating particles in a fluid, and a method of operation thereof 失效
    用于调查流体中的颗粒的装置及其操作方法

    公开(公告)号:US5880835A

    公开(公告)日:1999-03-09

    申请号:US703076

    申请日:1996-08-26

    摘要: In order to investigate particles in a fluid, a flow cell causes the fluid to flow past a sensor which receives light from a continuous light emission system. When the sensor detects a change in light, a particle detector is triggered, which in turn triggers a pulse generator and hence an intermittent light emission system. Light then illuminates the flow cell to allow a CCD camera to photograph the particle. The photographs taken by the CCD camera are analyzed by an image processor. In order to obtain an accurate particle concentration measurement, it is necessary to modify the initial concentration measurement derived from the analysis of particle images by the image processor by a compensation coefficient. This operation is carried out by a concentration compensator. The result may then be displayed. Additional analysis may be carried out by changing the magnification of the CCD camera, or by selecting for analysis only those particles of a selected size or type.

    摘要翻译: 为了研究流体中的颗粒,流动池使得流体流过从连续发光系统接收光的传感器。 当传感器检测到光的变化时,触发粒子检测器,这又触发脉冲发生器,因此触发间歇发光系统。 光然后照亮流动池,以允许CCD照相机拍摄颗粒。 由CCD照相机拍摄的照片由图像处理器分析。 为了获得准确的粒子浓度测量,需要通过图像处理器修正由粒子图像的分析得到的初始浓度测量值的补偿系数。 该操作由浓度补偿器进行。 然后可以显示结果。 可以通过改变CCD照相机的放大倍率或通过选择仅分析选定尺寸或类型的那些颗粒来进行附加分析。

    Device for the classification and examination of particles in fluid
    7.
    发明授权
    Device for the classification and examination of particles in fluid 失效
    用于流体中颗粒分级和检查的装置

    公开(公告)号:US5715182A

    公开(公告)日:1998-02-03

    申请号:US286257

    申请日:1994-08-08

    IPC分类号: G01N15/14 G06F19/00

    摘要: A particle image in a sample is formed at an imaging position by an objective lens of a microscope, projected on the image picking up plane of a TV camera via a projection lens and is subjected to photo-electric conversion. Image signals from the TV camera are supplied to an image memory via an A/D converter as well as to an image processing control unit. Image signals outputted from the image memory are supplied to a characteristic picking out unit and there a plurality of characteristics of the particle concerned are picked out. The picked-out characteristics are supplied to the classification unit and there classification of the sediment components is perfumed via a neural network with a learning capability. Accordingly, the classification unit performs provisionally an automatic classification of the objective sediment components by making use of the inputted characteristic parameters. The device allows accurate and fast automatic component particle analysis even for patient specimens containing a variety of components in high concentration.

    摘要翻译: 通过显微镜的物镜在成像位置形成样品中的粒子图像,通过投影透镜投影在电视摄像机的图像拾取面上,并进行光电转换。 来自TV摄像机的图像信号经由A / D转换器以及图像处理控制单元提供给图像存储器。 从图像存储器输出的图像信号被提供给特征选择单元,并且拾取有关粒子的多个特征。 所选择的特征被提供给分类单元,并且通过具有学习能力的神经网络对沉积物成分进行分类。 因此,分类单元通过使用输入的特征参数临时执行目标沉积物成分的自动分类。 该装置允许准确和快速的自动组分颗粒分析,即使对于含有高浓度各种组分的患者标本也是如此。

    Apparatus for automated classification of white blood cells
    8.
    发明授权
    Apparatus for automated classification of white blood cells 失效
    白细胞自动分类装置

    公开(公告)号:US4175859A

    公开(公告)日:1979-11-27

    申请号:US815824

    申请日:1977-07-14

    摘要: An apparatus for automated classification of white blood cells comprising photo-electric converter means whereby the green and blue lights passing through the blood smear are converted into the respective electric signals, a first means for detecting the zone where the nucleus of white blood cell is present at a certain threshold level determined by the maximum and minimum values of the electric signal corresponding to green color, a second means for discriminating between the nucleus of white blood cell obtained from said first means and the granules and cytoplasm of white blood cell at a certain threshold level determined according to said electric signal corresponding to green color, a third means for discriminating between said cytoplasm and the back-ground at the threshold value determined on the basis of said electric signal corresponding to green color and obtained by adding a certain value to the average density on the back-ground, and a fourth means for discriminating between said nucleus and the red blood cells at a certain threshold level determined on the basis of said electric signal corresponding to blue color.

    摘要翻译: 一种用于白细胞自动分类的装置,包括光电转换器装置,由此将穿过血液涂片的绿色和蓝色光转换成相应的电信号,第一种用于检测存在白细胞核的区域的装置 在由与绿色对应的电信号的最大值和最小值确定的某个阈值水平上,第二装置,用于鉴别从所述第一装置获得的白细胞的核与特定的白细胞的颗粒和细胞质 根据对应于绿色的所述电信号确定的阈值电平;第三装置,用于基于所述与绿色相对应的电信号确定的阈值来区分所述细胞质和背景,并通过将特定值加到 背景上的平均密度,以及用于区分的第四装置 所述细胞核和红细胞在基于对应于蓝色的所述电信号确定的某个阈值水平。

    Cell classification method
    9.
    发明授权
    Cell classification method 失效
    细胞分类法

    公开(公告)号:US4129854A

    公开(公告)日:1978-12-12

    申请号:US844312

    申请日:1977-10-21

    IPC分类号: G06K9/00 G01N33/16

    CPC分类号: G06K9/00127

    摘要: A method wherein at least one standard leukocyte is selected from within a blood film in advance, the values of adjustments are calculated on the basis of the differences between a plurality of characteristic parameters evaluated from the standard leukocyte and the corresponding characteristic parameters previously given, and the characteristic parameters of the other leukocytes in the particular blood film are adjusted with these values of adjustments. Further, using the adjusted characteristic parameters, secondary characteristics are derived.

    摘要翻译: 一种预先从血液膜中选择至少一种标准白细胞的方法,基于从标准白细胞评估的多个特征参数与先前给出的相应特征参数之间的差异来计算调整值,以及 利用这些调整值调整特定血液中的其它白细胞的特征参数。 此外,使用经调整的特征参数,导出次要特性。

    Method and apparatus for flow type particle image analysis using a pulse
light emitted at any of an odd and even image field reading-out period
    10.
    发明授权
    Method and apparatus for flow type particle image analysis using a pulse light emitted at any of an odd and even image field reading-out period 失效
    使用在奇数和偶数像场读出周期中的任一个发射的脉冲光的流型粒子图像分析的方法和装置

    公开(公告)号:US5561517A

    公开(公告)日:1996-10-01

    申请号:US303236

    申请日:1994-09-08

    CPC分类号: G01N15/14

    摘要: A method and an apparatus for flow type particle image analysis generate a pulse light emission in any one of the odd and the even field image reading-out periods, and multiple exposure is prevented by prohibiting the next pulse light emission in the predetermined period after the emission. The method includes the steps of flowing a sample liquid in a flow cell, detecting particles passing through the flow cell by a laser beam, making a flash lamp emit light after the predetermined period from the particle detection, picking up a particle still image by a TV camera, and further preventing the multiple exposure by providing emission-prohibiting periods which are established by controlling the timings of flash lamp emission and image transfer with the TV camera, a flash lamp emission control circuit, and an image processing control circuit which are controlled by a central control part.

    摘要翻译: 用于流式粒子图像分析的方法和装置在奇数和偶数场图像读出周期中的任何一个中产生脉冲发光,并且通过在预定时间段之后禁止下一个脉冲发光来防止多次曝光 排放。 该方法包括以下步骤:将流动池中的样品液体流动,通过激光束检测通过流动池的颗粒,使得闪光灯在从颗粒检测起的预定时间后发光,通过一个 通过提供通过控制闪光灯发射和图像传输的定时而建立的禁止发射周期,通过电视摄像机,闪光灯发射控制电路和图像处理控制电路进行控制,从而进一步防止多次曝光 由中央控制部分。