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    • 3. 发明授权
    • Measuring device and method for the determination of particle size
distributions by scattered light measurements
    • 用于通过散射光测量确定粒度分布的测量装置和方法
    • US5438408A
    • 1995-08-01
    • US983559
    • 1993-02-05
    • Reiner WeichertWolfgang Witt
    • Reiner WeichertWolfgang Witt
    • G01N15/02G06T1/00
    • G01N15/0211G01N15/0227
    • For the determination of fine particle size distributions by scattered light measurements, an assembly of suspended particles is illuminated with coherent light, the scattered light pattern is focused on a light sensitive multi-element detector of a registration device and is transformed there to electrical signals. From the digitized electrical signals, the particle size distribution is computed with a computer. For the simplification of the setup and for the improvement of the accuracy of the computable particle size distribution, it is provided that the registration device is a video camera and that the particle size distribution is computed via the solution of a Fredholm integral equation from the signals produced by the light intensities at the pixels of the video camera. The video camera is a CCD camera. For the variation of the brightness, a rotating disc with gray filters of different transmittivities is provided in the measuring light beam, or the camera is equipped with an electronic shutter for different exposure times. Different fractions of particle sizes is measured also by variation of the angle between the optical axes of illumination and imaging devices.
    • PCT No.PCT / EP92 / 01276 Sec。 371日期:1993年2月5日 102(e)日期1993年2月5日PCT提交1992年6月5日PCT公布。 第WO92 / 21955号公报 日期为1992年12月10日。为了通过散射光测量确定细粒度分布,用相干光照射悬浮颗粒的组件,散射光图案聚焦在配准装置的光敏多元件检测器上, 在那里被转换成电信号。 从数字化电信号中,使用计算机计算粒度分布。 为了简化设置和提高可计算粒度分布的精度,提供了注册设备是摄像机,并且通过来自信号的Fredholm积分方程的解来计算粒度分布 由摄像机的像素处的光强度产生。 摄像机是CCD摄像机。 对于亮度的变化,在测量光束中提供具有不同透射率的灰度滤光片的旋转盘,或者相机配备有用于不同曝光时间的电子快门。 通过照明和成像装置的光轴之间的角度的变化来测量不同的颗粒尺寸。
    • 4. 发明授权
    • Pivotable needle protector
    • 枢轴保护器
    • US08801672B2
    • 2014-08-12
    • US13318867
    • 2010-05-05
    • Antal NagyZoltan GatiVilmos PerenyiWolfgang WittSandor SzilagyiLaszlo Juhasz
    • Antal NagyZoltan GatiVilmos PerenyiWolfgang WittSandor SzilagyiLaszlo Juhasz
    • A61M5/32
    • A61M5/3216A61M5/3202
    • At the pivotable needle protector (1) according to the invention, the needle (2) is enveloped by a protective tube (3) with a slit on the side and pivotable around a hinge (5), the hinge (5) of the protective tube (3) is connected to an appendix (4) fixed on the part of the needle (2) toward the syringe, in the inside of the protective tube (3) there are valve elements (6) on both sides farthering from the slit (7), functioning as check valve regarding the movement of the needle (2). The solution is characterized by that, before the check valve at least one more valve is formed in the protective tube (3) in direct connection with the needle (2) when moving, preventing only the two-way movement of the needle (2) with the help of one or more flexible valve membranes (8) protruding from the wall of the protective tube (3).
    • 在根据本发明的可枢转针保护器(1)处,针(2)被保护管(3)包围,保护管(3)在侧面具有狭缝并且能够围绕铰链(5)枢转, 管(3)连接到固定在针(2)的一部分上的注射器的附件(4)中,在保护管(3)的内部,在两侧的狭缝 (7),用作关于针(2)的运动的止回阀。 该解决方案的特征在于,在止回阀之前,在移动时与保护管(3)中直接连接的至少一个阀形成至少一个阀,仅防止针(2)的双向运动, 借助于从保护管(3)的壁突出的一个或多个柔性阀膜(8)。
    • 5. 发明授权
    • Apparatus for determination of particle sizes and/or distributions of
particle sizes
    • 用于测定粒度和/或粒度分布的装置
    • US5455675A
    • 1995-10-03
    • US112733
    • 1993-08-26
    • Wolfgang WittWolfgang Maus-FriedrichsStephan Rothele
    • Wolfgang WittWolfgang Maus-FriedrichsStephan Rothele
    • G01N15/02
    • G01N15/0211
    • Apparatus for determination of particle sizes and/or distributions of particle sizes comprises a light source which radiates parallel light of high coherence through a measuring zone (14) in which the particles to be measured are disposed. The light beam diffracted at the particles is imaged by an imaging device (18) onto a photo-detector (20) which is coupled to an evaluating unit (22). The imaging device (18) is provided with several different focal lengths which can be selectably brought into the beam path of the overall device. At the start of a measuring process a control device causes the distribution of particle sizes initially to be determined with the use of the longest focal length and employment of evaluation mathematics valid for this focal length. After the evaluating unit (22) has ascertained that particle size fraction into which the largest measured particles fall, another focal length is, if necessary, brought into the beam path of which the measuring range still just reaches over the largest measured particles. Thereupon the apparatus determines the distribution of particle sizes again with the use of the previously selected focal length and evaluation mathematics matched to this, the distance between the photo-detector (20) and the imaging device (18) being matched to the respective focal length disposed in the beam path. Distributions of particle sizes of unknown samples are thus measured with higher resolution and accuracy.
    • 用于确定粒径和/或粒度分布的装置包括通过其中设置待测量颗粒的测量区(14)辐射高相干的平行光的光源。 在颗粒处衍射的光束被成像装置(18)成像到耦合到评估单元(22)的光检测器(20)上。 成像装置(18)具有若干不同的焦距,其可选择地被带入整个装置的光束路径。 在测量过程开始时,控制装置最初使用最长焦距确定粒子的分布,并使用对该焦距有效的评估数学。 在评估单元(22)确定了最大测量颗粒落入其中的粒度分数之后,如果需要,另一个焦距将进入测量范围仍然超过最大测量颗粒的光束路径。 因此,该装置再次利用先前选择的焦距和与之相匹配的评估数学来确定粒子的分布,光检测器(20)和成像装置(18)之间的距离与各焦距匹配 设置在光束路径中。 因此,以更高的分辨率和精度测量未知样品的粒度分布。
    • 9. 发明申请
    • PIVOTABLE NEEDLE PROTECTOR
    • 可调式针头保护器
    • US20120046616A1
    • 2012-02-23
    • US13318867
    • 2010-05-05
    • Antal NagyZoltan GatiVilmos PerenyiWolfgang WittSandor SzilagyiLaszlo Juhasz
    • Antal NagyZoltan GatiVilmos PerenyiWolfgang WittSandor SzilagyiLaszlo Juhasz
    • A61M5/32
    • A61M5/3216A61M5/3202
    • The subject of the invention is a pivotable needle protector serving as a protector against injuries while using hypodermic needles.At the pivotable needle protector (1) according to the invention, the needle (2) is enveloped by a protective tube (3) with a slit on the side and pivotable around a hinge (5), the hinge (5) of the protective tube (3) is connected to an appendix (4) fixed on the part of the needle (2) toward the syringe, in the inside of the protective tube (3) there are valve elements (6) on both sides farthering from the slit (7), functioning as check valve regarding the movement of the needle (2). The solution is characterized by that, before the check valve at least one more valve is formed in the protective tube (3) in direct connection with the needle (2) when moving, preventing only the two-way movement of the needle (2) with the help of one or more flexible valve membranes (8) protruding from the wall of the protective tube (3).
    • 本发明的主题是在使用皮下注射针时用作防止伤害的保护器的可枢转的针保护器。 在根据本发明的可枢转针保护器(1)处,针(2)被保护管(3)包围,保护管(3)在侧面具有狭缝并且能够围绕铰链(5)枢转, 管(3)连接到固定在针(2)的一部分上的注射器的附件(4)中,在保护管(3)的内部,在两侧的狭缝 (7),用作关于针(2)的运动的止回阀。 该解决方案的特征在于,在止回阀之前,在移动时与保护管(3)中直接连接的至少一个阀形成至少一个阀,仅防止针(2)的双向运动, 借助于从保护管(3)的壁突出的一个或多个柔性阀膜(8)。