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    • 2. 发明授权
    • High resolution biosensor for in-situ microthermometry
    • 高分辨率生物传感器用于原位微量测定
    • US5631141A
    • 1997-05-20
    • US435354
    • 1995-05-05
    • Gregory J. SonekYagang LiuBruce J. TrombergMichael W. Berns
    • Gregory J. SonekYagang LiuBruce J. TrombergMichael W. Berns
    • G01N31/22C12Q1/02
    • G01N31/229Y10S435/968
    • The present invention comprises a method for use of a biosensor for in-situ microthermometry. This biosensor is a substantially spherical vesicle impregnated with a dopant which varies its optical emission spectrum as a function of the local environmental temperature of the biosensor in the temperature range to be observed. In the preferred embodiment of the present invention, this dopant is the fluorescent dye 6-dodecanoyl-2-dimethylamino-naphthalene (Laurdan.TM.). This method for in-situ measurement of temperature in a biological system uses such a vesicle by introduction of the vesicle into the biological system to be measured and manipulation of the vesicle to the location where temperature is to be measured. The temperature is then calculated from the optically measured generalized polarization at that location and the known relationship between temperature and generalized polarization for the membrane of the vesicle.
    • 本发明包括使用生物传感器进行原位微量测定的方法。 该生物传感器是浸渍有掺杂剂的基本上球形的囊泡,其在要观察的温度范围内改变其作为生物传感器的局部环境温度的函数的光发射光谱。 在本发明的优选实施方案中,该掺杂剂是荧光染料6-十二酰基-2-二甲基氨基 - 萘(Laurdan TM)。 用于生物系统中温度原位测量的方法通过将囊泡引入要测量的生物系统中并将囊泡操作到要测量温度的位置来使用这种囊泡。 然后从该位置处的光学测量的广义极化计算温度,以及温度和囊泡膜的广义极化之间的已知关系。
    • 4. 发明授权
    • Diffuse optics illuminator for reflectance microscopy and method of providing diffuse light for reflectance microscopy
    • 用于反射显微镜的漫射光学照明器和用于反射显微镜的漫射光的方法
    • US06661574B2
    • 2003-12-09
    • US10126141
    • 2002-04-19
    • Tatiana B. KrasievaAlexander S. DvornikovBruce J. TrombergMichael W. Berns
    • Tatiana B. KrasievaAlexander S. DvornikovBruce J. TrombergMichael W. Berns
    • G02B2106
    • G02B21/125
    • An illuminator and a reflectance microscope or system utilizing the illuminator for eliminating the need of a special light source, a reflected light vertical illuminator, and condenser lenses. The system may utilize an ordinary light source. The illuminator includes embedded chromophoric and diffusion properties. The illuminator further has a size and a shape to enable proximate positioning relative to the specimen to be observed. The illuminator further has an opening or aperture through which the specimen may be viewed. As such, the opening of the illuminator permits placement of the illuminator between the objective lens and the specimen. This positioning enables reflectance type or dark field microscopy with a simple and durable illuminator without complex optics. A method of using the reflectance microscope includes illuminating a specimen by the illuminator on a same side of the specimen as is the objective lens relative to a plane of the specimen normal to the optical path.
    • 使用照明器的照明器和反射显微镜或系统,用于消除对特殊光源,反射光垂直照明器和聚光透镜的需要。 该系统可以利用普通的光源。 照明器包括嵌入式发色和扩散特性。 照明器还具有尺寸和形状,以使得能够相对于要观察的样本的邻近定位。 照明器还具有可以观察样本的开口或孔。 因此,照明器的开口允许照明器在物镜和样本之间放置。 这种定位使得反射型或暗视野显微镜具有简单耐用的照明器,无需复杂的光学元件。 使用反射型显微镜的方法包括:在与所述物镜相同的样本的与所述光路的垂直方向的平面相同的侧面照射所述样本。
    • 6. 发明授权
    • Method and apparatus for detecting enzymatic activity using molecules that change electrophoretic mobility
    • 使用改变电泳迁移率的分子检测酶活性的方法和装置
    • US07157223B2
    • 2007-01-02
    • US09945396
    • 2001-08-30
    • Nancy AllbrittonChristopher SimsMichael W. BernsGavin D. MeredithTatiana B. KrasievaBruce J. TrombergChao L. Lee
    • Nancy AllbrittonChristopher SimsMichael W. BernsGavin D. MeredithTatiana B. KrasievaBruce J. TrombergChao L. Lee
    • C12Q1/00
    • C12M41/46C12M35/02C12M47/06C12Q1/00C12Q1/485G01N27/44721G01N27/44743G01N33/50G01N33/5017
    • The activity of intracellular chemical reactions of molecules is measured by the use of fluorescently labeled substrate molecules that undergo a change in electrophoretic mobility upon chemical reaction such as that catalyzed by an enzyme. Specificity is achieved by using labeled substrate molecules that can be acted upon only by specific enzymes. Thus the activity of a specific enzyme or class of enzymes can be determined. Measurements are made with the intracellular presence of such substrate molecules, at some time of interest, typically after exposure of the cell to a stimulus that activates a particular enzymatic pathway. To ensure accuracy, measurements must be made in a timely manner so as to minimize chemical reactions occurring subsequent to the time of interest. Fast controllable laser lysis is used to obtain the contents of a single cell into which reporter substrate molecules have been introduced. The cell contents are then subjected to capillary electrophoresis and enzymatic activity is determined by comparing amounts of substrate molecules to amounts of enzymatically altered substrate molecules which are separated by the electrophoresis and identified by the presence of a fluorescent label.
    • 通过使用荧光标记的底物分子来测量分子的细胞内化学反应的活性,所述底物分子在诸如由酶催化的化学反应时经历电泳迁移率的变化。 通过使用只能被特定酶作用的标记底物分子来实现特异性。 因此,可以确定特异性酶或酶类的活性。 通常在感兴趣的某个时间通常在将细胞暴露于激活特定酶促途径的刺激之后,通过细胞内存在这样的底物分子进行测量。 为了确保准确性,必须及时进行测量,以最大限度地减少感兴趣的时间后发生的化学反应。 使用快速可控的激光裂解来获得引入了报告基质分子的单细胞的含量。 然后对细胞内容物进行毛细管电泳,并通过将底物分子的量与通过电泳分离并通过荧光标记的存在鉴定的酶促改变的底物分子的量进行比较来确定酶活性。
    • 7. 发明授权
    • Method of laser photoablation of lenticular tissue for the correction of vision problems
    • 用于矫正视力问题的透镜组织的激光光切割方法
    • US06322556B1
    • 2001-11-27
    • US08103089
    • 1993-08-06
    • Arlene E. GwonMichael W. Berns
    • Arlene E. GwonMichael W. Berns
    • A61F9008
    • A61F9/008A61F9/00736A61F9/00802A61F2009/00853A61F2009/0087A61F2009/00887A61F2009/00895
    • A method for the laser photoablation of ocular lens tissue comprises the steps of determining a volume of the lens tissue to be photoablated and directing a pulsed, infrared laser beam at the volume with an amount of energy effective for photoablating the determined region without causing substantial damage to surrounding tissue regions. The laser beam is initially directed at a focal point below an anterior surface of the ocular lens and such focal point is moved towards the ocular lens anterior surface in order to ablate the determined volume. The laser is preferably an Nd:YLF laser operating at a frequency of about 1053 nanometers and a pulse repetition rate of about 1000 Hertz with a pulse width of about 60 picoseconds. Each pulse has an energy of about 30 microjoules. The laser operates with a focused beam diameter of about 20 microns and operates with a “zone of effect” of no greater than about 50 microns. The method provides for the correction of myopia, hyperopia or presbyopia and enables the removal of incipient cataract.
    • 用于眼透镜组织的激光光切割的方法包括以下步骤:确定要光照的透镜组织的体积,并以一定量的能量对脉冲的红外激光束进行照射,以有效地对确定的区域进行照相,而不会造成实质的损伤 到周围的组织区域。 激光束最初被引导到眼透镜的前表面下方的焦点处,并且这样的焦点朝向眼透镜前表面移动以便消融确定的体积。 该激光器优选为以约1053纳米的频率工作的Nd:YLF激光器,脉冲重复率约为1000赫兹,脉冲宽度约为60皮秒。 每个脉冲具有约30微焦耳的能量。 激光器以约20微米的聚焦光束直径进行操作,并以不大于约50微米的“效应区域”操作。 该方法提供矫正近视,远视或老花眼,并能够去除早期白内障。
    • 10. 发明授权
    • Method and apparatus for optogenetic treatment of blindness including retinitis pigmentosa
    • 视网膜色素变性眼病的治疗方法及装置
    • US09089698B2
    • 2015-07-28
    • US12760520
    • 2010-04-14
    • Samarenda K. MohantyMatthew FicinskiEdward K. WongMichael W. Berns
    • Samarenda K. MohantyMatthew FicinskiEdward K. WongMichael W. Berns
    • A61N1/32A61N1/04A61F9/00A61K9/00A61K38/17
    • A61N1/327A61F9/0017A61K9/0048A61K38/177A61N1/0412A61N1/0416
    • An apparatus for in vivo electroporating a plasmid into a retina of any eye includes a first electrode with a first polarity of voltage placed in contact with a cornea of the eye, a second electrode with an opposite second voltage at least in part behind the retina, and a pulsed voltage source for providing a pulsed DC voltage with an optimized field strength amplitude, frequency, number of pulses, group repetition rate and duration of pulse and group repetition, which are optimized for transfection of the channelrhodospsin-2 (ChR2) gene into the retinal ganglion cells. An in vivo method for treating retinal ganglion cells in an eye without use of viral transfection includes the steps of nonviral in vivo delivering a channelrhodospsin-2 (ChR2) gene to target the specific (retinal ganglion) cells of a retina by intravitreous injection of plasmid DNA, electroporating the plasmid into the retina and use of image intensification device for stimulating the retinal ganglion cells with ambient lighting conditions.
    • 用于体内将质粒电穿孔到任何眼睛的视网膜的装置包括具有第一极性电压的第一电极与眼睛的角膜接触,第二电极具有至少部分地在视网膜后方的相反的第二电压, 以及脉冲电压源,用于提供具有优化的场强振幅,频率,脉冲数,组重复率和脉冲和组重复持续时间的脉冲DC电压,其被优化用于将渠道样细胞蛋白酶-2(ChR2)基因转染到 视网膜神经节细胞。 用于在眼睛内治疗视网膜神经节细胞而不使用病毒转染的体内方法包括以下步骤:通过玻璃体内注射质粒,非病毒体内递送通道寡聚胰蛋白胨-2(ChR2)基因靶向视网膜的特定(视网膜神经节)细胞 DNA,将质粒电穿孔到视网膜中,并使用图像增强装置用环境照明条件刺激视网膜神经节细胞。