Non-invasive psychophysical measurement of glucose using photodynamics
    1.
    发明授权
    Non-invasive psychophysical measurement of glucose using photodynamics 失效
    使用光动力学对葡萄糖进行非侵入性心理物理测量

    公开(公告)号:US06895264B2

    公开(公告)日:2005-05-17

    申请号:US10642111

    申请日:2003-08-15

    IPC分类号: A61B3/06 A61B3/103 A61B5/00

    摘要: Blood glucose concentrations are measured by non-invasive methods and apparatus using visual pigment bleaching in conjunction with psychophysical methodologies. Bleaching light of selected wavelengths is projected through the pupil of the eye of an observer onto the fundus to bleach visual pigments in the eye. The observer's psychophysical response to a visual stimulus is then measured to obtain information regarding the rate of regeneration of the visual pigments. From the rate of pigment regeneration, blood glucose concentrations are measured accurately. The psychophysical methodologies that may be used with the invention include visual acuity tests and color-matching tests.

    摘要翻译: 通过非侵入性方法和装置使用视觉色素漂白与心理物理学方法结合来​​测量血糖浓度。 所选波长的漂白光通过观察者的眼睛的瞳孔投射到眼底上以漂白眼睛中的视觉颜料。 然后测量观察者对视觉刺激物的心理物理反应,以获得关于视觉颜料再生速率的信息。 从色素再生的速度,准确测量血糖浓度。 可用于本发明的心理物理学方法包括视力测试和颜色匹配测试。

    Non-invasive measurement of blood glucose using retinal imaging
    3.
    发明申请
    Non-invasive measurement of blood glucose using retinal imaging 审中-公开
    使用视网膜成像对血糖进行非侵入性测量

    公开(公告)号:US20050267343A1

    公开(公告)日:2005-12-01

    申请号:US11176986

    申请日:2005-07-07

    IPC分类号: A61B3/12 A61B5/00

    摘要: An apparatus carries out measurements of blood glucose in a repeatable, non-invasive manner by measurement of the rate of regeneration of retinal visual pigments, such as cone visual pigments. The rate of regeneration of visual pigments is dependent upon the blood glucose concentration, and by measuring the visual pigment regeneration rate, blood glucose concentration can be accurately determined. This apparatus exposes the retina to light of selected wavelengths in selected distributions and subsequently analyzes the reflection (as color or darkness) from a selected portion of the exposed region of the retina, preferably from the fovea.

    摘要翻译: 设备通过测量视网膜视觉颜料如锥形视觉颜料的再生速率,以可重复的非侵入性方式进行血糖测量。 视觉色素的再生速度取决于血糖浓度,通过测定视觉色素再生率,可以准确测定血糖浓度。 该设备将视网膜暴露于所选择的分布中所选择的波长的光,并随后分析来自视网膜的曝光区域的选定部分(优选为中央凹)的反射(作为颜色或黑暗)。

    Non-invasive measurement of blood glucose using retinal imaging
    5.
    发明申请
    Non-invasive measurement of blood glucose using retinal imaging 审中-公开
    使用视网膜成像对血糖进行非侵入性测量

    公开(公告)号:US20060020184A1

    公开(公告)日:2006-01-26

    申请号:US11176995

    申请日:2005-07-07

    IPC分类号: A61B5/00

    摘要: An apparatus carries out measurements of blood glucose in a repeatable, non-invasive manner by measurement of the rate of regeneration of retinal visual pigments, such as cone visual pigments. The rate of regeneration of visual pigments is dependent upon the blood glucose concentration, and by measuring the visual pigment regeneration rate, blood glucose concentration can be accurately determined. This apparatus exposes the retina to light of selected wavelengths in selected distributions and subsequently analyzes the reflection (as color or darkness) from a selected portion of the exposed region of the retina, preferably from the fovea.

    摘要翻译: 设备通过测量视网膜视觉颜料如锥形视觉颜料的再生速率,以可重复的非侵入性方式进行血糖测量。 视觉色素的再生速度取决于血糖浓度,通过测定视觉色素再生率,可以准确测定血糖浓度。 该设备将视网膜暴露于所选择的分布中所选择的波长的光,并随后分析来自视网膜的曝光区域的选定部分(优选为中央凹)的反射(作为颜色或黑暗)。

    Non-invasive measurement of blood analytes using photodynamics

    公开(公告)号:US06650915B2

    公开(公告)日:2003-11-18

    申请号:US10012902

    申请日:2001-10-22

    IPC分类号: A61B500

    摘要: The determination of blood glucose in an individual is carried out by projecting illuminating light into an eye of the individual to illuminate the retina with the light having wavelengths that are absorbed by rhodopsin and with the intensity of the light varying in a prescribed temporal manner. The light reflected from the retina is detected to provide a signal corresponding to the intensity of the detected light, and the detected light signal is analyzed to determine the changes in form from that of the illuminating light. For a biased sinusoidal illumination, these changes can be expressed in terms of harmonic content of the detected light. The changes in form of the detected light are related to the ability of rhodopsin to absorb light and regenerate, which in turn is related to the concentration of blood glucose, allowing a determination of the relative concentration of blood glucose. Other photoreactive analytes can similarly be determined by projecting time varying illuminating light into the eye, detecting the light reflected from the retina, and analyzing the detected light signal to determine changes in form of the signal due to changes in absorptivity of a photoreactive analyte.

    Non-invasive measurement of blood components using retinal imaging
    8.
    发明授权
    Non-invasive measurement of blood components using retinal imaging 失效
    使用视网膜成像对血液成分进行非侵入性测量

    公开(公告)号:US06477394B2

    公开(公告)日:2002-11-05

    申请号:US09952491

    申请日:2001-09-12

    IPC分类号: A61B500

    摘要: Illuminating light of selected wavelengths in the visible or infrared range is projected through the pupil of the eye onto the fundus, and the light reflected back and out through the pupil is detected and analyzed, preferably using the area of the optic disk for analyzing the retinal vessels overlying the optic disk. Specific wavelengths of illuminating light may be chosen for each blood component to be analyzed depending on the spectral characteristics of the substance being analyzed. The reflected image from the retina may be used to measure non-photoreactive blood components such as hemoglobin, and photoreactive components such as bilirubin. For the measurement of photoreactive components, images may be taken before and after, or during, illumination of the eye with light at wavelengths which will affect the photoreactive analyte, enabling measurements of the concentration of the analyte.

    摘要翻译: 可见光或红外范围内所选波长的照明光通过眼睛的瞳孔投射到眼底,并且通过瞳孔反射回来的光被检测和分析,优选地使用用于分析视网膜的视盘的区域 覆盖视盘的血管。 可以根据被分析物质的光谱特性,为要分析的每个血液成分选择照射光的特定波长。 来自视网膜的反射图像可以用于测量非光反应性血液成分如血红蛋白和光反应性成分如胆红素。 对于光反应性成分的测量,可以在影响光反应性分析物的波长处的光照射之前或之后拍摄图像,从而能够测量分析物的浓度。

    Non-invasive measurement of blood analytes using photodynamics
    9.
    发明授权
    Non-invasive measurement of blood analytes using photodynamics 失效
    使用光动力学对血液分析物进行非侵入性测量

    公开(公告)号:US06889069B2

    公开(公告)日:2005-05-03

    申请号:US10642104

    申请日:2003-08-15

    IPC分类号: A61B3/12 A61B5/00

    摘要: The determination of blood glucose in an individual is carried out by projecting illuminating light into an eye of the individual to illuminate the retina with the light having wavelengths that are absorbed by rhodopsin and with the intensity of the light varying in a prescribed temporal manner. The light reflected from the retina is detected to provide a signal corresponding to the intensity of the detected light, and the detected light signal is analyzed to determine the changes in form from that of the illuminating light. For a biased sinusoidal illumination, these changes can be expressed in terms of harmonic content of the detected light. The changes in form of the detected light are related to the ability of rhodopsin to absorb light and regenerate, which in turn is related to the concentration of blood glucose, allowing a determination of the relative concentration of blood glucose. Other photoreactive analytes can similarly be determined by projecting time varying illuminating light into the eye, detecting the light reflected from the retina, and analyzing the detected light signal to determine changes in form of the signal due to changes in absorptivity of a photoreactive analyte.

    摘要翻译: 个体中的血糖的测定通过将照射光投射到个体的眼睛中来进行,以用具有被视紫红质吸收的波长的光照射视网膜,并且光的强度以规定的时间方式变化。 检测从视网膜反射的光以提供对应于检测到的光的强度的信号,并且分析检测到的光信号以确定形式与照明光的变化。 对于偏置正弦照明,这些变化可以用检测到的光的谐波含量表示。 检测光的形式变化与视紫红质吸收光和再生的能力有关,而这又与血糖浓度有关,从而可以测定血糖的相对浓度。 其他光反应性分析物也可以类似地通过将照射光投射到眼睛中,检测从视网膜反射的光,并分析所检测的光信号来确定由于光反应性分析物的吸收性变化引起的信号形式的变化来确定。

    Non-invasive measurement of blood component using retinal imaging
    10.
    发明授权
    Non-invasive measurement of blood component using retinal imaging 失效
    使用视网膜成像对血液成分进行非侵入性测量

    公开(公告)号:US06305804B1

    公开(公告)日:2001-10-23

    申请号:US09534782

    申请日:2000-03-24

    IPC分类号: A61B310

    摘要: Illuminating light of selected wavelengths in the visible or infrared range is projected through the pupil of the eye onto the fundus, and the light reflected back and out through the pupil is detected and analyzed, preferably using the area of the optic disk for analyzing the retinal vessels overlying the optic disk. Specific wavelengths of illuminating light may be chosen for each blood component to be analyzed depending on the spectral characteristics of the substance being analyzed. The reflected image from the retina may be used to measure non-photoreactive blood components such as hemoglobin, and photoreactive components such as bilirubin. For the measurement of photoreactive components, images may be taken before and after, or during, illumination of the eye with light at wavelengths which will affect the photoreactive analyte, enabling measurements of the concentration of the analyte.

    摘要翻译: 可见光或红外范围内所选波长的照明光通过眼睛的瞳孔投射到眼底,并且通过瞳孔反射回来的光被检测和分析,优选地使用用于分析视网膜的视盘的区域 覆盖视盘的血管。 可以根据被分析物质的光谱特性,为要分析的每个血液成分选择照射光的特定波长。 来自视网膜的反射图像可以用于测量非光反应性血液成分如血红蛋白和光反应性成分如胆红素。 对于光反应性成分的测量,可以在影响光反应性分析物的波长处的光照射之前或之后拍摄图像,从而能够测量分析物的浓度。