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    Method of measuring the oxygen saturation in pulsating blood flow
    32.
    发明授权
    Method of measuring the oxygen saturation in pulsating blood flow 失效
    测量脉动血流中氧饱和度的方法

    公开(公告)号：US5448991A

    公开(公告)日：1995-09-12

    申请号：US891760

    申请日：1992-06-01

    Applicant: Michael J. R. Polson ,  Gregory L. Morris

    Inventor： Michael J. R. Polson ,  Gregory L. Morris

    IPC: A61B5/00 ,  G01N21/31

    CPC classification number: A61B5/14551 ,  A61B5/7214 ,  G01N21/3151 ,  A61B5/7207 ,  A61B5/7239 ,  G01N2021/3159 ,  G01N2021/3181 ,  G01N2201/1244

    Abstract: An improved pulse oximeter for the measurement of oxygen saturation in the blood, which is faster and more accurate than conventional pulse oximeter. Improved speed and accuracy is attached by elimination of normalization and feedback circuitry and the use of analog to digital converting devices having a wide dynamic range along with a sophisticated computer analysis. The instant invention eliminates inaccuracies resulting from channel matching errors, and detects and eliminates aberrant input data.

    Abstract translation: 一种用于测量血液中氧饱和度的改进的脉搏血氧计，其比常规脉搏血氧计更快更准确。 通过消除规范化和反馈电路以及使用具有宽动态范围的模数转换装置以及复杂的计算机分析来提高速度和精度。 本发明消除了由信道匹配误差引起的不准确性，并且检测和消除异常输入数据。

    METHOD AND APPARATUS FOR DETERMINING CHARACTERISTICS OF A SAMPLE IN THE PRESENCE OF AMBIENT LIGHT
    36.
    发明申请
    METHOD AND APPARATUS FOR DETERMINING CHARACTERISTICS OF A SAMPLE IN THE PRESENCE OF AMBIENT LIGHT 审中-公开
    用于确定环境光下样品特性的方法和装置

    公开(公告)号：WO1997008523A1

    公开(公告)日：1997-03-06

    申请号：PCT/US1996013523

    申请日：1996-08-22

    Applicant: VIVORX PHARMACEUTICALS, INC. ,  SPAULDING, Glenn, F.

    Inventor： VIVORX PHARMACEUTICALS, INC.

    IPC: G01J03/50

    CPC classification number: G01J1/4204 ,  G01J1/44 ,  G01J3/10 ,  G01J3/42 ,  G01J3/4406 ,  G01J3/50 ,  G01J3/501 ,  G01J3/524 ,  G01J2001/4242 ,  G01N2201/1244

    Abstract: A device (20) determines an optical intensity of light emanating from a sample (22) situated under periodically varying ambient light (34). The device (20) includes a selectively illuminating light source (26a, 26b) that can be switched between on and off states that illuminates the sample (22). A detector (36) detects the optical intensities of the sample (22) a first plurality of times with the effects of the illuminating light source (26a, 26b) to produce a plurality of collective light intensity measurements, and a second plurality of times without the effects of the light source (26a, 26b) to produce a plurality of ambient light intensity measurements. A processor quantitatively determines, based upon the multiple collective intensity measurements and the multiple ambient light intensity measurements, the intensity amount of each of the collective light intensity measurements that results from the illuminating source (26a, 26b).

    Abstract translation: 装置（20）确定从位于周期性变化的环境光（34）周围的样品（22）发出的光的光强度。 设备（20）包括可以在照亮样品（22）的开和关状态之间切换的选择性照明光源（26a，26b）。 检测器（36）利用照明光源（26a，26b）的作用第一次多次检测样品（22）的光强度，以产生多个集体光强度测量值，并且第二次多次没有 光源（26a，26b）的作用产生多个环境光强测量。 处理器基于多个集体强度测量和多个环境光强度测量，定量地确定由照明源（26a，26b）产生的每个聚光强度测量的强度量。

    SYSTEM FOR DISABLING OXIMETER IN PRESENCE OF AMBIENT LIGHT
    38.
    发明申请
    SYSTEM FOR DISABLING OXIMETER IN PRESENCE OF AMBIENT LIGHT 审中-公开
    系统灭火器存在的环境光

    公开(公告)号：WO1993006773A2

    公开(公告)日：1993-04-15

    申请号：PCT/US1992008340

    申请日：1992-10-01

    Applicant: MEDTRONIC, INC.

    Inventor： MEDTRONIC, INC. ,  DUFFY, Tim ,  KERNS, Ralph ,  FOGT, Eric ,  KELLEY, James ,  PIERSON, Jeanne, S.

    IPC: A61B05/00

    CPC classification number: A61B5/14535 ,  A61B5/14557 ,  A61B5/1495 ,  A61B2560/0233 ,  G01N21/274 ,  G01N2201/1244 ,  G01N2201/1281

    Abstract: A system (1) for disabling an oximetric device when radiation-carrying channels (10, 12, 14) are exposed to excess ambient radiation is disclosed. It includes a transmitter channel (18) adjacent the sample to be measured, means (54) for isolating the channel from the sample so that it does not carry radiation reflected from or transmitted through the sample, a detector (262) for receiving the transmitted signal, if any, and means for disabling the output in response to the transmitted signal. Preferably, the transmitter channel (18) runs parallel to other transmitter channels (10, 12, 14) in the device, and is isolated from undue ambient light. The system preferably includes means for determining when the second transmitted signal exceeds background noise and the output is disabled when the second transmitted signal exceeds background noise. In general, the sample is a fluid, usually blood, passing through a cuvette (7) adjacent the fiber-optic channels, a cuvette (7) defining an area (52) of radiation absorption adjacent the transmitter channel so that the transmitter does not carry reflected or transmitted radiation from the sample. Also disclosed is a fiber-optic sensor (1) for measuring components of a composition by detecting transmitted or reflected, usually reflected, radiation including such a system, and the cuvette (7) therefor. Finally, a method of disabling the output of an oximetric device (1) when the fiber-optic channels (10, 12, 14) are exposed to undue ambient radiation is disclosed.

    Abstract translation: 公开了一种用于当辐射传送通道（10,12,14）暴露于过量环境辐射时禁用血压计的系统（1）。 它包括与要测量的样本相邻的发射机通道（18），用于隔离通道与样本的装置（54），使得其不携带从样本反射或透射的辐射;检测器（262），用于接收传输的 信号，如果有的话，以及用于响应于所发送的信号禁用输出的装置。 优选地，发射机信道（18）平行于设备中的其他发射机信道（10,12,14）延伸，并且与不适当的环境光隔离。 系统优选地包括用于确定第二发射信号何时超过背景噪声的装置，并且当第二发射信号超过背景噪声时输出被禁用。 通常，样品是通过邻近光纤通道的比色皿（7）的流体（通常为血液），定义与发射器通道相邻的辐射吸收区域（52）的比色皿（7），使得发射器不 携带来自样品的反射或透射辐射。 还公开了一种用于通过检测包括这种系统的透射或反射的，通常被反射的辐射来测量组合物的组分的光纤传感器（1）和用于其的反应杯（7）。 最后，公开了当光纤通道（10,12,14）暴露于不适当的环境辐射时禁用血压计（1）的输出的方法。

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