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    Fetal pulse oximetry sensor
    1.
    发明授权
    Fetal pulse oximetry sensor 有权
    胎儿脉搏血氧饱和度传感器

    公开(公告)号：US06285896B1

    公开(公告)日：2001-09-04

    申请号：US09348767

    申请日：1999-07-07

    申请人： David R. Tobler ,  Mohamed K. Diab ,  Robert J. Kopotic

    发明人： David R. Tobler ,  Mohamed K. Diab ,  Robert J. Kopotic

    IPC分类号： A61B500

    CPC分类号： A61B5/14542 ,  A61B5/1464 ,  A61B5/6839 ,  A61B5/6882 ,  A61B2503/02

    摘要： A sensor provides pulse oximetry measurements from the presenting portion of a fetus. In particular, a spiral probe is designed to attach the sensor to the fetal scalp. In one sensor configuration, a light emitting region of the probe embedded in the scalp in conjunction with a light detector located at the scalp surface measures absorption from a larger volume of the scalp tissue than conventional fetal sensors. In another sensor configuration, light emitting and light collecting regions of the probe embedded in the scalp are angled with respect to the scalp surface to measure absorption from a larger volume and deeper layers of the scalp tissue than conventional fetal sensors. These sensors increase the likelihood of measuring blood volume changes occurring in larger arterioles versus smaller arterioles or capillaries, yielding a representative measurement of central arterial oxygen saturation. These sensors also reduce the calibration errors caused by a low blood fraction. Localized arteriolar flow is stimulated with heat or vasodilating substances to reduce the effects of localized oxygen consumption and to increase blood fraction. A three-wavelength sensor is utilized to detect a low blood fraction condition.

    摘要翻译： 传感器从胎儿的呈现部分提供脉搏血氧饱和度测量。 特别地，螺旋探针被设计成将传感器附接到胎儿头皮。 在一个传感器配置中，与常规胎儿传感器相比，头皮中嵌入在头皮中的探针的发光区域与位于头皮表面处的光检测器的发光区域测量来自较大体积的头皮组织的吸收。 在另一种传感器配置中，嵌入在头皮中的探针的发光和聚光区域相对于头皮表面成角度，以测量比常规胎儿传感器更大体积和更深层的头皮组织的吸收。 这些传感器增加了测量较大小动脉相对于较小的小动脉或毛细血管发生的血容量变化的可能性，产生中心动脉血氧饱和度的代表性测量。 这些传感器还减少了由低血液分数引起的校准误差。 用热或血管扩张物质刺激局部小动脉血流，以减少局部氧气消耗的影响并增加血液成分。 三波长传感器用于检测低血液分数状况。

    Pulse and active pulse spectraphotometry
    4.
    发明授权
    Pulse and active pulse spectraphotometry 有权
    脉冲和有源脉冲分光光度法

    公开(公告)号：US08606342B2

    公开(公告)日：2013-12-10

    申请号：US11263404

    申请日：2005-10-31

    申请人： Mohamed K. Diab

    发明人： Mohamed K. Diab

    IPC分类号： A61B5/1455

    CPC分类号： A61B5/14532 ,  A61B5/0059 ,  A61B5/1455 ,  A61B5/14552 ,  A61B5/6826 ,  A61B5/6838

    摘要： A pulse and active pulse spectraphotometry system comprises a light source adapted to illuminate a tissue site with optical radiation having a plurality of wavelengths selected from at least one of a primary band of about 1620 nm to about 1730 nm and a secondary band of about 1000 nm to about 1380 nm.

    摘要翻译： 脉冲和有源脉冲光谱测量系统包括光源，其适于用具有选自从约1620nm至约1730nm的初级带中的至少一个波长和约1000nm的次频带中的多个波长的光辐射照射组织位置 至约1380nm。