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    • 1. 发明申请
    • METHOD FOR OBTAINING BLOOD PRESSURE DATA FROM OPTICAL SENSOR
    • 从光传感器获取血压数据的方法
    • WO0185014A3
    • 2002-04-11
    • PCT/US0115167
    • 2001-05-10
    • MOTOROLA INC
    • KHAIR MOHAMMADLOPEZ SALVADORNG RICHARDGHAEM SANJAROLSON WILLIAM
    • A61B5/022A61B5/021A61B5/02
    • A61B5/6843A61B5/02007A61B5/021A61B5/02416A61B5/0261A61B5/681A61B5/7285A61B2562/0233A61B2562/046
    • An optical sensor (12) generates blood pressure data by obtaining two dimensional images of the surface of the patient's body, such as in the vicinity of the radial artery in the wrist area. Blood flow in the patient causes light to be reflected off a flexible reflective surface (14) applied against the patient with a hold down pressure, and the scattering of light is sensed with a two-dimensional array (17) of photo-detectors (18). The output of the photo-detectors during systolic and diastolic events is calibrated against known blood pressure measurements taken with a conventional air-cuff sphygmomanometer. Linear calibration relationships between output signal and blood pressure (FIG. 25) are obtained during calibration for some set of the photo-detectors. When blood pressure data is obtained from the patient, the linear calibration relationship between output signals and blood pressure is applied to the output signals from the set of photo-detectors, resulting in blood pressure data. The method provides for compensation for changes in hold down pressure and translation or rotation of the optical sensor relative to the patient. A preferred optical sensor arrangement for use in performing the method is also described.
    • 光学传感器(12)通过获得患者身体的表面的二维图像来产生血压数据,例如在手腕区域的桡动脉附近。 患者的血液流动使得光被从按压压力施加到患者上的柔性反射表面(14)反射,并且用二维阵列(17)的光检测器(18)感测光的散射 )。 收缩期和舒张期事件期间光电探测器的输出是用常规气袖血压计测量的已知血压进行校准。 输出信号与血压之间的线性校准关系(图25)在某些光电检测器的校准过程中获得。 当从患者获得血压数据时,输出信号和血压之间的线性校准关系被施加到来自该组光电检测器的输出信号,从而产生血压数据。 该方法提供补偿压力压力和光学传感器相对于患者的平移或旋转的变化。 还描述了用于执行该方法的优选光学传感器装置。
    • 4. 发明专利
    • Optical noninvasive blood pressure sensor and method
    • AU768355B2
    • 2003-12-11
    • AU6305101
    • 2001-05-10
    • MOTOROLA INC
    • KHAIR MOHAMMADLOPEZ SALVADORNG RICHARDGHAEM SANJAROLSON WILLIAM
    • A61B5/00A61B5/021A61B5/022A61B5/024A61B5/02
    • A blood pressure sensor includes a source of photo-radiation, such as an array of laser diodes. The sensor also includes a two-dimensional, flexible reflective surface. The reflective surface is nominally positioned relative to the radiation source such that the radiation travels in a direction normal to the reflective surface. The reflective surface is placed adjacent to the location on the patient where the blood pressure data is to be acquired. Radiation from the source is reflected off of the reflective surface onto a two-dimensional array of photo-detectors. Systolic and diastolic blood pressure fluctuations in the patient are translated into deflections of the patient's skin. These deflections cause corresponding deflections in the two dimensional reflective surface. The associated movement of said flexible reflective surface due to blood pulsation causes scattering patterns from said reflective surface to be detected by the two dimensional array of photo-detectors. The output from the array of photo-detectors is calibrated to blood pressure in mmHg during a calibration procedure to obtain a set of calibration relationships for one or more of the individual detectors. The calibration relationship are then used during acquisition of blood pressure data to arrive at blood pressure data.
    • 8. 发明专利
    • Improved rf tagging system with multiple decoding modalities
    • AU6907694A
    • 1994-12-20
    • AU6907694
    • 1994-05-09
    • MOTOROLA INC
    • LAURO GEORGE LGHAEM SANJARISTVAN RUDYARD L
    • G08B13/24G08B13/14G08B26/00G06F7/04
    • An RF tagging system includes an RF tag (10, 30) and an RF tag reader 80. The RF tag includes a plurality of RF resonant circuits. Each RF resonant circuit is resonant at a given RF frequency. A group of decoder RF resonant circuits (12, 32) have resonant frequencies defining one of a plurality of predetermined decoding modalities. A group of data RF resonant circuits (14, 34) have resonant frequencies corresponding to a predetermined identification code when the resonant frequencies of the data RF resonant circuits are decoded in accordance with the one decoding modality. The RF tag reader detects the resonant frequencies of the decoder RF resonant circuits and determines the one decoding modality. The RF tag reader is operative in each of the plurality of predetermined decoding modalities, detects the resonant frequencies of the group of data RF resonant circuits, and decodes the resonant frequencies of the group of data RF resonant circuits in accordance with the one decoding modality to provide the identification code. The decoder RF resonant circuits may also indicate the number of data RF resonant circuits on the RF tag. The RF tag reader determines the predetermined number from the decoder RF resonant circuits to confirm the accurate detection of the data RF resonant circuits. The RF tag reader, when selecting a decoding modality in accordance with the detected resonant frequencies of the decoder RF resonant circuits, determines various frequency bands and alters the RF tag reader frequency detection operation for accurate detection of the data RF resonant circuits.