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    • 81. 发明授权
    • System and method for assessing sleep quality
    • 睡眠质量评估系统和方法
    • US08401626B2
    • 2013-03-19
    • US12570163
    • 2009-09-30
    • Joseph E. MietusChung-Kang PengRobert Joseph ThomasAry L. Goldberger
    • Joseph E. MietusChung-Kang PengRobert Joseph ThomasAry L. Goldberger
    • A61B5/08A61B5/04
    • A61B5/0472A61B5/0205A61B5/021A61B5/0456A61B5/0476A61B5/0496A61B5/0816A61B5/087A61B5/0878A61B5/4812A61B5/4815A61B5/4818A61B5/7257A61B5/7278A61B8/06G16H50/20Y02A90/26
    • An assessment of sleep quality and sleep disordered breathing is determined from cardiopulmonary coupling between two physiological data series. An R-R interval series is derived from an electrocardiogram (ECG) signal. The normal beats from the R-R interval series are extracted to produce a normal-to-normal interval series. The amplitude variations in the QRS complex are used to extract a surrogate respiration signal (i.e., ECG-derived respiration) associated with the NN interval series. The two series are corrected to remove outliers, and resampled. The cross-spectral power and coherence of the two resampled signals are calculated over a plurality of coherence windows. For each coherence window, the product of the coherence and cross-spectral power is used to calculate coherent cross-power. Using the appropriate thresholds for the coherent cross-power, the proportion of sleep spent in CAP, non-CAP, and wake and/or REM are determined. Coherent cross-power can be applied to differentiate obstructive from non-obstructive disease, and admixtures of the same.
    • 通过两个生理数据序列之间的心肺耦合来确定睡眠质量和睡眠呼吸紊乱的评估。 从心电图(ECG)信号导出R-R间期序列。 提取R-R间隔序列的正常搏动以产生正常到正常的间隔序列。 QRS复合体的振幅变化用于提取与NN间隔序列相关联的替代呼吸信号(即ECG导出的呼吸)。 纠正这两个系列以消除异常值,并重新采样。 在多个相干窗口上计算两个重采样信号的交叉光谱功率和相干性。 对于每个相干窗口,使用相干和交叉光谱功率的乘积来计算相干交叉功率。 使用相干交叉功率的适当阈值,确定在CAP,非CAP和唤醒和/或REM中花费的睡眠比例。 相干交叉功能可以应用于区分阻塞性和非阻塞性疾病,以及它们的混合物。
    • 85. 发明申请
    • HAND-HELD DEVICE FOR ELECTRICAL IMPEDANCE MYOGRAPHY
    • 手持式电磁感应装置
    • US20120245436A1
    • 2012-09-27
    • US13391484
    • 2010-08-20
    • Seward B. RutkoveJoel L. Dawson
    • Seward B. RutkoveJoel L. Dawson
    • A61B5/04A61B5/01A61B5/05A61B5/103A61B5/0492A61B8/00A61B5/053A61B5/00
    • A61B5/053A61B5/0536A61B5/0537A61B5/4519A61B5/6843A61B2560/0252A61B2560/0276A61B2562/0209A61B2562/046
    • A device for determining muscle condition of a region of tissue. The device comprises an electrical impedance myography (EIM) portable probe bearing an electrode array. The electrode array comprises excitation electrodes used to apply multi-frequency electrical signals to the region of tissue and pickup electrodes that are used to collect electrical signals resulting from the application of the multi-frequency electrical signals to the region of tissue. To improve accuracy and reproducibility of EIM measurements, the electrode array is reconfigurable to select different subsets of excitation and pickup electrodes so that the electrodes are oriented differently with respect to muscle fibers. Additional devices may be associated with the EIM probe to measure such parameters as temperature, moisture content of the region, quality of contact of electrodes of the electrode array with a surface of the region and pressure with which the EEM probe is applied to the region. The EIM measurements may be adjusted based on these parameters. Also, ultrasound and electrical impedance tomography measurements may supplement the ELM measurements for more complete analysis of the muscle condition.
    • 用于确定组织区域的肌肉状况的装置。 该装置包括具有电极阵列的电阻抗成像(EIM)便携式探针。 电极阵列包括用于将多频电信号施加到组织和拾取电极的区域的激励电极,所述区域用于收集由多频电信号施加到组织区域而产生的电信号。 为了提高EIM测量的精度和再现性,电极阵列是可重构的,以选择激励和拾取电极的不同子集,使得电极相对于肌肉纤维取向不同。 附加装置可以与EIM探针相关联,以测量诸如区域的温度,水分含量,电极阵列的电极与区域表面的接触质量以及将EEM探针施加到该区域的压力等参数。 可以基于这些参数调整EIM测量。 此外,超声和电阻抗层析成像测量可补充ELM测量以更完整地分析肌肉状况。