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    Method and apparatus for multi-spectral analysis in noninvasive infrared spectroscopy
    92.
    发明公开
    Method and apparatus for multi-spectral analysis in noninvasive infrared spectroscopy 失效
    Verfahren und Vorrichtung zur multispektralen分析bei der nichtinvasiven Infrarot-Spektroskopie

    公开(公告)号：EP1324018A2

    公开(公告)日：2003-07-02

    申请号：EP03006289.7

    申请日：1997-01-31

    申请人： Sensys Medical, Inc.

    发明人： Malin, Stephen F. ,  Khalil, Gamal

    IPC分类号： G01N21/35 ,  G01N21/31 ,  A61B5/00

    CPC分类号： A61B5/1455 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/725 ,  A61B5/7253 ,  G01N21/314 ,  G01N21/359

    摘要： An apparatus for determining the concentration of an organic blood analyte in a body tissue sample, comprising:

    (a) means for irradiating the sample with incident radiation containing a plurality of distinct, nonoverlapping spectral regions, all of said regions within a wavelength range of 1100 and 5000 nanometers within a beam path;
    (b) means for collecting reflected radiation emerging from the sample and directing said reflecting radiation along the beam path;
    (c) diffraction grating means disposed in the beam path for receiving reflected radiation emerging from the sample;
    (d) a linear detector array for receiving the passed wavelengths emerging from the diffraction grating means;
    (e) means for converting the detected wavelengths into a signal representative of the intensity of said wavelengths; and
    (f) means for correlating said signal representative of the intensity of said wavelengths to determine the concentration of the analyte and for measuring the intensity of radiation from said body tissue sample in the near-IR absorption spectrum, especially for water, for at least one of:

    to provide a reference to detect inaccurate measurements; and
    to identify ineffective measurements arising from a failure to obtain a proper instrumentation scan of the tissue sample.

    摘要翻译： 一种用于确定身体组织样本中的有机血液分析物的浓度的装置，包括：（a）用于对包含多个不同的不重叠的光谱区域的入射辐射照射样品的装置，所有这些区域在1100的波长范围内 和5000纳米的光束路径; （b）用于收集从样品出射的反射辐射并沿着光束路径引导所述反射辐射的装置; （c）设置在光束路径中用于接收从样品出射的反射辐射的衍射光栅装置; （d）线性检测器阵列，用于接收从衍射光栅装置出射的经过的波长; （e）用于将检测到的波长转换成代表所述波长的强度的信号的装置; 和（f）用于将表示所述波长的强度的所述信号相关联以确定分析物的浓度并用于测量近红外吸收光谱（特别是水）中来自所述身体组织样品的辐射强度的装置，用于至少 其中之一：提供检测不准确测量的参考; 并且识别由于不能获得组织样品的适当的仪器扫描而导致的无效测量。

    METHOD AND APPARATUS FOR HARMONICALLY FILTERING DATA
    94.
    发明公开
    METHOD AND APPARATUS FOR HARMONICALLY FILTERING DATA 失效
    方法和设备用于数据谐波滤波器

    公开(公告)号：EP1006864A1

    公开(公告)日：2000-06-14

    申请号：EP97906324.5

    申请日：1997-03-21

    申请人： Nellcor Puritan Bennett Incorporated

    发明人： BAKER, Clark, R., Jr. ,  YORKEY, Thomas, J.

    IPC分类号： A61B5/00

    CPC分类号： A61B5/14551 ,  A61B5/7207 ,  A61B5/725

    摘要： A method for measuring a blood constituent using data corresponding to a wavelength of electromagnetic energy transmitted through tissue of a patient comprises a) filtering the data such that motion and noise energy not at integer multiples of a heart rate of the patient are attenuated, thereby generating filtered data; b) comparing selected filtered data with at least one expected data characteristic; c) assigning one of a plurality of variable weights to each selected filtered data based on the comparing step thereby generating a plurality of differently weighted filtered data, the variable weights comprising a plurality of different non-zero numbers; and d) averaging a plurality of the differently weighted filtered data to obtain a twice-filtered data for use in estimating the blood constituent.

    BLOOD PRESSURE SIGNAL PROCESSING
    98.
    发明公开
    BLOOD PRESSURE SIGNAL PROCESSING 审中-公开

    公开(公告)号：EP4417115A1

    公开(公告)日：2024-08-21

    申请号：EP23157241.3

    申请日：2023-02-17

    申请人： Koninklijke Philips N.V.

    发明人： FRANCK, Christoph Florian

    IPC分类号： A61B5/0215

    CPC分类号： A61B5/0215 ,  A61B5/6852 ,  A61B5/725 ,  A61B5/7225 ,  A61B5/7203

    摘要： The invention provides a method for filtering an invasive blood pressure (IBP) measurement signal based on use of a low pass filter with a frequency response curve which is adapted to exhibit shelving behavior, whereby a higher frequency portion of the passband exhibits greater attenuation behavior than a typical low-pass filter. This has the effect of suppressing underdamping and catheter whip artefacts without eliminating signal components at frequencies in the higher frequency portion of the passband.

    METHOD, APPARATUS AND SYSTEM FOR FILTERING PULSE SIGNAL MOTION INTERFERENCE
    100.
    发明公开
    METHOD, APPARATUS AND SYSTEM FOR FILTERING PULSE SIGNAL MOTION INTERFERENCE 审中-实审

    公开(公告)号：EP4388994A1

    公开(公告)日：2024-06-26

    申请号：EP23204034.5

    申请日：2023-10-17

    申请人： Kingfar International Inc.

    IPC分类号： A61B5/024 ,  A61B5/00

    CPC分类号： Y02B20/40 ,  A61B5/721 ,  A61B5/7214 ,  A61B5/725 ,  A61B5/02416 ,  A61B5/02438 ,  A61B5/681 ,  A61B2562/021920130101

    摘要： The present disclosure provides a method, an apparatus and a system for filtering pulse signal motion interference. The method comprises: irradiating a skin of a target human body in motion with a green light source in real time, so as to acquire a corresponding pulse signal from the target human body in real time; preprocessing the acquired pulse signal; and adaptively filtering the preprocessed pulse signal based on acceleration data of the target human body acquired in real time, so as to filter out a motion artifact interference of the pulse signal. The present disclosure can effectively improve the accuracy and effectiveness of filtering the pulse signal motion interference of a person in motion without a large amount of data, with a simple calculation process and without a plurality of PPG sensors, and can effectively improve the real-time performance for filtering the pulse signal motion interference, thereby greatly improving the accuracy and reliability of the heart rate measurement performed based on the pulse signal with the motion interference filtered out.