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61.发明申请Systems And Methods For Resolving The Continuous Wavelet Transform Of A Signal 有权用于解决信号的连续小波变换的系统和方法公开(公告)号：US20110028810A1
公开(公告)日：2011-02-03
申请号：US12512113
申请日：2009-07-30
IPC分类号： A61B5/145
CPC分类号： G06F17/148 , A61B5/1455 , A61B5/7203 , A61B5/7225 , A61B5/726 , G06K9/00516
摘要： According to an embodiment, techniques for estimating scalogram energy values in a wedge region of a scalogram are disclosed. A pulse oximetry system including a sensor or probe may be used to receive a photoplethysmograph (PPG) signal from a patient or subject. A scalogram, corresponding to the obtained PPG signal, may be determined. In an approach, energy values in the wedge region of the scalogram may be estimated by performing convolution-based or convolution-like operations on the obtained PPG signal, or a transformed version thereof, and the scalogram may be updated according to the estimated values. In an approach, a deskewing technique may be used to align data prior to adding the data to the scalogram. In an approach, one or more signal parameters may be determined based on the resolved and estimated values of the scalogram.
摘要翻译： 根据一个实施例，公开了一种用于在缩水图的楔形区域中估计缩放能量值的技术。 可以使用包括传感器或探针的脉搏血氧饱和度测定系统来接收来自患者或受试者的光谱体积描记器（PPG）信号。 可以确定对应于所获得的PPG信号的标尺。 在一种方法中，可以通过对所获得的PPG信号或其变换版本执行基于卷积或卷积的操作来估计缩放图楔形区域中的能量值，并且可以根据估计值更新缩放图。 在一种方法中，可以使用偏斜技术在将数据添加到缩放图之前对准数据。 在一种方法中，一个或多个信号参数可以基于缩放图的分辨和估计值来确定。
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62.发明申请Systems And Methods For Determining Physiological Information Using Selective Transform Data 失效使用选择性变换数据确定生理信息的系统和方法公开(公告)号：US20110026784A1
公开(公告)日：2011-02-03
申请号：US12512143
申请日：2009-07-30
IPC分类号： G06K9/00
CPC分类号： G06K9/00516 , A61B5/02416 , A61B5/14551 , A61B5/7207 , A61B5/726
摘要： According to embodiments, a pulse band region is identified in a wavelet scalogram of a physiological signal (e.g., a plethysmograph or photoplethysmograph signal). Components of the scalogram at scales larger than the identified pulse band region are then used to determine a baseline signal in wavelet space. The baseline signal may then be used to normalize the physiological signal. Physiological information may be determined from the normalized signal. For example, oxygen saturation may be determined using a ratio of ratios or any other suitable technique.
摘要翻译： 根据实施例，在生理信号（例如，体积描记器或光电体积描记信号）的小波图示中识别脉冲带区域。 然后使用尺度大于识别的脉冲带区域的标尺的分量来确定小波空间中的基线信号。 然后可以使用基线信号来标准化生理信号。 生理信息可以从归一化信号确定。 例如，氧饱和度可以使用比率或任何其它合适的技术来确定。
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63.发明申请Signal Processing Techniques For Determining Signal Quality Using A Wavelet Transform Ratio Surface 审中-公开使用小波变换比表面确定信号质量的信号处理技术公开(公告)号：US20100298728A1
公开(公告)日：2010-11-25
申请号：US12469498
申请日：2009-05-20
IPC分类号： A61B5/02
CPC分类号： A61B5/14551 , A61B5/0002 , A61B5/02416 , A61B5/7203 , A61B5/7207 , A61B5/7221 , A61B5/726 , A61B2562/08
摘要： According to embodiments, a wavelet transform ratio surface measure signal may be generated from two PPG signals. Values of the wavelet transform ratio surface measure signal at a given moment of time (i.e., instantaneous values) may be indicative of localized signal discrepancies within and/or between the PPG signals such as noise and signal artifacts. Spikes in the instantaneous values of the wavelet transform ratio surface measure signal may be located and used to determine a signal quality measure for the PPG signals. Characteristics of the spikes such as number, location, grouping, distribution, amplitude, and polarity may be used in the signal quality determination.
摘要翻译： 根据实施例，可以从两个PPG信号产生小波变换比表面测量信号。 在给定时刻（即瞬时值）的小波变换比表面测量信号的值可以指示PPG信号之内和/或之间的区域性信号差异，例如噪声和信号伪像。 小波变换比表面测量信号的瞬时值的峰值可以被定位并用于确定PPG信号的信号质量测量。 尖峰的特征，如数量，位置，分组，分布，振幅和极性可用于信号质量确定。
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公开(公告)号：US20100249544A1
公开(公告)日：2010-09-30
申请号：US12750950
申请日：2010-03-31
IPC分类号： A61B5/00
CPC分类号： A61B5/14551 , A61B5/02125 , A61B5/4824 , A61B5/7203 , A61B5/7225 , A61B5/726 , A61B2560/0223
摘要： The present disclosure relates to systems and methods for monitoring pain management using measurements of physiological parameters based on a PPG signal. A reference physiological parameter may be compared against a later measurement to identify a change in condition that may indicate a pain management problem.
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65.发明申请Extraction Of Physiological Measurements From A Photoplethysmograph (PPG) Signal 有权从光电容积描记器（PPG）信号提取生理测量公开(公告)号：US20100087720A1
公开(公告)日：2010-04-08
申请号：US12244141
申请日：2008-10-02
申请人： Paul Stanley Addison
发明人： Paul Stanley Addison
IPC分类号： A61B5/05
CPC分类号： A61B5/14551 , A61B5/0205 , A61B5/021 , A61B5/024 , A61B5/7239
摘要： The present disclosure relates to signal processing and, more particularly, to determining the value of a physiological parameter, such as the blood oxygen saturation (SpO2) of a subject. In an embodiment, a first baseline for a first waveform and a second baseline for a second waveform are determined. In this embodiment, the first and second waveforms are indicative of the physiological parameter of the subject. The first and second waveforms are filtered to obtain a first direct-current (DC) component for the first waveform and a second DC component for the second waveform. A measured value for the physiological parameter is derived from the first and second baseline signals, and the first and second DC components. In an embodiment, the measured value for the physiological parameter is determined based on a ratio of the normalized difference between the DC component and the baseline signal for the first waveform with respect to same for the second waveform.
摘要翻译： 本公开涉及信号处理，更具体地，涉及确定生理参数的值，例如受试者的血氧饱和度（SpO2）。 在一个实施例中，确定第一波形的第一基线和第二波形的第二基线。 在该实施例中，第一和第二波形表示对象的生理参数。 对第一和第二波形进行滤波以获得用于第一波形的第一直流（DC）分量和用于第二波形的第二直流分量。 生理参数的测量值从第一和第二基线信号以及第一和第二DC分量导出。 在一个实施例中，生理参数的测量值基于第二波形相对于第一波形的DC分量和基线信号之间的归一化差异的比率来确定。
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公开(公告)号：US20100016738A1
公开(公告)日：2010-01-21
申请号：US12242828
申请日：2008-09-30
IPC分类号： A61B5/02
CPC分类号： A61B5/02416 , A61B5/0261 , A61B5/14551 , A61B5/6826 , A61B5/6838 , A61B5/7203 , A61B5/726
摘要： According to embodiments, techniques for using continuous wavelet transforms to process pulses from a photoplethysmographic (PPG) signal are disclosed. The continuous wavelet transform of the PPG signal may be used to identify and characterize features and their periodicities within a signal. Regions, phases and amplitudes within the scalogram associated with these features may then be analyzed to identify, locate, and characterize a true pulse within the PPG signal. Having characterized and located the pulse in the PPG (possibly also using information gained from conventional pulse processing techniques such as, for example, by identifying turning points for candidate pulse maxima and minima on the PPG, frequency peak picking for candidate scales of pulses, etc.), the PPG may be parameterized for ease of future processing.
摘要翻译： 根据实施例，公开了使用连续小波变换来处理来自光电体积描记术（PPG）信号的脉冲的技术。 PPG信号的连续小波变换可用于识别和表征特征及其在信号内的周期性。 然后可以分析与这些特征相关联的标尺内的区域，相位和振幅，以识别，定位和表征PPG信号内的真实脉冲。 已经将脉冲特征化并定位在PPG中（可能还使用从常规脉冲处理技术获得的信息，例如通过识别候选脉冲最大值的转折点和PPG上的最小值，用于候选脉冲等级的频率峰值拾取 。），可以对PPG进行参数化，以便将来处理。
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67.发明申请Systems and Methods Using Induced Perturbation to Determine Physiological Parameters 失效使用诱导扰动来确定生理参数的系统和方法公开(公告)号：US20100016734A1
公开(公告)日：2010-01-21
申请号：US12248738
申请日：2008-10-09
IPC分类号： A61B5/02
CPC分类号： A61B5/14551 , A61B5/0051 , A61B5/0053 , A61B5/021 , A61B5/02108 , A61B5/7225 , A61B5/726 , A61B2560/0223
摘要： According to embodiments, systems and methods for non-invasive blood pressure monitoring are disclosed. An exciter may induce perturbations in a subject, and a sensor or probe may be used to obtain a detected signal from the subject. The detected signal may then be used to measure one or more physiological parameters of the patient. For example if the perturbations are based on a known signal, any differences between the known signal and the input signal may be attributable to the patient's physiological parameters. A phase drift between the perturbation signal and the detected signal may be determined from a comparison of the scalograms of the exciter location and the sensor or probe location. From the scalogram comparison, more accurate and reliable physiological parameters may be determined.
摘要翻译： 根据实施例，公开了用于非侵入性血压监测的系统和方法。 激励器可能引起受试者的扰动，并且可以使用传感器或探针来获得来自受试者的检测信号。 然后可以使用检测到的信号来测量患者的一个或多个生理参数。 例如，如果扰动基于已知信号，则已知信号和输入信号之间的任何差异可归因于患者的生理参数。 扰动信号和检测信号之间的相位漂移可以根据激励器位置与传感器或探测器位置的缩放图的比较来确定。 从标尺比较可以确定更准确可靠的生理参数。
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公开(公告)号：US20100016693A1
公开(公告)日：2010-01-21
申请号：US12249087
申请日：2008-10-10
IPC分类号： A61B5/024 , A61B5/1455
CPC分类号： A61B5/14551 , A61B5/7207 , A61B5/7225 , A61B5/7257 , A61B5/726
摘要： According to embodiments, techniques for using continuous wavelet transforms and spectral transforms to identify pulse rates from a photoplethysmographic (PPG) signal are disclosed. According to embodiments, candidate pulse rates of the PPG signal may be identified from a wavelet transformed PPG signal and a spectral transformed PPG signal. A pulse rate may be determined from the candidate pulse rates by selecting one of the candidate pulse rates or by combining the candidate pulse rates. According to embodiments, a spectral transform of a PPG signal may be performed to identify a frequency region associated with a pulse rate of the PPG signal. A continuous wavelet transform of the PPG signal at a scale corresponding to the identified frequency region may be performed to determine a pulse rate from the wavelet transformed signal.
摘要翻译： 根据实施例，公开了使用连续小波变换和频谱变换来识别来自光电体积描记术（PPG）信号的脉率的技术。 根据实施例，可以从小波变换的PPG信号和频谱变换的PPG信号中识别PPG信号的候选脉冲速率。 可以通过选择候选脉冲速率之一或通过组合候选脉冲速率从候选脉冲速率确定脉率。 根据实施例，可以执行PPG信号的频谱变换以识别与PPG信号的脉冲速率相关联的频率区域。 可以执行以与所识别的频率区域对应的比例的PPG信号的连续小波变换，以从小波变换信号确定脉率。
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公开(公告)号：US20100016690A1
公开(公告)日：2010-01-21
申请号：US12249068
申请日：2008-10-10
申请人： James Watson , Paul Stanley Addison
发明人： James Watson , Paul Stanley Addison
IPC分类号： A61B5/1455
CPC分类号： A61B5/14551 , A61B5/7203 , A61B5/7257 , A61B5/726 , A61B5/742
摘要： According to embodiments, techniques for using continuous wavelet transforms and spectral transforms to determine oxygen saturation from photoplethysmographic (PPG) signals are disclosed. According to embodiments, a first oxygen saturation may be determined from wavelet transformed PPG signals and a second oxygen saturation may be determined from spectral transformed PPG signals. An optimal oxygen saturation may be determined by selecting one of the first and the second oxygen saturation or by combining the first and the second oxygen saturation. According to embodiments, a spectral transform of PPG signals may be performed to identify a frequency region associated with a pulse rate of the PPG signal. A continuous wavelet transform of the PPG signals at a scale corresponding to the identified frequency region may be performed to determine oxygen saturation from the wavelet transformed signal.
摘要翻译： 根据实施例，公开了使用连续小波变换和频谱变换来确定来自光电体积描记术（PPG）信号的氧饱和度的技术。 根据实施例，可以从小波变换的PPG信号确定第一氧饱和度，并且可以从光谱变换的PPG信号确定第二氧饱和度。 可以通过选择第一和第二氧饱和度之一或通过组合第一和第二氧饱和度来确定最佳氧饱和度。 根据实施例，可以执行PPG信号的频谱变换以识别与PPG信号的脉冲速率相关联的频率区域。 可以执行以与所识别的频率区域对应的比例的PPG信号的连续小波变换，以从小波变换信号确定氧饱和度。
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公开(公告)号：US20100016676A1
公开(公告)日：2010-01-21
申请号：US12242871
申请日：2008-09-30
IPC分类号： A61B5/00
CPC分类号： A61B5/726 , A61B5/14551 , A61B5/7203
摘要： According to embodiments, systems and method are provided for adaptively filtering signals. A combination of filtering techniques is described in which non-wavelet based filtering techniques are used with wavelet-based filtering techniques to filter an input signal. One or more physiological parameters may then be determined from the filtered output signal.
摘要翻译： 根据实施例，提供了用于自适应地过滤信号的系统和方法。 描述了滤波技术的组合，其中使用基于小波的滤波技术的基于小波的滤波技术来对输入信号进行滤波。 然后可以从滤波的输出信号确定一个或多个生理参数。
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