Low power pulse oximeter
    1.
    发明申请
    Low power pulse oximeter 有权
    低功率脉搏血氧仪

    公开(公告)号:US20030069486A1

    公开(公告)日:2003-04-10

    申请号:US09972077

    申请日:2001-10-05

    CPC classification number: A61B5/14551 A61B2560/0209

    Abstract: A low power pulse oximeter includes an input stage for amplifying a signal received from a light detector that is switchably connected to the power supply that powers the amplifier. The oximeter also includes an output stage with an LED driver circuit that is switchably connected to the power supply that powers the LED driver circuit. The input and output stages are switchably connected to the power supply when measurements need to be taken. When measurements do not need to be taken, they are switched off to reduce the power consumption of the oximeter.

    Abstract translation: 低功率脉搏血氧计包括用于放大从光检测器接收的信号的输入级,该检测器可切换地连接到为放大器供电的电源。 血氧计还包括具有LED驱动电路的输出级,该LED驱动器电路可切换地连接到为LED驱动器电路供电的电源。 当需要进行测量时,输入和输出级可切换地连接到电源。 当不需要进行测量时,它们被关闭以降低血氧计的功耗。

    MYOGRAM DETERMINATION FROM ECG SIGNAL
    2.
    发明申请

    公开(公告)号:US20170172449A1

    公开(公告)日:2017-06-22

    申请号:US15449676

    申请日:2017-03-03

    Inventor: David W. Mortara

    Abstract: Systems and methods for measuring signals representative of muscle activity are provided. One method includes detecting an ECG signal through a plurality of electrodes. The ECG signal includes a plurality of ECG sample signals, and each ECG sample signal is a bipolar signal associated with two of the plurality of electrodes and includes a cardiac signal component and a myographic signal component. The method further includes filtering each of the ECG sample signals to remove at least a portion of the cardiac signal component and generate a combined myographic power signal for the two of the plurality of electrodes with which the ECG sample signal is associated. Each combined myographic power signal represents a myographic potential between the two electrodes. The method further includes calculating individual myographic power signals for each of the plurality of electrodes by applying the combined myographic power signals within a covariance matrix.

    Method for blood pressure measurement from noninvasive oscillometric pressure signals
    3.
    发明授权
    Method for blood pressure measurement from noninvasive oscillometric pressure signals 有权
    从无创示波压力信号测量血压的方法

    公开(公告)号:US08926521B2

    公开(公告)日:2015-01-06

    申请号:US13047780

    申请日:2011-03-14

    CPC classification number: A61B5/0225 A61B5/02225

    Abstract: Disclosed embodiments include a method for measuring non-invasive blood pressure from an oscillometric signal and a cuff pressure signal implemented in a medical apparatus comprising: (a) calculating a pulse pressure signal by subtracting an upper and a lower envelope of the oscillometric signal; and (b) calculating without the use of beat detection a mean arterial pressure, a systolic blood pressure, and a diastolic blood pressure from said oscillometric signal, said cuff pressure signal, and a plurality of thresholds a device with at least one processor.

    Abstract translation: 公开的实施例包括用于从示波器信号测量非侵入性血压的方法和在医疗设备中实现的袖带压力信号,包括:(a)通过减去示波信号的上下包络来计算脉搏压力信号; 和(b)在不使用搏动检测的情况下计算来自所述示波信号,所述袖带压力信号的平均动脉压,收缩压和舒张压,以及具有至少一个处理器的装置的多个阈值。

    High resolution ECG waveform processor
    4.
    发明授权
    High resolution ECG waveform processor 失效
    高分辨率ECG波形处理器

    公开(公告)号:US4630204A

    公开(公告)日:1986-12-16

    申请号:US582225

    申请日:1984-02-21

    Inventor: David W. Mortara

    CPC classification number: A61B5/0464 A61B5/7264 A61B5/7225 Y10S128/901

    Abstract: A waveform processor for processing waveforms of the ECG type from surface electrodes connected to the human body. Differential lead waveforms are sampled by a fast, high resolution A/D converter which are thereafter provided to a preprocessor where filtering and a reconstruction of the leads waveforms takes place. The waveforms are then detected, classified, and averaged to form composites of the X, Y, and Z terminal leads. Special filtering is used to detect the high frequency low amplitude features of the composite waveforms.

    Abstract translation: 一种波形处理器,用于从连接到人体的表面电极处理ECG类型的波形。 差分引线波形由快速,高分辨率的A / D转换器采样,其后提供给预处理器,其中发生滤波和重构引线波形。 然后检测,分类和平均波形以形成X,Y和Z端子引线的复合材料。 特殊滤波用于检测复合波形的高频低振幅特征。

    Myogram determination from ECG signal
    6.
    发明授权
    Myogram determination from ECG signal 有权
    来自ECG信号的肌瘤图确定

    公开(公告)号:US09585583B1

    公开(公告)日:2017-03-07

    申请号:US14196962

    申请日:2014-03-04

    Inventor: David W. Mortara

    Abstract: Systems and methods for measuring signals representative of muscle activity are provided. One method includes detecting an ECG signal through a plurality of electrodes. The ECG signal includes a plurality of ECG sample signals, and each ECG sample signal is a bipolar signal associated with two of the plurality of electrodes and includes a cardiac signal component and a myographic signal component. The method further includes filtering each of the ECG sample signals to remove at least a portion of the cardiac signal component and generate a combined myographic power signal for the two of the plurality of electrodes with which the ECG sample signal is associated. Each combined myographic power signal represents a myographic potential between the two electrodes. The method further includes calculating individual myographic power signals for each of the plurality of electrodes by applying the combined myographic power signals within a covariance matrix.

    Abstract translation: 提供了用于测量代表肌肉活动的信号的系统和方法。 一种方法包括通过多个电极检测ECG信号。 ECG信号包括多个ECG采样信号,并且每个ECG采样信号是与多个电极中的两个电极相关联的双极信号,并且包括心脏信号分量和肌理信号分量。 该方法还包括对每个ECG采样信号进行滤波以去除心脏信号分量的至少一部分,并产生与ECG采样信号相关联的多个电极中的两个电极的组合肌印功率信号。 每个组合的肌电信号代表两个电极之间的肌电潜能。 该方法还包括通过在协方差矩阵内应用组合的肌电信号来计算多个电极中的每个电极的各个肌印功率信号。

    IMPEDANCE MEASUREMENT SYSTEM
    7.
    发明申请
    IMPEDANCE MEASUREMENT SYSTEM 有权
    阻抗测量系统

    公开(公告)号:US20150327811A1

    公开(公告)日:2015-11-19

    申请号:US14812836

    申请日:2015-07-29

    Inventor: David W. Mortara

    CPC classification number: A61B5/6843 A61B5/04085 A61B5/0424 A61B5/0531

    Abstract: Systems and methods for monitoring the condition of electrodes used in biological signal measurement are provided. One method includes applying a first test signal having a first frequency to at least one of a plurality of electrodes and applying a second test signal having a second frequency to at least one of the plurality of electrodes. Both frequencies are below a frequency range associated with the biological signal. The method further includes capturing the biological signal while applying the plurality of test signals and generating an output signal that includes both the measured biological signal and the plurality of test signals. The method further includes retrieving an output amplitude for each of the plurality of test signals from the output signal and calculating an estimated impedance for each of the plurality of electrodes based on the retrieved output amplitudes of the plurality of test signals.

    Abstract translation: 提供了用于监测生物信号测量中使用的电极状态的系统和方法。 一种方法包括将具有第一频率的第一测试信号应用于多个电极中的至少一个并且向多个电极中的至少一个施加具有第二频率的第二测试信号。 两个频率都低于与生物信号相关的频率范围。 该方法还包括在应用多个测试信号的同时捕获生物信号,并产生包括测量的生物信号和多个测试信号两者的输出信号。 该方法还包括从输出信号中检索多个测试信号中的每一个的输出振幅,并且基于检测到的多个测试信号的输出振幅来计算多个电极中的每一个的估计阻抗。

    Multiple channel biomedical digital telemetry transmitter
    8.
    发明授权
    Multiple channel biomedical digital telemetry transmitter 失效
    多通道生物医学数字遥测发射机

    公开(公告)号:US5704351A

    公开(公告)日:1998-01-06

    申请号:US396151

    申请日:1995-02-28

    Abstract: A digital telemetry transmitter for transmitting eight channels of diagnostic quality electrocardiographic data has input circuitry for receiving analog EKG signals originating at electrodes on the patient. The input circuitry includes a circuit for ascertaining the impedance of the electrode connection to the patient and to indicate an electrode fault. EKG signals from the input circuit are provided to a digital/analog converter for converting the analog signals into corresponding digital signals. The analog/digital converter may comprise an eight channel, 20-bit converter, sampling the input signals at a frequency of 10 KHz and providing a digital output signal having a frequency of 500 Hz. The output of the analog/digital converter is provided to a microprocessor control which provides a digital EKG modulating output signal. The output signal is periodically inverted to avoid stationarity in the transmitted data. The output signal includes error correction data that enables a receiver for the transmitted data to correct the digital EKG signal for noise. The microprocessor control changes the resolution of the transmitter when large signal changes occur in the data to accommodate such signals and to provide data compression. An rf signal generator generates an rf carrier signal. The modulating output signal of the microprocessor control is provided as a frequency modulating signal to the rf signal generator. The rf signal generator is stabilized against alterations due to reflected antenna loading.

    Abstract translation: 用于发送八通道诊断质量心电图数据的数字遥测发射器具有用于接收源自患者电极的模拟EKG信号的输入电路。 输入电路包括用于确定与患者的电极连接的阻抗并指示电极故障的电路。 来自输入电路的EKG信号被提供给用于将模拟信号转换成相应的数字信号的数/模转换器。 模拟/数字转换器可以包括八通道20位转换器,以10KHz的频率对输入信号进行采样,并提供具有500Hz频率的数字输出信号。 模拟/数字转换器的输出被提供给提供数字EKG调制输出信号的微处理器控制。 周期性地反转输出信号以避免发送数据中的平稳性。 输出信号包括纠错数据,使得接收机能够发送数据,以校正数字EKG信号的噪声。 当在数据中发生大的信号变化以适应这种信号并提供数据压缩时,微处理器控制改变发射机的分辨率。 rf信号发生器产生rf载波信号。 微处理器控制的调制输出信号作为频率调制信号提供给rf信号发生器。 rf信号发生器由于反射天线负载而被稳定而不能改变。

    IMPEDANCE MEASUREMENT SYSTEM
    9.
    发明申请

    公开(公告)号:US20180199885A1

    公开(公告)日:2018-07-19

    申请号:US15918812

    申请日:2018-03-12

    Inventor: David W. Mortara

    CPC classification number: A61B5/6843 A61B5/04085 A61B5/0424 A61B5/0531

    Abstract: Systems and methods for monitoring the condition of electrodes used in biological signal measurement are provided. One method includes applying a first test signal having a first frequency to at least one of a plurality of electrodes and applying a second test signal having a second frequency to at least one of the plurality of electrodes. Both frequencies are below a frequency range associated with the biological signal. The method further includes capturing the biological signal while applying the plurality of test signals and generating an output signal that includes both the measured biological signal and the plurality of test signals. The method further includes retrieving an output amplitude for each of the plurality of test signals from the output signal and calculating an estimated impedance for each of the plurality of electrodes based on the retrieved output amplitudes of the plurality of test signals.

    Impedance measurement system
    10.
    发明授权

    公开(公告)号:US09913614B2

    公开(公告)日:2018-03-13

    申请号:US14812836

    申请日:2015-07-29

    Inventor: David W. Mortara

    CPC classification number: A61B5/6843 A61B5/04085 A61B5/0424 A61B5/0531

    Abstract: Systems and methods for monitoring the condition of electrodes used in biological signal measurement are provided. One method includes applying a first test signal having a first frequency to at least one of a plurality of electrodes and applying a second test signal having a second frequency to at least one of the plurality of electrodes. Both frequencies are below a frequency range associated with the biological signal. The method further includes capturing the biological signal while applying the plurality of test signals and generating an output signal that includes both the measured biological signal and the plurality of test signals. The method further includes retrieving an output amplitude for each of the plurality of test signals from the output signal and calculating an estimated impedance for each of the plurality of electrodes based on the retrieved output amplitudes of the plurality of test signals.

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