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    Method for Determining Pulse Wave Velocity in an Artery
    3.
    发明申请
    Method for Determining Pulse Wave Velocity in an Artery 审中-公开
    确定动脉脉搏波速度的方法

    公开(公告)号：US20150238095A1

    公开(公告)日：2015-08-27

    申请号：US14625110

    申请日：2015-02-18

    Applicant: QUALCOMM Incorporated

    Inventor： Lars Lading ,  David Boettcher Baek

    IPC: A61B5/02 ,  A61B5/00 ,  A61B5/024 ,  A61B5/0245 ,  A61B8/02 ,  A61B5/055

    Abstract: Methods, devices, and systems for determining an estimated pulse wave velocity of an artery of a subject. Embodiment methods may include applying a series of counter pressures, measuring a first parameter related to pulse wave velocity, estimating a second parameter in a model, and determining the estimated pulse wave velocity. The counter pressures may be applied at a set location on the subject over the artery with a pressure device. Each of the counter pressures may be different from one another, applied at the set location, and between zero and a diastolic pressure of the subject. The first parameter may be measured when each of the series of counter pressures is applied. The model may establish a relationship of the first parameter measured to each of the series of counter pressures. The estimated pulse wave velocity may be determined based on the second parameter estimated in the model.

    Abstract translation: 用于确定受试者的动脉的估计脉搏波速度的方法，装置和系统。 实施方式可以包括应用一系列反压力，测量与脉搏波速度相关的第一参数，估计模型中的第二参数，以及确定估计的脉搏波速度。 反压力可以用压力装置施加在动脉上的受试者的设定位置上。 每个反压力可以彼此不同，施加在设定位置处，并且在受试者的舒张压和零度压力之间。 当施加一系列反压力时，可以测量第一参数。 该模型可以建立与所述一系列反压力中的每一个测量的第一参数的关系。 估计的脉搏波速度可以基于在模型中估计的第二参数来确定。

    Blood pressure estimation based on pulse wave velocity
    4.
    发明授权
    Blood pressure estimation based on pulse wave velocity 有权

    公开(公告)号：US10213117B2

    公开(公告)日：2019-02-26

    申请号：US15215260

    申请日：2016-07-20

    Applicant: QUALCOMM Incorporated

    Inventor： Lars Lading ,  David Boettcher Baek

    IPC: A61B5/04 ,  A61B5/021 ,  A61B5/02 ,  A61B5/024 ,  A61B5/0285 ,  A61B5/00 ,  A61B5/026 ,  A61B5/107

    Abstract: One aspect of the subject matter described in this disclosure can be implemented in a device capable of estimating blood pressure. The device includes two or more sensors capable of performing measurements along an artery. The device also includes at least one processing unit coupled with the two or more sensors. The processing unit is capable of accessing one or more parameters including a stress-strain parameter based on a hydrostatic pressure calibration. The processing unit also is capable of determining a pulse transit time (PTT) based on the measurements, and determining a pulse wave velocity (PWV) based on the PTT. The processing unit is further capable of determining a blood pressure based on the PWV and the stress-strain parameter.

    IMPEDANCE SENSING
    7.
    发明申请
    IMPEDANCE SENSING 审中-公开
    阻抗感应

    公开(公告)号：US20170007186A1

    公开(公告)日：2017-01-12

    申请号：US14795703

    申请日：2015-07-09

    Applicant: QUALCOMM Incorporated

    Inventor： David Boettcher Baek ,  Donald Bernard Lemersal ,  Lars Lading

    IPC: A61B5/00 ,  A61B5/053

    CPC classification number: A61B5/725 ,  A61B5/021 ,  A61B5/0295 ,  A61B5/053 ,  A61B5/0535 ,  A61B5/6801 ,  A61B5/6825 ,  A61B5/7225 ,  A61B2560/0214 ,  A61B2562/04

    Abstract: This disclosure provides systems, methods and apparatus for performing signal processing in impedance sensing applications, and more specifically, for recovering data from an amplitude-modulated signal. In one aspect, a device includes a sensing circuit operable to sense an amplitude-modulated signal having a carrier frequency. The device also includes a mixer operable to mix the amplitude-modulated signal with a mixing signal having a mixing frequency to provide a frequency-downshifted signal having an intermediate frequency less than the carrier frequency. The device also includes a filter operable to filter the frequency-downshifted signal to provide a filtered signal. The device further includes a sampler operable to undersample the filtered signal at an undersampling frequency to provide a digital signal, the digital signal being representative of a modulating signal.

    Abstract translation: 本公开提供了用于在阻抗感测应用中执行信号处理的系统，方法和装置，更具体地，用于从幅度调制信号恢复数据。 一方面，一种设备包括感测电路，其可操作以感测具有载波频率的幅度调制信号。 该装置还包括可操作以将调幅信号与混频信号混合的混频器，以提供具有小于载频的中频的降频转换信号。 该装置还包括可用于对降频转换信号进行滤波以提供滤波信号的滤波器。 该装置还包括采样器，其可操作以在欠采样频率下对经滤波的信号进行欠采样以提供数字信号，数字信号代表调制信号。

    Non-Interfering Blood Pressure Measuring
    8.
    发明申请
    Non-Interfering Blood Pressure Measuring 审中-公开
    非干扰性血压测量

    公开(公告)号：US20150327784A1

    公开(公告)日：2015-11-19

    申请号：US14714776

    申请日：2015-05-18

    Applicant: QUALCOMM Incorporated

    Inventor： Lars Lading ,  David Boettcher Baek

    IPC: A61B5/021 ,  A61B5/11 ,  A61B5/00

    CPC classification number: A61B5/02108 ,  A61B5/0059 ,  A61B5/0082 ,  A61B5/02007 ,  A61B5/021 ,  A61B5/02116 ,  A61B5/053 ,  A61B5/0535 ,  A61B5/1075 ,  A61B5/1126 ,  A61B5/6898 ,  A61B5/725 ,  A61B5/726 ,  A61B5/7275 ,  A61B5/7278 ,  A61B5/7282 ,  A61B5/7285 ,  A61B8/04 ,  A61B2560/0223 ,  A61B2560/0238 ,  A61B2560/0242 ,  A61B2560/0247 ,  A61B2562/0214 ,  A61B2562/0219

    Abstract: Systems, methods, and devices of various embodiments enable measurement of blood pressure from an artery. The various embodiments may measure, using a non-interfering arterial measurement sensor, a first change in distension of the artery at a measurement location without interference to an arterial pressure at the measurement location during a series of pulses. A first pulse rate and estimated pulse pressures may be determined from the first change in distension. A coefficient may be determined fitting an exponentially decaying function representing an exponential decay of a portion of a diastolic phase to select ones of the estimated pulse pressures corresponding to the diastolic phase. An absolute blood pressure may be determined by applying the coefficient to a select mathematical model expressing a first relationship between the first change in distension of the artery and the pulse pressure in the artery at the measurement location.

    Abstract translation: 各种实施例的系统，方法和装置能够测量来自动脉的血压。 各种实施例可以使用非干扰性动脉测量传感器在一系列脉冲期间测量动脉在测量位置处的扩张的第一变化，而不干扰测量位置处的动脉压。 可以从膨胀的第一变化确定第一脉搏率和估计的脉搏压力。 可以确定系数，其适合表示舒张期的一部分的指数衰减的指数衰减函数，以选择与舒张期相对应的估计脉冲压。 可以通过将系数应用于表示动脉扩张的第一变化与测量位置的动脉中的脉压之间的第一关系的选择数学模型来确定绝对血压。

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