NON-INVASIVE BLOOD PRESSURE MONITORING DEVICE AND METHOD

    公开(公告)号:US20180235488A1

    公开(公告)日:2018-08-23

    申请号:US15751991

    申请日:2016-09-03

    发明人: Paul AELEN

    IPC分类号: A61B5/022 A61B5/021

    摘要: The present disclosure relates to a device and a method for blood pressure measurement, the device (12) comprising a pressurizing unit (30), that is arranged to supply, via at least one supply line (32), a wearable cuff (14) which is arranged to pressurize a measurement site (16) of a subject of interest, a pressure detection unit (40) that detects a cuff pressure (p2) in a direct or mediate fashion, a control section (50) comprising a feed forward 5 controller (64) arranged to output a target inflation flow signal based on a desired inflation rate (or pressure), a feedback controller (62) arranged to minimize the error between a target inflation rate (or pressure) and an actual inflation rate (or pressure), wherein the output of the feed forward controller (64) and the output of the feedback controller (62) are combined to drive the pressurizing unit (30), and a blood pressure determination unit (100) arranged to calculate a blood pressure value based on the cuff pressure (p2) detected by the pressure detection unit (40) during inflation when the cuff pressure (p2) is increased by the pressurizing unit (30) in accordance with a defined pressurizing regime.

    Method and apparatus for arterial blood pressure measurement and individualized rectifying technology

    公开(公告)号:US09974449B2

    公开(公告)日:2018-05-22

    申请号:US13466086

    申请日:2012-05-07

    摘要: A method and apparatus for indirect, quantitative estimation of beat-to-beat arterial blood pressure utilizing the individualized rectifying technique. A function TK=H(P) that describes the relationship between Korotkoff's sound delay time Tk and cuff pressure P is obtained by measuring the different cuff pressure P and corresponding Tk in the Korotkoff's sound sensor that is distal to the cuff. Keep the cuff pressure at a constant value Pm, the blood pressure variance can be calculated using the Korotkoff's sound delay time Tkm, according to the function Tk=H(P). The invention can measure the beat-to-beat artery blood pressure indirectly. The technique can be applied to obtain individual coefficient of regress equation for continuous arterial blood pressure measurement by the instantaneous blood pressure fluctuation, which make the rectifying technique more safe, effective and less erroneous. The technique makes the operation of noninvasive continuous blood pressure measurement for long time more practical.

    Blood pressure measurement device

    公开(公告)号:US09706933B2

    公开(公告)日:2017-07-18

    申请号:US12993216

    申请日:2009-05-21

    IPC分类号: A61B5/02 A61B5/0225 A61B5/022

    CPC分类号: A61B5/0225 A61B5/02225

    摘要: In a sphygmomanometer, a value representing a perimeter of a measuring portion is obtained. A parameter for controlling a drive voltage of a pump is determined based on the value. The drive voltage is determined based on the parameter and an internal pressure of a fluid bladder to pressurize the fluid bladder. In pressurizing process, a diastolic blood pressure value is calculated. A systolic blood pressure value is estimated, and when the internal pressure of the fluid bladder reaches the pressure, the pressurizing is stopped. A gap of a valve for discharging the fluid from the fluid bladder is determined based on a perimeter of a measuring portion, and the fluid bladder is depressurized with the gap constant. In the depressurizing process, the systolic blood pressure value is calculated. When the systolic blood pressure value is calculated, the fluid is discharged from the fluid bladder, and the measurement is terminated.