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CN107157461A 基于光电容积脉搏波的无创连续血压测量方法 无效 - 驳回

基于光电容积脉搏波的无创连续血压测量方法
摘要：
本发明涉及血压测量技术领域，具体地说，涉及一种基于光电容积脉搏波的无创连续血压测量方法。其包括以下步骤：步骤一、采集测量对象的容积脉搏波，获取数字容积脉搏波；步骤二、提取数字容积脉搏波的最大幅值Hp、最小幅值Ht和心脏搏动周期T，进而获取数字容积脉搏波在一个心脏搏动周期T中的脉搏波波形面积Aarea和脉搏波平均幅值Have；步骤三、获取二阶微分容积脉搏波，提取二阶微分容积脉搏波在一个心脏搏动周期T中的第一上升支点P1和第二上升支点P2，进而获取脉搏波传导时间PWTT，脉搏波传导时间PWTT为第一上升支点P1和第二上升支点P2间的时间差；步骤四、获取脉压差DP；步骤五、获取收缩压SBP；步骤六、获取舒张压。本发明测量精度高且测量简便。
摘要（英）：

The invention relates to the technical field of blood pressure measurement, in particular to a photoplethysmography based noninvasive continuous blood pressure measurement method. The method comprises the following steps that 1, a volume pulse wave of a measuring object is collected, and a digital volume pulse wave is obtained; 2, the maximum amplitude Hp, minimum amplitude Ht and cardiac cycle T of the digital volume pulse wave are extracted, and then the pulse waveform area Aarea and pulse wave average amplitude Have of the digital volume pulse wave in one cardiac cycle T are obtained; 3, a second-order differential volume pulse wave is obtained, a first rise fulcrum P1 and a second rise fulcrum P2 in one cardiac cycle T of the second-order differential volume pulse wave are extracted, and then pulse wave translation time PWTT is obtained, wherein the pulse wave translation time is a time difference of the first rise fulcrum P1 and the second rise fulcrum P2; 4, a pulse-pressure difference DP is obtained; 5, systolic blood pressure SBP is obtained; 6, diastolic blood pressure is obtained. Accordingly, the measurement precision is high, and measurement is easy and convenient.

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