Method for indirectly estimating and measuring arterial blood pressure by using PPG sensor

An arterial blood pressure and sensor technology, applied in the field of biomedicine, can solve the problems of large patient disturbance and difficult monitoring.

Inactive Publication Date: 2020-10-20
感易(上海)传感技术有限公司
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in the actual detection operation of the existing arterial blood pressure measurement, it needs to be worn for a long time, the monitoring is difficult, and the patient is greatly disturbed.

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  • Method for indirectly estimating and measuring arterial blood pressure by using PPG sensor
  • Method for indirectly estimating and measuring arterial blood pressure by using PPG sensor

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Embodiment Construction

[0028] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0029] A method of indirectly estimating and measuring arterial blood pressure using a PPG sensor of the present invention comprises the following steps:

[0030] Step 1, synchronously measure the pulse wave signal of the pericardium and the pulse wave signal of the far center on a certain arterial segment (i section) on the arterial tree of the detected person through the PPG sensor;

[0031] Step 2. According to the synchronously measured pulse wave signal of the proximal point and the pulse wave signal of the distal point, the pulse wave velocity PWV of each local arterial segment of the body can be obtained respectively, wherein, the pulse wave velocity PWV of the i-th arterial segment The pulse wave velocity is defined as PWVi, then there is PWVi=ΔSi / Δti, where ΔSi is the length of the i-th arterial segment, and Δti is the st...

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Abstract

The invention discloses a method for indirectly estimating and measuring arterial blood pressure by using a PPG sensor. The method is characterized by comprising the following steps of: 1, synchronously measuring a pulse wave signal of a point close to the heart and a pulse wave signal of a point away from the heart on any local arterial segment of an arterial tree of a subject through the PPG sensor; step 2, calculating a pulse wave velocity (PWV) of the local arterial segment according to the measured pulse wave signals; and step 3, according to the PWV obtained in the step 2, indirectly estimating the basic pressure P of an arterial blood pressure through correlation between the arterial blood pressure measured by an auscultation method and an oscillography method and the PWV of the related arterial segment. The method is noninvasive, free of oversleeves and invasion, free of management by specially-assigned persons and capable of being continuously used for a long time; an arterialblood flow does not need to be blocked when a systolic pressure is measured; the problems that long-time wearing is needed in actual detection operation, the monitoring difficulty is large, and disturbance to a patient is large are solved; and the effect of better actual operability is achieved.

Description

technical field [0001] The invention relates to a method for indirectly estimating and measuring arterial blood pressure by using a PPG sensor, belonging to the technical field of biomedicine. Background technique [0002] Hypertension is a syndrome that endangers human health. Long-term hypertension can cause serious damage to target organs such as the heart, brain, and kidneys. The epidemiology of hypertension shows that the prevalence and incidence of hypertension in my country are on the rise. Blood pressure measurement is the most common and important method for clinical diagnosis, evaluation of hypertension and its curative effect. Blood pressure measurement can be divided into invasive blood pressure measurement and non-invasive blood pressure measurement. Invasive blood pressure refers to the blood pressure value obtained by directly inserting a catheter into the arterial blood vessel. It can measure both arterial blood pressure and venous blood pressure. It is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/021
CPCA61B5/02108
Inventor 王建华沈思宇曹颖晶高峰
Owner 感易(上海)传感技术有限公司
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