Non-invasive arterial blood pressure waveform calculation method

A technology of arterial blood pressure and calculation method, which is applied in blood pressure measurement devices, acoustic wave diagnosis, infrasound wave diagnosis, etc., can solve the problems of adjacent tissue damage, unfavorable routine use, increased possibility of infection, etc., and achieves the effect of simple operation and convenient use.

Pending Publication Date: 2021-08-06
RES INST OF NANJING RUNNAN MEDICAL ELECTRONICS CO LTD +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Complete arterial blood pressure waveforms can only be obtained through arterial cannulation in the intensive care unit (ICU), although it is a gold standard, but its invasiveness inevitably increases the possibility of infection and damage to adjacent tissues, which is not conducive to routine use

Method used

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  • Non-invasive arterial blood pressure waveform calculation method
  • Non-invasive arterial blood pressure waveform calculation method
  • Non-invasive arterial blood pressure waveform calculation method

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Embodiment Construction

[0023] The technical solution of the present invention will be explained more clearly and completely through the description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, a non-invasive arterial blood pressure waveform calculation method of the preferred embodiment of the present invention includes the following steps,

[0025] S100: placing two ultrasonic transducers, one of which is perpendicular to the arterial artery, and the other ultrasonic transducer is set at an included angle with the arterial artery.

[0026] Both ultrasonic transducers are placed outside the body, so there is no wound damage to the patient. The included angles between the two ultrasonic transducers and the arterial artery are 90 degrees and 50 degrees respectively. The ultrasonic transducer at 90 degrees to the artery is used to measure the diameter of the artery, and the ultrasonic transducer at 50 degrees to t...

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Abstract

The invention provides a non-invasive arterial blood pressure waveform calculation method which comprises the following steps: S100: placing two ultrasonic transducers, wherein one ultrasonic transducer is perpendicular to an arterial blood vessel, and the other ultrasonic transducer and the arterial blood vessel are arranged at an included angle; S101: transmitting and receiving ultrasonic signals by two ultrasonic transducers, and carrying out high-frequency sampling on the received ultrasonic signals; S102: carrying out band-pass filtering on the ultrasonic signals acquired by the two ultrasonic transducers, carrying out Hilbert transformation on the filtered signals, and converting the signals into complex signals; S103: calculating a cross sectional area of the artery by using the ultrasonic signal received by the ultrasonic transducer perpendicular to the artery blood vessel; S104: calculating flow of the arterial blood by using the ultrasonic signal received by the ultrasonic transducer which forms the included angle with the arterial blood vessel; S105: calculating a pulse wave speed through a flow area method; and S106: calculating an arterial blood pressure waveform. By the method, the blood pressure waveform of the artery of a patient can be obtained in anon-invasive mode.

Description

technical field [0001] The invention relates to the field of blood pressure waveform calculation methods, in particular to a non-invasive arterial blood pressure waveform calculation method. Background technique [0002] Arterial blood pressure (ABP) waveform contains a large amount of information for the diagnosis and treatment of cardiovascular diseases (CVDs), which is of great significance to clinical diagnosis and treatment of diseases. [0003] Clinically, blood pressure is measured by auscultatory method or oscillometric method by sphygmomanometer. Since this method only produces a set of systolic and diastolic blood pressure over multiple heartbeat cycles, it is a highly undersampled measurement, so this method is not sufficient. Represents the dynamic behavior of the human arterial system. On the other hand, the ambulatory blood pressure waveform shows systolic blood pressure, diastolic blood pressure and mean arterial pressure and their changes every beat. The pul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/04A61B8/00
CPCA61B8/04A61B8/52
Inventor 方震于娴雅赵荣建何光强
Owner RES INST OF NANJING RUNNAN MEDICAL ELECTRONICS CO LTD
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