A pump speed automatic adjustment method and device for boosting blood pressure measurement
An automatic adjustment and blood pressure measurement technology, which is applied in the field of medical instruments, can solve the problems of long inflation process, increased discomfort of the measured person, and reduced inflation volume.
Active Publication Date: 2018-08-28
XI AN JIAOTONG UNIV
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Problems solved by technology
A larger size cuff is required to measure the blood pressure of an obese subject by boost measurement. If the pre-fixed inflation volume is maintained, the inflation process will be too long, which will increase the discomfort of the subject. In this case, just It is required to increase the inflation volume of the measurement process; while using a small size cuff (such as children), the inflation volume should be reduced
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[0020] The principle of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] The oscillometric blood pressure measurement usually uses a curve fitting algorithm and cooperates with the amplitude coefficient to calculate the blood pressure value. In order to ensure the measurement accuracy, it is required to include an appropriate number of pulsation cycles that can be detected in one blood pressure measurement. If the pulsation cycle is too small, it will be serious. Affects the measurement accuracy, but too much can not bring substantial improvement to the measurement accuracy. On the contrary, because the measurement time is too long, the discomfort of the measured person will increase. Generally, about ten pulsation cycles are appropriate. In order to balance measurement accuracy and comfort, the inflation volume should be increased when using a large size cuff (such as obese patients), and the inflation volume shoul...
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A pump speed automatic adjustment method and device for boosting blood pressure measurement. According to the shock wave extracted from the cuff pressure, the pulsation detection is performed, and the average pulse rate is calculated based on this; the cuff pressure change value within a certain period of time is measured. , through the change of cuff pressure to indirectly reflect the current air pump inflation; according to the obtained average pulse rate and cuff pressure change value dynamics, automatically adjust the driving voltage of the air pump, and then achieve the purpose of adjusting the inflation; optimize the measurement process and also develop An automatic blood pressure measurement device with better comfort, including a pressure sensor, a pulsation detection circuit and a processor; according to the cuff static pressure signal collected by the pressure sensor and the pulse rate calculated by interrupting the pulsation detection circuit (106), the processor utilizes A method for automatically adjusting pump speed for boosting blood pressure measurement adjusts the driving voltage of an air pump (102) in real time. The invention is not affected by the size of the cuff and can adjust the measurement process in real time according to the pulse rate of the measured person.
Description
technical field [0001] The invention belongs to the technical field of medical instruments, in particular to a pump speed automatic adjustment method and device for boosting blood pressure measurement based on cuff pressure changes and real-time pulse rate detection during inflation. Background technique [0002] Blood pressure is an important indicator of physiological parameters such as cardiac pumping function, vascular resistance, blood viscosity and systemic blood volume, and has important clinical diagnostic value. With the development of electronic technology, computer and signal processing, automatic non-invasive blood pressure monitoring technology based on oscillometric method has been widely used clinically. Oscillometric blood pressure measurement can adopt two modes: buck measurement and boost measurement. The blood pressure measurement includes two stages of inflation and deflation. First, the cuff is inflated until the artery is closed, and then during the de...
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IPC IPC(8): A61B5/0225
Inventor 闫相国吴宁王刚郑崇勋
Owner XI AN JIAOTONG UNIV