Automatic pump speed adjusting method for pressure increasing type blood pressure measurement and device
An automatic adjustment and blood pressure measurement technology, applied in the field of medical instruments, can solve the problems of long inflation process, reduced inflation volume, increased discomfort of the measured person, etc.
Active Publication Date: 2016-02-03
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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The invention discloses an automatic pump speed adjusting method for pressure increasing type blood pressure measurement and a device. The method includes the steps that pulsation detection is performed according to shock waves extracted from cuff pressure, and the average pulse rate is calculated based on the pulsation detection result; the cuff pressure change value generated within a certain time interval is measured, and the current air charge quantity of an air pump is indirectly reflected through cuff pressure changing; the driving voltage of the air pump is automatically adjusted according to the obtained average pulse rate and the dynamic cuff pressure change value, and thus the purpose of adjusting the air charge quantity is achieved. The automatic blood measurement device with better comfort is further developed in the measurement optimization process and comprises a pressure sensor, a pulsation detection circuit and a processor. According to cuff static pressure signals collected by the pressure sensor and the pulse rate calculated through the pulsation detection circuit (106) in an interrupted mode, the processor adjusts the driving voltage of the air pump (102) in real time through the automatic pump speed adjusting method for pressure increasing type blood pressure measurement. The method and the device are not influenced by the cuff size, and the measurement process can be adjusted in real time according to the pulse rate of a 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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Inventor 闫相国吴宁王刚郑崇勋
Owner XI AN JIAOTONG UNIV