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Method for realizing noninvasive blood pressure measurement based on Goertzel algorithm

A technology of blood pressure measurement and blood pressure measurement device, which is applied in vascular assessment, cardiac catheterization, etc., can solve the problems of slow measurement speed, poor anti-interference ability, and susceptibility to movement, etc., and achieve the effect of fast measurement and fast measurement speed

Inactive Publication Date: 2012-06-13
深圳市杰纳瑞医疗仪器股份有限公司
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Problems solved by technology

[0009] There are various methods on how to find SP, MP, and DP. The usual waveform analysis algorithms include waveform analysis method, normalization algorithm, etc. The usual algorithms have the following disadvantages: poor anti-interference ability, easy to be affected by motion, measurement The impact of the environment; the measurement speed is slow, and it can only be measured slowly by step deflation; it cannot achieve rapid measurement during the inflation process

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  • Method for realizing noninvasive blood pressure measurement based on Goertzel algorithm
  • Method for realizing noninvasive blood pressure measurement based on Goertzel algorithm
  • Method for realizing noninvasive blood pressure measurement based on Goertzel algorithm

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Embodiment Construction

[0048] In the following, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments, so as to understand the technical idea claimed in the present invention more clearly.

[0049] In this embodiment, the Goertzel algorithm is used to realize the rapid measurement of the non-invasive blood pressure during inflation.

[0050] Simply put, the Goertzel algorithm is in the finite field GF(2 m ) contains 2 m power elements, in GF(2 m ) algorithm for quickly finding the roots of polynomials.

[0051] (A) The frequency of the human pulse wave is generally concentrated in the range of 30 Hz to 75 Hz, which basically conforms to the finite field GF (2 m ) this condition. With the change of pressure, the polynomial and the root of the polynomial will be transformed. Here we don't consider the change of the phase, but only the change of the amplitude, and then we get the specific algorithm of (B).

[0052] (B) The specific im...

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Abstract

The invention relates to a method for realizing noninvasive blood pressure measurement based on Goertzel algorithm. In an inflating process of a blood pressure cuff, by the aid of the Goertzel algorithm, a plurality of corresponding values of energy strength P are calculated according to the frequency fi of each of sample points, the values of the energy strength P are connected to form a fluctuated curve according to a time sequence, the amount of the sample points is M, so that the amount of the fluctuated curves is M, and a perfect fluctuated curve is checked from the M fluctuated curves; and average pressure, contraction pressure and expansion pressure are calculated in the perfect fluctuated curve. In the inflating process of the blood pressure cuff, noninvasive blood pressure measurement is realized, and the method further has the advantages of high interference resistance and fast measurement speed.

Description

technical field [0001] The invention relates to the field of medical electronic instruments, in particular to an electronic system non-invasive blood pressure measurement technology. Background technique [0002] At present, measuring blood pressure with the oscillation method is a method widely used in various electronic sphygmomanometers in clinical practice. [0003] The principle of the oscillation method to measure blood pressure: [0004] Use the cuff to block the arterial blood flow, detect the envelope of the pulsating oscillation wave originating from the vessel wall during the slow deflation process, and find out the inherent relationship between the envelope and arterial blood pressure, and then achieve the purpose of measuring blood pressure. When measuring blood pressure, while the pressure in the air cuff drops due to deflation, there is also a regular oscillation, called pulse wave, whose waveform is as follows figure 1 shown. It can be seen from the figure...

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Application Information

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IPC IPC(8): A61B5/022
Inventor 赵琳
Owner 深圳市杰纳瑞医疗仪器股份有限公司
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