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Method and device for evaluating respiratory airflow stimulating factor during reopening of air passage

A kind of factor, airway technology, applied in the field of evaluation of respiratory airflow stimulation factors when the airway is reopened, can solve the problem of not being able to determine the size of the stimulus required for airway reopening, and achieve the effect of small physiological load

Active Publication Date: 2017-06-30
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the defect that the above titration method in the prior art cannot determine the required stimulus size when the airway is reopened, the present invention provides a method for evaluating the stimulating factors of respiratory airflow when the airway is reopened. Negative pressure changes and extracting the maximum value of blood oxygen drop and the maximum rate of blood oxygen drop in the blood oxygen signal to evaluate negative pressure factor stimulation and chemical factor stimulation, so it is possible to substantially determine the size of the stimulus required for airway reopening

Method used

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  • Method and device for evaluating respiratory airflow stimulating factor during reopening of air passage
  • Method and device for evaluating respiratory airflow stimulating factor during reopening of air passage
  • Method and device for evaluating respiratory airflow stimulating factor during reopening of air passage

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Embodiment 1

[0035] The present invention provides a method for evaluating respiratory airflow stimulating factors when the airway is reopened, such as figure 2 shown, including the following steps:

[0036] S1. Collect the chest belt signal Tho and the abdominal belt signal Abd of the respiratory event when the airway is reopened to calculate the volume change of the lung; the collected chest belt signal Tho and abdominal belt signal Abd are as follows: Figure 4 shown.

[0037] S2. Use the volume change of the lung to calculate the change of lung negative pressure; use the change of lung negative pressure to evaluate the stimulation of negative pressure factors;

[0038] S3. Collect the blood oxygen signal of the respiratory event when the airway is reopened, and calculate the maximum value and maximum drop rate of blood oxygen drop to evaluate the stimulation of chemical factors; the collected blood oxygen signal is as follows: Figure 4 shown

[0039] S4. Negative pressure factor s...

Embodiment 2

[0046] This embodiment provides a device for applying the above method, such as image 3 Shown, the specific scheme of this device is as follows:

[0047] Including thoracic and abdominal belt sensor, oximeter, thoracic and abdominal belt signal processing circuit, blood oxygen signal processing circuit, analog-to-digital conversion module and central processing module;

[0048] The chest belt sensor is used to collect the chest belt signal Tho and the abdominal belt signal Abd of the respiratory event when the airway is reopened;

[0049] The oximeter is used to collect the blood oxygen signal of the respiratory event when the airway is reopened;

[0050] The chest belt signal processing circuit is used to perform signal processing on the collected chest belt signal Tho and the abdominal belt signal Abd, and then transmit the processed signal to the analog-to-digital conversion module for digital conversion;

[0051] The blood oxygen signal processing circuit is used to per...

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Abstract

The invention provides a method for evaluating a respiratory airflow stimulating factor during reopening of an air passage. The method can be applied to electrostimulation and respirator triggering methods for treating SAHS (Sleep Apnea Hypopnea Syndrome) patients and can also be applied to some sleep intervention methods for treating SAHS, for example adjustment on trigger points of sleep postures with pillows. The method comprises the following steps: S1. separately acquiring a breast band signal Tho and an abdominal band signal Abd of a respiration event during the reopening of the air passage, so as to calculate a pulmonary volume change; S2. calculating a pulmonary negative pressure change by using the pulmonary volume change; evaluating negative-pressure factor stimulation by using the pulmonary negative pressure change; S3. acquiring a blood oxygen signal of the respiration event during the reopening of the air passage, and calculating a blood oxygen lowering maximum value and a maximum lowering speed, so as to evaluate chemical factor stimulation; S4. evaluating the size of the respiratory airflow stimulating factor required during the reopening of the air passage by using the negative-pressure factor stimulation and the chemical factor stimulation as joint stimulating factors.

Description

technical field [0001] The invention relates to the field of medical devices, and more specifically, to a method and device for evaluating respiratory airflow stimulation factors when the airway is reopened. Background technique [0002] The incidence of sleep apnea hypopnea syndrome (Sleep Apnea Hypopnea Syndrome, SAHS) has gradually increased in recent years. Sleep apnea-hypopnea syndrome refers to patients with recurrent episodes of apnea more than 30 times per night during sleep or sleep apnea-hypopnea index (AHI) >= 5 times / hour accompanied by clinical symptoms such as lethargy. The symptoms are divided into three types: central (CSAS), obstructive (OSAS) and mixed (MSAS), which cause the patient to snore during sleep with apnea and / or shallow breathing (hypopnea), choking Symptoms such as waking up, excessive sleepiness during the day, and destruction of sleep structure at night may also cause aggravation of pulmonary hypertension, cor pulmonale, respiratory failur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/08
CPCA61B5/0826A61B5/4818
Inventor 罗语溪王婷婷黄少雄曾令紫
Owner SUN YAT SEN UNIV
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