A continuous airway obstruction assessment method and device with low physiological load

An airway obstruction and evaluation device technology, applied in the field of medical devices, can solve the problem of no measurement or quantitative evaluation of airway airway stenosis, and achieve the effect of real-time continuous quantitative evaluation

Active Publication Date: 2018-02-09
SUN YAT SEN UNIV
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Problems solved by technology

However, related applications and research only use these two signals to distinguish between obstructive (OSAS) and central (CSAS) sleep apnea, but there is currently no use of sleep monitoring signals to calculate, measure or quantify airway obstruction or airway narrowing The related application and theoretical research report of the situation

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  • A continuous airway obstruction assessment method and device with low physiological load
  • A continuous airway obstruction assessment method and device with low physiological load
  • A continuous airway obstruction assessment method and device with low physiological load

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0041] The present invention aims at the disadvantages of the existing measurement methods: expensive, invasive or physiological load, can only receive monitoring in the awake state or interfere with the normal sleep state of the subject, etc. Abdominal belt sensor and heat-sensitive airflow sensor can realize night-time measurement, calculate and characterize lung volume changes caused by respiratory movement through chest-abdominal belt signals, and use heat-sensitive mouth and nose airflow sensor signals to characterize the air entering and leaving the respiratory system during breathing Quality, the information of lung volume changes represented by the chest and abdomen belt is used as the abscissa (X axis), and the air quality in and out of the respiratory system represented by the heat-sensitive...

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Abstract

The invention discloses a continuous airway obstruction evaluation method and device with low physiological load. The method includes: using a chest belt sensor to collect a chest belt signal Tho and an abdominal belt signal Abd, and calculating the lung frequency by dVlu,e=1.3Tho+Abd The volume change characterization dVlu,e; the respiratory air quality characterization dmlu,e is collected by the thermal mouth and nose airflow sensor; the two-dimensional map of dVlu,e and dmlu,e is used to obtain the airway stenosis and obstruction related to the respiratory phase Situation information; do correlation calculation with dVlu,e and dmlu,e, the value of the linear correlation coefficient indicates the degree of airway obstruction or stenosis; chest belt signal Tho and abdominal belt signal Abd increase during inhalation, dmlu,e increase with gas. The invention has the characteristics of low cost, small physiological load and long-term continuous monitoring, and can quantitatively evaluate the airway obstruction and airway stenosis degree of the user in the natural sleep state.

Description

technical field [0001] The present invention relates to the field of medical devices, and more specifically, to a low physiological load continuous airway obstruction assessment method and device. Background technique [0002] Sleep apnea hypopnea syndrome (Sleep Apnea Hypopnea Syndrome, SAHS) has gradually increased in recent years, which refers to recurrent episodes of apnea more than 30 times during sleep every night or Sleep Apnea Hypopnea Index (AHI)>=5 times / hour with clinical symptoms such as drowsiness. The symptoms are divided into three types: central type (CSAS), obstructive type (OSAS) and mixed type (MSAS). Symptoms such as waking up, excessive sleepiness during the day, and disruption of nighttime sleep structure may also cause or aggravate pulmonary hypertension, cor pulmonale, respiratory failure, hypertension, arrhythmia, stroke and other diseases. SAHS has greatly affected the quality of life of patients, and has been gradually recognized and valued ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/08A61B5/053
Inventor 罗语溪黎啦啦颜佳
Owner SUN YAT SEN UNIV
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