Obstructive sleep apnea-hypopnea syndrome screening method and device thereof

A technology for sleep apnea and hypopnea, applied in medical science, sensors, diagnostic recording/measurement, etc.

Active Publication Date: 2013-11-06
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the influence of individual differences in the existing methods, the present invention provides a non-contact, simple, reliable, obstructive sleep apnea hypopnea syndrome screening device and method that excludes individual differences

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  • Obstructive sleep apnea-hypopnea syndrome screening method and device thereof
  • Obstructive sleep apnea-hypopnea syndrome screening method and device thereof
  • Obstructive sleep apnea-hypopnea syndrome screening method and device thereof

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Embodiment Construction

[0049] In the OSAHS screening system, for a specific OSAHS snorer, the state of the upper airway is different when producing normal snoring and abnormal snoring, and the upper airway is in an obstructed state when producing abnormal snoring. The corresponding frequency distribution ranges of the first formant parameters reflecting the width of the upper airway are also different. According to this characteristic of the formant parameter, a normal snoring segment can be distinguished from an abnormal snoring segment by setting a formant threshold. Simply put, a formant threshold is used to distinguish the first formant frequency of normal snoring and abnormal snoring, so as to achieve the purpose of distinguishing two different snoring sounds. For normal snoring, the first formant frequency is at a lower level For the abnormal snoring sound segment, its first formant frequency is in a higher frequency band, so the difference between the first formant frequency of the two can be...

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Abstract

The invention relates to an obstructive sleep apnea-hypopnea syndrome (OSAHS) screening method and a device. Formant characteristics of snore are adopted as technical indexes for screening OSAHS; Snore sections are extracted by a short-time energy method at first, then LPC (linear predictive coding) is used for modeling, after predicting factors of the LPC are obtained, a first formant frequency of each snore section is obtained by a root extraction method, as ranges of formant frequencies of different modes are different, the different snore sections can be distinguished, all first formant frequencies of all snorers are classified, by the aid of K mean values, and thresholds for distinguishing normal snore and abnormal snore of individuals are determined according to classified results; and then AHI (apnea-hypopnea indexes) in a PSG (polysomnogram) are simulated so that average times of apnea and hypopnea of the snorers within an hour are obtained. According to the OSAHS judgment standard, whether the data section has snore of a normal person or snore of a patient with the OSAHS is judged. The obstruction sleep apnea-hypopnea syndrome screening method and the device are low in cost, high in applicability and simple in operation and are non-contacting.

Description

technical field [0001] The invention uses computer measurement technology to screen sleep apnea hypopnea syndrome, and relates to a non-contact obstructive sleep apnea hypopnea syndrome screening device and a method thereof. Background technique [0002] Obstructive Sleep Apnea Hypopnea Syndrome (OSAHS) is a high-incidence disease with serious harm and potential danger. Due to the occurrence of hypoxia and hypercapnia during sleep, it will eventually cause multi-system, Progressive damage to multiple organs. [0003] The most common symptom of OSAHS is snoring, which is manifested as high and low snoring, which can be completely interrupted, and severe patients can wake up. After waking up, there may be palpitation, heart palpitations, breathlessness, etc. Roommates can observe that with the cessation of snoring, there is an obvious pause in the patient's breathing, and the apnea is terminated with a deep inhalation, followed by a louder snoring sound. As the disease prog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00
Inventor 刘文龙赵玉霞张海秀
Owner DALIAN UNIV OF TECH
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