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Apparatus for determining respiratory condition

A breathing state and state technology, applied in the direction of respirator, evaluation of respiratory organs, application, etc., can solve problems such as burden, heavy burden, imposition, etc., and achieve the effect of reducing annoyance and burden

Active Publication Date: 2013-12-18
NIHON KOHDEN CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Attaching various sensors to the body for detecting the state of apnea / hypopnea during sleep imposes a large burden on the subject
On the other hand, based on the work of visually judging the presence of inspiratory flow limitation and judging the type of apnea / hypopnea state by using a large number of measurement signal waveforms acquired from the subject's respiration by measuring overnight, the person performing the diagnosis pose a great burden
In the case of judgment based on visual observation, it is difficult to eliminate differences in judgment due to observer's subjectivity and experience

Method used

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  • Apparatus for determining respiratory condition
  • Apparatus for determining respiratory condition
  • Apparatus for determining respiratory condition

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Embodiment Construction

[0020] Hereinafter, embodiments of the subject matter disclosed by the present invention will be described in detail with reference to the accompanying drawings.

[0021] figure 1 It is a functional block diagram showing the configuration of a monitoring device 10 as a device for determining a breathing state according to an embodiment of the subject matter disclosed in the present invention. The monitoring device 10 includes: a signal capturer 11, a high frequency filter 12, a controller 13 and a display 14.

[0022] The nasal catheter 21 is a device in which a pair of tube parts are to be inserted into the nostrils of the subject to guide the nasal breathing gas of the subject to the pressure sensor 23 via the tube 22. The pressure sensor 23 measures the pressure change caused by the subject’s breathing, and outputs a measurement signal having a waveform corresponding to the subject’s breathing state (respiratory pressure) (in the following description, the signal is only referre...

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Abstract

The present invention provides an apparatus for determining a respiratory condition, wherein the apparatus includes:a signal acquirer which is configured to acquire a signal waveform corresponding to a respiratory flow of a subject; a differential calculator which is configured to acquire a differential waveform which is obtained by performing differentiation of the signal waveform; and a first determiner which is configured to determine that inspiratory flow limitation occurs in the subject, when the differential waveform satisfies a predetermined condition in a portion of the signal waveform, which corresponds to inspiration of the subject.

Description

[0001] Cross references to related applications [0002] This application is based on the prior Japanese Patent Application No. 2012-123248 filed on May 30, 2012 and claims its priority benefit, and the entire content of the patent application is incorporated herein by reference. Technical field [0003] The subject matter disclosed in the present invention relates to an apparatus for determining the existence of restriction of inspiratory flow rate known as a symptom of sleep disorder based on the breathing of a subject and determining the type of apnea / hypopnea state. Background technique [0004] As this type of device, there is a device in which a signal waveform corresponding to the breathing state of the subject is acquired overnight, and from the shape of the waveform signal, it is visually determined that the inspiratory flow rate is limited. Exist (see, for example, US Patent No. 7,325,545). [0005] As disclosed in Japanese Patent No. 4,588,461, a belt-shaped strain gauge i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/08
CPCA61B5/0826A61B5/4818A61M2016/0027A61M2205/502A61M16/0672A61M16/021A61B5/087A61B5/7239A61B5/742
Inventor 野中幸夫磯野史朗清水刚
Owner NIHON KOHDEN CORP
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