JPH0249098B2 - - Google Patents
Info
- Publication number
- JPH0249098B2 JPH0249098B2 JP59024250A JP2425084A JPH0249098B2 JP H0249098 B2 JPH0249098 B2 JP H0249098B2 JP 59024250 A JP59024250 A JP 59024250A JP 2425084 A JP2425084 A JP 2425084A JP H0249098 B2 JPH0249098 B2 JP H0249098B2
- Authority
- JP
- Japan
- Prior art keywords
- flow velocity
- differential pressure
- nasal
- storage means
- data storage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000003928 nasal cavity Anatomy 0.000 claims description 9
- 230000035699 permeability Effects 0.000 claims description 8
- 238000013500 data storage Methods 0.000 claims 4
- 238000004364 calculation method Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 206010028735 Nasal congestion Diseases 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000002651 drug therapy Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000000004 hemodynamic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 230000010352 nasal breathing Effects 0.000 description 1
- 210000002850 nasal mucosa Anatomy 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 210000003300 oropharynx Anatomy 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Description
【発明の詳細な説明】
本発明は鼻腔通気度を測定する鼻腔通気度計に
用いられるデータ処理装置に関するものである。
鼻腔通気度の測定は、鼻呼吸障害（鼻閉）の程
度診断とその治療法の選択、下気道との関連性の
研究、鼻粘膜の血行動態や病態の観察、アレルギ
ー誘発反応判定、鼻閉に対する薬物療法や手術の
効果判定等に用いられ、その有用性は極めて高
い。
鼻腔通気度を表現するための測定パラメータと
しては、鼻腔両端間の差圧Ｐ、鼻腔内を流れる気
量Ｖ、一定気量を流すに要する時間Ｔ、単位時間
当りの気量すなわち流速Ｖなどがある。そして鼻
腔通気度は、上記パラメータの値個々で表現され
る場合と、上記パラメータ相互の関連で表現され
る場合とがある。現在は後者が用いられており、
その基本は差圧・流速曲線（rhinorheogramとい
う）である。この曲線から鼻腔通気度を表現する
いくつかの方法がある。例を示すと以下の様であ
る。
Rohrerの実験式 Ｐ＝K1V〓＋K2V〓2：Rohrer
が気道実験から導いた式で、鼻腔内気流は乱流
混在のため差圧Ｐは流速V〓の二次式で表現され
るというものである。K1（層流係数）とK2（乱
流係数）は上記差圧・流速曲線から計算で求め
られる。
抵抗Ｒ：気道に単位流速で空気を流すに要す
る力であり、Ｒ＝Ｐ／Ｖとして表現される。こ
の場合値が大きくなるほど通気度は悪くなる。
しかも上記Rohrerの式からＲ＝Ｐ／V〓＝K1＋
K2Vとなり、流速V〓が増すにつれて抵抗Ｒも大
となる。
通気度コンダクタンスＧ：抵抗Ｒの逆数であ
り、Ｇ＝V〓／Ｐとして表現され、単位時間に単
位駆動力で流れる気量を示す。
鼻腔通気度を表現するためには上述したよう
に差圧Ｐおよび流速V〓を検出する必要がある。
このような差圧Ｐおよび流速V〓を検出する方法
について以下に述べる。
総合通気度測定法：第１図に示すように測定
管１を接続したマスク２を被検者の顔面に密着
させ、口腔内に誘導管３を挿入して歯列と口唇
で保持させる。測定管１の内部には抵抗値が既
知である抵抗体４が設けられている。流速検出
器５は抵抗体４に沿つた２点の差圧から流速を
検出するようになつている。一方差圧検出器６
は誘導管３と測定管１とに接続され被検者の外
鼻孔・中咽頭間の差圧を検出するようになつて
いる。このような器具を装着した状態で、被検
者に安静鼻呼吸をさせれば、鼻腔通気度測定に
必要な差圧Ｐおよび流速V〓が得られる。
片側通気度測定法：被検者の左右の鼻腔のい
ずれか一方を測定する方法で、ポステリオール
（posterior）法とアンテリオール（anterior）
法とに分けられる。
○
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data processing device used in a nasal air permeability meter that measures nasal air permeability. Measuring nasal airflow is useful for diagnosing the degree of nasal breathing disorder (nasal congestion) and selecting its treatment, studying the relationship with the lower respiratory tract, observing the hemodynamics and pathology of the nasal mucosa, determining allergic reactions, and nasal congestion. It is used to evaluate the effectiveness of drug therapy and surgery, and its usefulness is extremely high. Measurement parameters to express the nasal airflow rate include the differential pressure P between the two ends of the nasal cavity, the amount of air flowing inside the nasal cavity V, the time T required to flow a constant amount of air, and the amount of air per unit time, that is, the flow velocity V. be. The nasal airflow rate may be expressed by the individual values of the above parameters, or may be expressed by the relationship between the above parameters. Currently, the latter is used,
Its basis is the differential pressure/flow velocity curve (referred to as rhinorheogram). There are several ways to express the nasal airflow rate from this curve. An example is shown below. Rohrer's empirical formula P=K 1 V〓＋K 2 V〓 2 :Rohrer
is a formula derived from airway experiments, and because intranasal airflow is mixed with turbulence, the differential pressure P is expressed by a quadratic formula of the flow velocity V〓. K 1 (laminar flow coefficient) and K 2 (turbulent flow coefficient) are calculated from the above differential pressure/flow velocity curve. Resistance R: It is the force required to flow air at a unit flow rate through the airway, and is expressed as R=P/V. In this case, the larger the value, the worse the air permeability becomes.
Moreover, from the above Rohrer equation, R=P/V〓=K 1 +
K 2 V, and as the flow velocity V〓 increases, the resistance R also increases. Air permeability conductance G: It is the reciprocal of the resistance R, expressed as G=V〓/P, and indicates the amount of air flowing with a unit driving force per unit time. In order to express the nasal ventilation rate, it is necessary to detect the differential pressure P and the flow velocity V as described above.
A method for detecting such differential pressure P and flow velocity V is described below. Comprehensive air permeability measurement method: As shown in FIG. 1, a mask 2 to which a measuring tube 1 is connected is brought into close contact with the subject's face, a guide tube 3 is inserted into the oral cavity, and the mask is held between the teeth and lips. A resistor 4 whose resistance value is known is provided inside the measuring tube 1. The flow velocity detector 5 detects the flow velocity from the differential pressure at two points along the resistor 4. On the other hand, differential pressure detector 6
is connected to the guide tube 3 and the measuring tube 1 to detect the differential pressure between the external nostril and oropharynx of the subject. If the subject is allowed to breathe through the nose while wearing such an instrument, the differential pressure P and flow velocity V 〓 necessary for measuring the nasal air permeability can be obtained. Unilateral air permeability measurement method: A method that measures either the left or right nasal cavity of the subject, and includes the posterior method and the anterior method.
It is divided into law and law. ○…
Claims (1)
た差圧データをその差圧が測定された時間に対応
させて記憶する差圧データ記憶手段と、前記被検
者の左右夫々の鼻腔内における流速に応じた流速
データをその流速が測定された時間に対応させて
記憶する流速データ記憶手段と、前記差圧データ
記憶手段および前記流速データ記憶手段夫々が記
憶しているデータに基づき左右夫々の鼻腔につい
て同一の所定の差圧における左右夫々の鼻腔内の
流速を補間計算する補間計算手段と、該補間計算
手段の計算結果に基づいて前記所定の差圧に対応
する左鼻腔内の流速と右鼻腔内の流速とを加算す
る加算手段と、該加算手段の加算結果に基づくデ
ータ処理を行なうデータ処理手段とを具備するこ
とを特徴とする鼻腔通気度測定用データ処理装
置。1. Differential pressure data storage means for storing differential pressure data corresponding to the differential pressure between the front and rear nasal cavities of the left and right nasal cavities of the subject, respectively, in correspondence with the time when the differential pressure was measured; flow velocity data storage means for storing flow velocity data corresponding to the flow velocity in the nasal cavity in correspondence with the time at which the flow velocity was measured; and based on data stored in each of the differential pressure data storage means and the flow velocity data storage means. interpolation calculation means for interpolating the flow velocity in the left and right nasal cavities at the same predetermined differential pressure for each of the left and right nasal cavities; 1. A data processing device for measuring nasal air permeability, comprising an adding means for adding a flow velocity and a flow velocity in the right nasal cavity, and a data processing means for performing data processing based on the addition result of the adding means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2425084A JPS60168433A (en) | 1984-02-14 | 1984-02-14 | Data processing apparatus for measuring nasal cavity ventilation degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2425084A JPS60168433A (en) | 1984-02-14 | 1984-02-14 | Data processing apparatus for measuring nasal cavity ventilation degree |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60168433A JPS60168433A (en) | 1985-08-31 |
| JPH0249098B2 true JPH0249098B2 (en) | 1990-10-29 |
Family
ID=12132994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2425084A Granted JPS60168433A (en) | 1984-02-14 | 1984-02-14 | Data processing apparatus for measuring nasal cavity ventilation degree |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60168433A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2602025B2 (en) * | 1987-07-01 | 1997-04-23 | 株式会社山口薬品商会 | Nasal cavity inspection device |
| US6544192B2 (en) | 1998-02-25 | 2003-04-08 | Respironics, Inc. | Patient monitor and method of using same |
| US6017315A (en) * | 1998-02-25 | 2000-01-25 | Respironics, Inc. | Patient monitor and method of using same |
| JP4919627B2 (en) * | 2005-07-25 | 2012-04-18 | ミナト医科学株式会社 | Lung function testing device |
| JP4925073B2 (en) * | 2011-04-28 | 2012-04-25 | ミナト医科学株式会社 | Lung function testing device |
| JP7235277B2 (en) * | 2018-08-30 | 2023-03-08 | 株式会社フクダ産業 | Nasal resistance measuring device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5755135A (en) * | 1980-09-20 | 1982-04-01 | Chest Corp | Apparatus for measuring nasal cavity resistance |
-
1984
- 1984-02-14 JP JP2425084A patent/JPS60168433A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5755135A (en) * | 1980-09-20 | 1982-04-01 | Chest Corp | Apparatus for measuring nasal cavity resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60168433A (en) | 1985-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |