JPH0262266B2 - - Google Patents
Info
- Publication number
- JPH0262266B2 JPH0262266B2 JP60115271A JP11527185A JPH0262266B2 JP H0262266 B2 JPH0262266 B2 JP H0262266B2 JP 60115271 A JP60115271 A JP 60115271A JP 11527185 A JP11527185 A JP 11527185A JP H0262266 B2 JPH0262266 B2 JP H0262266B2
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- nasal
- gas
- insertion tube
- nasal cavity
- 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
- 239000007789 gas Substances 0.000 claims description 66
- 210000003928 nasal cavity Anatomy 0.000 claims description 54
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 50
- 239000001301 oxygen Substances 0.000 claims description 50
- 229910052760 oxygen Inorganic materials 0.000 claims description 50
- 238000003780 insertion Methods 0.000 claims description 49
- 230000037431 insertion Effects 0.000 claims description 49
- 239000006185 dispersion Substances 0.000 claims description 7
- 239000003463 adsorbent Substances 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 230000001954 sterilising effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 238000002640 oxygen therapy Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 208000023504 respiratory system disease Diseases 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Description
【発明の詳細な説明】
＜利用分野＞
本発明は、酸素富化空気や酸素等の気体を鼻孔
に供給するための鼻カニユーラに関する。さらに
詳細には、特定の鼻腔挿入管を具備した改良され
た鼻カニユーラを提供するものである。DETAILED DESCRIPTION OF THE INVENTION <Field of Application> The present invention relates to a nasal cannula for supplying a gas such as oxygen-enriched air or oxygen to the nostrils. More particularly, an improved nasal cannula with a specific nasal insertion tube is provided.
＜従来技術＞
従来、呼吸器疾患患者に対して酸素ボンベや液
体酸素等から酸素を供給する酸素療法が行われて
おり、最近では空気中の酸素を濃縮して得られた
酸素富化空気を使用した酸素療法が開発されるこ
とによつてその治療法が次第に普及するようにな
つて来ている。<Prior art> Oxygen therapy, which supplies oxygen from oxygen cylinders or liquid oxygen, has traditionally been used for patients with respiratory diseases.Recently, oxygen-enriched air obtained by concentrating oxygen in the air With the development of oxygen therapy, the treatment has become increasingly popular.
これらの酸素療法で酸素や酸素富化空気などの
気体を患者に供給するのに、供給源からの該気体
の流入管と該気体流出用の鼻腔挿入管を具備した
鼻カニユーラが一般に使用されている。かかる鼻
カニユーラにおける鼻腔挿入管は、各々の鼻腔に
挿入される２本のチユーブからなつている。即ち
鼻腔挿入管は単なる直線状のチユーブからなるも
のであつて、特に流入管に流入し該鼻腔挿入管か
ら流出する気体の流量が大きくなつた場合等に、
患者の鼻腔内に対してその気体全体による動圧が
加わり鼻腔奥に不快な刺激を与えたり排気時の抵
抗が大きくなるなどして、患者に苦痛を与えやす
いという欠点があつた。 In these oxygen therapies, a nasal cannula with an inflow tube for the gas from a source and a nasal insertion tube for the outflow of the gas is commonly used to supply a gas such as oxygen or oxygen-enriched air to the patient. There is. The nasal cavity insertion tube in such a nasal cannula consists of two tubes inserted into each nasal cavity. That is, the nasal cavity insertion tube consists of a simple straight tube, and especially when the flow rate of gas flowing into the inflow tube and flowing out from the nasal cavity insertion tube becomes large,
This method has the drawback that the dynamic pressure of the entire gas is applied to the inside of the patient's nasal cavity, causing unpleasant irritation to the back of the nasal cavity and increasing resistance during evacuation, which tends to cause pain to the patient.
特に酸素富化空気を用いる場合には、比較的大
きな流量の酸素富化空気を必要とするケースが多
く、上記の如き欠点を有した鼻カニユーラの改良
が強く望まれていた。 In particular, when using oxygen-enriched air, there are many cases where a relatively large flow rate of oxygen-enriched air is required, and there has been a strong desire to improve the nasal cannula, which has the above-mentioned drawbacks.
＜発明の目的＞
本発明は、これらの欠点をなくした優れた鼻カ
ニユーラを提供するものである。特に鼻腔挿入管
の構造を改良することによつて、気体の流量が大
きくなつてもそれを使用する患者に与える苦痛を
最小限におさえることのできる鼻カニユーラを提
供することを目的とする。<Object of the Invention> The present invention provides an excellent nasal cannula that eliminates these drawbacks. The purpose of the present invention is to provide a nasal cannula that can minimize pain to a patient using the cannula even when the flow rate of gas increases, especially by improving the structure of the nasal cavity insertion tube.
＜発明の構成＞
本発明者らは、鼻カニユーラにおいて気体の流
量が大きくなつた場合の鼻腔内に挿入された状態
の鼻腔挿入管における気体の流動状態について鋭
意研究したところ、呼吸の吸入時における吸入量
に比較し過剰の気体が流入した場合のその過剰の
気体が鼻腔の軸方向に沿つて直線的に流入させな
いことが非常に有効であることを見い出し本発明
に到達した。<Structure of the Invention> The present inventors conducted extensive research on the gas flow state in the nasal cavity insertion tube inserted into the nasal cavity when the gas flow rate increases in the nasal cannula, and found that The inventors have discovered that it is very effective to prevent the excess gas from flowing linearly along the axial direction of the nasal cavity when an excess amount of gas flows in compared to the amount of inhalation, and has thus arrived at the present invention.
即ち本発明は、気体の流入管と気体流出用鼻腔
挿入管を具備した鼻カニユーラにおいて、該鼻腔
挿入管から流出する気体の少なくとも一部が、該
鼻腔挿入管先端部の軸方向に対して角度を有する
方向に流れるための分散手段を該鼻腔挿入管に具
備せしめたことを特徴とする鼻カニユーラ；及び
空気を流入する手段、該流入空気の酸素濃度を高
める手段、得られた酸素富化空気を取出す手段、
取出した酸素富化空気を使用に供する供給手段を
有した酸素富化装置において、該供給手段の先端
に、該酸素富化空気の流入管と該酸素富化空気流
出用鼻腔挿入管を具備し該鼻腔挿入管から流出す
る該酸素富化空気の少なくとも一部が該鼻腔挿入
管先端部の軸方向に対して角度を有する方向に流
れるための分散手段を該鼻腔挿入管に具備せしめ
た鼻カニユーラを有したことを特徴とした酸素富
化装置を提供するものである。 That is, the present invention provides a nasal cannula equipped with a gas inflow tube and a nasal cavity insertion tube for gas outflow, in which at least a portion of the gas flowing out from the nasal cavity insertion tube is at an angle with respect to the axial direction of the distal end of the nasal cavity insertion tube. a nasal cannula, characterized in that the nasal cavity insertion tube is equipped with a dispersion means for flowing in a direction having a direction of means for taking out the
An oxygen enrichment device having a supply means for using the extracted oxygen-enriched air, the supply means having an inflow pipe for the oxygen-enriched air and a nasal cavity insertion pipe for the outflow of the oxygen-enriched air at the tip of the supply means. A nasal cannula, wherein the nasal cavity insertion tube is provided with a dispersion means for causing at least a portion of the oxygen-enriched air flowing out of the nasal cavity insertion tube to flow in a direction at an angle with respect to the axial direction of the distal end of the nasal cavity insertion tube. The present invention provides an oxygen enrichment device characterized by having the following features.
以下本発明について図面を用いてさらに詳細に
説明する。本発明における鼻カニユーラは、第１
図において例示するように気体流入管２，２′と
鼻腔挿入管１，１′を具備するものであつて、そ
の鼻腔挿入管から流出する気体の少なくとも一部
がその軸方向に対して角度を有すること、即ち鼻
腔挿入管の軸方向以外の方向にも気体が流出する
ことを特徴とするものである。 The present invention will be explained in more detail below with reference to the drawings. The nasal cannula in the present invention includes the first
As illustrated in the figure, it is equipped with gas inflow tubes 2, 2' and nasal cavity insertion tubes 1, 1', and at least a part of the gas flowing out from the nasal cavity insertion tube is at an angle with respect to the axial direction. In other words, gas flows out in directions other than the axial direction of the nasal cavity insertion tube.
かかる鼻腔挿入管としては先端部における気体
流出口以外にも流出口を有するものが挙げられ
る。その具体的な構造としては、例えば第２図に
示す如く該管壁において気体流出口３を有するも
のが挙げられる。尚この気体流出口３の形状とし
ては、円形だけでなくスリツト状、矩形状等のい
かなるものであつてもよい。また鼻腔挿入管の他
の例として、第３図に示す如く該管の先端から切
欠部４を設けたものや、第４図に示す如く網状の
管壁５からなる鼻腔挿入管が挙げられる。さらに
第５図の断面図において示す如く、先端部の気体
流出口６以外にそれと反対方向への流出口８を有
したものが挙げられる。 Such nasal cavity insertion tubes include those having an outlet in addition to the gas outlet at the distal end. As a specific structure thereof, for example, as shown in FIG. 2, there may be mentioned one having a gas outlet 3 in the tube wall. The shape of the gas outlet 3 may be not only circular but also slit-shaped, rectangular, etc. Other examples of nasal cavity insertion tubes include one in which a notch 4 is provided from the distal end of the tube as shown in FIG. 3, and a nasal cavity insertion tube made of a mesh-like tube wall 5 as shown in FIG. Furthermore, as shown in the sectional view of FIG. 5, there is a device having, in addition to the gas outlet 6 at the tip, an outlet 8 in the opposite direction.
先端部の気体流出口以外に流出口を有した鼻腔
挿入管は、上記のものに限られるものではなくい
かなるものであつてもよい。またこれらの鼻腔挿
入管における先端部以外の気体流出口の開口度
や、該挿入管の長さ、管径、管の断面形状につい
ても特に限定されるものではなく、適宜選択する
ことができる。なかでも、該管の断面形状として
は、鼻腔の形状に対応した湾曲状又は偏平状であ
ることが好ましい。また該先端部以外の気体流出
口の開口度としては、該鼻腔挿入管を鼻腔内に設
置して使用した状態で患者の吸入気体流量の最大
値以上の気体が該鼻カニユーラに流入した場合
に、少なくともその過剰の気体の一部が、更に好
ましくはその過剰気体の大半がその先端部以外の
流出口から流出し得るようにすることが望まし
い。 The nasal cavity insertion tube having an outlet other than the gas outlet at the distal end is not limited to the one described above, and may be of any type. Furthermore, the degree of opening of the gas outlet other than the tip of these nasal cavity insertion tubes, the length, diameter, and cross-sectional shape of the insertion tubes are not particularly limited and can be selected as appropriate. Among these, the cross-sectional shape of the tube is preferably curved or flat, corresponding to the shape of the nasal cavity. In addition, the degree of opening of the gas outlet other than the tip is such that when the nasal insertion tube is installed and used in the nasal cavity, and gas that exceeds the maximum value of the patient's inhaled gas flow rate flows into the nasal cannula. It is desirable that at least a portion of the excess gas, and more preferably a majority of the excess gas, be able to exit through an outlet other than the tip.
また本発明の鼻カニユーラにおける鼻腔挿入管
のもう１つの好ましい態様として、該鼻腔挿入管
から流出する気体の少なくとも一部が螺旋状に流
れるようにしたものが挙げられる。その螺旋状に
気体が流出する位置は該鼻腔挿入管先端のみであ
つてもよいが、場合によつては先端以外の部分に
あつてもよい。また螺旋状に流出する気体は、該
鼻カニユーラから流出する気体の大半であること
が好ましい。かかる螺旋状に気体を流出させる具
体的な構造として、例えば鼻腔挿入管の内壁に螺
旋状の突起を具備せしめたものが挙げられる。 Another preferred embodiment of the nasal cavity insertion tube in the nasal cannula of the present invention is one in which at least a portion of the gas flowing out from the nasal cavity insertion tube flows in a spiral shape. The position from which the gas flows out in a spiral manner may be only at the tip of the nasal cavity insertion tube, but in some cases, it may be at a portion other than the tip. Further, it is preferable that the gas that flows out in a spiral form is the majority of the gas that flows out from the nasal cannula. As a specific structure for causing gas to flow out in a spiral manner, for example, a structure in which a spiral protrusion is provided on the inner wall of a nasal cavity insertion tube can be mentioned.
また本発明の鼻カニユーラに関する他の好まし
い態様は、第６図に示す如く、先端部の気体流出
口６以外に流出する気体の少なくとも一部が小径
の気体流出口９より放射状に流れるようにしたも
のである。即ちその流動状態としては、流出気体
の少なくとも一部、好ましくは大半が流れに沿つ
て広がつた方向に流れるようにしたものが挙げら
れ、その最大に広がつた方向と鼻腔挿入管での気
体の流れる軸方向となす角度は180度以下であり、
好ましくは、130度以下、更に好ましくは90度以
下である。かかる鼻腔挿入管の具体的構造として
は、例えば該管の先端部に球状面を有した多孔体
を備えたものや、該管の先端の中央部の一部に気
体の流動を阻止する構造を有したものがあげられ
る。尚本発明の鼻カニユーラは、いかなる材質の
ものであつてもよいが、具体的には例えばシリコ
ーンゴム、ポリエチレン、塩化ビニル重合体等の
プラスチツクやステンレススチール等の金属など
が挙げられる。中でも軟質のプラスチツク材料か
らなるものが鼻腔等に対して違和感が少なく好ま
しい。また第１図において鼻腔挿入管１，１′を
気体流入管２，２′を接続する部分１０の構造と
しては、使用時において鼻腔周辺部に適用しやす
いように偏平であることが望ましく、該部分１０
の鼻腔側において気体の一部が鼻孔周辺に向けて
流出し得るような開口部を設けてもよい。 Another preferred embodiment of the nasal cannula of the present invention is that, as shown in FIG. It is something. In other words, the flow state is such that at least a portion, preferably most, of the outflow gas flows in the direction in which it spreads along the flow, and the direction of maximum spread and the gas in the nasal cavity insertion tube are the same. The angle made with the flow axis direction is less than 180 degrees,
Preferably it is 130 degrees or less, more preferably 90 degrees or less. Specific structures of such nasal cavity insertion tubes include, for example, those equipped with a porous body having a spherical surface at the tip of the tube, and those with a structure that blocks the flow of gas in a part of the center of the tip of the tube. I can give you what I have. The nasal cannula of the present invention may be made of any material, but specific examples include plastics such as silicone rubber, polyethylene, and vinyl chloride polymers, and metals such as stainless steel. Among these, those made of soft plastic materials are preferred because they cause less discomfort to the nasal cavity and the like. Furthermore, in FIG. 1, the structure of the portion 10 that connects the nasal cavity insertion tubes 1, 1' with the gas inflow tubes 2, 2' is desirably flat so that it can be easily applied around the nasal cavity during use. part 10
An opening may be provided on the side of the nasal cavity through which a portion of the gas can flow out toward the vicinity of the nostril.
また本発明の鼻カニユーラは、鼻腔にある特定
の気体を流入せしめるために使用されるものであ
つて、その気体は特に限定されるものではない。
その気体の具体例としては、酸素、酸素富化空
気、あるいは各種の呼吸器疾患の治療用薬剤を混
入せしめた空気等があげられ、特に酸素富化空気
の場合にその優れた効果が得やすい。 Further, the nasal cannula of the present invention is used to cause a certain gas to flow into the nasal cavity, and the gas is not particularly limited.
Specific examples of such gases include oxygen, oxygen-enriched air, or air mixed with drugs for treating various respiratory diseases, and particularly in the case of oxygen-enriched air, it is easy to obtain excellent effects. .
本発明の鼻カニユーラの鼻腔挿入管から流出す
る該気体の量としては、0.1l／min以上が好まし
く、更には0.5l／min以上、特に1l／min以上の場
合に大きな効果が得られる。またかかる気体の流
出量の上限としては、10l／minが好ましく、更
には8l／minが好ましく、特に6l／minが実用上
望ましい。 The amount of the gas flowing out from the nasal cavity insertion tube of the nasal cannula of the present invention is preferably 0.1 l/min or more, more preferably 0.5 l/min or more, particularly 1 l/min or more, to obtain a great effect. Further, the upper limit of the flow rate of the gas is preferably 10 l/min, more preferably 8 l/min, and particularly preferably 6 l/min in practical terms.
さらに本発明の鼻カニユーラにおける気体流入
管の途中に、該気体中の有害成分や悪臭成分等を
除去するための吸着剤等を充填した気体浄化手
段、気体中の水分を調節するための加湿又は減湿
手段、微生物等の侵入を防止するための除菌フイ
ルター手段等を具備していてもよい。特に該気体
流入管が長い場合には、患者に不便のない範囲で
鼻腔挿入管の近くに気体浄化手段と除菌フイルタ
ー手段を設置する（好ましくは除菌フイルター手
段を鼻腔挿入管側に設置する）ことによつて、有
害成分や悪臭の除菌や微生物の増殖防止等が効果
的に行なうことができ、また使い捨て鼻カニユー
ラの場合に除菌フイルター手段を残した状態で鼻
腔挿入管近くの極く一部のみを交換すればよいと
いう利点がある。尚本発明以外の鼻カニユーラの
気体流入管においても上記気体浄化手段や除菌フ
イルター手段を具備せしめることが望ましい。 Further, in the nasal cannula of the present invention, a gas purification means filled with an adsorbent or the like for removing harmful components and malodorous components in the gas, a humidifier or It may be equipped with a dehumidifying means, a sterilizing filter means for preventing the invasion of microorganisms, etc. Particularly when the gas inflow tube is long, a gas purification means and a sterilization filter means are installed as close as possible to the nasal cavity insertion tube to the extent that it does not cause inconvenience to the patient (preferably, the sterilization filter means is installed on the side of the nasal cavity insertion tube). ), it is possible to effectively sterilize harmful components and bad odors and prevent the growth of microorganisms, and in the case of disposable nasal cannula, it is possible to remove the sterilization filter near the nasal cavity insertion tube. The advantage is that only one part needs to be replaced. Note that it is desirable that the gas inflow tubes of nasal cannulae other than those of the present invention also be provided with the above gas purification means and sterilization filter means.
本発明の酸化富化装置は、酸素濃度の高められ
た空気を取得し、呼吸器疾患患者等の酸素富化空
気を必要とする者に供給するための装置であつ
て、その酸素富化空気を使用に供するための供給
手段の一部に、好ましくは先端部に、前記した如
き鼻カニユーラを具備したことを特徴とするもの
である。酸素濃度の高められた空気を取得する手
段としては、空気を流入する手段、その空気の酸
素濃度を高める手段、得られた酸素富化空気を取
出す手段を具備したものである。その酸素濃度を
高める手段としては、特に限定されるものではな
く、例えば気体透過選択性を有した膜を使用した
もの、気体吸着選択性を有した吸着剤を使用した
もの、気体吸収選択性を有した吸収剤を用いたも
の、遠心力等を用いたもの、あるいはそれらを併
用したもの等が挙げられる。なかでも気体選択透
過膜を用いたもの、気体選択吸着剤を用いたも
の、及びそれらを組み合せたものが実用上好まし
く用いられる。 The oxidation enrichment device of the present invention is a device for acquiring air with increased oxygen concentration and supplying the oxygen-enriched air to people who require oxygen-enriched air, such as patients with respiratory diseases. A nasal cannula as described above is provided as a part of the supply means for use, preferably at the distal end. The means for obtaining air with increased oxygen concentration includes means for introducing air, means for increasing the oxygen concentration of the air, and means for taking out the obtained oxygen-enriched air. There are no particular limitations on the means for increasing the oxygen concentration, such as using a membrane with gas permeation selectivity, using an adsorbent with gas adsorption selectivity, or using a membrane with gas absorption selectivity. Examples include those that use an absorbent containing a carbon dioxide, those that use centrifugal force, or those that use a combination of these. Among these, those using a gas selective permeation membrane, those using a gas selective adsorbent, and those using a combination thereof are preferably used in practice.
かかる酸素富化装置は、酸素濃度が25％以上、
更に好ましくは30％以上の酸素富化空気を使用者
に供給するものであり、その酸素富化空気の供給
量として、下限が0.1l／min、更には0.5l／min、
特に1l／minであることが好ましく、また上限が
10l／min、更には8l／min、特に6l／minである
ことが望ましい。 Such an oxygen enrichment device has an oxygen concentration of 25% or more,
More preferably, 30% or more oxygen-enriched air is supplied to the user, and the lower limit of the supply amount of oxygen-enriched air is 0.1 l/min, more preferably 0.5 l/min.
In particular, it is preferably 1l/min, and the upper limit is
It is desirable that the flow rate be 10 l/min, more preferably 8 l/min, particularly 6 l/min.
この供給量が大きい場合に、本発明の特徴であ
る鼻カニユーラの利点がより効果的に生かされ
る。 When this supply amount is large, the advantages of the nasal cannula, which is a feature of the present invention, are more effectively utilized.
本発明の酸素富化装置の好ましい態様の１つで
ある膜型酸素富化装置の具体的構造を次に例示す
る。即ち該装置として、大気を取り入れるための
フアン手段、その大気が気体選択透過性膜の表面
を通過し酸素富化空気が透過するように構成され
た多数の膜セルからなるモジユール、該膜セルに
おける膜裏面側を大気よりも低い圧力に保ち、且
つ酸素富化空気をモジユールより取り出すための
真空ポンプ手段及び導管手段、取り出された酸素
富化空気を使用に供するための供給手段を具備し
たものが挙げられる。また本発明の他の好ましい
態様の１つである吸着型酸素富化装置の具体例と
して、窒素ガスを選択的に吸着する吸着剤を充填
した吸着剤床を２基、該吸着剤床に加圧された大
気を流入するためのコンプレツサー手段、該吸着
剤床から酸素富化空気を取り出すための導管手段
及びその酸素富化空気を使用に供するための供給
手段を具備したものであつて、２基の吸着床が交
互に加圧−減圧−再生のサイクルを繰り返すよう
に運転される装置が挙げられる。尚いずれの装置
においても、酸素富化空気を取り出すための導管
手段又はそれを使用に供するための供給手段にお
いて、供給する酸素富化空気の流量を調節する手
段を有することが望ましい。 The specific structure of a membrane type oxygen enrichment device, which is one of the preferred embodiments of the oxygen enrichment device of the present invention, will be illustrated below. That is, the device includes a fan means for taking in atmospheric air, a module consisting of a number of membrane cells configured so that the atmospheric air passes through the surface of a gas selectively permeable membrane, and oxygen-enriched air permeates therethrough; A device that maintains the pressure on the back side of the membrane at a level lower than that of the atmosphere, and is equipped with a vacuum pump means and conduit means for extracting oxygen-enriched air from the module, and a supply means for making the extracted oxygen-enriched air available for use. Can be mentioned. Further, as a specific example of the adsorption type oxygen enrichment device which is one of the other preferred embodiments of the present invention, two adsorbent beds filled with an adsorbent that selectively adsorbs nitrogen gas are added to the adsorbent bed. compressor means for admitting pressurized atmospheric air, conduit means for removing oxygen-enriched air from the adsorbent bed, and supply means for making the oxygen-enriched air available for use, comprising: 2 Examples include apparatuses in which the primary adsorption beds are operated in alternating pressurization-depressurization-regeneration cycles. In either device, it is desirable that the conduit means for taking out the oxygen-enriched air or the supply means for making it available for use include means for adjusting the flow rate of the supplied oxygen-enriched air.
＜発明の効果＞
本発明における鼻カニユーラ及びそれを具備し
た酸素富化装置は、特定の鼻腔挿入管を有するこ
とから、そこから流出する気体の流量が大きくな
つても鼻腔内における気体の動圧が大きくなりに
くく、それ使用する者に与える苦痛を非常に小さ
くすることができるという優れた効果を奏するも
のである。尚その気体の流量が小さい場合であつ
ても使用者に与える違和感を最小限にとどめるこ
とができる利点がある。<Effects of the Invention> Since the nasal cannula and the oxygen enrichment device equipped with the same according to the present invention have a specific nasal cavity insertion tube, even if the flow rate of gas flowing out from there increases, the dynamic pressure of the gas in the nasal cavity remains constant. It has excellent effects in that it does not easily become large and the pain it inflicts on the person using it can be minimized. Note that even when the flow rate of the gas is small, there is an advantage that the discomfort given to the user can be kept to a minimum.
第１図は本発明の鼻カニユーラを例示したもの
であり、第２図は第１図における鼻腔挿入管の部
分を拡大して示したものである。第３図〜第６図
は、本発明の鼻カニユーラの他の例における鼻腔
挿入管部を拡大して示したものである。
FIG. 1 illustrates the nasal cannula of the present invention, and FIG. 2 shows an enlarged view of the nasal cavity insertion tube in FIG. 1. 3 to 6 are enlarged views of the nasal cavity insertion tube portion in other examples of the nasal cannula of the present invention.
Claims (1)
した鼻カニユーラにおいて、該鼻腔挿入管から流
出する気体の少なくとも一部が該鼻腔挿入管先端
部の軸方向に対して角度を有する方向に流れるた
めの分散手段を該鼻腔挿入管に具備せしめたこと
を特徴とする鼻カニユーラ。 ２ 該分散手段が、該鼻腔挿入管における先端部
の気体流出口以外の気体流出口である特許請求の
範囲第１項記載の鼻カニユーラ。 ３ 該分散手段が、該鼻腔挿入管から流出する気
体の少なくとも一部が螺旋状に流れるようにする
ための手段である特許請求の範囲第１項記載の鼻
カニユーラ。 ４ 該分散手段が、該鼻腔挿入管から流出する気
体の少なくとも一部が放射状に流れるようにする
ための手段である特許請求の範囲第１項記載の鼻
カニユーラ。 ５ 該気体が、酸素富化空気である特許請求の範
囲第１項〜第４項のいずれかに記載の鼻カニユー
ラ。 ６ 空気を流入する手段、該流入空気の酸素濃度
を高める手段、得られた酸素富化空気を取出す手
段、取出した酸素富化空気を使用に供する供給手
段を有した酸素富化装置において、該供給手段の
一部に、該酸素富化空気の流入管と該酸素富化空
気流出用鼻腔挿入管を具備し該鼻腔挿入管から流
出する該酸素富化空気の少なくとも一部が該鼻腔
挿入管先端部の軸方向に対して角度を有する方向
に流れるための分散手段を該鼻腔挿入管に具備せ
しめた鼻カニユーラを有したことを特徴とした酸
素富化装置。[Scope of Claims] 1. In a nasal cannula equipped with a gas inflow tube and a gas outflow nasal cavity insertion tube, at least a portion of the gas flowing out from the nasal cavity insertion tube is directed toward the axial direction of the nasal cavity insertion tube tip. A nasal cannula, characterized in that the nasal cavity insertion tube is equipped with a dispersion means for flowing in an angular direction. 2. The nasal cannula according to claim 1, wherein the dispersion means is a gas outlet other than the gas outlet at the distal end of the nasal cavity insertion tube. 3. The nasal cannula according to claim 1, wherein the dispersion means is a means for causing at least a portion of the gas flowing out of the nasal cavity insertion tube to flow in a spiral shape. 4. The nasal cannula according to claim 1, wherein the dispersion means is a means for causing at least a portion of the gas flowing out from the nasal cavity insertion tube to flow radially. 5. The nasal cannula according to any one of claims 1 to 4, wherein the gas is oxygen-enriched air. 6. In an oxygen enrichment device having a means for introducing air, a means for increasing the oxygen concentration of the incoming air, a means for taking out the obtained oxygen-enriched air, and a supply means for making the extracted oxygen-enriched air available for use, A part of the supply means includes an inflow tube for the oxygen-enriched air and a nasal insertion tube for outflowing the oxygen-enriched air, and at least a portion of the oxygen-enriched air flowing out from the nasal insertion tube is supplied to the nasal insertion tube. 1. An oxygen enrichment device comprising a nasal cannula, the nasal cannula having a dispersion means for flowing in a direction at an angle to the axial direction of the tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11527185A JPS61276566A (en) | 1985-05-30 | 1985-05-30 | Nose catheter and oxygen enriching apparatus using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11527185A JPS61276566A (en) | 1985-05-30 | 1985-05-30 | Nose catheter and oxygen enriching apparatus using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61276566A JPS61276566A (en) | 1986-12-06 |
| JPH0262266B2 true JPH0262266B2 (en) | 1990-12-25 |
Family
ID=14658532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11527185A Granted JPS61276566A (en) | 1985-05-30 | 1985-05-30 | Nose catheter and oxygen enriching apparatus using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61276566A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4537783B2 (en) * | 2004-07-02 | 2010-09-08 | 山路 清一 | Oxygen supply equipment |
| JP4636910B2 (en) * | 2005-03-16 | 2011-02-23 | テルモ株式会社 | Oxygen concentrator |
| JP4636912B2 (en) * | 2005-03-16 | 2011-02-23 | テルモ株式会社 | Oxygen concentrator |
| JP4636911B2 (en) * | 2005-03-16 | 2011-02-23 | テルモ株式会社 | Oxygen concentrator |
| US9943660B2 (en) * | 2006-08-04 | 2018-04-17 | Resmed Limited | Nasal prongs for mask system |
| EP2130563B1 (en) | 2008-06-04 | 2012-02-15 | ResMed Limited | Patient interface systems |
| KR20140135197A (en) * | 2012-02-16 | 2014-11-25 | 카프니아, 인코포레이티드 | Gas dispenser with diffusing nosepiece |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52105997U (en) * | 1976-02-09 | 1977-08-12 |
-
1985
- 1985-05-30 JP JP11527185A patent/JPS61276566A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61276566A (en) | 1986-12-06 |
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| EXPY | Cancellation because of completion of term |