WO2020184345A1 - ガス製品及びその製造方法、並びに医療用吸入ガスを製造する方法 - Google Patents
ガス製品及びその製造方法、並びに医療用吸入ガスを製造する方法 Download PDFInfo
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- WO2020184345A1 WO2020184345A1 PCT/JP2020/009238 JP2020009238W WO2020184345A1 WO 2020184345 A1 WO2020184345 A1 WO 2020184345A1 JP 2020009238 W JP2020009238 W JP 2020009238W WO 2020184345 A1 WO2020184345 A1 WO 2020184345A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M15/00—Inhalators
- A61M15/0001—Details of inhalators; Constructional features thereof
- A61M15/0003—Details of inhalators; Constructional features thereof with means for dispensing more than one drug
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
- A61M16/101—Preparation of respiratory gases or vapours with O2 features or with parameter measurement using an oxygen concentrator
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/02—Gases
- A61M2202/0208—Oxygen
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/02—Gases
- A61M2202/0266—Nitrogen (N)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/02—Gases
- A61M2202/0266—Nitrogen (N)
- A61M2202/0275—Nitric oxide [NO]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/014—Nitrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Definitions
- the present invention relates to a gas product, a method for producing the same, and a method for producing medical inhaled gas.
- Patent Document 1 It has been reported that inhalation of a gas composition containing nitric oxide, hydrogen and oxygen can effectively reduce organ and tissue damage during ischemia-reperfusion.
- an object of one aspect of the present invention is to provide a gas product that enables the medical practice of simultaneously inhaling and administering nitric oxide, hydrogen, and oxygen to be performed more easily.
- One aspect of the present invention relates to a gas product having a gas container and a gas composition filled in the gas container.
- the gas composition contains nitric oxide, hydrogen, and an inert gas, and the concentration of the nitric oxide is 20% by volume or less based on the volume of the gas composition.
- the combination of nitric oxide and hydrogen is a combination of a flammable gas and a flammable gas, it is generally considered difficult to stably store a mixed gas containing both for a long period of time.
- extremely high storage stability is required, such as the fluctuation range of the concentration of each gas within ⁇ 5% in one year, but the mixed gas in which nitric oxide and hydrogen coexist is such high. Having storage stability is usually difficult to expect.
- the concentration of nitric oxide is 20% by volume or less, the gas composition containing nitric oxide and hydrogen can be stably stored as a gas product, and the present invention has been found.
- the gas composition can be stably stored for a long period of time in the gas container of the gas product. Further, by using the gas composition in the gas product according to the present invention, only by controlling the supply of two types of gas, that is, the gas composition and the gas containing oxygen, three types of nitric oxide, hydrogen and oxygen are used. The medical practice of simultaneously inhaling and administering gas to a patient can be easily performed.
- Another aspect of the present invention relates to a method for producing the above gas product.
- the method comprises filling a gas container with a first raw material gas containing nitrogen monoxide and an inert gas, and further filling the gas container with a second raw material gas containing hydrogen and an inert gas.
- the gas container is further filled with an inert gas, whereby a gas composition containing nitrogen monoxide, hydrogen and an inert gas, wherein the concentration of nitrogen monoxide is based on the volume of the gas composition.
- the formation of a gas composition of 20% by volume or less is included in this order. According to this method, the gas product can be produced efficiently and with high accuracy.
- Yet another aspect of the present invention relates to a method for producing a medical inhalation gas containing nitric oxide, hydrogen and oxygen.
- the method includes the step of mixing the gas composition in the gas product with a gas containing oxygen. According to this method, it is possible to easily and efficiently produce a medical inhaled gas for performing a medical practice in which three types of gases, nitric oxide, hydrogen and oxygen, are simultaneously inhaled and administered to a patient.
- a gas product that enables the medical practice of simultaneously inhaling and administering nitric oxide, hydrogen and oxygen to be performed more easily.
- the gas product according to one aspect of the present invention can also have excellent storage stability for a long period of time without the gas composition to be filled exhibiting explosiveness.
- the gas product has a gas container and a gas composition filled in the gas container.
- the gas composition is filled in the gas container and stored and used.
- the gas container may be a pressure-resistant gas cylinder having a gas chamber.
- the gas chamber may have an inner wall surface made of stainless steel.
- the inner wall surface may be treated by physical polishing, chemical polishing, or electrolytic polishing from the viewpoint of preventing the metal on the inner wall surface from acting as a catalyst for promoting the reaction between nitric oxide and hydrogen.
- the gas composition according to one embodiment contains nitric oxide, hydrogen, and an inert gas.
- a medical inhalation gas containing nitric oxide, hydrogen and oxygen can be formed. That is, the gas product according to one embodiment is used to form a medical inhalation gas containing nitric oxide, hydrogen and oxygen.
- This medical inhaled gas is usually formed in the clinical setting and immediately administered by inhalation to the patient.
- the medical inhaled gas can be used, for example, as a medicine for reducing ischemia-reperfusion injury.
- the concentration of nitric oxide is 20% by volume or less based on the volume of the gas composition.
- the concentration of nitric oxide is 20% by volume or less, the gas composition does not exhibit explosiveness, and the gas composition can be stably stored as a gas product for a long period of time.
- the concentration of nitrogen monoxide may be 5% by volume or less, or 1% by volume or less, and is 10% by volume or more and 50% by volume ppm. As mentioned above, it may be 80 volume ppm or more, 100 volume ppm or more, or 200 volume ppm or more.
- the concentration of nitrogen monoxide in the gas composition is 10% by volume ppm to 20% by volume, 50% by volume ppm to 20% by volume, 80% by volume ppm to 20% by volume, 100 by volume based on the volume of the gas composition.
- the concentration of hydrogen is 0.1% by volume or more, 1% by volume or more, or 2% by volume based on the volume of the gas composition. It may be 40% by volume or less, 10% by volume or less, or 4.7% by volume or less. From the above viewpoint, the concentration of hydrogen is 0.1% by volume to 40% by volume, 0.1% by volume to 10% by volume, and 0.1% by volume to 4.7% by volume based on the volume of the gas composition. 1. 1% to 40% by volume, 1% to 10% by volume, 1% by volume to 4.7% by volume, 2% by volume to 40% by volume, 2% by volume to 10% by volume, or 2% by volume to 4. It may be 7% by volume.
- the gas composition according to the embodiment may be a mixed gas composed of nitric oxide and hydrogen and the rest of the inert gas.
- the gas composition may contain inevitable trace amounts of impurities.
- the inert gas may be a gas that does not substantially react with nitric oxide and hydrogen. From an economic point of view, the inert gas may be nitrogen.
- the total pressure of the gas composition according to one embodiment may be 0.1 MPa or more, or 10 MPa or more, mainly from an economic point of view. Further, the total pressure of the gas composition may be required to be 15 MPa or less due to restrictions under the High Pressure Gas Safety Act. From the above viewpoint, the total pressure of the gas composition may be 0.1 MPa to 15 MPa or 10 MPa to 15 MPa.
- the gas products described above include, for example, filling a gas container with a first raw material gas containing nitrogen monoxide and an inert gas, and further filling the gas container with a second raw material gas containing hydrogen and an inert gas. It can be produced by a method including filling and further filling the gas container with an inert gas, thereby forming a gas composition containing nitrogen monoxide, hydrogen and an inert gas, in this order. ..
- FIG. 1 is a schematic view showing a filling device for manufacturing a gas product according to an embodiment.
- the filling device shown in FIG. 1 includes a pipe 21, a valve V1 and a valve V2 mounted on both ends of the pipe 21, a pipe 22 connected to the valve V1, a pipe 23 connected to the valve V2, and a valve.
- Valve V3, valve V4, valve V5 and valve V6 connected to the pipe 21 at a position between V1 and valve V2, a pressure gauge 7 connected to the valve V6, and a platform scale 3 arranged in the vicinity of the pipe 22.
- the pipes 21, 22, and 23 form a flow path for circulating the raw material gas and the like. From the valve V1 side, the valve V3, the valve V4, the valve V6, and the valve V5 are connected to the pipe 21 in this order.
- the gas container 1 filled with the target gas composition is connected to the pipe 22 and placed on the platform scale 3.
- the gas container 1 has a container valve 1A.
- the gas container 2 filled with the raw material gas is connected to the pipe 23.
- the gas container 2 has a container valve 2A.
- the container valve 1A and the container valve 2A are provided to prevent flow between the gas chambers in the gas containers 1 and 2 and the outside (atmosphere). By replacing the gas container 2, the raw material gas containing different components can be sequentially supplied.
- the temperature of the raw material gas and the produced gas composition is usually ⁇ 92 to 60 ° C. If this temperature is less than -92 ° C, nitric oxide may liquefy. From the viewpoint of the High Pressure Gas Safety Act, the temperature of the raw material gas and the produced gas composition may be 40 ° C. or lower.
- the gas container 1 and the gas container 2 are connected via pipes 21, 22, and 23.
- the pipes 22 and 23 may be flexible high pressure pipes.
- a pipe for supplying a high-pressure inert gas (for example, nitrogen gas) is connected to the valve V5.
- a high-pressure inert gas for example, nitrogen gas
- an inert gas as a diluting gas is supplied to the pipe 21.
- the valve V4 is connected to the abatement device.
- the valve V4 is opened, the gas existing in the pipe 21 at a pressure equal to or higher than the atmospheric pressure is discharged to the abatement device until the pressure reaches the atmospheric pressure.
- a pipe for discharging gas to the vacuum pump is connected to the valve V3.
- the valve V3 When the valve V3 is opened, the inside of the pipe 21 can be made almost vacuum.
- the platform scale 3 has a weight display unit 5.
- the platform scale 3 may be a so-called load cell type platform scale.
- the filling amount of each raw material gas is adjusted by filling the gas container 1 with the raw material gas while measuring the weight of the gas container 1 with the platform scale 3.
- the weight of each raw material gas constituting the produced gas composition can be calculated in advance.
- the pipe 22 is connected to the container valve 1A of the gas container 1.
- the gas container 1 is sealed by a container valve 1A.
- the inside of the gas container 1 may be decompressed in advance.
- the container valve 2A of the gas container 2 filled with the first raw material gas M1 containing nitric oxide and the inert gas is connected to the pipe 23.
- the first raw material gas M1 may contain nitric oxide having a concentration of about 1 to 20 times the concentration in the produced gas composition.
- valves V1, the valve V2 and the valve V3 are opened, the valves V4 and V5 are closed, and the pipes 21, 22, 23 are operated by the vacuum pump connected to the valve V3.
- the valve V5 is opened and nitrogen gas is supplied to the pipes 21, 22 and 23 up to a pressure of about 1 MPa in order to dilute the slightly remaining oxygen.
- the valve V5 is closed, the valve V4 is opened, and nitrogen gas is discharged to the vicinity of atmospheric pressure.
- the valve V3 is opened, and the inside of the pipes 21, 22, and 23 is evacuated again by the vacuum pump. These operations are repeated several times to dilute and expel the remaining oxygen.
- the valve V3 is opened and the valve V3 is closed in a state where the inside of the pipes 21, 22 and 23 is almost evacuated.
- the container valve 2A is opened and closed, and the first raw material gas M1 is inserted into the pipes 21, 22 and 23 until the instruction of the pressure gauge 7 connected to the pipe 21 becomes the internal pressure of the gas container 1 + 0.5 MPa to 2 MPa. Introduce.
- the valve V1 is closed and the container valve 1A is opened. At this point, the weight display unit 5 of the platform scale 3 is reset to zero.
- the container valve 2A After opening the valve V1 and confirming that the instruction of the pressure gauge 7 is lowered, the container valve 2A is opened and closed, and the gas container 1 is filled with the first raw material gas M1 having a weight calculated in advance. After filling, the container valve 1A is closed. The indicated pressure of the pressure gauge 7 at this point is recorded.
- the first raw material gas M1 remaining in the pipes 21, 22, and 23 is discharged to the vicinity of atmospheric pressure by opening the valve V4.
- the valve V5 is opened to supply the inert gas to the pipes 21, 22, and 23 up to a pressure of about 1 MPa.
- the valve V5 is closed, the valve V4 is opened, and the inert gas is discharged to the vicinity of atmospheric pressure.
- the valve V4 is closed, the valve V3 is opened, and the inside of the pipes 21, 22, and 23 is evacuated by a vacuum pump. These operations are repeated several times to dilute and discharge the remaining nitric oxide gas.
- the valve V5 is opened and closed to introduce an inert gas so that the inside of the pipes 21, 22 and 23 is at atmospheric pressure or higher.
- the weight of the gas container 1 is measured and recorded.
- the gas container 2 is replaced with a gas container 2 filled with a second raw material gas M2 containing hydrogen and an inert gas.
- the container valve 1A of the gas container 1 is reconnected to the pipe 22.
- the second raw material gas M2 may contain hydrogen having a concentration of about 1 to 20 times the concentration in the produced gas composition.
- valve V3 After diluting and discharging the oxygen remaining in the pipes 21, 22 and 23 by the same operation as described above, the valve V3 is opened and the valve V3 is closed with the inside of the pipes 21 and 22 and 23 almost evacuated. To do.
- the container valve 2A is opened and closed, and the second raw material gas M2 is introduced into the pipes 21, 22 and 23 until the instruction of the pressure gauge 7 connected to the pipe 21 becomes the internal pressure of the gas container 1 + 0.5 MPa to 2 MPa. Introduce.
- the valve V1 is closed and the container valve 1A is opened. At this point, the weight display unit 5 of the platform scale 3 is reset to zero.
- the container valve 2A After opening the valve V1 and confirming that the instruction of the pressure gauge 7 is lowered, the container valve 2A is opened and closed, and the gas container 1 is filled with the second raw material gas M2 having a weight calculated in advance. After filling, the container valve 1A is closed. The indicated pressure of the pressure gauge 7 at this point is recorded.
- the second raw material gas M2 remaining in the pipes 21, 22, and 23 is discharged to the vicinity of atmospheric pressure by opening the valve V4.
- the valve V5 is opened to supply the inert gas to the pipes 21, 22, and 23 up to a pressure of about 1 MPa.
- the valve V5 is closed, the valve V4 is opened, the inert gas is discharged to the vicinity of atmospheric pressure, then the valve V4 is closed, the valve V3 is opened, and the inside of the pipes 21, 22, 23 is operated by a vacuum pump. To almost vacuum. These operations are repeated several times to dilute and discharge the remaining hydrogen gas.
- the valve V5 is opened and closed to introduce an inert gas so that the inside of the pipes 21, 22 and 23 is at atmospheric pressure or higher. After closing the valve V1 and removing the pipe 22 from the container valve 1A, the weight of the gas container 1 is measured and recorded.
- the container valve 1A of the gas container 1 is reconnected to the pipe 22.
- the valve V3 is opened and the valve V3 is closed with the inside of the pipes 21 and 22 and 23 almost evacuated. To do.
- valve V5 is opened and closed, and the inert gas is introduced into the pipes 21, 22 and 23 until the indication of the pressure gauge connected to the pipe 21 becomes the internal pressure of the gas container 1 + 0.5 MPa to 2 MPa.
- the valve V1 is closed and the container valve 1A is opened.
- the weight display unit 5 of the platform scale 3 is reset to zero.
- valve V5 After opening the valve V1 and confirming that the instruction of the pressure gauge 7 is lowered, the valve V5 is opened and closed, and the gas container 1 is filled with the inert gas of the weight calculated in advance. After filling, the container valve 1A is closed. The indicated pressure of the pressure gauge 7 at this point is recorded.
- valve V4 is opened to discharge the inert gas remaining in the pipes 21 and 22 to the vicinity of atmospheric pressure.
- the valve V5 is opened and closed, and nitrogen gas having an atmospheric pressure or higher is introduced into the pipe 21.
- the pipe 22 is removed from the container valve 1A. The weight of the gas container 1 at this point is measured and recorded.
- a filled gas container filled with the gas composition can be obtained, and this can be used as a gas product.
- the temperature at which the gas product (filled gas container) is stored is usually ⁇ 92 to 60 ° C. If this temperature is less than -92 ° C, nitric oxide may liquefy. From the viewpoint of the High Pressure Gas Safety Act, the storage temperature may be 40 ° C. or lower.
- the above-mentioned gas product can be used to produce a medical inhalation gas containing nitric oxide, hydrogen and oxygen.
- the method for producing a medical inhaled gas according to an embodiment includes a step of mixing the gas composition in the gas product described above with a gas containing oxygen.
- the medical inhalation gas is obtained, for example, by supplying a gas composition from the above-mentioned gas product in a clinical setting, supplying a gas containing oxygen, and mixing them.
- the mixing of the gas composition with the gas containing oxygen is preferably performed immediately prior to inhalation by the patient.
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Abstract
Description
内径55cm、高さ100mmで、放電電極及びコルク製の蓋を装着した爆発筒内に、下記表1に示す濃度の一酸化窒素、水素及び窒素を含むガス組成物を導入した。爆発筒を囲む安全カバーを閉じ、電極間に火花放電を発生させた。爆発筒の蓋が飛んだ場合は爆発有り、爆発筒の蓋が飛ばなかった場合は爆発無しと判定した。実施例1~3のガス組成物について、同様の試験を各3回行った。
(1)NO/N2ガス
調質マンガン鋼製の5本のガスシリンダーを準備した。各ガスシリンダーに、約9体積ppmの一酸化窒素及び窒素からなるガス組成物を充填した。充填から2日後の一酸化窒素濃度を測定し、その初期(充填時)からの増減率を算出した。表2に示されるように、一酸化窒素の濃度が3~4%程度の比較的大きな割合で低下した。
調質マンガン鋼製の3本のガスシリンダーを準備した。各ガスシリンダーに、約144体積ppmの一酸化窒素、3.5体積%の水素、及び残部の窒素からなるガス組成物を充填した。充填から1カ月後、6カ月後、及び12カ月後の一酸化窒素濃度を測定した。12カ月後の一酸化窒素濃度の初期(充填時)からの増減率を算出した。表3に示されるように、一酸化窒素、水素及び不活性ガスを含むガス組成物の場合、1年の長期間にわたって一酸化窒素の濃度が安定して維持された。このことから、このガス組成物をガス容器に充填したガス製品は、長期にわたり安定的に保存できるといえる。
Claims (7)
- ガス容器と、該ガス容器に充填されたガス組成物と、を有するガス製品であって、
前記ガス組成物が、一酸化窒素と、水素と、不活性ガスと、を含有し、
前記一酸化窒素の濃度が、当該ガス組成物の体積を基準として20体積%以下である、ガス製品。 - 前記水素の濃度が、当該ガス組成物の体積を基準として0.1体積%~40体積%である、請求項1に記載のガス製品。
- 当該ガス組成物の全圧が0.1MPa~15MPaである、請求項1又は2に記載のガス製品。
- 前記不活性ガスが窒素を含む、請求項1~3のいずれか一項に記載のガス製品。
- 一酸化窒素、水素及び酸素を含有する医療用吸入ガスを形成するために用いられる、請求項1~4のいずれか一項に記載のガス製品。
- 一酸化窒素及び不活性ガスを含む第1の原料ガスをガス容器に充填することと、
前記ガス容器に、水素及び不活性ガスを含む第2の原料ガスを更に充填することと、
前記ガス容器に不活性ガスを更に充填し、それにより、一酸化窒素、水素及び不活性ガスを含むガス組成物であって、一酸化窒素の濃度が、当該ガス組成物の体積を基準として20体積%以下である、ガス組成物を形成することと、
をこの順に含む、請求項1~5のいずれか一項に記載のガス製品を製造する方法。 - 請求項1~5のいずれか一項に記載のガス製品における前記ガス組成物と、酸素を含むガスとを混合する工程を含む、一酸化窒素、水素及び酸素を含有する医療用吸入ガスを製造する方法。
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US17/285,788 US11406785B2 (en) | 2019-03-13 | 2020-03-04 | Gas product, method for producing same and method for producing medical inhalation gas |
EP20769508.1A EP3815698B1 (en) | 2019-03-13 | 2020-03-04 | Gas product, method for producing same and method for producing medical inhalation gas |
CA3133193A CA3133193C (en) | 2019-03-13 | 2020-03-04 | Gas product, method for producing same and method for producing medical inhalation gas |
KR1020217016287A KR102353089B1 (ko) | 2019-03-13 | 2020-03-04 | 가스 제품과 그 제조 방법, 및 의료용 흡입 가스를 제조하는 방법 |
CN202080003924.0A CN112384229B (zh) | 2019-03-13 | 2020-03-04 | 气体产品及其制造方法、以及医用吸入气体的制造方法 |
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CN112384229A (zh) | 2021-02-19 |
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EP3815698B1 (en) | 2024-04-24 |
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