EP3099329A1 - MÉLANGE GAZEUX NO/He À ACTION BACTÉRICIDE - Google Patents
MÉLANGE GAZEUX NO/He À ACTION BACTÉRICIDEInfo
- Publication number
- EP3099329A1 EP3099329A1 EP15706862.8A EP15706862A EP3099329A1 EP 3099329 A1 EP3099329 A1 EP 3099329A1 EP 15706862 A EP15706862 A EP 15706862A EP 3099329 A1 EP3099329 A1 EP 3099329A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- composition according
- gas
- patient
- mixture
- oxygen
- 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.)
- Ceased
Links
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/007—Pulmonary tract; Aromatherapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/007—Pulmonary tract; Aromatherapy
- A61K9/0073—Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy
Definitions
- the present invention relates to a gaseous composition based on nitric oxide
- NO nitrogen
- He helium
- Nitric oxide is a gas commonly used by inhalation to treat hypoxemic respiratory distress associated with human pulmonary vasoconstriction, such as ARDS or persistent pulmonary hypertension of the newborn (HPPN).
- the doses administered to the patients seldom exceed 80 ppm by volume, the remainder of the inhaled gas mixture consisting essentially of oxygen and nitrogen.
- the doses of inhaled NO resulting in a bactericidal effect in the tested individuals are of the order of 160 to 200 ppm by volume for continuous administration.
- the problem is therefore to be able to use inhaled NO to fight against a bacterial infection of the airways of a patient, in particular of the bronchial tree and lungs, decreasing the risk of associated toxicity.
- it is desirable to be able to reduce the toxicity of the NO while retaining its bactericidal properties.
- the solution is then a gaseous composition containing nitrogen monoxide (NO) and helium (He) for use by inhalation to prevent or treat at least one bacterial infection affecting all or part of the respiratory tract of a patient.
- NO nitrogen monoxide
- He helium
- gaseous composition of the invention may comprise one or more of the following technical characteristics:
- the respiratory tract includes the bronchial tree and the lungs.
- the NO content is between 5 and 5000 ppm by volume (ppmv), preferably less than 3500 ppmv, more preferably less than 2500 ppmv, more preferably less than 2000 ppmv, more preferably less than 1500 ppmv.
- the NO content is between 10 and 1000 ppmv.
- the patient is a human being, especially an adult, a child or a newborn.
- the gas mixture NO / He is diluted with a gas containing oxygen in a ventilator circuit of a ventilator or a medical ventilator, for example oxygen or a mixture of N 2/0 2, as the 'air.
- the gaseous composition also contains oxygen, preferably at least 21% by volume of oxygen.
- the gaseous composition also contains nitrogen (N 2 ).
- the gaseous composition consists of helium, nitrogen and NO.
- the NO / He gas mixture is packaged in a gas bottle.
- the NO / He gas mixture is used while being inhaled continuously or sequentially.
- the NO / He gas mixture is diluted with an oxygen-containing gas in a medical nebulizer.
- the NO / He gas mixture is delivered continuously to the patient for a period of a few minutes to several tens of minutes.
- the NO / He gas mixture is delivered discontinuously or sequentially to the patient for a few minutes to several tens of minutes, over a period of time of one to several hours.
- the gas mixture NO / He is administered in combination with a treatment or antibiotic product.
- the treatment or antibiotic product associated with the gaseous mixture NO / He is chosen so as to obtain a synergistic action with said gas mixture NO / He.
- the invention also relates to a therapeutic treatment method, in which a gaseous composition according to the invention comprising a mixture of mono xy nitrogen (NO) and helium (He) to be administered by inhalation.
- the patient is further administered an antibiotic product or treatment, preferably in combination with the gas mixture NO / He so as to obtain a synergistic action in the removal of all or part of the bacteria.
- FIG. 1 is a diagram of the respiratory airways of a human being
- FIG. 2 is an embodiment of an installation for administering a NO / He mixture according to the invention to a patient and,
- FIG. 3 schematizes the evolution of the pressure drop between the mouth and the alveolar zone of an individual for different gas flows.
- Figure 1 represents a diagram of the respiratory airways of a human being showing the air trachea 11, the bronchi 13, the bronchioles 14 and the alveoli 15 of a lung 12. All these airway portions are likely to be affected by a bacterial infection, especially the bronchial tree and lungs.
- an NO / He mixture administered by inhalation is used according to the present invention, for example by means of the installation of FIG. 2.
- It shows a facility for administering a NO / He mixture to a patient comprising a source of a gaseous mixture of NO and helium containing, for example, from 10 to 4000 ppm by volume of NO, the remainder being helium, typically from 10 to 1000 ppmv of NO.
- This source of NO / He 5 feeds via a conduit 7, a nebulizer 6 which is itself connected to a patient interface, such as a breathing mask 8, via a flexible pipe 9 so as to bring the gas to the airways of the patient 10, including the bronchial tree 3 and the lungs 2.
- the administration to the patient 10 of the NO / He mixture from the gas bottle 5 is done by diluting a starting NO / He mixture, for example containing from 10 to 4000 ppm by volume (ppmv) of NO and the helium rest, typically 10 to 1000 or 2000 ppmv, with air enriched in oxygen, that is to say containing at least 21% oxygen, or even more than 30% of oxygen so as to obtain a final concentration of NO given, typically between 5 and 250 ppm of NO, which is administered to the patient by inhalation, preferably less than 150 ppm by volume of NO.
- a starting NO / He mixture for example containing from 10 to 4000 ppm by volume (ppmv) of NO and the helium rest, typically 10 to 1000 or 2000 ppmv
- air enriched in oxygen that is to say containing at least 21% oxygen, or even more than 30% of oxygen so as to obtain a final concentration of NO given, typically between 5 and 250 ppm of NO, which is administered to the patient by inhalation,
- This dilution can be performed at the level of the pneumatic nebulizer or by any other conventional means or device.
- helium because of its physical properties, makes it possible to improve the flow regimes by favoring the laminar regime, when it is inhaled by an individual.
- a gaseous mixture NO / He in which helium replaces at least a part, or even all, the nitrogen generally used as a carrier gas, a better penetration of NO is obtained at the bronchial level 13, 14 and consequently , a decrease in the concentration of NO necessary to obtain an effective bactericidal action, and a decrease in the inhaled concentration to obtain an identical effective dose at the alveolar level, since the NO can then act up to the bronchial and alveolar levels.
- R is the density of the fluid (&#, -a );
- H is a loss of charge term
- v is the fluid velocity (m.s -1 );
- H is the sum of the linear and singular pressure losses. It can be written as:
- 3 ⁇ 4 3 ⁇ 4 represents singular pressure losses. In our case it corresponds mainly to the presence of bifurcations but can also be used to take into account particular constrictions (stenosis) or severe obstructions.
- the coefficient K is particularly difficult to predetermine since it depends very strongly on the geometric characteristics of the singularity.
- This coefficient K has been calculated for a set of geometric configurations of industrial type, including grid, tubing ....
- Table II shows the physical properties of the test gas mixtures (mixture A: air, ie N 2/0 2; Mixture B: He / 0 2) used in the previous simulation.
- N 2/0 2 78/22 1,809 x 10-5 1.201 1.506 x 10-5
- He / 0 2 78/22 2.152 x 10-5 0.422 5.100 x 10-5
- Figure 3 shows the evolution of the pressure drop between the mouth and the alveolar zone of an individual for different flow rates (L / min) of mixtures A (ie Air) and B (ie Helium / 0 2 ) tested.
- the respiratory effort provided by the patient will be less important in the case of a mixture NO / He / O 2 according to the invention, which will then allow him to inhale a larger volume of gas for the same inspiratory effort provided by the patient.
- Nitric oxide (NO) can therefore be inhaled more deeply by the patient and act better to fight against bacteria.
- a NO / He gas composition according to the invention for producing an inhalable medicament for treating a bacterial infection affecting all or part of the respiratory tract of an individual.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Inorganic Chemistry (AREA)
- Pulmonology (AREA)
- Organic Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oncology (AREA)
- Communicable Diseases (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1450770A FR3017052B1 (fr) | 2014-01-31 | 2014-01-31 | Melange gazeux no/he a action bactericide |
| PCT/FR2015/050182 WO2015114245A1 (fr) | 2014-01-31 | 2015-01-27 | MÉLANGE GAZEUX NO/He À ACTION BACTÉRICIDE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3099329A1 true EP3099329A1 (fr) | 2016-12-07 |
Family
ID=50489337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15706862.8A Ceased EP3099329A1 (fr) | 2014-01-31 | 2015-01-27 | MÉLANGE GAZEUX NO/He À ACTION BACTÉRICIDE |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20160346319A1 (fr) |
| EP (1) | EP3099329A1 (fr) |
| AU (1) | AU2015212716A1 (fr) |
| CA (1) | CA2938043A1 (fr) |
| FR (1) | FR3017052B1 (fr) |
| WO (1) | WO2015114245A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080167603A1 (en) * | 2000-12-26 | 2008-07-10 | Alex Stenzler | Method and device to prevent ventilator acquired pneumonia using nitric oxide |
| US20070181126A1 (en) * | 2006-02-08 | 2007-08-09 | Tolmie Craig R | Method and apparatus for ventilating a patient with a breathing gas mixture formed from nitric oxide, air, and oxygen |
| EP2514473A1 (fr) * | 2006-11-07 | 2012-10-24 | The General Hospital Corporation | Dispositif d'alimentation d'oxyde nitrique |
| WO2010115168A1 (fr) * | 2009-04-02 | 2010-10-07 | Breathe Technologies, Inc. | Procédés, systèmes et dispositifs de ventilation ouverte non vulnérante utilisant des buses d'apport de gaz prévues dans un tuyau extérieur |
-
2014
- 2014-01-31 FR FR1450770A patent/FR3017052B1/fr active Active
-
2015
- 2015-01-27 AU AU2015212716A patent/AU2015212716A1/en not_active Abandoned
- 2015-01-27 US US15/114,915 patent/US20160346319A1/en not_active Abandoned
- 2015-01-27 CA CA2938043A patent/CA2938043A1/fr not_active Abandoned
- 2015-01-27 WO PCT/FR2015/050182 patent/WO2015114245A1/fr not_active Ceased
- 2015-01-27 EP EP15706862.8A patent/EP3099329A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| DANIEL JEAN ET AL: "Beneficial effects of nitric oxide inhalation on pulmonary bacterial clearance (ABSTRACT)", CRITICAL CARE MEDICINE, vol. 30, no. 2, 1 February 2002 (2002-02-01), pages 1, XP055457143 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160346319A1 (en) | 2016-12-01 |
| FR3017052B1 (fr) | 2016-02-26 |
| WO2015114245A1 (fr) | 2015-08-06 |
| FR3017052A1 (fr) | 2015-08-07 |
| CA2938043A1 (fr) | 2015-08-06 |
| AU2015212716A1 (en) | 2016-09-01 |
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