CN106619658A - Medical aerosol preparation and quantitatively-inhaled aerosol - Google Patents

Medical aerosol preparation and quantitatively-inhaled aerosol Download PDF

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Publication number
CN106619658A
CN106619658A CN201611236776.9A CN201611236776A CN106619658A CN 106619658 A CN106619658 A CN 106619658A CN 201611236776 A CN201611236776 A CN 201611236776A CN 106619658 A CN106619658 A CN 106619658A
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China
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aerosol
medical
span
metered dose
preparation
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CN106619658B (en
Inventor
舒宏
侯曙光
李丛菊
贺钢民
张静
吴君
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SICHUAN PURUITE MEDICAL TECHNOLOGY Co Ltd
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SICHUAN PURUITE MEDICAL TECHNOLOGY Co Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/56Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
    • A61K31/58Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids containing heterocyclic rings, e.g. danazol, stanozolol, pancuronium or digitogenin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/16Amides, e.g. hydroxamic acids
    • A61K31/165Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide
    • A61K31/167Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide having the nitrogen of a carboxamide group directly attached to the aromatic ring, e.g. lidocaine, paracetamol
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/22Heterocyclic compounds, e.g. ascorbic acid, tocopherol or pyrrolidones
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/0012Galenical forms characterised by the site of application
    • A61K9/007Pulmonary tract; Aromatherapy
    • A61K9/0073Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy
    • A61K9/0078Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy for inhalation via a nebulizer such as a jet nebulizer, ultrasonic nebulizer, e.g. in the form of aqueous drug solutions or dispersions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/10Dispersions; Emulsions
    • A61K9/12Aerosols; Foams
    • A61K9/124Aerosols; Foams characterised by the propellant
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M15/00Inhalators
    • A61M15/0065Inhalators with dosage or measuring devices

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Dispersion Chemistry (AREA)
  • Pulmonology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Pain & Pain Management (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention discloses a medical aerosol preparation and quantitatively-inhaled aerosol. The preparation comprises active components and a liquid propellant which is used as a solvent of the active components, wherein the active components comprise mometasone furoate and formoterol fumarate; the liquid propellant is hydrofluorocarbon; the medical aerosol preparation also comprises ethyl alcohol and span-80 which are added into the liquid propellant; the weight ratio of the span-80 in the aerosol preparation is 0.01-0.1%w/w; medical liquid in the aerosol is the medical aerosol preparation. According to the scheme, span-80 is added into the aerosol preparation and is used as a surfactant; span-80 is capable of maintaining uniform concentration of the medical liquid for a long time, so that the purpose of improving the stability of the medical liquid is achieved; the addition amount of span-80 is limited, so that the influence on generation of the medical aerosol and reduction of dosage of fine particles caused by excessive span-80 can be avoided when span-80 achieves the effects of assisting suspension and lubricating.

Description

A kind of medicinal aerosol formulation and metered dose inhalation aerosol
Technical field
The present invention relates to medicinal aerosol products field, more particularly to a kind of medicinal aerosol formulation and gas is quantitatively sucked Mist agent.
Background technology
At present, pressurised metered dose inhalers (MDIs) are the most effective of administration low dose of accurate to human airway and most can quilt The mode of acceptance.The general therapeutic agent for delivering by this way includes the bronchodilator of the adrenaline excitants of β 2, especially It is β2agonists and hydrocortisone and combinations thereof.Typical MDIs includes an anti-autoclave equipped with therapeutic agent, wherein controlling Treat agent to be mostly dissolved in the medicine of liquefied propellant or be suspended in micronized particle in liquefied propellant, meter is additionally provided with MDIs Amount valve, by touching metering valve to discharge a certain amount of therapeutic agent.
Dissection and physiological make-up according to bronchus bronchiole and lung, to make medicine effectively be distributed or being deposited on Above-mentioned position, it is desired to which the granularity of medicine or pastille droplet is in 5 microns.Excessive (10 microns of >'s) or too small (1 micron of <) Granularity can not make drug deposition at above-mentioned position, and lessen the curative effect.So inhaling people's aerosol for medicine or pastille droplet Granularity typically requires control at 10 microns, and wherein great majority should be less than 5 microns.Drug microparticles are respectively provided with larger at 5 microns Surface energy, is readily adsorbed in vessel surface, so that liquid drug concentration is reduced, affects pharmaceutical effectiveness.
Describe in CN1196478 using the aerosol containing momestasone furoate and the pharmaceutical composition of formoterol fumarate Treat obstructive or airway inflammatory disease.
It is 1 that CN101856362 specifically describes momestasone furoate and the weight ratio of formoterol fumarate:1 to 50:1, throw It is HFA-227e to penetrate agent, while adding ethanol to adjust propellant output pressure, adds oleic acid to play dispersion medicine for surfactant The effect of thing and lubrication valve.
Because fumaric acid good fortune model sieve is slightly soluble in ethanol, after long-time is placed, diameter of aspirin particle can be assembled, and cause liquor strength It is uneven, so as to affect medicine delivery dose uniformity.How described above medicine delivery dose uniformity is solved the problems, such as, It is those skilled in the art's technical problem urgently to be resolved hurrily.
The content of the invention
For being slightly soluble in ethanol because of fumaric acid good fortune model sieve in above-mentioned prior art, after long-time is placed, diameter of aspirin particle Can assemble, cause liquor strength uneven, so as to affect the problem of medicine delivery dose uniformity.The invention provides a kind of doctor With aerosol preparations and metered dose inhalation aerosol, the medicinal aerosol formulation remains able to effectively guarantor after storage certain hour Demonstrate,prove its interior minuteness particle dosage, it is ensured that dosage delivered homogeneity.
To solve the above problems, a kind of medicinal aerosol formulation and metered dose inhalation aerosol that the present invention is provided passes through following Technical essential carrys out solve problem:A kind of medicinal aerosol formulation, including active component and the liquid as the active component solvent Change propellant, the active component includes momestasone furoate and fumaric acid good fortune model sieve, and the liquefied propellant is HFC, also Including the ethanol and sorbester p17 that make an addition in liquefied propellant, weight ratio of the sorbester p17 shared by aerosol preparations is 0.01%-0.1%w/w.
Specifically, for the problem of above-mentioned influence of ethanol medicine delivery dose uniformity, to aerosol system in prior art Add oleic acid in agent, but with the lengthening of aerosol preparations standing time, medicine delivery dose uniformity is gradually deteriorated.
In this programme, it is used as surfactant by adding sorbester p17 in aerosol preparations, when the sorbester p17 can be long Between keep liquor strength uniform, so as to reach the purpose for increasing liquid medicine stability.Above to the restriction of sorbester p17 addition, it is intended to While so that sorbester p17 plays suspending and lubrication, being unlikely to content excessively affects the generation of pharmaceutical aerosol, reduces Fine particle dosage.
It is to cause in aerosol preparations as a kind of further technical scheme of above-described medicinal aerosol formulation Active ingredient effectively branch or can be deposited in the bronchus of human body, bronchiole and lung, the momestasone furoate and Fumaric acid good fortune model sieve is micro mist of the median particle diameter obtained Jing after air-flow crushing less than 5 microns.In this programme, due in gas A certain amount of sorbester p17 is with the addition of in sol preparation, although the active ingredient of above median particle diameter has larger surface energy, but It is still to be difficult to adsorb on vessel surface.
Used as a kind of liquefied propellant implementation beneficial to environmental protection, the HFC is HFA 134a, HFA 227 The mixture of any one in both or both.
Meanwhile, the invention also discloses a kind of medical metered dose inhalation aerosol, including medicinal aerosol formulation and for containing The pressurised metered dose inhalers of dress said preparation, the medicinal aerosol formulation that the preparation is provided for one scheme of any of the above.
Above aerosol has used the aerosol preparations that as above any one scheme is provided, due to the aerosol preparations Property, so, this aerosol products can be caused for a long time to keep liquor strength uniform, keep this aerosol so as to reach The purpose of agent properties of product stability.
Used as the further technical scheme of the medical metered dose inhalation aerosol of one of the above, the pressurised metered dose inhalers include Accommodating tank, metering valve and driver, the material of the accommodating tank is magnadure, houses inside tank partially or fully wall coated lining There is perfluoroparaffin high polymer.
More than accommodating tank as aerosol preparations storage container, due to common surface of magnesium aluminium alloy natural oxide film both Thin and soft, low density, surface irregularity easily adsorbs the particulate in medicine, while magnesium, the aluminium element of accommodating tank superficial layer It is into the liquid etc. oozing.In this programme, by accommodating top tank structure partially or fully coated lining perfluoroparaffin high polymer, so, coated lining Position can form the coating of one layer of densification, while the coating surface densification is smooth, be difficult to adsorb drug particles, it is to avoid gas is molten Glue preparation and accommodating tank body contacts, so, in storing process, drug particles therein are not only difficult to be inhaled aerosol preparations It is attached, while aerosol preparations will not also be subject to polluting for the metal ion for discharging, so, can effectively ensure that aerosol preparations performance Stability.
Preferably, it is to reduce impact of the magnadure to aerosol preparations composition as far as possible, the accommodating tank inside is all Wall is applied and is lined with perfluoroparaffin high polymer.
Preferably, as the specific implementation of the perfluoroparaffin high polymer, the perfluoroparaffin high polymer is following material In one kind:PTFE, PEP, PFA, by PTFE, PEP, PFA three in the copolymer that arbitrarily both or three are formed.
The invention has the advantages that:
In this programme, it is used as surfactant by adding sorbester p17 in aerosol preparations, when the sorbester p17 can be long Between keep liquor strength uniform, so as to reach the purpose for increasing liquid medicine stability.Above to the restriction of sorbester p17 addition, it is intended to While so that sorbester p17 plays suspending and lubrication, being unlikely to content excessively affects the generation of pharmaceutical aerosol, reduces Fine particle dosage.
Description of the drawings
Fig. 1 is a kind of structural representation of one specific embodiment of metered dose inhalation aerosol that the present invention is provided.
Reference in Fig. 1 is respectively:1st, tank is housed, 2, metering valve, 3, driver.
Specific embodiment
The invention provides a kind of medicinal aerosol formulation and metered dose inhalation aerosol, for solving:In prior art because Ethanol is slightly soluble in for fumaric acid good fortune model sieve, after long-time is placed, diameter of aspirin particle can be assembled, and cause liquor strength uneven, from And affect the problem of medicine delivery dose uniformity.The medicinal aerosol formulation is remained able to effectively after storage certain hour Ensure its interior minuteness particle dosage, it is ensured that dosage delivered homogeneity.
The scheme that the present invention is provided is to be used as surfactant by adding sorbester p17 in aerosol preparations, while passing through Restriction to sorbester p17 addition, can reach and keep that liquor strength is uniform, increase the purpose of liquid medicine stability for a long time.Tie below The present invention is described in further detail to close embodiment, but the device of the present invention is not limited only to following examples:
Embodiment 1:
A kind of medicinal aerosol formulation, including active component and the liquefied propellant as the active component solvent, institute Active component is stated including momestasone furoate and fumaric acid good fortune model sieve, the liquefied propellant is HFC, also including making an addition to Ethanol and sorbester p17 in liquefied propellant, weight ratio of the sorbester p17 shared by aerosol preparations is 0.01%- 0.1%w/w.
Specifically, for the problem of above-mentioned influence of ethanol medicine delivery dose uniformity, to aerosol system in prior art Add oleic acid in agent, but with the lengthening of aerosol preparations standing time, medicine delivery dose uniformity is gradually deteriorated.
In this programme, it is used as surfactant by adding sorbester p17 in aerosol preparations, when the sorbester p17 can be long Between keep liquor strength uniform, so as to reach the purpose for increasing liquid medicine stability.Above to the restriction of sorbester p17 addition, it is intended to While so that sorbester p17 plays suspending and lubrication, being unlikely to content excessively affects the generation of pharmaceutical aerosol, reduces Fine particle dosage.
In the present embodiment, verified using comparative testing below and add sorbester p17 in aerosol preparations to liquid minuteness particle Metering (FPD) and the impact of delivering metering homogeneity (DCU).
Comparative testing below includes five kinds of prescriptions, and the data in each prescription on the right side of each composition are the composition in aerosol system Shared weight ratio in agent, wherein " to 100% " represent in addition to composition of other specified weights than content, aerosol preparations its He is heptafluoro-propane by composition.
Prescription 1:
Prescription 2:
Prescription 3:
Prescription 4
Prescription 5
Above prescription is contained using PTFE (polytetrafluoroethylene (PTFE)) as the accommodating tank of coating, the aerosol system of above-mentioned formula Agent is carried out Acceleration study June in 40 DEG C under conditions of RH=75%, and using American Pharmacopeia device dosage delivered homogeneity is determined (DCU), minuteness particle dosage (FPD) is determined using Anderson Cascade Impactor.
As a result such as following table:
Knowable to above testing result, using sorbester p17 for 40 DEG C of the prescription of surfactant accelerate to place after June DCU and The indexs such as FPD are superior to use the prescription of oleic acid.DCU and FPD is excellent when sorbester p17 concentration is 0.01%-0.1%w/w. MMAD is significantly increased after i.e. prescription 1 accelerates to place, and illustrates that drug particles particle diameter increases, and causes inhalable active drug dosage FDA is decreased obviously, and illustrates that oleic acid is acted on after placing and declines.
Meanwhile, the present embodiment also discloses a kind of medical metered dose inhalation aerosol, including medicinal aerosol formulation and is used for Contain the pressurised metered dose inhalers of said preparation, the medicinal aerosol formulation that the preparation is provided for one scheme of any of the above.
Above aerosol has used the aerosol preparations that as above any one scheme is provided, due to the aerosol preparations Property, so, this aerosol products can be caused for a long time to keep liquor strength uniform, keep this aerosol so as to reach The purpose of agent properties of product stability.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, used as a kind of above-described medicinal aerosol system The further technical scheme of agent, is the gas for enabling the effective branch of the active ingredient in aerosol preparations or being deposited on human body In pipe, bronchiole and lung, the momestasone furoate and fumaric acid good fortune model sieve are in obtaining Jing after air-flow crushing Micro mist of the value particle diameter less than 5 microns.In this programme, due to the addition of a certain amount of sorbester p17 in aerosol preparations, although with The active ingredient of upper median particle diameter has larger surface energy, but is still difficult to adsorb on vessel surface.
Used as a kind of liquefied propellant implementation beneficial to environmental protection, the HFC is HFA 134a, HFA 227 The mixture of any one in both or both.
Embodiment 3:
The present embodiment is further qualified on the basis of embodiment 1, used as the medical metered dose inhalation aerosol of one of the above Further technical scheme, the pressurised metered dose inhalers include accommodating tank 1, metering valve 2 and driver 3, the accommodating tank 1 Material is magnadure, and partially or fully coating wall is lined with perfluoroparaffin high polymer inside accommodating tank 1.
Tank 1 is housed above as the storage container of aerosol preparations, due to the natural oxide film of common surface of magnesium aluminium alloy Not only thin but also soft, low density, surface irregularity easily adsorbs the particulate in medicine, while magnesium, the aluminium of the accommodating superficial layer of tank 1 Element etc. can ooze into the liquid.In this programme, by the accommodating inwall of tank 1 partially or fully coated lining perfluoroparaffin high polymer, so, Coated lining position can form the coating of one layer of densification, while the coating surface densification is smooth, be difficult to adsorb drug particles, it is to avoid Aerosol preparations and the body contacts of accommodating tank 1, so, in storing process, drug particles therein are not only not for aerosol preparations It is easily adsorbed, while aerosol preparations will not also be subject to polluting for the metal ion for discharging, so, can effectively ensure that aerosol system The stability of agent performance.
In the present embodiment, using comparative testing below checking in the inner surface coated lining perfluoroparaffin high polymer of accommodating tank 1 in it The impact of aerosol preparations composition, the data in following prescription on the right side of each composition are the shared weight in aerosol preparations of the composition Amount ratio, wherein " to 100% " represents that the other compositions of aerosol preparations are seven in addition to composition of other specified weights than content Fluoro-propane.Wherein, the material of accommodating tank 1 for being used to contain aerosol preparations in the aerosol is magnadure.
Containing momestasone furoate and formoterol fumarate micro mist and propellant HFA227e (HFC) aerosol, prescription is such as Under:
The aerosol of above-mentioned formula is carried out Acceleration study June in 40 DEG C under conditions of RH=75%, is determined in accommodating tank 1 Surface drug residual quantity, assay method is continuously to spray aerosol up to spraying without liquid, by accommodating tank 1 in the dry ice bath Freezing, then accommodating tank is cut, to remove metering valve 2 and take apart, the cleaning accommodating inner surface of tank 1 determines furancarboxylic acid not after constant volume with HPLC The residual quantity of meter Song and formoterol fumarate obtains following data:
Container tank PTFE Not coating
Momestasone furoate (mg/ bottles) 0.07 1.86
Formoterol fumarate (mg/ bottles) 0.10 0.52
Wherein, the PTFE shown in above table represents that whole inner surfaces of accommodating tank 1 are applied and is lined with polytetrafluorethylecoatings coatings; Shown not coating represents the inner surface directly contact of aerosol preparations and accommodating tank 1, i.e., not in the painting of the accommodating inner surface setting of tank 1 Layer.
The aerosol of above-mentioned formula, in 40 DEG C, is carried out Acceleration study June under conditions of RH=75%, determines magnesium in liquid The content of ion, aluminium ion and Formoterol hydrolysate obtains following data:
Wherein, the PTFE shown in above table represents that whole inner surfaces of accommodating tank 1 are applied and is lined with polytetrafluorethylecoatings coatings; Shown not coating represents the inner surface directly contact of aerosol preparations and accommodating tank 1, i.e., not in the painting of the accommodating inner surface setting of tank 1 Layer.
Embodiment 4:
The present embodiment is further qualified on the basis of embodiment 1, it is preferred that to reduce magnadure as far as possible to gas The impact of sol preparation composition, the whole walls in the inside of the accommodating tank 1 are applied and are lined with perfluoroparaffin high polymer.
Preferably, as the specific implementation of the perfluoroparaffin high polymer, the perfluoroparaffin high polymer is following material In one kind:PTFE, PEP, PFA, by PTFE, PEP, PFA three in the copolymer that arbitrarily both or three are formed.
Above content is to combine the further description that specific preferred embodiment is made to the present invention, it is impossible to assert this The specific embodiment of invention is confined to these explanations.For general technical staff of the technical field of the invention, The other embodiment drawn under without departing from technical scheme, should be included in protection scope of the present invention.

Claims (7)

1. a kind of medicinal aerosol formulation, including active component and the liquefied propellant as the active component solvent, it is described Active component includes momestasone furoate and fumaric acid good fortune model sieve, it is characterised in that the liquefied propellant is HFC, is also wrapped The ethanol and sorbester p17 made an addition in liquefied propellant is included, weight ratio of the sorbester p17 shared by aerosol preparations is 0.01%-0.1%w/w.
2. a kind of medicinal aerosol formulation according to claim 1, it is characterised in that the momestasone furoate and fumaric acid Good fortune model sieve is micro mist of the median particle diameter obtained Jing after air-flow crushing less than 5 microns.
3. a kind of medicinal aerosol formulation according to claim 1, it is characterised in that the HFC be HFA 134a, The mixture of any one in both HFA 227 or both.
4. a kind of medical metered dose inhalation aerosol, including medicinal aerosol formulation and the pressurised metered suction for containing said preparation Device, it is characterised in that the medicinal aerosol formulation that the preparation is provided for any one in claims 1 to 3.
5. a kind of medical metered dose inhalation aerosol according to claim 4, it is characterised in that the pressurised metered dose inhalers Including accommodating tank (1), metering valve (2) and driver (3), the material of the accommodating tank (1) is magnadure, is housed in tank (1) Partially or fully coating wall is lined with perfluoroparaffin high polymer in portion.
6. a kind of medical metered dose inhalation aerosol according to claim 4, it is characterised in that the accommodating tank (1) is internal Whole walls are applied and are lined with perfluoroparaffin high polymer.
7. a kind of medical metered dose inhalation aerosol according to claim 4, it is characterised in that the perfluoroparaffin high polymer is One kind in following material:PTFE, PEP, PFA, by PTFE, PEP, PFA three in the copolymerization that arbitrarily both or three are formed Thing.
CN201611236776.9A 2016-12-28 2016-12-28 Medical aerosol preparation and quantitative inhalation aerosol Active CN106619658B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1186447A (en) * 1995-04-14 1998-07-01 葛兰素惠尔康公司 Metered dose inhaler for slameterol
WO2008102128A2 (en) * 2007-02-19 2008-08-28 Cipla Limited Pharmaceutical combinations of at least two bronchodilators or of a bronchodilator with a corticosteroid
CN101856362A (en) * 2001-08-28 2010-10-13 先灵公司 Pharmaceutical compositions for the treatment of asthma
CN104225739A (en) * 2014-09-30 2014-12-24 四川普锐特医药科技有限责任公司 Medical quantitative inhalation aerosol

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1186447A (en) * 1995-04-14 1998-07-01 葛兰素惠尔康公司 Metered dose inhaler for slameterol
CN101856362A (en) * 2001-08-28 2010-10-13 先灵公司 Pharmaceutical compositions for the treatment of asthma
WO2008102128A2 (en) * 2007-02-19 2008-08-28 Cipla Limited Pharmaceutical combinations of at least two bronchodilators or of a bronchodilator with a corticosteroid
CN104225739A (en) * 2014-09-30 2014-12-24 四川普锐特医药科技有限责任公司 Medical quantitative inhalation aerosol

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Address before: No.15 Gaopeng Avenue, high tech Zone, Chengdu, Sichuan 610000

Patentee before: Sichuan Pu et Pharmaceutical Co.,Ltd.

CP02 Change in the address of a patent holder