Classifications

• • 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
  • A61K9/0078—Sprays 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
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P11/00—Drugs for disorders of the respiratory system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P11/00—Drugs for disorders of the respiratory system
  • A61P11/06—Antiasthmatics

Definitions

• the present invention relates to pharmaceutical preparations for inhalation containing as the sole active ingredient a compound of formula 1
• X denotes an anion which is preferably selected from the group consisting of chloride, bromide, iodide, sulfate, phosphate, methanesulfonate, nitrate, maleate, acetate, citrate, fumarate, tartrate, oxalate, succinate, benzoate and p-toluenesulfonate Solvent ethanol or mixtures of ethanol and water, at least one pharmacologically acceptable acid and optionally further pharmacologically acceptable excipients and / or complexing agents.
• the present invention is concerned with inhalable liquid drug formulations of these compounds, wherein the liquid formulations of the invention must meet high quality standards.
• the formulations according to the invention can be inhaled orally or pernasally.
• the application of a liquid, dispensing with propellant gases, formulation by means of suitable inhalers offers.
• the inhalative administration of such a formulation can be carried out both orally and nasally.
• Particularly suitable are those inhalers which can nebulise a small amount of a liquid formulation in the therapeutically necessary dosage within a few seconds in a therapeutically inhalable aerosol.
• nebulizers which already contain an amount of less than 100 microliters, preferably less than 50 microliters, more preferably less than 20 microliters of active solution, preferably one stroke or two strokes, to form an aerosol having an average particle size of less than 20 microns , preferably less than 10 micrometers, can be so aerosolized that the inhalable fraction of the aerosol already corresponds to the therapeutically effective amount.
• Such a device for the propellant-free administration of a metered amount of a liquid medicament for inhalation use, for example, in International Patent Application WO 91/14468 "Atomizing Device and Methods" and in WO 97/12687, there Figures 6a and 6b and the accompanying description , described in detail.
• a drug solution is transferred by means of high pressure of up to 600 bar into a respirable aerosol and sprayed.
• the solution formulations are stored in a reservoir.
• the active compound formulations used have sufficient storage stability and at the same time are such that they can be applied directly for medical purposes as possible without further manipulation. Furthermore, they must not contain components which may interact with the inhaler in such a way that the inhaler or the pharmaceutical grade of the solution or the aerosol produced could be damaged.
• a special nozzle is used, as described, for example, WO 94/07607 or WO 99/16530. Both are hereby incorporated by reference.
• the active substance formulations according to the invention must also have sufficient pharmaceutical quality, ie they should be pharmaceutically stable over a storage period of a few years, preferably of at least one year, more preferably of two years.
• These propellant-free solution formulations must also be able to be atomized under pressure by means of an inhaler, wherein the mass discharged in the generated aerosol is reproducibly within a defined range.
• anion X ⁇ is selected from chloride, bromide, iodide from the group, sulfate, phosphate, methanesulfonate, nitrate, maleate, acetate, citrate, fumarate, Tartrate, oxalate, succinate, benzoate and p-toluenesulfonate.
• the salts of formula 1 are used, wherein X ⁇ is an anion selected from the group consisting of chloride, bromide, 4-toluenesulfonate and methanesulfonate.
• references to the compound of formula 1 in the context of the present invention always include all possible amorphous and crystalline modifications of this compound. References to the compound of formula 1 in the context of the present invention furthermore include all possible solvates and hydrates which can be formed by this compound.
• the compound ⁇ _ is dissolved in ethanol or in mixtures of ethanol and water.
• the formulation preferably contains only a single salt of formula 1.
• the formulation may also be a mixture of different salts of formula 1 included.
• Formulations containing active ingredients other than those of formula 1 are not the subject of the invention.
• the pharmaceutical preparation is about 0.1 to 1150 mg per 100 ml, preferably about 1 to 1000 mg per 100 ml. More preferably, 100 ml of the formulations according to the invention contain about 5 to about 800 mg V.
• Is used as compound of formula 1 according to the invention that particularly preferred compound used in which X "for the bromide, the proportion of 1 according to the invention at about 0.1 to 1390 mg per 100 ml, preferably about 1, 2-1210 mg per 100 ml of pharmaceutical preparation Particularly preferably, 100 ml of the formulations according to the invention contain about 6 to 970 mg of I-.
• Formulations according to the invention contain as solvent pure ethanol or mixtures of ethanol and water. If ethanol-water mixtures are used, the percentage by weight of ethanol in these mixtures is preferably in the range between 5 and 99% ethanol, particularly preferably in the range from 10 to 96% ethanol. For the purposes of the invention, very particular preference is given to using ethanol-water mixtures used as solvent between 50 and 92%, more preferably between 69 and 91% ethanol.
• co-solvents can be used in addition to ethanol and water. According to the invention, however, a further solvent is not used.
• the formulations of the invention contain pharmacologically acceptable inorganic or organic acids for adjusting the pH.
• the pH of the formulations according to the invention is preferably in the range from 2.5 to 6.5, preferably from 3.0 to 5.0, particularly preferably from about 3.5 to 4.5.
• Examples of preferred inorganic acids are selected from the group consisting of hydrochloric acid, hydrobromic acid, nitric acid, sulfuric acid and phosphoric acid.
• organic acids are selected from the group consisting of ascorbic acid, citric acid, malic acid, tartaric acid, maleic acid, succinic acid, fumaric acid, acetic acid, formic acid and Propionic acid.
• Preferred inorganic acids are hydrochloric acid and sulfuric acid, wherein the hydrochloric acid is of particular importance according to the invention.
• organic acids ascorbic acid, fumaric acid and citric acid are preferred, with citric acid being particularly preferred according to the invention.
• mixtures of the abovementioned acids in particular in the case of acids which, in addition to their acidification properties, also possess other properties, for example as flavorings or antioxidants, such as, for example, citric acid or ascorbic acid.
• pharmacologically acceptable bases can be used to accurately titrate out the pH.
• Suitable bases are, for example, alkali metal hydroxides and alkali metal carbonates. Preferred alkali ion is sodium. If such bases are used, care should be taken that the resulting salts, which are then included in the finished drug formulation, are pharmacologically acceptable with the above acid.
• the formulations according to the invention may contain complexing agents as further constituents.
• complexing agents are understood to mean molecules capable of complexing. Cations, more preferably metallic cations, are preferably to be complexed by these compounds.
• the formulations according to the invention contain as complexing agents preferably editic acid (EDTA) or a known salt thereof, e.g. Sodium EDTA, or disodium EDTA. Preference is given to using sodium edetate, if appropriate in the form of its hydrates, particularly preferably in the form of its dihydrate.
• complexing agents are used in the formulations according to the invention, their content is preferably in a range from 0.1 to 3 mg per 100 ml, more preferably in a range from 0.2 to 2 mg per 100 ml of the formulation according to the invention.
• the formulations according to the invention particularly preferably contain a complexing agent in an amount of about 0.9 to 1.1 mg per 100 ml of the formulation according to the invention.
• the formulation according to the invention may be added further pharmacologically acceptable excipients.
• each pharmacologically acceptable and therapeutically useful Understood substance that is not an active ingredient, but can be formulated together with the active ingredient in the pharmacologically suitable solvent to improve the qualitative properties of the drug formulation.
• These substances preferably do not develop any appreciable or at least no undesirable pharmacological effect in the context of the intended therapy.
• the excipients and additives include, for example, stabilizers, antioxidants and / or preservatives that extend the useful life of the finished drug formulation as well as flavorings, vitamins and / or other additives known in the art.
• the additives also include pharmacologically acceptable salts such as sodium chloride.
• Preferred excipients include antioxidants, such as ascorbic acid, if not already used for pH adjustment, vitamin A, vitamin E, tocopherols, and similar vitamins or provitamins found in the human organism.
• Preservatives may be used to protect the formulation from contamination with pathogenic germs. Suitable preservatives are those known in the art, in particular
• Benzalkonium chloride or benzoic acid or benzoates such as sodium benzoate in the concentration known from the prior art.
• the formulation of the invention benzalkonium chloride is added.
• the amount of benzalkonium chloride is between 1 and 50 mg per 100 ml formulation, preferably about 7 to 15 mg per 100 ml, more preferably about 9 to 12 mg per 100 ml of the formulation according to the invention.
• particularly preferred according to the invention are formulations which contain no preservatives.
• Preferred formulations contain, in addition to ethanol or ethanol-water mixtures as solvents and the compounds of formula 1 only benzalkonium chloride, disodium edetate and the acid necessary for adjusting the pH.
• the nebulizer sprays a defined volume of the drug formulation using high pressures through small nozzles to produce inhalable aerosols.
• the preferred atomizer of an upper housing part, a pump housing, a nozzle, a locking mechanism, a spring housing, a spring and a reservoir characterized by
• a pump housing which is fixed in the upper housing part, and at its one end a nozzle body with the nozzle or
• a spring housing with the spring located therein, which is rotatably mounted on the upper housing part by means of a rotary bearing,
• the hollow piston with valve body corresponds to a disclosed in WO 97/12687 devices. It partially protrudes into the cylinder of the pump housing and is arranged axially displaceably in the cylinder.
• FIGS. 1-4 in particular FIG. 3, and the associated parts of the description of the above-mentioned.
• International Patent Application Reference. The hollow piston with
• Valve body exerts on its high pressure side at the time of release of the spring a pressure of 5 to 60 MPa (about 50 to 600 bar), preferably 10 to 60 MPa (about 100 to 600 bar) on the fluid, the measured drug solution from.
• Volumes of from 10 to 50 microliters are preferred, volumes of from 10 to 20 microliters are particularly preferred, and a volume of from 10 to 15 microliters per stroke is very particularly preferred.
• the valve body is preferably attached to the end of the hollow piston, which faces the nozzle body.
• the nozzle in the nozzle body is preferably microstructured, ie produced by microtechnology. Microstructured nozzle bodies are disclosed, for example, in WO-99/16530; This document is hereby incorporated by reference, in particular to the figure 1 and its description disclosed therein.
• the nozzle body consists e.g. of two fixed plates of glass and / or silicon, at least one plate of which has one or more microstructured channels connecting the nozzle inlet side to the nozzle outlet side.
• At the nozzle outlet side at least one round or non-round aperture is 2 to 10 microns deep and 5 to 15 microns wide, with the depth preferably being 4.5 to 6.5 microns and the length being 7 to 9 microns.
• the jet directions of the nozzles in the nozzle body can be parallel to one another or they are inclined towards one another in the direction of the nozzle opening.
• the jet directions may be inclined at an angle of 20 degrees to 160 degrees to each other, preferably an angle of 60 to 150 degrees, particularly preferably 80 to 100 °.
• the nozzle orifices are preferably located at a distance of 10 to 200 microns, more preferably at a distance of 10 to 100 microns, more preferably 30 to 70 microns. Most preferred are 50 microns.
• the liquid pharmaceutical preparation meets as already mentioned with an inlet pressure of up to 600 bar, preferably 200 to 300 bar to the nozzle body and is atomized via the nozzle openings in an inhalable aerosol.
• the preferred particle sizes of the aerosol are up to 20 microns, preferably 3 to 10 microns.
• the locking work contains a spring, preferably a cylindrical helical compression spring, as a memory for the mechanical energy.
• the spring acts on the output flange as a jump piece whose movement is determined by the position of a locking member.
• the path of the output flange is precisely limited by an upper and a lower stop.
• the spring is preferably tensioned via a force-transmitting gear, for example a screw thrust gear, by an external torque which, when the housing upper part is rotated, is moved against the gear Spring housing is produced in the lower housing part.
• the upper housing part and the output flange contain a single or multi-start wedge gear.
• the locking member with engaging locking surfaces is arranged annularly around the output flange.
• the ring is arranged in a plane perpendicular to the atomizer axis. After tensioning the spring, the locking surfaces of the locking member push in the path of the output flange and prevent the relaxation of the spring.
• the Sprerrglied is triggered by a button.
• the release button is connected or coupled to the locking member.
• the shutter button is parallel to the ring plane, and preferably in the atomizer, moved; while the deformable ring is deformed in the ring plane. Constructive details of the locking mechanism are described in WO 97/20590.
• the lower housing part is pushed in the axial direction over the spring housing and covers the storage, the drive of the spindle and the reservoir for the fluid.
• the lower housing part takes the spring housing.
• the spring is compressed and tensioned via the screw slide, and the lock engages automatically.
• the angle of rotation is preferably an integer fraction of 360 degrees, e.g. 180 degrees.
• the driven part is displaced in the upper housing part by a predetermined path, the hollow piston is withdrawn within the cylinder in the pump housing, whereby a subset of the fluid from the reservoir is sucked into the high-pressure chamber in front of the nozzle.
• the storage container contains the aerosol preparation according to the invention.
• the sputtering process is initiated by lightly pressing the shutter button.
• the blocking mechanism clears the way for the stripping section.
• the tensioned spring pushes the piston into the cylinder of the pump housing.
• the fluid exits the nozzle of the atomizer in atomized form.
• the components of the atomizer are made of a functionally suitable material.
• the housing of the atomizer and, as far as the function permits, other parts are preferably made of plastic, e.g. by injection molding. Physiologically harmless materials are used for medical purposes.
• FIGS. 6 a / b of WO 97/12687 describe the nebuliser (Respimat®) with which the aqueous aerosol preparations according to the invention can advantageously be inhaled.
• FIG. 6 a shows a longitudinal section through the atomizer with the spring tensioned
• FIG. 6 b shows a longitudinal section through the atomizer with the spring relaxed.
• the upper housing part (51) contains the pump housing (52), at the end of which the holder (53) for the atomizer nozzle is mounted. In the holder is the nozzle body (54) and a filter (55).
• the hollow piston (57) fastened in the output flange (56) of the locking mechanism projects partially into the cylinder of the pump housing. At its end, the hollow piston carries the valve body (58). The hollow piston is sealed by means of the seal (59).
• the stop (60) on which the output flange rests with a relaxed spring.
• the stop (61) On which the output flange rests when the spring is tensioned. After tensioning the spring, the locking member (62) slides between the stop (61) and a
• the release button (64) is in communication with the locking member.
• the upper housing part ends in the mouthpiece (65) and is closed with the attachable protective cap (66).
• the spring housing (67) with compression spring (68) is rotatably supported by means of the snap lugs (69) and pivot bearing on the upper housing part.
• the lower housing part (70) is pushed.
• the replaceable reservoir (71) for the fluid (72) to be atomized is closed with the stopper (73) through which the hollow piston protrudes into the reservoir and with its end immersed in the fluid (stock of drug solution).
• the spindle (74) for the mechanical counter is mounted in the lateral surface of the spring housing.
• the drive pinion (75) At the end of the spindle, which faces the upper housing part, there is the drive pinion (75). The rider (76) sits on the spindle.
• nebulizer described above is suitable for the invention
• Aerosol preparations to nebulise a suitable for inhalation aerosol.
• the administration of the medicament formulation according to the invention is carried out using the nebuliser described above, in which an exchangeable reservoir containing the pharmaceutical formulation according to the invention within a gas- and liquid-tight container, as described in WO 99/43571, is used.
• an exchangeable reservoir containing the pharmaceutical formulation according to the invention within a gas- and liquid-tight container as described in WO 99/43571.
• a gas- and liquid-tight container is particularly preferably used as a replaceable cartridge for a medicinal liquid in a propellant-free atomizer, which, as disclosed in WO 99/43571, has a withdrawal nozzle in the form of a hollow piston, wherein the container includes
• a foil bag (1 1, 21, 31) which is closed at both ends, wherein at least one end by a weld (13, 23, 32) is closed, which is substantially transverse to the bag axis and the foil bag at a differential pressure between the interior of the container and its surroundings below 300 hPa (300 mbar) is deformable by the external pressure,
• a dimensionally stable flange (15, 25, 34) which is tightly attached to the foil bag and as a releasable connecting element for attaching the
• Container is formed on a withdrawal nozzle (67),
• a sealing point (56, 64, 74) is formed in the guide channel and / or a press fit (55, 66, 77) which surrounds the sampling nozzle
• the formulation according to the invention nebulised using the method described above (Respimat ®), the mass expelled, in at least 97%, preferably at least 98% of all actuations of the inhaler (puffs) a defined quantity with a tolerance of not more than 25%, preferably from 20 % of this amount.
• a defined quantity with a tolerance of not more than 25%, preferably from 20 % of this amount.
• between 5 and 30 mg of formulation per stroke are applied as a defined mass, more preferably between 5 and 20 mg.
• the formulation according to the invention can also be nebulized by means of inhalers other than those described above, for example jet stream inhalers.
• the present invention further relates to an inhalation kit consisting of one of the above-described pharmaceutical preparations according to the invention and an inhaler suitable for nebulization of this pharmaceutical preparation.
• the present invention preferably relates to an inhalation kit consisting of one of the pharmaceutical preparations according to the invention the inhaler described above and the Respimat ® described above.
• formulations according to the invention are prepared by analogy with processes known in the prior art, for example by dissolving the respective formulation constituents in the solvent ethanol or ethanol / water.

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• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Chemical & Material Sciences (AREA)
• Pulmonology (AREA)
• Veterinary Medicine (AREA)
• Animal Behavior & Ethology (AREA)
• Medicinal Chemistry (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Pharmacology & Pharmacy (AREA)
• Life Sciences & Earth Sciences (AREA)
• Organic Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Dispersion Chemistry (AREA)
• Otolaryngology (AREA)
• Epidemiology (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Medicinal Preparation (AREA)

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• 2005
  • 2005-01-12 DE DE102005001297A patent/DE102005001297A1/de not_active Withdrawn
• 2006
  • 2006-01-02 CA CA002593272A patent/CA2593272A1/en not_active Abandoned
  • 2006-01-02 WO PCT/EP2006/050002 patent/WO2006074970A1/de active Application Filing
  • 2006-01-02 EP EP06700053A patent/EP1838282A1/de not_active Withdrawn
  • 2006-01-02 JP JP2007550779A patent/JP2008526917A/ja active Pending
  • 2006-01-04 US US11/326,226 patent/US20060153777A1/en not_active Abandoned

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