WO2013187451A1 - 貼付剤 - Google Patents
貼付剤 Download PDFInfo
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- WO2013187451A1 WO2013187451A1 PCT/JP2013/066273 JP2013066273W WO2013187451A1 WO 2013187451 A1 WO2013187451 A1 WO 2013187451A1 JP 2013066273 W JP2013066273 W JP 2013066273W WO 2013187451 A1 WO2013187451 A1 WO 2013187451A1
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- WIPO (PCT)
- Prior art keywords
- weight
- adhesive layer
- acid
- patch
- styrene
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/27—Esters, e.g. nitroglycerine, selenocyanates of carbamic or thiocarbamic acids, meprobamate, carbachol, neostigmine
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- 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
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7023—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms
- A61K9/703—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches
- A61K9/7038—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/325—Carbamic acids; Thiocarbamic acids; Anhydrides or salts thereof
-
- 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
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7023—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms
- A61K9/703—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches
- A61K9/7038—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer
- A61K9/7046—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer the adhesive comprising macromolecular compounds
- A61K9/7053—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer the adhesive comprising macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds, e.g. polyvinyl, polyisobutylene, polystyrene
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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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
Definitions
- the present invention relates to a patch containing rivastigmine. More specifically, the present invention relates to a patch having high skin permeability of rivastigmine, good transdermal absorbability, and low skin irritation.
- Alzheimer-type dementia causes neuronal cell death and neurofibrillary tangles and senile plaque formation in the cerebral cortex due to extracellular ⁇ -amyloid deposition, cerebral cortex atrophy, decreased cerebral glucose utilization, parietal lobe, temporal It is characterized by causing a decline in perception in the cortex and prefrontal cortex and causing progressive cognitive decline.
- Dementia patients are 65 years old or older and are about 5% of the population, but 40% of them are said to be Alzheimer type, and there are the most patients among the diseases that cause neuronal loss and degeneration. It can be said that this is a disease that can become increasingly serious in an aging society in the future.
- the effect of rivastigmine, 3-[(1S) -1- (dimethylamino) ethyl] phenyl N-ethyl-N-methylcarbamate, on Alzheimer's dementia is mainly due to inhibition of acetylcholinesterase and butyrylcholinesterase in the brain. It is thought to be due to the activation of the cholinergic nervous system in the brain.
- Ixelon Patch a patch of rivastigmine
- the patch preparation can suppress side effects such as vomiting, and can suppress the rapid rise in blood concentration. Have a lot.
- Non-patent Document 1 Non-patent Document 1
- the moisturizing function is reduced due to a decrease in the production of sebum, and the skin barrier function also tends to decrease.
- Skin symptoms are likely to occur.
- a patch having strong skin irritation is applied to such an elderly patient, there is a very high possibility that some harmful phenomenon will occur in the skin.
- a transdermal preparation (Patent Document 1) in which rivastigmine is contained together with an antioxidant in a matrix made of polyacrylic acid ester or polymethacrylic acid ester, backing layer (support) ) And a rivastigmine storage layer containing polyacrylic acid ester, polymethacrylic acid ester, polyisobutylene, polybutene, styrene-isoprene-styrene block copolymer, etc., an adhesive layer containing a silicone polymer and a tackifier
- Patent Document 2 a skin-absorbing preparation
- the present inventors tried to develop a patch containing rivastigmine as a drug using the adhesive layer components described in Patent Documents 3 to 6, for example.
- a patch having a conventional pressure-sensitive adhesive layer containing a rubber-based pressure-sensitive adhesive or the like sufficient release of rivastigmine cannot be ensured.
- it is usually necessary to add a tackifier in order to impart sufficient skin tackiness but it has also been found that skin irritation occurs due to the tackifier.
- an object of the present invention is to provide a patch having sufficient skin adhesiveness, low skin irritation, good skin permeability of rivastigmine, and sufficient transdermal absorbability. It is to provide.
- the present inventors used a thermoplastic elastomer and a non-volatile hydrocarbon oil having a specific weight ratio with respect to the elastomer as a component for forming an adhesive layer,
- a thermoplastic elastomer and a non-volatile hydrocarbon oil having a specific weight ratio with respect to the elastomer as a component for forming an adhesive layer,
- the present invention was completed.
- the present invention relates to the following [1] to [13].
- a patch in which an adhesive layer for holding a drug is formed on a support The pressure-sensitive adhesive layer is Thermoplastic elastomers, A non-volatile hydrocarbon oil of more than 50 parts by weight and less than or equal to 800 parts by weight with respect to 100 parts by weight of the elastomer, and rivastigmine or a salt thereof,
- the adhesive layer may further contain a tackifier, and the content of the tackifier in the adhesive layer is 10% by weight or less.
- a patch in which a storage layer for holding a drug and an adhesive layer are formed on a support The storage layer includes rivastigmine or a salt thereof,
- the pressure-sensitive adhesive layer is A thermoplastic elastomer, and a non-volatile hydrocarbon oil of more than 50 parts by weight and not more than 800 parts by weight with respect to 100 parts by weight of the elastomer;
- the adhesive layer may further contain a tackifier, and the content of the tackifier in the adhesive layer is 10% by weight or less.
- the patch of the present invention has good skin permeability of rivastigmine and exhibits excellent transdermal absorbability. Moreover, it has sufficient skin adhesiveness when applied to the skin and has low skin irritation.
- the adhesive patch of the present invention (the adhesive patch of the first aspect) is formed by forming a pressure-sensitive adhesive layer for holding a drug on a support, and the pressure-sensitive adhesive layer is a thermoplastic elastomer, 50 parts by weight based on 100 parts by weight of the elastomer. It contains non-volatile hydrocarbon oil exceeding 800 parts by weight and not more than 800 parts by weight, and rivastigmine or a salt thereof, and may contain a tackifier, and its content in the adhesive layer is 10% by weight or less. .
- the patch of the present invention contains rivastigmine or a salt thereof as an active ingredient to be transdermally absorbed in the adhesive layer.
- rivastigmine salts include rivastigmine and monocarboxylic acids such as acetic acid, propionic acid and butyric acid; dicarboxylic acids such as oxalic acid, malonic acid, fumaric acid, succinic acid and maleic acid; hydroxyacetic acid, lactic acid and apple Hydroxycarboxylic acids such as acids, citric acid and tartaric acid; carbonic acid; alkanesulfonic acids such as methanesulfonic acid and ethanesulfonic acid; acid addition salts with organic acids such as amino acids such as glutamic acid, hydrochloric acid, hydrobromic acid, sulfuric acid, Examples include acid addition salts with inorganic acids such as nitric acid and phosphoric acid. Among these, rivastigmine tartrate is preferable from the viewpoint of availability and dispersibility in the pressure-sensitive adhesive layer.
- one or more kinds selected from the group consisting of the above-mentioned rivastigmine and a salt thereof can be used.
- the content of rivastigmine in the patch is not particularly limited, but preferably 1% by weight to 30% by weight, more preferably 2.5% in the pressure-sensitive adhesive layer in consideration of dispersibility and transdermal absorbability in the pressure-sensitive adhesive layer. % To 25% by weight, most preferably 4% to 20% by weight. In consideration of the peel resistance of the patch during bathing, it is preferably 15% by weight or less.
- thermoplastic elastomer used in the present invention is an elastomer that exhibits fluidity when softened and exhibits fluidity, and returns to a rubber-like elastic body when cooled.
- styrene-based thermoplastic elastomers, particularly styrene-based block copolymers are preferably used.
- styrene block copolymers as thermoplastic elastomers include styrene-butadiene block copolymers, styrene-butadiene-styrene block copolymers, styrene-isoprene block copolymers, and styrene-isoprene-styrene blocks.
- Copolymer styrene-ethylene / butylene block copolymer, styrene-ethylene / butylene-styrene block copolymer, styrene-ethylene / propylene block copolymer, styrene-ethylene / propylene-styrene block copolymer, styrene- Examples include isobutylene block copolymers and styrene-isobutylene-styrene block copolymers.
- ethylene / butylene represents a copolymer block of ethylene and butylene
- ethylene / propylene represents a copolymer block of ethylene and propylene.
- styrene-isoprene-styrene block copolymers and styrene are used from the viewpoints of sufficient skin adhesiveness and low skin irritation, as well as availability and handling properties of patch products.
- styrene-isoprene-styrene block copolymers and styrene are used from the viewpoints of sufficient skin adhesiveness and low skin irritation, as well as availability and handling properties of patch products.
- isoprene block copolymers is preferably used.
- the use of a mixture of a styrene-isoprene-styrene block copolymer and a styrene-isoprene block copolymer is preferable from the viewpoint of tackiness.
- the mixing ratio of the styrene-isoprene block copolymer is preferably 10/90 to 82/18, more preferably 20/80 to 75/25, by weight. More preferred is 30/70 to 70/30.
- the styrene-isoprene-styrene block copolymer preferably has a styrene content of 5 wt% to 60 wt% in the copolymer, and has a styrene content of 10 wt% to 50 wt%. More preferred. Further, those having a weight average molecular weight measured by gel filtration chromatography of 20,000 to 500,000 are preferred, and those having a weight average molecular weight of 30,000 to 300,000 are more preferred.
- the styrene-isoprene block copolymer preferably has a styrene content of 5 to 50% by weight, more preferably 10 to 40% by weight.
- styrene-isoprene-styrene block copolymer and styrene-isoprene block copolymer preferably has a weight average molecular weight of 20,000 to 500,000 as measured by gel filtration chromatography, and is 30,000. More preferred are those of up to 300,000.
- styrene-isoprene-styrene block copolymer and the styrene-isoprene block copolymer copolymers produced by a method known per se can be used.
- styrene-isoprene-styrene block copolymer and the styrene-isoprene block copolymer commercially available products that satisfy the above characteristics can be used.
- a mixture of a styrene-isoprene-styrene block copolymer and a styrene-isoprene block copolymer is also commercially available.
- a styrene-isoprene-styrene block copolymer and a styrene-isoprene block copolymer satisfying the above characteristics Can be suitably used as a commercial product of a mixture in which is mixed at the above mixing ratio.
- Commercially available products include, for example, “KRATON D1161”, “KRATON D1163”, “KRATON D1113”, “KRATON D1119” manufactured by KRATON POLYMERS, “JSR SIS5229”, “JSR SIS5403”, “JSR SIS05” manufactured by JSR. Etc.
- the thermoplastic elastomer content in the adhesive layer of the patch of the present invention is preferably 8% by weight or more, more preferably 10% by weight or more, still more preferably 12% by weight or more, and further preferably 15% by weight. More preferably, it is 18% by weight or more, particularly preferably 20% by weight or more, particularly preferably 24% by weight or more, and most preferably 28% by weight or more. Moreover, 66 weight% or less is preferable, More preferably, it is 65 weight% or less, More preferably, it is 64 weight% or less, More preferably, it is 49 weight% or less, More preferably, it is 39 weight% or less.
- the thermoplastic elastomer content in the pressure-sensitive adhesive layer can be 8% to 66% by weight, more preferably 10% to 64% by weight, and particularly preferably 12%. % By weight to 49% by weight, most preferably 15% to 38% by weight.
- the pressure-sensitive adhesive layer contains a nonvolatile hydrocarbon oil.
- the non-volatile hydrocarbon oil is preferably a chain saturated hydrocarbon having about 20 to 40 carbon atoms or a chain unsaturated hydrocarbon having about 20 to 40 carbon atoms, such as liquid paraffin, squalene, squalane, pristane, etc. Can be mentioned. Among these, liquid paraffin is more preferable from the viewpoint of easy availability.
- the liquid paraffin is a colorless and odorless liquid mixture of alkanes having 20 or more carbon atoms.
- a liquid paraffin that conforms to the standards prescribed in the Japanese Pharmacopoeia, the US Pharmacopoeia, and the like can be preferably used.
- the non-volatile hydrocarbon oil preferably has a high viscosity, and it is particularly preferable to use liquid paraffin having a high viscosity from the viewpoint of stickiness.
- the non-volatile hydrocarbon oil preferably has a kinematic viscosity at 40 ° C. of 60 mm 2 / s or more, more preferably 70 mm 2 / s or more, and particularly preferably 80 mm 2 / s or more.
- the upper limit of kinematic viscosity is not specifically limited, For example, 500 mm ⁇ 2 > / s or less is preferable and 250 mm ⁇ 2 > / s or less is more preferable from viewpoints of the ease of handling, availability, etc.
- the patch of the present invention contains the above-described nonvolatile hydrocarbon oil in a weight ratio of more than 50 parts by weight and not more than 800 parts by weight with respect to 100 parts by weight of the thermoplastic elastomer.
- the content of the non-volatile hydrocarbon oil with respect to 100 parts by weight of the thermoplastic elastomer exceeds 800 parts by weight, it becomes difficult to maintain the shape of the pressure-sensitive adhesive layer.
- the content of the non-volatile hydrocarbon oil is 50 parts by weight or less, there is a tendency that sufficient adhesiveness to the skin cannot be obtained due to the adhesive becoming too hard, particularly following the movement of the skin at the time of application. It may worsen and fall off during application.
- the content of the nonvolatile hydrocarbon oil in the pressure-sensitive adhesive layer is preferably 51 parts by weight to 800 parts by weight, more preferably 60 parts by weight to 600 parts by weight with respect to 100 parts by weight of the thermoplastic elastomer. Particularly preferred is 70 to 500 parts by weight. Even within this range, if the content of the non-volatile hydrocarbon oil is large, the peel stress tends to be low in the adhesive performance, and the adhesive sticks out during storage or pasting. There is a tendency that defects that adhere to materials and clothes tend to occur. On the other hand, when the content of the non-volatile hydrocarbon oil is small, the adhesiveness of the skin particularly when sweating or bathing is lowered, and the patch may fall off.
- the content of the nonvolatile hydrocarbon oil in the pressure-sensitive adhesive layer is preferably 80 parts by weight to 400 parts by weight, more preferably 90 parts by weight to 350 parts by weight with respect to 100 parts by weight of the thermoplastic elastomer. Particularly preferred is 100 to 300 parts by weight.
- the content of the nonvolatile hydrocarbon oil in the pressure-sensitive adhesive layer is 100 parts by weight of the thermoplastic elastomer.
- the amount is preferably 150 to 250 parts by weight, more preferably 151 to 250 parts by weight, particularly preferably 153 to 248 parts by weight, and most preferably 155 to 245 parts by weight.
- the content of the non-volatile hydrocarbon oil in the pressure-sensitive adhesive layer is preferably 23.5% by weight or more, more preferably 25% by weight or more, still more preferably 26.5% by weight or more, and further preferably 35% by weight. % Or more, still more preferably 45% by weight or more, particularly preferably 50% by weight or more. Moreover, 88 weight% or less is preferable, More preferably, it is 85 weight% or less, More preferably, it is 83 weight% or less, More preferably, it is 70 weight% or less, More preferably, it is 68 weight% or less.
- the content of the non-volatile hydrocarbon oil in the pressure-sensitive adhesive layer can be 26.5 wt% to 83 wt%, more preferably 35 wt% to 80 wt%. Particularly preferred is 50 to 70% by weight.
- the pressure-sensitive adhesive layer preferably contains no antioxidant.
- Antioxidant here is added for the purpose of preventing oxidative degradation of the drug, for example, dibutylhydroxytoluene, ascorbic acid stearate ester, tocopherol, tocopherol ester derivatives such as tocopherol acetate, butylhydroxyanisole, Examples include 2-mercaptobenzimidazole, anthocyanin, catechin and the like.
- the pressure-sensitive adhesive layer further comprises an alcohol solvent, an amide solvent, an ester solvent, a liquid organic acid, a carboxylic acid. You may contain 1 type, or 2 or more types selected from the group which consists of salt, lactone, and surfactant.
- alcohol solvents include higher saturated aliphatic alcohols that are liquid at room temperature of about 12 to 20 carbon atoms such as lauryl alcohol, isostearyl alcohol, and 2-octyldodecanol; and about 12 to 20 carbon atoms such as oleyl alcohol.
- examples include higher unsaturated aliphatic alcohols that are liquid at normal temperature; polyhydric alcohols that are liquid at normal temperature such as ethylene glycol, propylene glycol, glycerin, 1,3-butanediol, and polyethylene glycol having a molecular weight of about 100 to 600.
- “normal temperature” in the present specification is a range of 15 to 25 ° C. in accordance with Japanese Pharmacopoeia.
- polyhydric alcohols that are liquid at room temperature such as ethylene glycol, propylene glycol, glycerin, 1,3-butanediol, and polyethylene glycol
- amide solvents include pyrrolidone such as N-methyl-2-pyrrolidone and 2-pyrrolidone; imidazolidinone such as 1,3-dimethyl-2-imidazolidinone; N-substituted toluidine such as crotamiton; formamide, N And alkaneamides such as methylformamide, N, N-dimethylformamide, N-methylacetamide, N, N-dimethylacetamide, N-methylpropanamide, and the like.
- N-methyl-2-pyrrolidone, crotamiton, N, N-dimethylformamide, and N, N-dimethylacetamide are preferable from the viewpoint of improving the solubility, dispersibility and transdermal absorbability of rivastigmine.
- N-methyl-2-pyrrolidone and crotamiton are more preferable.
- ester solvent examples include esters of long-chain fatty acids and monovalent aliphatic alcohols, medium-chain fatty acid triglycerides, esters of polyvalent carboxylic acids and monovalent aliphatic alcohols, and carbonates.
- the ester of a long chain fatty acid and a monovalent aliphatic alcohol is preferably an ester liquid at room temperature of a long chain saturated fatty acid having 12 to 20 carbon atoms and a monovalent aliphatic alcohol having 1 to 20 carbon atoms.
- Room temperature liquid such as ethyl myristate, isopropyl myristate, octyldodecyl myristate liquid at room temperature such as ethyl myristate, ethyl palmitate, isopropyl palmitate, isostearyl palmitate, etc.
- Room temperature such as palmitic acid ester, isopropyl stearate, etc. And liquid stearates.
- An ester of a long-chain unsaturated fatty acid having 12 to 20 carbon atoms and a monovalent aliphatic alcohol having 1 to 20 carbon atoms can also be preferably used.
- examples thereof include oleic acid esters that are liquid at normal temperature, ethyl linoleate, isopropyl linoleate, and other linoleic acid esters that are liquid at normal temperatures.
- the medium chain fatty acid triglyceride is a triglyceride composed of a fatty acid having about 6 to 12 carbon atoms such as caproic acid, caprylic acid, capric acid, lauric acid, and glycerin.
- a triglyceride mixture of acid and capric acid, a triglyceride mixture of caprylic acid, capric acid and lauric acid, and the like can be used.
- liquid fats and oils can also be used at normal temperature containing many of these. Examples of such fats and oils include peanut oil, olive oil, castor oil and the like.
- the product marketed for pharmaceuticals can also be used as medium chain fatty acid triglyceride liquid at normal temperature, or medium-chain fatty acid triglyceride containing oil liquid at normal temperature.
- esters of polyvalent carboxylic acids and monovalent aliphatic alcohols include, for example, liquid adipic acid diesters such as diethyl adipate and diisopropyl adipate, diethyl sebacate, diisopropyl sebacate, dioctyldodecyl sebacate and the like
- a diester that is liquid at room temperature with a dicarboxylic acid having 2 to 12 carbon atoms and a monovalent aliphatic alcohol having 1 to 20 carbon atoms, such as sebacic acid diester that is liquid at normal temperature, can be given.
- carbonic acid ester examples include cyclic carbonic acid esters of carbonic acid and diols having 2 to 10 carbon atoms, such as ethylene carbonate, propylene carbonate, vinylene carbonate, and propylene carbonate is preferred.
- myristic acid ester myristic acid ester, medium chain fatty acid triglyceride mixture, sebacic acid diester and carbonate are preferable, and isopropyl myristate, caprylic acid and capric acid triglyceride mixture, diethyl sebacate and propylene carbonate are more preferable. .
- the above alcohol solvent, amide solvent and ester solvent can be used by selecting one or more of them as necessary.
- the content of these solvents is preferably 0.1% by weight to 20% by weight and more preferably 0.5% by weight to 15% by weight with respect to the total amount of the pressure-sensitive adhesive layer.
- liquid organic acids examples include aliphatic monocarboxylic acids such as acetic acid, propionic acid, butyric acid, valeric acid, isovaleric acid, caproic acid, enanthic acid (heptanoic acid), caprylic acid, and pelargonic acid (nonanoic acid); olein Aliphatic unsaturated monocarboxylic acids such as acids, linoleic acid, arachidonic acid, docosahexaenoic acid; hydroxycarboxylic acids such as lactic acid (DL-lactic acid or L-lactic acid and / or a mixture of D-lactic acid and anhydrous lactic acid); methoxy Examples thereof include liquid carboxylic acids substituted with alkoxy groups such as acetic acid; sulfonic acids such as methanesulfonic acid.
- aliphatic monocarboxylic acids such as acetic acid, propionic acid, butyric acid, valeric acid, isovaleric acid, caproic
- liquid organic acids have a function of assisting dissolution of rivastigmine, and as a result, rivastigmine having low solubility can be contained at a high concentration in the pressure-sensitive adhesive layer, and dispersibility is also improved. And has the effect of improving transdermal absorbability.
- Japanese pharmacopeia lactic acid and oleic acid are preferably used, and Japanese pharmacopeia lactic acid is particularly preferably used.
- liquid organic acids can be selected and contained as necessary.
- the content of the liquid organic acid is preferably 0.1% by weight to 20% by weight and more preferably 0.5% by weight to 15% by weight with respect to the total amount of the pressure-sensitive adhesive layer.
- carboxylate examples include salts of aliphatic monocarboxylic acid, alicyclic monocarboxylic acid, aliphatic dicarboxylic acid and the like.
- Examples of the aliphatic monocarboxylic acid include short chain fatty acids having 2 to 7 carbon atoms such as acetic acid, butyric acid and hexanoic acid, for example, medium chain fatty acids having 8 to 11 carbon atoms such as octanoic acid and decanoic acid, such as myristic acid, Substituted with a long chain fatty acid having 12 or more carbon atoms such as stearic acid, isostearic acid and oleic acid, for example, a hydroxy monocarboxylic acid such as glycolic acid, lactic acid, 3-hydroxybutyric acid and mandelic acid, for example, an alkoxy group such as methoxyacetic acid Examples thereof include monocarboxylic acids such as ketomonocarboxylic acids such as levulinic acid.
- alicyclic monocarboxylic acid examples include alicyclic monocarboxylic acids having 6 to 8 carbon atoms such as cyclohexane carboxylic acid.
- aliphatic dicarboxylic acid examples include sebacic acid, adipic acid, malic acid, maleic acid, fumaric acid and the like.
- Preferred carboxylic acids include long chain fatty acids having 12 or more carbon atoms and hydroxymonocarboxylic acids, and examples include myristic acid, stearic acid, isostearic acid, oleic acid, and lactic acid. More preferred are oleic acid and lactic acid.
- carboxylic acid salt examples include alkali metal salts such as sodium salt and potassium salt, alkaline earth metal salts such as calcium salt, and amine salts. From the viewpoint of the effect of improving absorbability, sodium salts are preferably used.
- lactone examples include 5-membered ring lactones such as ascorbic acid and isoascorbic acid.
- sodium oleate, sodium lactate, ascorbic acid or isoascorbic acid is preferably used as the carboxylate or lactone. It is done.
- the content in the pressure-sensitive adhesive layer in the case where the carboxylate or lactone is contained in the patch of the present invention is not particularly limited, but is preferably 0.1 mol or more and 5 mol or less, more preferably 1 mol of rivastigmine. It is 0.2 mol or more and 3 mol or less.
- the amount added relative to 1 mol of rivastigmine is less than 0.1 mol, a sufficient transdermal absorbability improving effect may not be obtained.
- the amount added relative to 1 mol of rivastigmine is greater than 5 mol, adhesive properties The physical properties of the preparation may deteriorate.
- Surfactants include polyoxyethylene fatty acid esters such as polyoxyethylene monolaurate, polyoxyethylene sorbite fatty acid esters such as polyoxyethylene sorbit tetraoleate, polyoxyethylene sorbitan monooleate, and polyoxyethylene sorbitan monolaur.
- Polyoxyethylene sorbitan fatty acid esters such as polyoxyethylene sorbitan monopalmitate, sorbitan monolaurate, sorbitan monooleate, sorbitan sesquioleate, sorbitan fatty acid esters such as sorbitan trioleate, glycerin monooleate, polyoxyethylene Castor oil derivatives, glycerol fatty acid esters such as polyoxyethylene hydrogenated castor oil, polyoxyethylene lauryl ether, polyoxyethylene Polyoxyethylene higher aliphatic alcohol ethers such as lenoleyl ether, polyoxyethylene alkylphenyl ethers such as polyoxyethylene nonylphenyl ether, polyoxyethylene polyoxypropylene copolymers such as Pluronic L-31, Pluronic L-44, etc.
- Nonionic surfactants anionic surfactants such as sodium alkylsulfates such as sodium lauryl sulfate, cationic surfactants such as alkyltrimethylammonium salt and alkyldimethylammonium salt, alkyldimethylamine oxide, alkyl Examples include amphoteric surfactants such as carboxybetaine, and one or more of these can be selected and used.
- nonionic surfactants that are liquid at room temperature are preferred
- sorbitan fatty acid esters that are liquid at room temperature are more preferred
- sorbitan monolaurate is particularly preferred, in order to enhance transdermal absorbability.
- the content in the adhesive layer is preferably 0.01% by weight to 10% by weight, more preferably 0.1% by weight to 5% by weight. is there.
- the adhesive layer containing thermoplastic elastomer and nonvolatile hydrocarbon oil at the content and content ratio as described above can exhibit good skin adhesiveness.
- the pressure-sensitive adhesive layer may contain a tackifier.
- the tackifier is a resin generally used for imparting skin adhesiveness in the field of patches, and includes, for example, rosin resin, polyterpene resin, coumarone-indene resin, petroleum resin, terpene-phenol. Examples thereof include resins and alicyclic saturated hydrocarbon resins, and one or more of them can be selected and used.
- the content of the tackifier in the pressure-sensitive adhesive layer is 10% by weight or less from the viewpoint of reducing skin irritation.
- the content is preferably 5% by weight or less, more preferably 2% by weight or less, still more preferably 1% by weight or less, and most preferably no tackifier. That is, the content of the tackifier is prepared according to the type, content, and content ratio of the thermoplastic elastomer and the non-volatile hydrocarbon oil, in relation to the skin adhesiveness of the patch. In the case where sufficient skin adhesiveness can be obtained without containing a tackifier, no tackifier is required.
- an excipient for example, a dispersant, a stabilizer, a thickener, a softener, a flavoring agent, as long as the characteristics of the present invention are not impaired.
- Additives generally used in pharmaceutics such as coloring agents may be contained.
- excipient used in the present invention examples include silicon compounds such as silicic anhydride, light silicic anhydride, and hydrous silicic acid; cellulose derivatives such as ethyl cellulose, methyl cellulose, hydroxypropyl cellulose, and hydroxypropyl methyl cellulose; polyvinyl alcohol and the like Synthetic water-soluble polymers; aluminum compounds such as dry aluminum hydroxide gel and hydrous aluminum silicate; pigments such as kaolin and titanium oxide. In the present invention, one type or two or more types can be selected and used from the above as necessary.
- dispersant used in the present invention examples include gum arabic, propylene glycol alginate, sodium dioctyl sulfosuccinate, lecithin and the like. In the present invention, one type or two or more types can be selected and used from the above as necessary.
- Examples of the stabilizer used in the present invention include zinc stearate, gelatin, dextran, povidone and the like. In the present invention, one type or two or more types can be selected and used from the above as necessary.
- thickener used in the present invention examples include carboxyvinyl polymer, xanthan gum, tragacanth, locust bean gum and the like. In the present invention, one type or two or more types can be selected and used from the above as necessary.
- softener used in the present invention examples include almond oil, rapeseed oil, cottonseed oil / soybean oil mixture, process oil, oils such as beef tallow; waxes such as refined lanolin; solid esters at room temperature such as cetyl lactate Rubbers such as polyisoprene rubber, polybutene and raw rubber; polymers such as crystalline cellulose; allantoin and the like.
- one type or two or more types can be selected and used from the above as necessary.
- Examples of the flavoring agent used in the present invention include d-camphor, dl-camphor, d-borneol, dl-borneol, cinnamaldehyde, mint oil, dl-menthol, and l-menthol.
- d-camphor d-camphor
- dl-camphor d-borneol
- dl-borneol dl-borneol
- cinnamaldehyde mint oil
- dl-menthol l-menthol
- one type or two or more types can be selected and used from the above as necessary.
- Examples of the colorant used in the present invention include bengara, yellow iron oxide, yellow iron sesquioxide, and carbon black. In the present invention, one type or two or more types can be selected and used from the above as necessary.
- the patch of the present invention is prepared by spreading an adhesive layer having the above structure on a support.
- the “support” is not particularly limited, and those widely used for patches can be used.
- stretchable or non-stretchable woven fabrics such as polyethylene and polypropylene, non-woven fabrics, polyesters such as polyethylene, polypropylene, and polyethylene terephthalate, ethylene vinyl acetate copolymers, films such as vinyl chloride, and foaming properties such as urethane and polyurethane
- a support is mentioned. These may be used alone or may be a laminate of a plurality of types.
- an antistatic agent may be contained in the woven fabric, non-woven fabric, film, etc. constituting the support.
- a nonwoven fabric or woven fabric, or a laminate of these and a film can be used as the support.
- the thickness of the support is usually 10 ⁇ m to 100 ⁇ m for the film, preferably 15 ⁇ m to 50 ⁇ m, and for the porous sheet such as a woven fabric, non-woven fabric, and foamable support, it is usually 50 ⁇ m to 2,000 ⁇ m, preferably 100 ⁇ m to 1,000 ⁇ m.
- the patch of the present invention can also be provided with a release liner that is common in the field of patches.
- a release liner glassine paper, polyester such as polyethylene, polypropylene, polyethylene terephthalate, resin film such as polystyrene, aluminum film, foamed polyethylene film or foamed polypropylene film, or a laminate of two or more of the above may be used. Further, those processed with silicone, processed with fluororesin, processed with embossing, hydrophilic processing, hydrophobic processing, etc. can be used.
- the thickness of the release liner is usually 10 ⁇ m to 200 ⁇ m, preferably 15 ⁇ m to 150 ⁇ m.
- the patch of the present invention is prepared by, for example, dissolving a thermoplastic elastomer and rivastigmine or a salt thereof in a non-volatile hydrocarbon oil and dissolving or dispersing in a solvent such as toluene to prepare a coating solution for forming an adhesive layer. And it can manufacture by apply
- the release liner can be pressure-bonded to the pressure-sensitive adhesive layer and laminated.
- the coating liquid may be applied onto a release liner, dried to form a pressure-sensitive adhesive layer on the surface of the release liner, and then the support may be pressure bonded onto the pressure-sensitive adhesive layer and bonded together.
- the coating solution for forming the pressure-sensitive adhesive layer is performed by using a conventional coater such as a roll coater, die coater, gravure roll coater, reverse roll coater, kiss roll coater, dip roll coater, bar coater, knife coater, spray coater, etc. Can be used.
- the coating liquid is preferably dried under heating, for example, at a temperature of about 40 ° C. to 150 ° C.
- the pressure-sensitive adhesive layer containing rivastigmine after drying is preferably 10 g / m 2 to 1,000 g / m 2 , more preferably 20 g / m 2 to 800 g / m 2 .
- the patch of the present invention is a patch (a patch of the second aspect) in which a storage layer and a pressure-sensitive adhesive layer for holding a drug are formed on a support instead of the pressure-sensitive adhesive layer for holding a drug. Also good.
- the storage layer for holding the drug (hereinafter also abbreviated as “drug storage layer”) contains rivastigmine or a salt thereof, and the pressure-sensitive adhesive layer is 50% by weight with respect to 100 parts by weight of the thermoplastic elastomer and the elastomer. More than 800 parts by weight of non-volatile hydrocarbon oil.
- the adhesive layer may contain the tackifier, and content in the adhesive layer of this tackifier is 10 weight% or less.
- the component constituting the drug storage layer is not particularly limited, and examples thereof include components described in Patent Document 2.
- the “thermoplastic elastomer” and “nonvolatile hydrocarbon oil” used in the pressure-sensitive adhesive layer can be used as components of the drug storage layer.
- salt of rivastigmine are the same as those exemplified in the patch of the first aspect described above. From the viewpoint of dispersibility in the drug storage layer and transdermal absorbability, it is preferable to use free (base) rivastigmine.
- the content of the drug in the patch is not particularly limited, but in consideration of dispersibility and transdermal absorbability in the drug storage layer, it is preferably 1% by weight to 30% by weight, more preferably 2.5% in the drug storage layer. % To 25% by weight, most preferably 4% to 20% by weight.
- thermoplastic elastomer used in the pressure-sensitive adhesive layer is synonymous with the “thermoplastic elastomer” in the “pressure-sensitive adhesive layer” of the patch of the first aspect described above, and its preferred mode is also followed.
- the thermoplastic elastomer content in the pressure-sensitive adhesive layer is preferably 8% by weight to 66% by weight, more preferably 10% by weight to 65% by weight, and particularly preferably 12% by weight to 64% by weight.
- nonvolatile hydrocarbon oil contained in the pressure-sensitive adhesive layer is synonymous with the “nonvolatile hydrocarbon oil” in the “pressure-sensitive adhesive layer” of the patch of the first aspect described above.
- the pressure-sensitive adhesive layer contains nonvolatile hydrocarbon oil in a weight ratio of more than 50 parts by weight and not more than 800 parts by weight with respect to 100 parts by weight of the thermoplastic elastomer. When the content of the non-volatile hydrocarbon oil with respect to 100 parts by weight of the thermoplastic elastomer exceeds 800 parts by weight, it becomes difficult to maintain the shape of the pressure-sensitive adhesive layer.
- the content of the non-volatile hydrocarbon oil in the pressure-sensitive adhesive layer is preferably 51 parts by weight to 800 parts by weight, more preferably 60 parts by weight to 600 parts by weight with respect to 100 parts by weight of the thermoplastic elastomer. The most preferred amount is 70 to 500 parts by weight.
- the content of the non-volatile hydrocarbon oil in the pressure-sensitive adhesive layer is preferably 23.5% by weight to 88% by weight, more preferably 25% by weight to 85% by weight, and most preferably 26.5% by weight to 83%. % By weight.
- thermoplastic elastomer and nonvolatile hydrocarbon oil are preferably 10 non-volatile hydrocarbon oils per 100 parts by weight of the thermoplastic elastomer. It is preferably used in a proportion of ⁇ 1200 parts by weight, more preferably in a proportion of 50 to 800 parts by weight.
- the drug reservoir layer further comprises alcohol solvents, amide solvents, ester solvents, liquid organic acids, carboxylates, lactones, and surfactants.
- alcohol solvents amide solvents, ester solvents, liquid organic acids, carboxylates, lactones, and surfactants.
- surfactants One or more selected from the group consisting of agents may be included.
- the preferred embodiments of the alcohol solvent, amide solvent, ester solvent, liquid organic acid, carboxylate salt, lactone, and surfactant and the content in the drug storage layer are the same as those in the first embodiment. It is followed in the “adhesive layer holding the drug” of the agent.
- the pressure-sensitive adhesive layer By making the pressure-sensitive adhesive layer contain thermoplastic elastomer and nonvolatile hydrocarbon oil at the content and content ratio as described above, good skin adhesiveness can be exhibited. May contain a tackifier as necessary.
- the “tackifier” here is synonymous with the “tackifier” in the “adhesive layer holding the drug” of the patch of the first aspect described above, and its preferred embodiment is also followed.
- Content of the tackifier in an adhesive layer shall be 10 weight% or less.
- the content is preferably 5% by weight or less, more preferably 2% by weight or less, still more preferably 1% by weight or less, and most preferably no tackifier.
- the content of the tackifier is prepared according to the type, content, and content ratio of the thermoplastic elastomer and the non-volatile hydrocarbon oil in relation to the skin adhesiveness of the patch.
- an excipient in the drug storage layer and the pressure-sensitive adhesive layer in the patch of the second aspect, as an optional component, an excipient, a dispersant, a stabilizer, a thickener, and an antioxidant as long as the characteristics of the present invention are not impaired.
- General additives in terms of pharmacology such as softeners, flavoring agents, and coloring agents may be added.
- the preferred embodiment of each additive follows that of the patch of the first embodiment described above.
- the patch of the second aspect is prepared by spreading a drug storage layer and an adhesive layer having the above-described structure on a support.
- the “support” here is synonymous with the “support” of the patch of the first aspect described above, and its preferred embodiment is also followed.
- the patch of the second aspect can be provided with a release liner that is common in the field of patches.
- the “release liner” here is synonymous with the “release liner” of the patch of the first aspect described above, and its preferred embodiment is also followed.
- the drug storage layer can be obtained, for example, by dissolving the drug and polymer in a solvent and then applying and drying on the support, or applying and drying on the release liner. Then, the drug storage layer may be formed on the surface of the release liner, and then the support may be pressure bonded onto the drug storage layer.
- the pressure-sensitive adhesive layer is obtained by dissolving a thermoplastic elastomer and a drug or a salt thereof in a non-volatile hydrocarbon oil and dissolving or dispersing them in a solvent such as toluene to prepare a coating solution for forming a pressure-sensitive adhesive layer.
- the coating solution can be produced by applying on the drug storage layer or release liner and then drying.
- the patch can be obtained by subsequently pressing and bonding to the drug storage layer.
- Application of the coating solution for forming the drug storage layer and the adhesive layer is, for example, a roll coater, die coater, gravure roll coater, reverse roll coater, kiss roll coater, dip roll coater, bar coater, knife coater, spray coater, etc.
- a conventional coater can be used.
- the coating liquid is preferably dried under heating, for example, at a temperature of about 40 ° C. to 150 ° C.
- the pressure-sensitive adhesive layer containing the drug after drying is preferably 10 g / m 2 to 1,000 g / m 2 , more preferably 20 g / m 2 to 800 g / m 2 .
- Examples 1 to 10 Preparation of patch containing rivastigmine According to the formulation shown in Table 1, each component constituting the adhesive layer was weighed. First, a styrene-isoprene-styrene block copolymer (SIS) / styrene-isoprene block copolymer (SI) mixture (“KRAYTON D1119” (weight average molecular weight: 207,500) manufactured by Clayton, “JSR SIS5505 manufactured by JSR” ”,“ JSR SIS5229 ”) was dissolved in 230 parts by weight of toluene with respect to 100 parts by weight of the mixture.
- SIS styrene-isoprene-styrene block copolymer
- SI styrene-isoprene block copolymer
- Liquid paraffin (“KAYDOL”, “Hydrobrite 550PO”, “Hydrobrite HV” manufactured by Soneborn, Inc.) and rivastigmine were added to the solution and mixed and stirred to prepare a coating solution for forming an adhesive layer.
- the coating solution was applied to a silicone-treated polyethylene terephthalate (PET) film (release liner) and prepared such that the rivastigmine content in the pressure-sensitive adhesive layer after drying was 1.8 mg / cm 2 .
- PET film support
- the SIS / SI ratio is a weight ratio.
- the coating solution was applied to a silicone-treated PET film (release liner), prepared so that the weight of the pressure-sensitive adhesive layer after drying was 100 g / m 2 , dried in an oven at 80 ° C. for 60 minutes, but cured. No patch was obtained.
- Adhesive property test ⁇ Peel strength> The patch cut to 25 mm ⁇ 300 mm was stuck on a stainless steel (SUS304) plate, and the stress when peeled at a speed of 300 mm / min in the 180 ° direction was measured.
- each patch of the examples of the present invention showed an appropriate peel strength and sufficient tack. Further, when high viscosity liquid paraffin was used, a preparation having excellent peel strength and holding power, and adjustment of the liquid paraffin content resulted in a formulation with little sticking out of the adhesive layer and little peeling during bathing.
- HPLC high performance liquid chromatography
- each patch of Examples 1 to 3 of the present invention is more than the commercially available rivastigmine-containing patch having the same amount of rivastigmine per unit area, and is comparable in Examples 4 to 10.
- the skin permeability was shown to be good.
- ⁇ Evaluation criteria for skin irritation> [Formation of erythema and crust] No erythema; 0 points Very mild (barely discernable) erythema; 1 point Clear erythema; 2 points Moderate to high erythema; 3 points Marking erythema from high erythema 4 points [formation of edema] No edema; 0 points Very mild (barely discernable) edema; 1 point Mild edema (distinguishes distinct edges due to clear bulges); 2 points Moderate edema (about 1 point bulges); 3 points Advanced edema (bulges greater than 1 mm and spread beyond the exposure range); 4 points
- the commercially available rivastigmine-containing patch is P.I. I. I.
- the value was 2.92, indicating moderate irritation.
- the patch of the example is P.I. I. I.
- a value of 0 was evaluated as non-irritating, indicating that skin irritation was low.
- Examples 1 and 9 of the present invention showed the same level of stability as a commercially available rivastigmine patch.
- Example 11 Preparation of a patch containing rivastigmine According to the formulation shown in Table 8, each component constituting the drug storage layer was weighed. First, a styrene-isoprene-styrene block copolymer (SIS) / styrene-isoprene block copolymer (SI) mixture (“KRAYTON D1119” (weight average molecular weight: 207,500) manufactured by Kraton Co., Ltd.) Part by weight in 230 parts by weight of toluene.
- SIS styrene-isoprene-styrene block copolymer
- SI styrene-isoprene block copolymer
- Liquid paraffin (“Hydrobrite HV” manufactured by Soneborn, Inc.) and rivastigmine were added to the solution and mixed and stirred to prepare a coating solution for forming a drug storage layer.
- the coating solution was applied to a silicone-treated polyethylene terephthalate (PET) film (release liner) and prepared such that the rivastigmine content in the drug storage layer after drying was 1.8 mg / cm 2 . After drying in an oven at 80 ° C. for 1 hour, a PET film (support) was laminated on the surface of the drug storage layer to obtain the desired drug storage layer.
- PET polyethylene terephthalate
- Table 8 each component constituting the pressure-sensitive adhesive layer was weighed.
- SIS styrene-isoprene-styrene block copolymer
- SI styrene-isoprene block copolymer
- the coating solution was applied to a silicone-treated polyethylene terephthalate (PET) film (release liner), and the pressure-sensitive adhesive layer weight after drying was adjusted to 100 g / m 2 . After drying in an oven at 80 ° C. for 1 hour, the drug storage layer was laminated on the surface of the pressure-sensitive adhesive layer and cut into a size of 15 cm ⁇ 30 cm to obtain the intended patch.
- PET polyethylene terephthalate
- Example 11 The patch of Example 11 was subjected to the above-mentioned Test Example 2 (in vitro skin permeability test), and the amount of rivastigmine that permeated the rat skin 24 hours after the sample was applied was determined and shown in Table 9.
- Table 9 shows that the patch of Example 1 of the present invention has the same level of rivastigmine-containing patch having the same rivastigmine content per unit area and good skin permeability. It was.
- Example 11 The patch of Example 11 was subjected to the aforementioned Test Example 3 (skin primary irritation test) to evaluate skin irritation. The results are shown in Table 10.
- the commercially available rivastigmine-containing patch is P.I. I. I.
- the value was 2.92, indicating moderate irritation.
- the patch of Example 11 is P.I. I. I.
- a value of 0 was evaluated as non-irritating, indicating that skin irritation was low.
- the present invention provides a patch of rivastigmine that has sufficient skin adhesiveness but low skin irritation, good skin permeability of rivastigmine, and sufficient transdermal absorbability. can do.
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Abstract
Description
また、薬物の安定性の観点から、薬物との相互作用の少ないゴム系粘着剤を用いた貼付剤が提案されている(特許文献4~6)。
[1] 支持体上に薬物を保持する粘着剤層が形成された貼付剤であって、
前記粘着剤層は、
熱可塑性エラストマー、
該エラストマー100重量部に対して50重量部を超え、800重量部以下の不揮発性炭化水素油、および
リバスチグミンまたはその塩を含み、
前記粘着剤層は、さらに粘着付与剤を含んでいてもよく、該粘着付与剤の粘着剤層中の含有量が10重量%以下である、貼付剤。
[2] 粘着剤層中の不揮発性炭化水素油の含有量が23.5重量%以上、88重量%以下である、上記[1]に記載の貼付剤。
[3] 粘着剤層中の不揮発性炭化水素油の含有量が、熱可塑性エラストマー100重量部に対して、150重量部を超え、250重量部以下である、上記[1]または[2]に記載の貼付剤。
[4] 粘着剤層中の不揮発性炭化水素油の含有量が50重量%以上、70重量%以下である、上記[1]~[3]のいずれかに記載の貼付剤。
[5] 不揮発性炭化水素油が流動パラフィンである、上記[1]~[4]のいずれかに記載の貼付剤。
[6] 不揮発性炭化水素油の40℃における動粘度が、80mm2/s以上である、上記[1]~[5]のいずれかに記載の貼付剤。
[7] 熱可塑性エラストマーがスチレン系ブロック共重合体である、上記[1]~[6]のいずれかに記載の貼付剤。
[8] スチレン系ブロック共重合体がスチレン-イソプレン-スチレンブロック共重合体である、上記[7]に記載の貼付剤。
[9] スチレン系ブロック共重合体がスチレン-イソプレン-スチレンブロック共重合体とスチレン‐イソプレンブロック共重合体との混合物である、上記[7]に記載の貼付剤。
[10] 粘着剤層中に粘着付与剤を含まない、上記[1]~[9]のいずれかに記載の貼付剤。
[11] 粘着剤層中に抗酸化剤を含まない、上記[1]~[10]のいずれかに記載の貼付剤。
[12] 支持体上に薬物を保持する貯蔵層および粘着剤層が形成された貼付剤であって、
前記貯蔵層はリバスチグミンまたはその塩を含み、
前記粘着剤層は、
熱可塑性エラストマー、および
該エラストマー100重量部に対して50重量部を超え、800重量部以下の不揮発性炭化水素油を含み、
前記粘着剤層は、さらに粘着付与剤を含んでいてもよく、該粘着付与剤の粘着剤層中の含有量が10重量%以下である、貼付剤。
[13] 粘着剤層中の不揮発性炭化水素油の含有量が23.5重量%以上、88重量%以下である、上記[12]に記載の貼付剤。
市販品としては、たとえば、KRATON POLYMERS社製の「KRATON D1161」、「KRATON D1163」、「KRATON D1113」、「KRATON D1119」、JSR社製の「JSR SIS5229」、「JSR SIS5403」、「JSR SIS5505」等が挙げられる。
本発明においては、必要に応じて、上記したものから1種または2種以上を選択して用いることができる。
本発明においては、必要に応じて、上記したものから1種または2種以上を選択して用いることができる。
本発明においては、必要に応じて、上記したものから1種または2種以上を選択して用いることができる。
本発明においては、必要に応じて、上記したものから1種または2種以上を選択して用いることができる。
本発明においては、必要に応じて、上記したものから1種または2種以上を選択して用いることができる。
本発明においては、必要に応じて、上記したものから1種または2種以上を選択して用いることができる。
本発明においては、必要に応じて、上記したものから1種または2種以上を選択して用いることができる。
かかる貼付剤では、薬物を保持する貯蔵層(以下、「薬物貯蔵層」とも略称する)がリバスチグミンまたはその塩を含み、粘着剤層が、熱可塑性エラストマーおよび該エラストマー100重量部に対して50重量部を超え、800重量部以下の不揮発性炭化水素油を含む。また、粘着剤層は粘着付与剤を含んでいてもよく、該粘着付与剤の粘着剤層中の含有量が10重量%以下である。
表1に示す処方に従って、粘着剤層を構成する各成分を秤取した。まず、スチレン-イソプレン-スチレンブロック共重合体(SIS)/スチレン-イソプレンブロック共重合体(SI)混合物(クレイトン社製「KRAYTON D1119」(重量平均分子量:207,500)、JSR社製「JSR SIS5505」、「JSR SIS5229」)を、当該混合物100重量部に対し、230重量部のトルエンに溶解した。前記溶解液に、流動パラフィン(ソネボーン社製の「KAYDOL」、「Hydrobrite 550PO」、「Hydrobrite HV」)、リバスチグミンを加えて混合撹拌し、粘着剤層形成用の塗液を調製した。
なお、上記塗液をシリコーン処理したポリエチレンテレフタレート(PET)製フィルム(剥離ライナー)に塗布し、乾燥後の粘着剤層中のリバスチグミン含有量が1.8mg/cm2となるように調製した。80℃のオーブンにて1時間乾燥後、該粘着剤層の表面にPET製フィルム(支持体)をラミネートし、15cm×30cmの大きさに裁断して、目的の貼付剤を得た。なお、表中のSIS/SI比は重量比である。
表1の実施例1の処方において、スチレン-イソプレン-スチレンブロック共重合体/スチレン-イソプレンブロック共重合体混合物に代えて、市販の熱硬化性感圧性アクリル系粘着剤(「Duro tak 87-2194」、ヘンケル社製、固形分含有量=40重量%)を、固形分含有量が表1の熱可塑性エラストマー含有量と同じになるように秤取して流動パラフィンを添加し、リバスチグミンを溶解して加えて混合撹拌し、粘着剤層形成用の塗液を調製した。
該塗液をシリコーン処理したPET製フィルム(剥離ライナー)に塗布し、乾燥後の粘着剤層重量が100g/m2となるように調製し、80℃のオーブンにて60分乾燥したが硬化せず、貼付剤は得られなかった。
表2に示す処方に従って、粘着剤層を構成する各成分を秤取し、実施例1と同様に貼付剤を調整したが、比較例2に関しては、十分な粘着性が得られず、比較例3に関しては粘着剤層が維持できず、評価できなかった。
<剥離強度>
25mm×300mmに裁断した貼付剤をステンレス(SUS304)板に貼付し、180°方向に300mm/minのスピードで剥離した際の応力を測定した。
<ボールタック>
100mm幅で裁断した貼付剤を貼付した傾斜角30°の斜面において、100mmの助走路を経て1/32インチ~1インチのボールを転がして、貼付剤上で5秒以上留まった最大のボールの呼び径を測定した。
<保持力>
25mm×300mmに裁断した貼付剤をステンレス(SUS304)板に貼付し、90°方向に25gの荷重を60分間掛け、剥離した距離を測定した。
<はみ出し>
実施例および比較例で調整した貼付剤の端部を、支持体の上から指先で圧縮し、はみ出しの度合いを下記基準に従って評価した。
A:圧縮しても、粘着層は全くはみ出さない。
B:圧縮しても、粘着層がほとんどはみ出さない。
C:圧縮時、粘着層が変形して支持体からはみ出すが、圧縮を開放すると元に戻る。
D:圧縮時、粘着層が変形して支持体からはみ出し、圧縮を開放しても元に戻りにくい。
<入浴時剥離の程度>
実施例および比較例で調整した貼付剤を直径36mmの円形に打抜き、健常ボランティア5名の胸部に貼付し、入浴時の剥離の度合いを下記基準に従って評価した。
A:5名とも剥離しない。
B:1~2名に端部の剥離が見られるものの、脱落はしない。
C:1~2名で貼付剤が脱落。
D:3名以上で脱落。
国際公開第2006/093139号パンフレットに記載された方法に準じて、Wister系雄性ラット(5週齢)の腹部抽出皮膚を縦型フランツ拡散セルに装着した。実施例1~3の各貼付剤および支持体上に薬物層および粘着剤層を形成してなる市販のリバスチグミン含有貼付剤(リバスチグミン含有量=1.8mg/cm2)をそれぞれ面積1.0cm2の円形に打ち抜いて試料とし、拡散セルのラット皮膚上に貼付した(n=3)。レセプター側には10体積%エタノール生理食塩水を用いて、経時的にレセプター溶液中のリバスチグミン含有量を、高速液体クロマトグラフィー(HPLC)により定量した。HPLCの測定条件を以下に示す。
<HPLC測定条件>
HPLCシステム:高速液体クロマトグラフ(LC2010C) 株式会社島津製作所製
カラム:ODS、4.6mmφ×15cm、5μm
カラム温度:25℃、
移動相:緩衝液/メタノール=50/50、
(緩衝液;5.0mM 1-ヘプタンスルホン酸ナトリウム、1体積%リン酸)
検出波長:220nm、
流量:0.8mL/min.
貼付開始日の3日前にkbs:JW雌性家兎(17週齢)の背部被毛を電気バリカンで毛刈りし、実施例1の貼付剤と市販のリバスチグミン含有貼付剤をそれぞれ2.5cm角に裁断して皮膚に貼付した(n=3)。貼付場所を覆うように油紙を載せ、胸部から腹部全体にかけてアンダーラップテープ(ニチバン株式会社製)で覆うように巻き付け、さらに家兎用ジャケット(BJ03、バイオリサーチセンター株式会社製)を装着した。24時間固定後、試料を除去し、除去後1時間目、24時間目、48時間目、および72時間目にJ.Pharmacol.Exp.Ther.82,377-390(1944)に記載の方法に基づき、皮膚刺激反応の程度を評価した。
[紅斑および痂皮の形成]
紅斑を認めない;0点
非常に軽度な(かろうじて識別できる程度の)紅斑を認める;1点
明確な紅斑を認める;2点
中等度ないし高度の紅斑を認める;3点
高度の紅斑から紅斑の採点を妨げる程度の痂皮の形成を認める;4点
[浮腫の形成]
浮腫を認めない;0点
非常に軽度な(かろうじて識別できる程度の)浮腫を認める;1点
軽度の浮腫を認める(はっきりした膨隆による明確な縁が識別できる);2点
中等度の浮腫(約1mmの膨隆)を認める;3点
高度の浮腫(1mm以上の膨隆と曝露範囲を超えた広がり)を認める;4点
市販のリバスチグミン製剤と同じ包材中に、実施例1および9で得られた製剤を封入し、市販のリバスチグミン製剤とともに40℃、75%RHにて保管した。初期および保管後(1ヶ月後と3ヶ月後)の製剤から粘着剤層をTHFに溶解し、HPLCにてリバスチグミン含量を定量、初期値に対する保管後の薬物残存率を比較した
表8に示す処方に従って、薬物貯蔵層を構成する各成分を秤取した。まず、スチレン-イソプレン-スチレンブロック共重合体(SIS)/スチレン-イソプレンブロック共重合体(SI)混合物(クレイトン社製「KRAYTON D1119」(重量平均分子量:207,500))を、当混合物100重量部に対し、230重量部のトルエンに溶解した。前記溶解液に、流動パラフィン(ソネボーン社製「Hydrobrite HV」)、リバスチグミンを加えて混合撹拌し、薬物貯蔵層形成用の塗液を調製した。
上記塗液をシリコーン処理したポリエチレンテレフタレート(PET)製フィルム(剥離ライナー)に塗布し、乾燥後の薬物貯蔵層中のリバスチグミン含有量が1.8mg/cm2となるように調製した。80℃のオーブンにて1時間乾燥後、該薬物貯蔵層の表面にPET製フィルム(支持体)をラミネートし目的の薬物貯蔵層を得た。
一方、表8に示す処方に従って、粘着剤層を構成する各成分を秤取した。まず、スチレン-イソプレン-スチレンブロック共重合体(SIS)/スチレン-イソプレンブロック共重合体(SI)混合物(クレイトン社製「KRAYTON D1119」(重量平均分子量:207,500))を、当該混合物100重量部に対し、230重量部のトルエンに溶解した。前記溶解液に、流動パラフィン(ソネボーン社製「Hydrobrite HV」)を加えて混合撹拌し、粘着剤層形成用の塗液を調製した。
上記塗液をシリコーン処理したポリエチレンテレフタレート(PET)製フィルム(剥離ライナー)に塗布し、乾燥後の粘着剤層重量が100g/m2となるように調製した。80℃のオーブンにて1時間乾燥後、該粘着剤層の表面に薬物貯蔵層をラミネートし、15cm×30cmの大きさに裁断して、目的の貼付剤を得た。
Claims (11)
- 支持体上に薬物を保持する粘着剤層が形成された貼付剤であって、
前記粘着剤層は、
熱可塑性エラストマー、
該エラストマー100重量部に対して50重量部を超え、800重量部以下の不揮発性炭化水素油、および
リバスチグミンまたはその塩を含み、
前記粘着剤層は、さらに粘着付与剤を含んでいてもよく、該粘着付与剤の粘着剤層中の含有量が10重量%以下である、貼付剤。 - 粘着剤層中の不揮発性炭化水素油の含有量が23.5重量%以上、88重量%以下である、請求項1に記載の貼付剤。
- 粘着剤層中の不揮発性炭化水素油の含有量が、熱可塑性エラストマー100重量部に対して、150重量部を超え、250重量部以下である、請求項1または2に記載の貼付剤。
- 粘着剤層中の不揮発性炭化水素油の含有量が50重量%以上、70重量%以下である、請求項1~3のいずれか1項に記載の貼付剤。
- 不揮発性炭化水素油が流動パラフィンである、請求項1~4のいずれか1項に記載の貼付剤。
- 不揮発性炭化水素油の40℃における動粘度が、80mm2/s以上である請求項1~5のいずれか1項に記載の貼付剤。
- 熱可塑性エラストマーがスチレン系ブロック共重合体である、請求項1~6のいずれか1項に記載の貼付剤。
- スチレン系ブロック共重合体がスチレン-イソプレン-スチレンブロック共重合体である、請求項7に記載の貼付剤。
- スチレン系ブロック共重合体がスチレン-イソプレン-スチレンブロック共重合体とスチレン‐イソプレンブロック共重合体との混合物である、請求項7に記載の貼付剤。
- 粘着剤層中に粘着付与剤を含まない、請求項1~9のいずれか1項に記載の貼付剤。
- 粘着剤層中に抗酸化剤を含まない、請求項1~10のいずれか1項に記載の貼付剤。
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US14/406,691 US10758494B2 (en) | 2012-06-12 | 2013-06-12 | Rivastigmine-containing adhesive patch |
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TW103107898A TWI626953B (zh) | 2013-06-12 | 2014-03-07 | Percutaneous absorption preparation |
TW107111519A TWI745577B (zh) | 2013-06-12 | 2014-03-07 | 經皮吸收製劑 |
PCT/JP2014/065637 WO2014200072A1 (ja) | 2013-06-12 | 2014-06-12 | 皮膚貼付用粘着シートおよびそれを用いた経皮吸収製剤 |
PL14810664T PL3040068T3 (pl) | 2013-06-12 | 2014-06-12 | Arkusz samoprzylepny do zastosowania na skórę i kompozycja o absorpcji przezskórnej zastosowana w nim |
US14/897,641 US20160206568A1 (en) | 2013-06-12 | 2014-06-12 | Adhesive sheet for application to the skin, and percutaneous absorption preparation using same |
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SI201431910T SI3040068T1 (sl) | 2013-06-12 | 2014-06-12 | Adhezivna folija za uporabo na koži in perkutani absorpcijski preparat, ki jo uporablja |
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WO2019017266A1 (ja) | 2017-07-19 | 2019-01-24 | 帝國製薬株式会社 | リバスチグミン含有経皮吸収型製剤 |
JPWO2019017266A1 (ja) * | 2017-07-19 | 2020-05-28 | 帝國製薬株式会社 | リバスチグミン含有経皮吸収型製剤 |
JP7193863B2 (ja) | 2017-07-19 | 2022-12-21 | 帝國製薬株式会社 | リバスチグミン含有経皮吸収型製剤 |
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US20150224063A1 (en) | 2015-08-13 |
EP2859892B1 (en) | 2023-06-07 |
EP2859892C0 (en) | 2023-06-07 |
CN104114167B (zh) | 2017-05-17 |
JP6467726B2 (ja) | 2019-02-13 |
EP2859892A4 (en) | 2015-11-18 |
US10758494B2 (en) | 2020-09-01 |
JP6153135B2 (ja) | 2017-06-28 |
JPWO2013187451A1 (ja) | 2016-02-08 |
JP2017137363A (ja) | 2017-08-10 |
EP2859892A1 (en) | 2015-04-15 |
CN104114167A (zh) | 2014-10-22 |
PL2859892T3 (pl) | 2023-10-16 |
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