WO2012008395A1 - 三層構造の支持体及びそれを用いた水性貼付剤 - Google Patents
三層構造の支持体及びそれを用いた水性貼付剤 Download PDFInfo
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- WO2012008395A1 WO2012008395A1 PCT/JP2011/065762 JP2011065762W WO2012008395A1 WO 2012008395 A1 WO2012008395 A1 WO 2012008395A1 JP 2011065762 W JP2011065762 W JP 2011065762W WO 2012008395 A1 WO2012008395 A1 WO 2012008395A1
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- Prior art keywords
- support
- plaster
- fiber layer
- patch
- aqueous patch
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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
- A61K9/7084—Transdermal patches having a drug layer or reservoir, and one or more separate drug-free skin-adhesive layers, e.g. between drug reservoir and skin, or surrounding the drug reservoir; Liquid-filled reservoir patches
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive bandages or dressings
- A61F13/0203—Adhesive bandages or dressings with fluid retention members
- A61F13/022—Adhesive bandages or dressings with fluid retention members having more than one layer with different fluid retention characteristics
-
- 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
- A61K31/16—Amides, e.g. hydroxamic acids
- A61K31/165—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide
- A61K31/167—Amides, 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
-
- 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
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid
-
- 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
-
- 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
-
- 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
- A61K9/7061—Polyacrylates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2121/00—Preparations for use in therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2300/00—Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
- Y10T428/24331—Composite web or sheet including nonapertured component
Definitions
- the present invention provides an inner fiber layer for holding a paste, a film layer provided with through holes, and a breathable outer layer that prevents the paste or liquid components that have exuded from the paste from leaking to the outside.
- the present invention relates to a support having a three-layer structure in which a fiber layer is bonded, and an aqueous patch that can be used for a long time.
- an aqueous patch is not suitable for applying for a longer time than an oil-based patch.
- One of the reasons is that it is difficult to control moisture evaporation.
- the properties of the support are greatly related to the moisture permeability of the aqueous patch. For example, when a woven fabric or a nonwoven fabric is used as a support, they have a high moisture permeability and cause a decrease in the moisture content in the plaster in a short time, and the plaster component tends to harden, resulting in a decrease in adhesive strength. There is a drawback.
- aqueous patches using a two-layer structure support composed of a moisture-permeable film and a fiber adjusted for air permeability from the support have been proposed (Patent Documents 1 to 3).
- Patent Documents 1 to 3 aqueous patches having components such as fats and oils contained in the paste penetrating into the film, resulting in poor quality such as wrinkles and kinks, and problems such as stickiness due to oozing out of the components on the film surface. May occur.
- JP-A-8-217668 Japanese Patent Laid-Open No. 10-298065 International Publication No. WO2006 / 070672 JP-A-6-116141 JP 2000-143503 A
- the present invention is suitable for a patch containing a drug that can be applied for a long period of time by adjusting the water evaporation from the plaster by maintaining appropriate air permeability and maintaining the adhesive strength of the plaster for a long period of time. Therefore, it is an object of the present invention to provide an aqueous patch having excellent drug releasability from the preparation and having high sustained drug efficacy and a support used therefor.
- the inner fiber layer that holds the paste, the film layer provided with through holes, and the liquid component that exudes from the paste or the paste are prevented from leaking to the outside. It was found that the support having a three-layer structure in which the outer fiber layer having air permeability is bonded can stably control the moisture in the plaster, and can solve the above-mentioned problems, thereby completing the present invention. It is a thing.
- the aqueous patch of the present invention obtained by coating a plaster containing water on the inner fiber layer side of a support having a three-layer structure composed of an outer fiber layer has a moisture content as compared with a conventional aqueous patch. Since the content is appropriately adjusted, the following excellent effects can be exhibited. ⁇ Provides proper water supply to the skin. ⁇ It is strong against sweating and is not easily peeled off even during exercise during application. Also, after application, it does not leave a plaster residue on the skin and is excellent in usability. ⁇ If a drug is added, the therapeutic effect can be maintained for a long time. • Other effects will be apparent from the following description.
- FIG. 3 schematically shows a cross section of the three-layer structure support and the aqueous patch described in Example 1.
- FIG. (A) and (B) schematically show a cross section of a support having a three-layer structure of the present invention.
- (C) is a schematic representation of the cross section of the aqueous patch of the present invention.
- 3 shows changes in the water content of each preparation of Test Example I-1.
- 3 shows changes in the water content of each preparation of Test Example II-1.
- 3 shows in vitro skin permeability test results of each preparation of Test Example II-3. The in-vitro skin permeability test result of each formulation of Test Example III is shown.
- 3 shows changes in the water content of each preparation of Test Example IV-1.
- the in-vitro skin permeability test result of each formulation of Test Example IV-3A is shown.
- the in-vitro skin permeability test result of each formulation of Test Example IV-3B is shown.
- 3 shows the blood concentration measurement results of rats in each preparation of Test Example IV-4.
- a support for an aqueous patch comprising a three-layered film layer in which a through-hole is provided between an inner fiber layer and a breathable outer fiber layer.
- 2. The support for an aqueous patch according to 1 above, wherein the inner fiber layer is an inner fiber layer provided with through holes.
- 3. The aqueous patch support according to 1 or 2 above, wherein the moisture permeability of the support is 1000 to 5000 g / m 2 ⁇ 24 h. 4). Opening area of the film layer 1 cm 2 per through-hole, aqueous patch support according to any one of 1 ⁇ 18 mm 2 and is 1 to 3 above. 5.
- An aqueous patch comprising a film layer provided with through-holes between an inner fiber layer and a breathable outer fiber layer, and a plaster disposed on the inner fiber layer side of a three-layer support. 7.
- the aqueous patch according to 6 above, wherein the drug in the plaster is a nonsteroidal anti-inflammatory agent or a local anesthetic. 14 7. The aqueous patch according to 6 above, wherein the drug in the plaster is ketoprofen or felbinac. 15. 7. The aqueous patch according to the above 6, wherein the drug in the plaster contains lidocaine.
- the support having a three-layer structure of the present invention is produced by laminating a film layer on an outer fiber layer and an inner fiber layer on the outer fiber layer by an appropriate bonding means.
- the inner fiber layer is provided to hold the plaster component.
- the base material used for the inner fiber layer may be a nonwoven fabric, a woven fabric, or a material directly sprayed with a fiber component, and the material and basis weight are not particularly limited as long as the paste containing water can be retained.
- the material include polyethylene, polypropylene, polyester, and olefin elastomer, and the weight per unit area is preferably 15 to 80 g / m 2 .
- the film layer is provided mainly to control moisture evaporation.
- the material of the substrate used for the film layer include polyethylene, polypropylene, and olefin elastomer, and the thickness is not particularly limited, but is preferably 5 to 50 ⁇ m.
- the outer fiber layer is provided to prevent leakage of the paste from the inside or the liquid component exuded from the paste to the outside.
- the base material used for the fiber layer may be a non-woven fabric, a woven fabric or a fiber component directly sprayed, each of which has a breathable fiber component used in general patches. If it is, it will not specifically limit, For example, polyethylene, a polypropylene, polyester, and an olefin type elastomer are illustrated.
- the weight per unit area of the outer fiber layer is preferably 15 to 80 g / m 2 .
- Perforations in the film layer can be formed by needles, laser processing, or the like.
- the perforation process is determined by the opening area per 1 cm 2 of the film (hereinafter referred to as opening area), the number of through holes, and the through hole area per one.
- opening area the opening area per 1 cm 2 of the film
- the number of through holes the through hole area per one.
- Hot needle machining is recommended.
- the opening area, the number of through-holes, and the number of through-holes per piece are factors that affect the film strength and conversely the flexibility of the support. It needs to be adjusted.
- the area of the opening is preferably 1 to 18 mm 2 per 1 cm 2 of the film layer, more preferably 1 to 10 mm 2 . If the area of the opening is smaller than 1 mm 2, the moisture permeability of the support becomes too low, and the physical properties of the paste deteriorate due to excessive moisture in the paste, and the paste remains on the skin easily. On the other hand, if the area of the opening exceeds 18 mm 2 , excessive moisture will evaporate, resulting in the plaster becoming hard and undesirable effects such as a decrease in adhesive strength. On the other hand, the number of through-holes is preferably 5 to 90 per 1 cm 2 as a standard, and more preferably 10 to 80.
- the through hole area per piece is preferably 0.01 to 0.8 mm 2 , more preferably 0.01 to 0.5 mm 2 . More preferably, it is 0.02 to 0.18 mm 2 .
- the through-hole area per piece is smaller than 0.01 mm 2, it is difficult to form a uniform through-hole, and conversely, when the through-hole area per piece is larger than 0.8 mm 2 , The plaster oozes out.
- FIG. 1B schematically shows a support of the present invention in which through holes are provided in the inner fiber layer.
- the through hole can be formed by a needle, laser processing or the like.
- the positions of the through holes made in the film layer and the through holes made in the inner fiber layer may or may not be aligned.
- the inner fiber layer and the film layer are aligned so that the inner fiber layer and the film layer are aligned with each other. It is preferable to do.
- the paste component is filled up to the through hole of the film through the through hole of the inner fiber layer, and the paste is directly below the outer fiber layer. It becomes possible to invade. This is because even when the support expands and contracts due to the movement of the application site, the through hole is filled with the plaster, so that the through hole is not blocked by the expansion and contraction action of the support, and the moisture control is stable.
- the advantage is that The opening area of the inner fiber layer, the number of through-holes provided in the inner fiber layer, and the area of the through-hole per piece depend on the opening area of the film, the number of through-holes, and the area of the through-holes per piece. .
- the moisture permeability of the support of the present invention is preferably in the range of 1000 to 5000 g / m 2 ⁇ 24 h. More preferably, it is 2000 to 4000 g / m 2 ⁇ 24 h.
- the moisture permeability is less than 1000 g / m 2 ⁇ 24 h, the moisture content in the plaster becomes too high, resulting in a decrease in the strength of the paste and skin irritation caused by stuffiness, etc., resulting in 5000 g / m 2 ⁇
- it exceeds 24 h the adhesiveness is reduced.
- the film layer and the inner fiber layer are bonded together using heat fusion or an adhesive and subjected to perforation treatment, and then the outer fiber layer is adhered to the heat fusion or adhesive.
- the inner fiber layer and the outer fiber layer may be bonded together using heat fusion or an adhesive. It is necessary to prevent through-holes from forming in the layer.
- the plaster component applied to the support of the present invention is mainly composed of water and water-soluble tackifier, and if necessary, a thickener, A cross-linking agent, a pH adjusting agent and the like are blended, and those having sufficient adhesiveness and shape retention are preferable.
- Water becomes a medium for dissolving the pressure-sensitive adhesive and thickener, and also provides a moisturizing effect due to the water supply action to the skin.
- the blending amount is preferably 20 to 70%, more preferably 30 to 50%, based on the total amount of the plaster.
- the tackifier adjusts the tackiness of the plaster and is selected from water-soluble polymers that are soluble in water. Examples thereof include polyacrylic acid, sodium polyacrylate, and partially neutralized polyacrylic acid, and one or more of them may be combined.
- the blending amount is preferably 3 to 25% with respect to the total amount of the plaster.
- the thickener adjusts the shape retention of the plaster and is selected from water-soluble polymers that are soluble in water. Examples include sodium carboxymethyl cellulose, hydroxypropyl cellulose, hydroxymethyl cellulose, and the like, and one or more of them may be combined.
- the blending amount is preferably 1 to 20% with respect to the total amount of the plaster.
- the cross-linking agent is a cross-linking agent that further adjusts the adhesiveness and shape retention of the plaster by cross-linking between water-soluble polymers, and a poorly soluble polyvalent metal salt is suitable. , Magnesium aluminate metasilicate, aluminum hydroxide, synthetic hydrotalcite, and the like, and one or more of them may be combined.
- the blending amount is preferably 0.01 to 5% with respect to the total amount of the plaster.
- the pH adjuster is a strong acid or strong salt, and long-term administration may cause excessive damage to the skin. Therefore, a suitable amount is added to adjust the pH of the paste to a weak acid, neutral, or weak alkali range. It is.
- the aqueous patch of the present invention in which the plaster is coated on the support of the present invention contains the water content in the initial preparation when the patch is allowed to stand at 40 ° C. for 4 hours. It is preferable to adjust the water content to 30 to 90%. More preferably, it is 30 to 85%, and further preferably 50 to 80%. Furthermore, you may mix
- Drugs include non-steroidal anti-inflammatory analgesics, corticosteroids, antihistamines, antipruritics, hypertensives, local anesthetics, antifungals, antiepileptics, vasodilators, hormones, muscle relaxants, stimulants, antiseptics A virus agent etc. are mentioned, You may mix
- the plaster laminated on the support is covered with a liner.
- the liner only needs to be able to stably protect the plaster surface, and examples thereof include polyethylene film, polypropylene film, polyester film, and processed paper.
- the aqueous patch of the present invention is produced by applying the plaster so as to be sandwiched between the inner fiber layer side of the support having a three-layer structure and the liner.
- the thickness of the paste layer can be adjusted to 300 to 1500 g / m 2 , but the support of the present invention has excellent adhesion stability even in a preparation in which a relatively thin paste is applied to the support.
- the thickness of the plaster is 300 to 1000 g / m 2 . More preferably, it is 300 to 700 g / m 2 . Thereafter, the aqueous patch is punched into an appropriate shape according to the application site and used as a patch.
- Example 1 As a fiber layer, 15 ⁇ m of a polyethylene film (ethylene-1-octene copolymer) was heat-sealed to 30 g / m 2 of a polyethylene non-woven fabric, and punched with a hot needle. Further, a polyethylene nonwoven fabric 30 g / m 2 as an outer fiber layer is partially bonded to the film surface opposite to the inner fiber layer with an adhesive, the number of holes is 16 / cm 2 , and the hole area is 0.13 mm 2 / A support having a three-layer structure with an opening area of 2.5 mm 2 / cm 2 was obtained. About this support body, the water vapor transmission rate of the support body was measured according to the method of Japanese Industrial Standard (JIS) L1099. The moisture permeability of this support was 994 g / m 2 ⁇ 24 h.
- JIS Japanese Industrial Standard
- the previously prepared polymer dispersion was gradually added and stirred until uniform to prepare a paste.
- the plaster is applied so as to be sandwiched between the inner fiber layer side of the support having a three-layer structure and a polypropylene film (50 ⁇ m) as a liner so that the weight is about 500 g / m 2. 10 cm ⁇ 14 cm
- the desired aqueous patch was obtained. The obtained patch was sealed in a packaging bag and stored at room temperature.
- Examples 2-8 A three-layer structure support in which the hole area and the opening area were adjusted was prepared by punching with a hot needle, and the moisture permeability of each support was measured. Table 1 shows the hole area, the opening area, and the measured moisture permeability of each support. In addition, each support was used to apply a paste prepared in the same manner as in Example 1 to the support to prepare an aqueous patch of each example. Each obtained patch was sealed in a packaging bag and stored at room temperature.
- Comparative Example 1 Using a polyester non-woven fabric (weight per unit area: 100 g / m 2 ) as a support, a paste prepared in the same manner as in Example 1 was applied to the support to prepare a patch of Comparative Example 1. The obtained patch was sealed in a packaging bag and stored at room temperature.
- Comparative Example 2 Ethylene methyl methacrylate was heat-sealed to a thickness of 15 ⁇ m on a nonwoven fabric mixed with 60% rayon, 28% polyethylene, and 12% polypropylene to prepare a support. The moisture permeability of this support is shown in Table 1. Using this support, a paste prepared in the same manner as in Example 1 was applied to the support to prepare an aqueous patch of Comparative Example 2. The obtained patch was sealed in a packaging bag and stored at room temperature.
- Comparative Example 3 50% calcium carbonate was mixed with polyethylene and stretched to a thickness of 40 ⁇ m to prepare a microporous film. A polyethylene nonwoven fabric 45 g / m 2 was bonded to this film to produce a support of Comparative Example 3. The moisture permeability of this support is shown in Table 1. Using this support, a paste prepared in the same manner as in Example 1 was applied to the support to prepare an aqueous patch of Comparative Example 3. The obtained patch was sealed in a packaging bag and stored at room temperature. This support was prepared with reference to the description in Patent Document 5.
- Test Example I-1 Measurement of Water Content in Patches
- the weight of each patch over time was measured and converted into a reduced amount of water to determine the change in the water content in the plaster.
- the result is shown in FIG.
- the moisture content is shown as% of the initial value, with the initial moisture content being 100%.
- the numerical value of the moisture content in the plaster after 4 hours of drying is shown in Table 1.
- Test Example I-2 Adhesive Strength Test of Patches The adhesive strengths of the patches of Examples 4, 5, and 7 and the patches of Comparative Examples 1 and 3 were determined according to the method described in Japanese Industrial Standard (JIS) Z0237. Was measured. Moreover, each said formulation was preserve
- Test Example I-3 Patch Adhesiveness Evaluation Test For the patches of Examples 4 and 5 and the patches of Comparative Examples 1 and 2, the test preparation was applied to 3 healthy adult men for 24 hours to evaluate the adhesiveness. A test was conducted. The results are shown in Table 3.
- Example 9 As an inner fiber layer, 20 ⁇ m of a polyethylene film (ethylene-1-octene copolymer) was heat-sealed to 30 g / m 2 of a polyethylene non-woven fabric, and punched with a hot needle. Furthermore, 50 g / m 2 of polyethylene non-woven fabric is partially bonded to the film surface opposite to the inner fiber layer with an adhesive as the outer fiber layer, the number of holes is 32 / cm 2 , and the average hole area is 0.099 mm. A support having a three-layer structure with 2 / piece and an opening area of 3.7 mm 2 / cm 2 was obtained. The moisture permeability of this support was 3700 g / m 2 ⁇ 24 h.
- a polyethylene film ethylene-1-octene copolymer
- a plaster was prepared. 40 g of polyacrylic acid partial neutralized product, 40 g of sodium carboxymethylcellulose, 2.5 g of hydroxypropylcellulose and 0.7 g of dihydroxyaluminum aminoacetate were added to 390 g of glycerin and dispersed (polymer dispersion).
- This plaster was applied so as to be sandwiched between the inner fiber layer side of the support having a three-layer structure and a 50 ⁇ m polypropylene film so as to have a weight of about 300 g / m 2, and punched out to 10 cm ⁇ 14 cm. A patch was obtained. The obtained patch was sealed in a packaging bag and stored at room temperature.
- Comparative Examples 4-7 Using a polyester nonwoven fabric (weight per unit area: 100 g / m 2 ) as a support, patches of each comparative example were prepared in the same manner as in Example 9 according to the paste composition shown in Table 5.
- Test Example II-1 Moisture content measurement test of patches For samples in which the patches of Examples 9-12 and the patches of Comparative Examples 4-7 were stored under dry conditions at 40 ° C, the weight of each patch over time was measured and converted into a reduced amount of water to determine the change in the water content in the plaster. The result is shown in FIG. In the figure, the moisture content is shown as% of the initial value, with the initial moisture content being 100%.
- Test Example II-2A Adhesive strength test of adhesive patches The adhesive strength of the adhesive patches of Examples 9 to 12 and the adhesive patches of Comparative Examples 4 to 7 was measured according to the method described in Z0237 of Japanese Industrial Standard (JIS). . Each patch was stored under dry conditions at 40 ° C., and the change in adhesive strength over time was determined. The test results are shown in Table 6. The adhesive strength in the table is indicated by the weight (g) of the steel ball stopped on the plaster surface. The numerical values in parentheses indicate the water content (vs. initial%) in the plaster after drying for 4 hours at 40 ° C. of each preparation.
- Test Example II-2B Adhesive strength test of adhesive patches The adhesive strength of the adhesive patches of Examples 13 to 18 was measured in accordance with the method described in Z0237 of Japanese Industrial Standard (JIS). Each patch was stored under dry conditions at 40 ° C., and the change in adhesive strength over time was determined. The results are shown in Table 7. The adhesive strength in the table is indicated by the weight (g) of the steel ball stopped on the plaster surface. The numerical values in parentheses indicate the water content (vs. initial%) in the plaster after drying for 4 hours at 40 ° C. of each preparation.
- Test Example II-3 Ketoprofen-containing patch in vitro excised skin permeability test in hairless rats
- the patches of Examples 10 and 12 and the patches of Comparative Examples 5 and 7 were punched out into a diameter of 14 mm to obtain a test preparation.
- the excised skin of hairless rats was attached to a Franz diffusion cell, and each test preparation was affixed to the upper part of the excised skin.
- a phosphate buffer was used as the receptor, and the receptor solution was collected over time, and the amount of ketoprofen in the collected solution was measured and converted as the amount passing through the removed skin. The results are shown in FIG.
- each of the preparations of Examples showed ketoprofen release properties superior to those of Comparative Examples.
- Amount cumulative permeation amount 24 hours after starting the test of the example / cumulative permeation 24 hours after starting the test of the comparative example
- Comparative Examples 8 and 9 A polyester non-woven fabric (weight per unit area 115 g / m 2 ) was used as a support, and an aqueous patch of each comparative example was prepared in the same manner as in Example 8 according to the formulation shown in Table 8.
- Test Example III Extracted Skin Permeability Test of Felbinac-Containing Patch A test similar to Test Example II-3 was conducted on a preparation in which the patches of Examples 19 and 20 and the patches of Comparative Examples 8 and 9 were punched to a diameter of 14 mm. The felbinac release from each formulation was examined. The results are shown in FIG.
- the formulation of an Example showed the felbinac release property superior to the formulation of a comparative example.
- the release amount of the patch of the example and the patch of the comparative example cumulative permeation amount 24 hours after the start of the test of the example / cumulative permeation amount 24 hours after the start of the test of the comparative example
- the preparation of the example showed a release property about 2.7 times that of the preparation of the comparative example, and was a preparation excellent in release of felbinac.
- Comparative Examples 11-13 Using a polyester nonwoven fabric (weight per unit area 125 g / m 2 ) as a support, an aqueous patch of each comparative example was produced in the same manner as in Example 9 according to the formulation shown in Table 9.
- Test Example IV-1 Measurement of Moisture Content of Patches
- the weight of each patch over time was measured and converted into a reduced amount of water to determine the change in the water content in the plaster.
- the result is shown in FIG. In the figure, the moisture content is shown as% of the initial value, with the initial moisture content being 100%.
- Test Example IV-2 Adhesive Strength Test of Patch Adhesive strength of the patches of Examples 21 and 22 and the patches of Comparative Examples 10 and 11 was measured according to the method described in Z0237 of Japanese Industrial Standard (JIS). . Each aqueous patch was stored under dry conditions at 40 ° C., and the change in adhesive strength over time was determined. The test results are shown in Table 10. The adhesive strength in the table is indicated by the weight (g) of the steel ball stopped on the plaster surface. The numerical values in parentheses indicate the water content (vs. initial%) in the plaster after drying for 4 hours at 40 ° C. of each preparation.
- Test Example IV-3A Extracted Skin Permeability Test of Lidocaine-Containing Patch
- the same test as in Test Example II-3 was performed. Lidocaine release from each formulation was examined. The result is shown in FIG.
- Test Example IV-3B Extracted Skin Permeability Test of Lidocaine-Containing Patch A formulation in which the patches of Examples 22 and 23 and the patches of Comparative Examples 11 and 12 were punched into a diameter of 14 mm was the same as in Test Example II-3 Studies were conducted on the release of lidocaine from each formulation. The result is shown in FIG.
- Test Example IV-4 Lidocaine-containing Patch Lidocaine Blood Concentration
- the patch of Example 23 and the patch of Comparative Example 12 were punched out to a size of 2 cm ⁇ 3 cm to obtain a test preparation.
- Each test preparation was affixed to the back of hairless rats, blood was collected over time, and the amount of lidocaine in the collected blood was measured. The results are shown in FIG.
- the adhesive patch of the present invention can reliably control water evaporation regardless of the composition of the plaster, so that the adhesive strength and adhesive stability are high, and the plaster drug is blended. It was confirmed that the drug product had excellent drug release and sustained drug efficacy.
- the aqueous patch of the present invention obtained by applying a plaster containing water between the inner fiber layer side of the support having a three-layer structure consisting of layers and the liner is capable of moderately evaporating water from the plaster. Therefore, it is very useful as a patch that can be applied for a long time. In addition, it is a patch excellent in drug releasability and sustained drug efficacy when a drug is added to the plaster.
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Abstract
Description
水性貼付剤の透湿性には支持体の特性が大きく関わっている。例えば織布あるいは不織布を支持体として用いた場合、これらは透湿性が大きく、短時間で膏体中の水分含量の低下を招き、膏体成分が固くなりやすく、その結果、粘着力が低下するという欠点がある。一方、支持体としてプラスチック等のフィルムを用いた場合は水分蒸発を大きく遮断できるが、長期間貼付した場合、汗、患部からの滲出液等に起因する膏体の凝集破壊が生じ、貼付剤の粘着性が低下したり、蒸れによるかぶれ等の原因となる場合が多い。
しかし、これらの水性貼付剤は保存中、膏体に含まれる油脂等の成分がフィルムに浸透し、しわ、よれ等の品質不良を生じたり、フィルム表面に成分が染み出してべとつき等の問題が発生したりすることがある。
・肌への供水作用を適切に維持できる。
・発汗に強く、貼付中、運動しても剥がれ難く、また貼付後、剥がす際に肌への膏体残りが生じず、使用性に優れている。
・薬物を配合した場合、長時間治療効果を持続できる。
・その他の効果は、以下の記載から明らかであろう。
1.内繊維層と通気性を有する外繊維層の間に、貫通孔を設けたフィルム層を配し、三層からなる水性貼付剤用支持体。
2.内繊維層が貫通孔を設けた内繊維層である上記1に記載の水性貼付剤用支持体。
3.支持体の透湿度が1000~5000g/m2・24hである、上記1または2に記載の水性貼付剤用支持体。
4.貫通孔の開口部面積がフィルム層1cm2あたり、1~18mm2である上記1~3のいずれかに記載の水性貼付剤用支持体。
5.1個あたりの貫通孔面積が0.01~0.8mm2である、上記1~4のいずれかに記載の水性貼付剤用支持体。
6.内繊維層と通気性を有する外繊維層の間に、貫通孔を設けたフィルム層を配し、三層からなる支持体の内繊維層側に膏体を配してなる水性貼付剤。
7.支持体の内繊維層が貫通孔を設けた内繊維層である上記6に記載の水性貼付剤。
8.支持体の透湿度が1000~5000g/m2・24hである、上記6に記載の水性貼付剤。
9.支持体の貫通孔の開口部面積がフィルム層1cm2あたり、1~18mm2である上記6に記載の水性貼付剤。
10.支持体の貫通孔の開口部面積が1個あたりの貫通孔面積が0.01~0.8mm2である、上記6に記載の水性貼付剤用支持体。
11.膏体中の水分含量が40℃で4時間静置したときに、30~90%残存しうるように、支持体のフィルム層が穿孔されてなる上記6に記載の水性貼付剤。
12.膏体が薬物を含有する上記6に記載の水性貼付剤。
13.膏体中の薬物が非ステロイド性消炎剤または局所麻酔剤である上記6に記載の水性貼付剤。
14.膏体中の薬物がケトプロフェンまたはフェルビナクである上記6に記載の水性貼付剤。
15.膏体中の薬物がリドカインを含有する上記6に記載の水性貼付剤。
本発明の三層構造の支持体は、外繊維層の上にフィルム層、そしてその上に内繊維層を適当な接着手段で貼り合わせることにより製造される。
内繊維層の開口部面積、内繊維層に設ける貫通孔の個数、および1個当たりの貫通孔の面積は、フィルムの開口部面積、貫通孔の個数、および1個当たりの貫通孔の面積に従う。
水は、粘着剤、増粘剤を溶解するための媒体となり、また、肌への供水作用により保湿効果を与える。その配合量は、膏体全量に対して20~70%が好ましく、より好ましくは30~50%である。
粘着付与剤は、膏体の粘着性を調整するものであり、水に可溶の水溶性高分子から選ばれる。ポリアクリル酸、ポリアクリル酸ナトリウム、ポリアクリル酸部分中和物などが挙げられ、それらの1種または2種以上を組み合わせてもよい。その配合量は、膏体全量に対して3~25%が好ましい。
架橋剤は、架橋剤は水溶性高分子間を架橋することにより、膏体の粘着性、保形性をさらに調整するものであり、難溶性多価金属塩が適切であり、ジヒドロキシアルミニウムアミノアセテート、メタケイ酸アルミン酸マグネシウム、水酸化アルミニウム、合成ヒドロタルサイトなどが挙げられ、それらの1種または2種以上を組み合わせてもよい。その配合量は、膏体全量に対して0.01~5%が好ましい。
また本発明の支持体に膏体が塗工された本発明の水性貼付剤は、貼付剤を恒温漕に40℃で4時間静置した場合に、その水分含量が初期製剤に含有されている水分量の30~90%となるように調整するのが好ましい。より好ましくは30~85%、さらに好ましくは50~80%である。
さらに、該膏体には治療効果のある薬物を配合してもよい。薬物は、非ステロイド性消炎鎮痛剤、コルチコステロイド剤、抗ヒスタミン剤、鎮痒剤、高血圧剤、局所麻酔剤、抗真菌剤、抗てんかん剤、血管拡張剤、ホルモン剤、筋弛緩剤、刺激剤、抗ウィルス剤などが挙げられ、これらの1種か、または2種以上配合してもよい。
その他、膏体に必要に応じ、安定化剤、防腐剤、油脂、界面活性剤等を配合してもよい。
本発明の水性貼付剤の製造は、膏体を三層構造の支持体の内繊維層側とライナーとの間に挟み込むように塗工して、製造される。その際、膏体層の厚みは300~1500g/m2に調整することができるが、本発明の支持体は、比較的薄い膏体を支持体に塗工した製剤においても優れた粘着安定性及び薬物の持続的な薬理効果を示すことが可能であるため、特に膏体の厚さを300~1000g/m2に調整することが好ましい。より好ましくは300~700g/m2である。その後、水性貼付剤を適用部位に応じて適当な形状に打抜き、貼付剤として使用する。
繊維層としてポリエチレン不織布30g/m2にポリエチレンフィルム(エチレン-1-オクテン共重合体)15μmを熱融着し、熱針で穿孔処理を施した。さらに内繊維層と反対側のフィルム面に、外繊維層としてポリエチレン不織布30g/m2を部分的に接着剤で貼り合わせ、孔数が16個/cm2で、孔面積が0.13mm2/個、開口部面積が2.5mm2/cm2となる三層構造の支持体を得た。
この支持体につき、日本工業規格(JIS)のL1099に記載の方法に準じ、支持体の透湿度を測定した。この支持体の透湿度は994g/m2・24hであった。
この膏体を、重量が約500g/m2となるように、三層構造の支持体の内繊維層側とライナーとしてのポリプロピレンフィルム(50μm)の間に挟み込むように塗工し、10cm×14cmに打ち抜き、所望の水性貼付剤を得た。得られた貼付剤を包装袋に入れ密封し、室温保管した。
熱針による穿孔処理により、孔面積、および開口部面積を調整した三層構造支持体を作製し、各支持体の透湿度を測定した。
各支持体の孔面積、開口部面積、および測定された透湿度を表1に示す。
また各支持体を用い、実施例1と同様に膏体を調製した膏体を、支持体に塗工し、各実施例の水性貼付剤を作製した。得られた各貼付剤を包装袋に入れ密封し、室温保管した。
ポリエステル不織布(目付重量:100g/m2)を支持体として用い、実施例1と同様に膏体を調製した膏体を、支持体に塗工し、比較例1の貼付剤を作製した。得られた貼付剤を包装袋に入れ密封し、室温保管した。
レーヨン60%、ポリエチレン28%、ポリプロピレン12%の割合で混合した不織布にエチレンメチルメタクリレートを厚さ15μmになるように熱融着し、支持体を作製した。
この支持体の透湿度を表1に示す。
この支持体を使用し、実施例1と同様に膏体を調製した膏体を、支持体に塗工し、比較例2の水性貼付剤を作製した。得られた貼付剤を包装袋に入れ密封し、室温保管した。
ポリエチレンに炭酸カルシウム50%を混合、厚さ40μmになるように延伸し、微多孔膜フィルムを調製した。このフィルムにポリエチレン不織布45g/m2を貼り合わせ、比較例3の支持体を作製した。
この支持体の透湿度を表1に示す。
この支持体を使用し、実施例1と同様に膏体を調製した膏体を、支持体に塗工し、比較例3の水性貼付剤を作製した。得られた貼付剤を包装袋に入れ密封し、室温保管した。
なお、この支持体は、特許文献5の記載を参考に作製した。
実施例1~8の貼付剤と比較例1~3の貼付剤を40℃の乾燥条件で保存した試料について、経時的に、各貼付剤の重量を測定し、減少した水分量に換算して、膏体中の水分含量の変化を求めた。その結果を図2に示す。図中、水分含量は初期の水分含量を100%とし、対初期値%で示している。また乾燥4時間後の膏体中水分含量の数値については表1に示す。
実施例4、5、7の貼付剤および比較例1、3の貼付剤について日本工業規格(JIS)のZ0237に記載の方法に準じ、それぞれの粘着力を測定した。
また、上記各製剤を40℃の乾燥条件で保存し、経時的な粘着力変化を求めた。試験結果を表2に示す。なお、表中における粘着力は膏体面で停止したスチールボールの重量(g)で示している。また、カッコ内の数値はそれぞれの製剤の40℃で4時間乾燥後の膏体中の水分含量(対初期%)を示している。
実施例4、5の貼付剤および比較例1、2の貼付剤につき、健常成人男性3名に試験製剤を24時間貼付し、貼付性を評価する試験を行った。結果を表3に示す。
表2に示したように、実施例の貼付剤はいずれも良好な粘着力が維持された。これは、図2の結果より、各実施例の貼付剤については、膏体中の水分の蒸発が緩やかで安定的であるため、膏体の粘着物性の変化が少ないことに起因するものと判断できる。
また表3に示した貼付試験の結果からも、実施例の貼付剤が比較例の貼付剤より、その貼付性において格段に優れていることが実証されている。すなわち、本発明の各実施例の貼付剤が24時間貼付後において、製剤の剥がれ、および剥離時の膏体残りが些少であったのに対し、比較例1及び2の貼付剤は、皮膚からの製剤の剥がれの度合いが大きく、24時間貼付に耐えることができないものもあった。特に比較例1の製剤に関しては剥離時に痛みを感じる被験者もおり、貼付中の水分蒸発が急激であることに起因する膏体物性の変化の大きさが確認された。また比較例2の貼付剤では、剥離時の膏体残りが大きいことから、比較例2の貼付剤の支持体では膏体の水分コントロールが不十分で、膏体物性の低下が著しいことが明らかとなった。
内繊維層としてポリエチレン不織布30g/m2にポリエチレンフィルム(エチレン-1-オクテン共重合体)20μmを熱融着し、熱針で穿孔処理を施した。さらに内繊維層と反対側のフィルム面に、外繊維層としてポリエチレン不織布50g/m2を部分的に接着剤で貼り合わせ、孔数が32個/cm2で、平均の孔面積が0.099mm2/個、開口部面積が3.7mm2/cm2となる三層構造の支持体を得た。この支持体の透湿度は3700g/m2・24hであった。
精製水436.7gにポリアクリル酸50g、酒石酸50g及びエデト酸ナトリウム0.6gを加え混合した溶液に、クロタミトン5g、ジイソプロパノールアミン5g、N-メチル-2-ピロリドン5g及び精製水5gの混合液にケトプロフェン3gを溶解した溶液と、プロピレングリコール10gにメチルパラベン1g及びプロピルパラベン0.5gを溶解した溶液とを加え、混合した。
この混合液を撹拌しながら、先に調製した分散液を徐々に加え、均一になるまで撹拌し、膏体を作製した。
この膏体を、重量が約300g/m2となるように、三層構造の支持体の内繊維層側と50μmポリプロピレンフィルムの間に挟み込むように塗工し、10cmX14cmに打ち抜き、実施例9の貼付剤を得た。得られた貼付剤を包装袋に入れ密封し、室温保管した。
表4に示す膏体組成に従い、実施例9と同様な方法にて、各実施例の貼付剤を作製した。
ポリエステル不織布(目付重量:100g/m2)を支持体として用い、表5に示す膏体組成に従い、実施例9と同様な方法にて各比較例の貼付剤を作製した。
実施例9~12の貼付剤と比較例4~7の貼付剤を40℃の乾燥条件で保存した試料について、経時的に、各貼付剤の重量を測定し、減少した水分量に換算して、膏体中の水分含量の変化を求めた。その結果を図3に示す。図中、水分含量は初期の水分含量を100%とし、対初期値%で示している。
実施例9~12の貼付剤と比較例4~7の貼付剤につき、日本工業規格(JIS)のZ0237に記載の方法に準じ、粘着力を測定した。また、各貼付剤を40℃の乾燥条件で保存し、経時的な粘着力変化を求めた。試験結果を表6に示す。なお、表中における粘着力は膏体面で停止したスチールボールの重量(g)で示している。また、カッコ内の数値はそれぞれの製剤の40℃で4時間乾燥後の膏体中の水分含量(対初期%)を示している。
実施例13~18の貼付剤につき、日本工業規格(JIS)のZ0237に記載の方法に準じ、粘着力を測定した。また、各貼付剤を40℃の乾燥条件で保存し、経時的な粘着力変化を求めた。結果を表7に示す。なお、表中における粘着力は膏体面で停止したスチールボールの重量(g)で示している。また、カッコ内の数値はそれぞれの製剤の40℃で4時間乾燥後の膏体中の水分含量(対初期%)を示している。
実施例10、12の貼付剤及び比較例5、7の貼付剤を直径14mm円に打ち抜き、試験製剤とした。
ヘアレスラットの摘出皮膚をフランツ型拡散セルに装着し、各々の試験製剤を摘出皮膚上部に貼付した。レセプターにはリン酸緩衝液を用い、経時的にレセプター液を採取し、採取液中のケトプロフェン量を測定、摘出皮膚を通過する量として換算した。結果を図4に示す。
i)粘着性に関して
(1) 膏体の厚みと粘着力について
表6の結果より、いずれの厚さの膏体においても、実施例の貼付剤は、比較例の貼付剤より優れた粘着性を示した。特に比較例の製剤において、膏体の厚みが500g/m2以下の製剤については、乾燥8時間後にはほとんど粘着力を示さないが、一方実施例の製剤は、膏体の厚さが300g/m2の製剤においても、比較例の厚さ1000g/m2の製剤と同等以上の粘着力を示した。
表7に示すように、すべての実施例の製剤において優れた粘着性を示すことが判明した。特に比較的水分含量が低い実施例13~16(初期水分含量30%あるいは50%)の製剤において粘着安定性が優れていることが判明した。
図4より、実施例の各製剤は、比較例の製剤より優れたケトプロフェン放出性を示した。特に同じ膏体厚を有する実施例の貼付剤と比較例の貼付剤とを比較した場合(実施例の試験開始後24時間目の累積透過量/比較例の試験開始後24時間目の累積透過量)、薄い製剤(500g/m2)のそれが2.7倍であり、厚い製剤(1000g/m2)の場合のそれが1.8倍であり、特に薄い製剤において、実施例の製剤のその効果が高いことが確認できた。
表8に示す処方構成に従い、実施例9と同様の方法で各実施例の水性貼付剤を作製した。
ポリエステル不織布(目付重量115g/m2)を支持体として用い、表8に示す処方構成に従い、実施例8と同様な方法で各比較例の水性貼付剤を作製した。
実施例19、20の貼付剤および比較例8、9の貼付剤を直径14mm円に打ち抜いた製剤につき、試験例II-3と同様な試験を行い、各製剤からのフェルビナク放出性の検討を行った。結果を図5に示す。
・薬物の放出性について
図5より、実施例の製剤は、比較例の製剤より優れたフェルビナク放出性を示した。実施例の貼付剤と比較例の貼付剤のその放出量とを比較した場合(実施例の試験開始後24時間目の累積透過量/比較例の試験開始後24時間目の累積透過量)、薄い製剤(500g/m2)、厚い製剤(1000g/m2)ともに実施例の製剤は比較例の製剤の約2.7倍の放出性を示し、フェルビナク放出性の優れた製剤であった。
表9に示す処方構成に従い、実施例9と同様の方法で各実施例の水性貼付剤を製造した。
ポリエステル不織布(目付け重量125g/m2)を支持体として用い、表9に示す処方構成に従い、実施例9と同様な方法で各比較例の水性貼付剤を作製した。
実施例21、22の貼付剤と比較例10、11の貼付剤を40℃の乾燥条件で保存した試料について、経時的に、各貼付剤の重量を測定し、減少した水分量に換算して、膏体中の水分含量の変化を求めた。その結果を図6に示す。図中、水分含量は初期の水分含量を100%とし、対初期値%で示している。
実施例21、22の貼付剤と比較例10、11の貼付剤につき、日本工業規格(JIS)のZ0237に記載の方法に準じ、粘着力を測定した。また、各水性貼付剤を40℃の乾燥条件で保存し、経時的な粘着力の変化を求めた。試験結果を表10に示す。なお、表中における粘着力は膏体面で停止したスチールボールの重量(g)で示している。また、カッコ内の数値はそれぞれの製剤の40℃で4時間乾燥後の膏体中の水分含量(対初期%)を示している。
実施例21の貼付剤及び比較例10の貼付剤を直径14mm円に打ち抜いた製剤につき、試験例II-3と同様な試験を行い、各製剤からのリドカイン放出性の検討を行った。その結果を図7に示す。
実施例22、23の貼付剤及び比較例11、12の貼付剤を、直径14mm円に打ち抜いた製剤につき、試験例II-3と同様な試験を行い、各製剤からのリドカイン放出性の検討を行った。その結果を図8に示す。
実施例23の貼付剤と比較例12の貼付剤を2cm×3cmに打ち抜き、試験製剤とした。ヘアレスラットの背部に各々の試験製剤を貼付し、経時的に採血を行い、採血液中のリドカイン量を測定した。結果を図9に示す。
i)粘着性に関して
表10に示すように、いずれの厚さの膏体においても、実施例の貼付剤は、比較例の貼付剤より優れた粘着性を示した。40℃において8時間乾燥後の比較例の製剤は、粘着力が急激に低下しているのに対して、実施例の製剤はほとんど粘着力が低下しておらず、実施例で使用した支持体による、膏体の粘着安定性に対する効果が実証できた。特に、膏体の厚さが500g/m2である製剤についてその傾向が顕著であることが併せて確認できた。
図7、8より、実施例の製剤は、比較例の製剤より優れたリドカイン放出性を示した。特に同じ膏体厚を有する実施例の貼付剤と比較例の貼付剤とを比較した場合(実施例の試験開始後24時間目の累積透過量/比較例の試験開始後24時間目の累積透過量)、薄い製剤(500g/m2)の場合のそれが3.4倍、および(より)薄い製剤(300g/m2)の場合のそれが2.8倍であるのに対し、厚い製剤(1000g/m2)の場合のそれが1.3倍であることから、薄い製剤において、本発明の貼付剤の効果がより顕著となった。
また図9より、実施例23の製剤は、貼付後半においても血中薬物濃度は維持されたが、比較例12の製剤は、低下した。このことから実施例の製剤は、より薬効が持続する製剤であることも確認できた。
Claims (15)
- 内繊維層と通気性を有する外繊維層の間に、貫通孔を設けたフィルム層を配し、三層からなる水性貼付剤用支持体。
- 内繊維層が貫通孔を設けた内繊維層である請求項1に記載の水性貼付剤用支持体。
- 支持体の透湿度が1000~5000g/m2・24hである、請求項1あるいは請求項2に記載の水性貼付剤用支持体。
- 貫通孔の開口部面積がフィルム層1cm2あたり、1~18mm2である請求項1~3のいずれかに記載の水性貼付剤用支持体。
- 1個あたりの貫通孔面積が0.01~0.8mm2である、請求項1~4のいずれかに記載の水性貼付剤用支持体。
- 内繊維層と通気性を有する外繊維層の間に、貫通孔を設けたフィルム層を配し、三層からなる支持体の内繊維層側に膏体を配してなる水性貼付剤。
- 支持体の内繊維層が貫通孔を設けた内繊維層である請求項6に記載の水性貼付剤。
- 支持体の透湿度が1000~5000g/m2・24hである、請求項6あるいは請求項7に記載の水性貼付剤。
- 支持体の貫通孔の開口部面積がフィルム層1cm2あたり、1~18mm2である請求項6に記載の水性貼付剤。
- 支持体の貫通孔の開口部面積が1個あたりの貫通孔面積が0.01~0.8mm2である、請求項6に記載の水性貼付剤用支持体。
- 膏体中の水分含量が40℃で4時間静置したときに、30~90%残存しうるように、支持体のフィルム層が穿孔されてなる請求項6に記載の水性貼付剤。
- 膏体が薬物を含有する請求項6に記載の水性貼付剤。
- 膏体中の薬物が非ステロイド性消炎剤または局所麻酔剤を含有する請求項6に記載の水性貼付剤。
- 膏体中の薬物がケトプロフェンまたはフェルビナクを含有する請求項6に記載の水性貼付剤。
- 膏体中の薬物がリドカインを含有する請求項6に記載の水性貼付剤。
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| CA2803242A CA2803242C (en) | 2010-07-12 | 2011-07-11 | Backing having three-layer structure and aqueous patch using the backing |
| BR112013000706-0A BR112013000706B1 (pt) | 2010-07-12 | 2011-07-11 | reforço tendo uma estrutura de três camadas e emplastro aquoso usando o reforço |
| CN201180034426.3A CN103124555B (zh) | 2010-07-12 | 2011-07-11 | 具有三层结构的背衬和使用该背衬的水性贴剂 |
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| US11888380B2 (en) | 2017-06-28 | 2024-01-30 | Linak A/S | Linear actuator |
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| US20170239093A1 (en) * | 2014-11-12 | 2017-08-24 | Asahi Kasei Kabushiki Kaisha | Perforated Plastic Film |
| EP3298996B1 (en) * | 2015-05-20 | 2023-04-26 | Nichiban Company Limited | Adhesive skin patch material, and support for adhesive skin patch material which can be used in same |
| NZ748440A (en) * | 2016-05-26 | 2022-07-01 | Gsquared Medical Llc | Multi-ply retractor/stabilizer and wound exposure device and method of use |
| EP3960238A4 (en) * | 2019-04-24 | 2023-01-25 | MEDRx Co., Ltd. | Lidocaine-containing patch |
| EP3988172A4 (en) * | 2019-06-24 | 2023-04-19 | Teikoku Seiyaku Co., Ltd. | WATER-BASED ADHESIVE PLASTER |
| KR102557479B1 (ko) * | 2023-04-10 | 2023-07-19 | (주)닥터스영앤영 | 필름형 패치 및 이의 제조방법 |
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Also Published As
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|---|---|
| ES2685172T3 (es) | 2018-10-05 |
| TW201216929A (en) | 2012-05-01 |
| CA2803242A1 (en) | 2012-01-19 |
| ZA201300183B (en) | 2013-09-25 |
| TR201815486T4 (tr) | 2018-11-21 |
| CN103124555A (zh) | 2013-05-29 |
| PT2594262T (pt) | 2018-11-27 |
| EP2594262A1 (en) | 2013-05-22 |
| KR101787801B1 (ko) | 2017-10-18 |
| SG186880A1 (en) | 2013-02-28 |
| US10583043B2 (en) | 2020-03-10 |
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| JP5854672B2 (ja) | 2016-02-09 |
| AU2011277558B2 (en) | 2015-01-22 |
| AU2011277558A1 (en) | 2013-01-31 |
| BR112013000706B1 (pt) | 2020-12-29 |
| US20130138057A1 (en) | 2013-05-30 |
| EP2594262B1 (en) | 2018-08-15 |
| TWI568422B (zh) | 2017-02-01 |
| EP2594262A4 (en) | 2014-01-01 |
| BR112013000706A2 (pt) | 2016-05-17 |
| CN103124555B (zh) | 2015-08-26 |
| CR20120666A (es) | 2013-05-16 |
| IL223715A (en) | 2017-03-30 |
| HUE040015T2 (hu) | 2019-02-28 |
| JP2012036170A (ja) | 2012-02-23 |
| MX2013000487A (es) | 2013-02-21 |
| MY160623A (en) | 2017-03-15 |
| CA2803242C (en) | 2018-09-25 |
| KR20140014058A (ko) | 2014-02-05 |
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