WO2019088227A1 - 歯科用局所麻酔マイクロニードルアレイ - Google Patents
歯科用局所麻酔マイクロニードルアレイ Download PDFInfo
- Publication number
- WO2019088227A1 WO2019088227A1 PCT/JP2018/040719 JP2018040719W WO2019088227A1 WO 2019088227 A1 WO2019088227 A1 WO 2019088227A1 JP 2018040719 W JP2018040719 W JP 2018040719W WO 2019088227 A1 WO2019088227 A1 WO 2019088227A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microneedle array
- microneedle
- local anesthetic
- anesthetic
- dental
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
- A61K31/13—Amines
- A61K31/135—Amines having aromatic rings, e.g. ketamine, nortriptyline
- A61K31/136—Amines having aromatic rings, e.g. ketamine, nortriptyline having the amino group directly attached to the aromatic ring, e.g. benzeneamine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/001—Holders for absorbent pads
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
- A61C19/063—Medicament applicators for teeth or gums, e.g. treatment with fluorides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
- A61C19/08—Implements for therapeutic treatment combined with anaesthetising implements
-
- 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
- A61K31/195—Carboxylic acids, e.g. valproic acid having an amino group
- A61K31/196—Carboxylic acids, e.g. valproic acid having an amino group the amino group being directly attached to a ring, e.g. anthranilic acid, mefenamic acid, diclofenac, chlorambucil
-
- 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
- A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
- A61K31/235—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids having an aromatic ring attached to a carboxyl group
- A61K31/24—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids having an aromatic ring attached to a carboxyl group having an amino or nitro group
- A61K31/245—Amino benzoic acid types, e.g. procaine, novocaine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/32—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers, poly(meth)acrylates, or polyvinyl pyrrolidone
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
- A61K47/38—Cellulose; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/60—Preparations for dentistry comprising organic or organo-metallic additives
- A61K6/69—Medicaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
- A61K9/0021—Intradermal administration, e.g. through microneedle arrays or needleless injectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
- A61K9/006—Oral mucosa, e.g. mucoadhesive forms, sublingual droplets; Buccal patches or films; Buccal sprays
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
- A61K9/0063—Periodont
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M19/00—Local anaesthesia; Hypothermia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P23/00—Anaesthetics
- A61P23/02—Local anaesthetics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0023—Drug applicators using microneedles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0046—Solid microneedles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0053—Methods for producing microneedles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M37/00—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin
- A61M37/0015—Other apparatus for introducing media into the body; Percutany, i.e. introducing medicines into the body by diffusion through the skin by using microneedles
- A61M2037/0061—Methods for using microneedles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0468—Liquids non-physiological
- A61M2202/048—Anaesthetics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/02—General characteristics of the apparatus characterised by a particular materials
- A61M2205/0244—Micromachined materials, e.g. made from silicon wafers, microelectromechanical systems [MEMS] or comprising nanotechnology
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2207/00—Methods of manufacture, assembly or production
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/06—Head
- A61M2210/0625—Mouth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/06—Head
- A61M2210/0625—Mouth
- A61M2210/0631—Gums
Definitions
- the present invention relates to the technical field of microneedles applied to dental (oral) local anesthesia.
- an anesthetic is applied to the oral (gum) mucosa, or an anesthetic is injected into the gum.
- dental topical anesthetics There are many commercially available dental topical anesthetics. They are mainly topical anesthetic agent-containing solutions, gels, jellies and the like, and the solutions are applied to the oral cavity by dipping in cotton wool or the like. Gel and jelly are applied as they are to the oral cavity. In either case, the time to effect is long because absorption of the anesthetic from the mucous membrane is slow, and the time it takes to lie down for a long time for the patient to wait and variations in mucosal absorption often cause a loss of QOL. .
- the microneedle preparation has high percutaneous absorbability, and development of cosmetics and medicines has been attempted.
- the application site of the microneedle preparation is the skin epidermis, but, for example, a microneedle patch as a vaccination by transoral buccal administration is known (Patent Document 1).
- the microneedle patch is designed to penetrate the outer layer of the inner buccal mucosa.
- microneedles for the transfer of dental substances such as local anesthetics for dental use have been developed (Patent Documents 2 and 3).
- Patent Document 2 includes a microneedle array and a hollow spherical container internally containing a dental local anesthetic, and the anesthetic is locally delivered through an opening penetrating the microneedle.
- Patent Document 3 is a microneedle provided with a base portion that bends along the skin shape inside the oral cavity, a microneedle main body portion, and an active ingredient coating portion coated on the surface of the needle main body portion.
- An object of the present invention is to provide a microneedle array which is easy to apply to the oral cavity and can exert an anesthetic effect according to the application site.
- the rapid surface anesthesia can be performed to a depth of 1 to 2 mm of the skin before injection of an anesthetic, the patient's QOL can be significantly improved.
- the present inventors have specified the shape and material of the microneedle array, thereby making the microneedle array suitable for dental local anesthesia. It came to invent.
- the present invention is as follows.
- An immediate-acting dental local anesthetic preparation which comprises a microneedle array containing a local anesthetic, and the needle portion dissolves in the mucous membrane by being attached to the oral mucosa or gum.
- the water-soluble polymer is one or more selected from the group consisting of hyaluronic acid and derivatives thereof, collagen, proteoglycan, hydroxypropylcellulose, chondroitin sulfate, carboxymethylcellulose, polyvinylpyrrolidone, polyethylene glycol, and dextran
- the dental local anesthetic preparation as described in, [3].
- a microneedle array based on a water-soluble polymer and containing a local anesthetic wherein the height of the microneedle is 50 ⁇ m to 300 ⁇ m, and the tip of the microneedle is a circle having a diameter of 1 ⁇ m to 50 ⁇ m Or the microneedle array which is a plane which has the same area as it, and the thickness of the substrate of a microneedle array is 5 micrometers or more and 100 micrometers or less.
- the water-soluble polymer is one or more selected from the group consisting of hyaluronic acid and derivatives thereof, collagen, proteoglycan, hydroxypropylcellulose, chondroitin sulfate, carboxymethylcellulose, polyvinylpyrrolidone, polyethylene glycol, and dextran , [11].
- microneedle array according to any one of [11] to [13], wherein the local anesthetic is selected from the group consisting of procaine, tetracaine, lidocaine, dibucaine, bupivacaine and salts thereof.
- the local anesthetic is a mixture of one or more selected from the group consisting of procaine, tetracaine, lidocaine, dibucaine, bupivacaine and salts thereof and ethyl aminobenzoate Microneedle array described in.
- microneedle array according to any one of [11] to [16], wherein the concentration of the local anesthetic in the base is 1% by mass to 80% by mass.
- concentration of the local anesthetic in the base is 1% by mass to 80% by mass.
- a microneedle patch comprising the microneedle array according to any one of [11] to [18] and a support provided on the back of the microneedle array.
- the microneedle patch according to [19], wherein the support has intraoral adhesiveness.
- the microneedle patch according to [20], wherein the support is coated with an adhesive substance.
- microneedle patch according to [20], wherein the support is water soluble.
- the microneedle array of the present invention is easy to manufacture because the substrate and the microneedles are integrally formed on the basis of a water-soluble polymer, and the amount of the local anesthetic contained and the size of the microneedle array By adjusting the height, the anesthetic effect according to the purpose can be achieved in a short time. Since the microneedle array and microneedle patch of the present invention use a water-soluble polymer as a base, they easily adhere to the bending of the oral mucous membrane or gums in a high humidity environment, and for topical administration in the oral cavity Is suitable.
- microneedle array and microneedle patch of the present invention can also be used as a dental local anesthetic preparation, and also as a pre-anesthetic for reducing pain at the administration site before administering a dental local anesthetic injection solution It is.
- FIG. 1 is a schematic view of a microneedle patch of the present invention.
- FIG. 1A uses the polyethylene adhesive film 1 as a support, the polyethylene adhesive film does not exist at the center of the back surface of the microneedle portion 3.
- the sterile paper 4 is used as a support, and the sterile paper is not present on the back of the microneedle portion 5 to form the outer frame of the microneedle patch.
- FIG. 2 is a schematic view of a microneedle patch with an ear for hand holding at a part of its end, with no support in the center of the back of the microneedle part 7.
- the microneedle array of the present invention is suitable for local anesthesia, particularly for dental local anesthesia.
- the microneedle array of the present invention comprises a substrate and a plurality of microneedles on the substrate, and is integrally formed of the same water-soluble polymer as a water-soluble polymer as a base.
- the base of the microneedle array is a water soluble polymer.
- the local anesthetic is contained not only in the microneedle portion but also in the substrate portion.
- the microneedle portion can reach in the mucous membrane or in the gums, whereby the microneedle portion dissolves in the mucous membrane and the included local anesthesia Promote the delivery of the agent to the target site.
- the substrate of the microneedle array also adheres following the bending of the oral mucosa or gums in a high humidity environment in the oral cavity, and the water-soluble polymer of the substrate dissolves, and the local anesthetic present there is also the target site Delivered to
- water-soluble polymers examples include hyaluronic acid and derivatives thereof (eg sodium salt, polyethylene oxide graft hyaluronic acid), collagen, proteoglycan, hydroxypropyl cellulose, chondroitin sulfate, carboxymethyl cellulose, polyvinyl pyrrolidone, polyethylene glycol or dextran, etc. And one or more selected from these may be mixed and used.
- hyaluronic acid or a derivative thereof is preferred.
- Hyaluronic acid is a type of glycosaminoglycan (mucopolysaccharide), and has a structure in which disaccharide units of N-acetylglucosamine and glucuronic acid are linked.
- examples of hyaluronic acid include hyaluronic acid derived from organisms isolated from chicken crown, umbilical cord and the like, and hyaluronic acid derived from culture mass-produced by lactic acid bacteria, streptococcus and the like. Since hyaluronic acid of biological origin can not completely remove the collagen possessed by the organism from which it is derived, it may have a negative effect on the remaining collagen, and therefore, hyaluronic acid derived from a culture not containing collagen is preferred. Therefore, the hyaluronic acid preferably contains 50% by mass or more of hyaluronic acid derived from culture.
- the microneedle array molded from these polymer substances becomes harder as the weight average molecular weight decreases
- the weight average molecular weight is preferably 5,000 to 2,000,000.
- the microneedle array When applying the microneedle array to the oral cavity, it is hard to break with an appropriate hardness, and a high molecular weight polymer substance with a weight average molecular weight of 100,000 or more and a weight average molecular weight to facilitate penetration of the local anesthetic
- the microneedle array may be formed from a mixture of low molecular weight polymer substances having a molecular weight of 50,000 or less.
- the weight average molecular weight of the high molecular weight polymer substance may be 50,000 or more, preferably 2,000,000 or less.
- the weight average molecular weight of the low molecular weight polymer substance may be 50,000 or less, preferably 1,000 or more.
- the weight average molecular weight is a value measured by gel permeation chromatography (GPC).
- the ratio in mixing the high molecular weight polymer substance and the low molecular weight polymer substance varies depending on the type and weight average molecular weight of each polymer substance, and accordingly, it may be appropriately determined so as to obtain preferable mechanical strength and hardness. In general, it is preferable that the content is 1% by mass or more of the high molecular weight polymer substance and 99% by mass or less of the low molecular weight polymer substance.
- a soluble agent may be added to the above-mentioned polymer substance in order to rapidly exert an anesthetic effect.
- the dissolvable agent include trehalose, monosaccharides such as glucose, disaccharides, polyhydric alcohols such as glycerin, propylene glycol (PG), butylene glycol (BG) and polyethylene glycol (PEG).
- the addition amount of the soluble agent is preferably 1% by mass or more and 50% by mass or less as the concentration in the base.
- polyvinyl pyrrolidone (PVP) and dextran may be added.
- the base of the microneedle array can contain a water soluble low molecular weight compound in addition to the water soluble polymer.
- the water-soluble low molecular weight compound is a monosaccharide, disaccharide or polyhydric alcohol used as the above-mentioned soluble agent, and is a compound having a molecular weight of 500 or less.
- monosaccharides include glucose and fructose
- disaccharides include sucrose, lactose, trehalose and maltose.
- polyhydric alcohols glycerin, propylene glycol (PG), butylene glycol (BG), polyethylene glycol (PEG) 200, PEG 400 and the like can be mentioned.
- the addition amount of the water-soluble low molecular weight compound is 2% by mass or more and 50% by mass or less as a concentration in the base, preferably 2% by mass or more and 35% by mass or less, more preferably 2% by mass or more and 30% by mass It is below.
- the height of the microneedles is preferably 50 ⁇ m or more and 300 ⁇ m or less, and more preferably 100 ⁇ m or more and 250 ⁇ m or less. Below 50 ⁇ m, it is disadvantageous for the delivery of local anesthetics. If it exceeds 300 ⁇ m, it may be accompanied by pain or bleeding when applied.
- the tip of the microneedle is desirably a circle having a diameter of 1 ⁇ m or more or a flat surface having the same area.
- the tip of the microneedle is preferably a circle having a diameter of 50 ⁇ m or less or a flat surface having the same area. Being within this range is advantageous for the delivery of local anesthetics.
- the needle shape may, for example, be a rod shape, a truncated cone shape or a conedite shape, preferably a truncated cone shape or a conede shape.
- the microneedle array comprises a flexible substrate.
- the thickness of the substrate of the microneedle array is desirably 5 ⁇ m or more and 100 ⁇ m or less, and more preferably 10 ⁇ m or more and 50 ⁇ m or less.
- the shape of the substrate of the microneedle array can be appropriately set according to the application site, and examples thereof include a circle, an ellipse, a triangle, a square, and a polygon.
- the size of the shape is usually 2 mm or more and 100 mm or less, preferably 5 mm or more and 50 mm or less, as represented by the diameter (long diameter) or the length of one side (long side). Also, when expressed by area the size of the microneedle array is usually 5 mm 2 or more 1000 mm 2 or less, preferably 10 mm 2 or more 500 mm 2 or less.
- the active ingredient contained in the microneedle array of the present invention is a local anesthetic.
- Local anesthetics include procaine, tetracaine, lidocaine, dibucaine, bupivacaine or their salts.
- the local anesthetic may be ethyl aminobenzoate (benzocaine).
- two or more of these local anesthetics can be mixed and used.
- a preferred combination is a combination (mixture) of one or more selected from the group consisting of procaine, tetracaine, lidocaine, dibucaine, bupivacaine and salts thereof with ethyl aminobenzoate.
- lidocaine or a salt thereof is preferred, and as a salt of lidocaine, lidocaine hydrochloride is preferred.
- additives which are usually contained as a pharmaceutical may be contained.
- concentration of the additive contained in the microneedle array of the present invention can be set in an appropriate range according to the type of additive and the purpose of addition.
- the concentration of the local anesthetic in the base is 1% by mass to 80% by mass, and more preferably 10% by mass to 70% by mass.
- the concentration of the local anesthetic in the base means the mass in the total weight of the microneedle array (the microneedle array is dissolved in a suitable solvent such as water, and the content of the local anesthetic is quantitatively analyzed, the microneedles Drug content in the solid mass of the array).
- the method for producing the microneedle array of the present invention is not particularly limited, and may be produced by any conventionally known method, for example, the above water-soluble polymer and the topical agent in a mold in which the shape of the microneedle is drilled. There is a method of casting an aqueous solution containing an anesthetic and, if necessary, other components, drying and peeling. The peeled microneedle array sheet is used by cutting in accordance with the shape of the application site in the oral cavity.
- microneedle array of the present invention can be used alone as a dental topical anesthetic preparation.
- the following microneedle patch may be used for the convenience of intraoral application.
- the microneedle patch of the present invention comprises the microneedle array and a support provided on the back of the microneedle array.
- the back surface of the microneedle array is a substrate portion on the side opposite to the surface on which the microneedles protrude.
- the support is not essential, but the presence of the support is easy to handle and can prevent the application site from slipping or moving inside the lip.
- a microneedle patch lined with a hydrophobic or non-dissolving film as a support on the back of the microneedle array is one embodiment of a dental topical anesthetic formulation. This dental local anesthetic preparation is a rapid acting dental local anesthetic preparation having immediate effects.
- the dosage form of the present invention can be in various forms. These will be described one by one.
- a microneedle patch in which a polymer film is backed as a support on the back of the dried microneedle array manufactured by the method for manufacturing a microneedle array as described above.
- the microneedle array is dried, and a polymer dissolved in water or a low boiling point organic solvent is applied to the back surface of the microneedle array by a method such as spraying, and then dried.
- the polymer is a water-soluble polymer such as polyvinyl alcohol, high molecular weight polyvinyl pyrrolidone, hydroxypropyl cellulose, or polyacrylic acid, and is a polymer that does not dissolve instantaneously in the oral cavity. More specifically, since the polymer film is backed as a support, it is necessary that the microneedle substrate does not dissolve and its shape does not collapse at least within 30 minutes after the application.
- the support may be a polymer soluble in an organic solvent such as polyvinyl acetate, polyvinyl chloride, nylon or the like, or a polymer obtained by softening them with a plasticizer. These are preferred embodiments of hydrophobic or non-dissolving films. 2.
- the formulation is integrated with the polymer film and the back of the microneedle array with an adhesive or adhesive.
- the size of the microneedle array and the polymer film may be equal, and the polymer film may be treated to have larger intraoral adhesion on the film surface.
- the polymeric film may be porous or water permeable, such as woven.
- plastic sheets or films such as polyethylene, polypropylene, polyethylene terephthalate, ethylene vinyl acetate copolymer (EVA); sterile paper, cellophane, nonwovens, paper sheets such as woven fabrics, silicone resin thin film by spray or application, spray or A fluorine oil thin film by coating, etc. may be mentioned.
- the size of the support may be the same size as that of the microneedle array, but is preferably larger than the microneedle array in order to reinforce the adhesion in the oral cavity of the microneedle array from the back.
- the support can be set to a size and a shape that can be easily handled according to the application site, and for example, it is appropriate to make it about 3 to 20 mm larger from the outer edge of the microneedle array.
- the thickness of the support may be equal to, greater than or less than the thickness of the microneedle array substrate, can support a flexible and thin microneedle array, and is easy to handle Can be set as appropriate. It may be shaped like an ear for hand holding at the end of the microneedle array (FIG. 2, polyethylene adhesive film 6). A part or the whole surface of the support may be colored, and it is easy for the doctor to forget to remove it after anesthesia, if there is a colored mark.
- the support is desirably intraoral adhesive in order to reinforce the intraoral adhesion of the microneedle array from the back.
- One embodiment for securing the intraoral adhesiveness of the support includes a support coated with an adhesive substance, that is, a support coated with an adhesive.
- an adhesive substance an adhesive generally used in patch preparations can be mentioned, and for example, a grade having an adhesive property of an acrylic, silicone, rubber adhesive having a wet surface is preferable.
- the support is water soluble. It is also preferable to use a low molecular weight water-soluble film such as polyvinyl pyrrolidone (PVP), carboxymethyl cellulose (CMC), polyvinyl alcohol (PVA) and the like and water self-adhesive in the oral cavity.
- PVP polyvinyl pyrrolidone
- CMC carboxymethyl cellulose
- PVA polyvinyl alcohol
- a film laminated to the back is effective because otherwise the back of the microneedle array tends to adhere to the oral mucosa opposite the patch mucosa.
- microneedle array of the present invention itself is provided as a dental local anesthetic preparation.
- part of the film-like support may have a defect not containing a film.
- the defect can be provided at the center of the film-like support, in which case the back of the microneedle is not covered by the film.
- the defective portion is not limited to the central portion, and when the injection needle is pierced at the site to which the microneedle patch of the present invention is applied, a portion not containing the film may be secured to the extent that the penetration of the needle is not prevented.
- the support may form an outer frame that encloses the microneedle array.
- the support may form an outer frame that encloses the microneedle array.
- a hole is provided in the center of the sterile paper, the back of the microneedle portion is not covered with the sterile paper, and the sterile paper forms the outer frame of the microneedle array.
- the outer frame may be provided to the extent that the sterile paper covers the entire back surface of the substrate of the microneedle array and does not prevent the penetration of the needle when the injection needle is pierced at the site to which the microneedle patch of the present invention is applied.
- the microneedle patch of the present invention can be manufactured by covering the back of the microneedle array with a support.
- the microneedle array and microneedle patch of the present invention are applied to the oral mucous membrane or gum, and then a local anesthetic is administered by pressing the back of the microneedle portion.
- the microneedle array and microneedle patch of the present invention use a water-soluble polymer as a base, so that they can be dissolved rapidly in a high humidity environment and can efficiently deliver an anesthetic agent in the oral mucosa or gum.
- the effect of local anesthesia can be exhibited in a short time (within 1 to 10 minutes).
- the preparation is applied to the gum of a volunteer and peeled off after 5 to 10 minutes, and then it can be confirmed by a test of whether or not it feels pain by sticking a toothpick or an injection needle to the application site.
- the toothpick or injection needle it is possible to prevent the toothpick or injection needle from getting deeper than 1 mm in the gum even if it is strongly pushed by putting a rubber ring as a stopper at a position of 1 mm from the tip of the toothpick or injection needle.
- the amount of the local anesthetic contained in the microneedle array per unit area and the size of the microneedle array it can be used as a dental local anesthetic preparation. It can also be used as a pre-anesthetic for reducing pain at the administration site prior to administration of a dental local anesthetic injection solution.
- the microneedle array and the microneedle patch of the present invention are applied to the oral mucosa or gums, it is possible to continuously apply a dental local anesthetic injection to the application site.
- Example 1 Manufacture of microneedle patch containing local anesthetic 50 parts by mass of lidocaine hydrochloride (purchased from Wiken Pharmaceutical Co., Ltd.) and 50 parts by mass of sodium hyaluronate (FCH-SU, Kikkoman) were weighed, and water was added to prepare a solution having a solid content of 10% by mass. The aqueous solution was poured into a mold having a needle length of 200 ⁇ m, dried at room temperature for 24 hours, and demolded to produce a microneedle array. A perforated polyethylene (PE) adhesive film was then adhered to the back of the array.
- PE polyethylene
- the preparation was applied to the gums of five volunteers and peeled off after 5 minutes, and a toothpick was pierced at the application site to test whether pain was felt or not. All were able to confirm the anesthetic effect without feeling pain.
- Benzocaine ethyl aminobenzoate
- the microneedle arrays molded in Examples 4 to 9 were subjected to a compression test using a small desktop tester EZ Test EZSX (manufactured by Shimadzu Corporation) to measure the mechanical strength of the needle.
- the microneedle array was formed into a diameter of 1 cm, fixed between two stainless steel plates, and compressed at a speed of 1 mm / min to obtain a stress / strain curve. From the stress-strain curves, elastic coefficients were obtained and compared as evaluation criteria for mechanical strength of the needle.
- the elastic modulus was calculated from a linear gradient at a strain of 0.1 to 0.2 mm, which is an initial steady state in a stress-strain curve consisting of stress on the vertical axis and strain on the horizontal axis. The results are shown in Table 1.
- microneedle preparations of Examples 4 to 9 were all able to exert an anesthetic effect on all volunteers within 10 minutes.
- the sheet preparation and the gel ointment were difficult to exert an anesthetic effect within 10 minutes.
- microneedle patch 12 microneedle patch 13 microneedle patch
Landscapes
- Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Chemical & Material Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Medicinal Chemistry (AREA)
- Anesthesiology (AREA)
- Dermatology (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Inorganic Chemistry (AREA)
- Medical Informatics (AREA)
- Nutrition Science (AREA)
- Physiology (AREA)
- Emergency Medicine (AREA)
- Organic Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Preparation (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
歯科用市販局所麻酔剤は数多く使用されている。それらは局所麻酔剤含有液剤、ゲル剤、ゼリー剤、などが主であり、液剤は脱脂綿などに浸して口腔内に適用する。ゲル剤、ゼリー剤はそのまま口腔内に適用する。いずれも、粘膜からの麻酔薬の吸収が遅いため効果が発生するまでの時間が長く、患者が横になって待つ時間が長いことや粘膜吸収のばらつきが生じることにより、QOLを損なうことが多い。また、麻酔薬が適用局所から流れて口腔内の広い部分が麻酔されることも、これらの局所表面麻酔剤の欠点である。麻酔薬の注射は、麻酔薬を注射される時点で痛みを感じて治療前に恐怖心が高まり、このことが歯科治療を敬遠する原因のひとつとなっている。
〔1〕 局所麻酔剤を含有するマイクロニードルアレイからなり、口腔粘膜又は歯茎に貼付することによりニードル部が粘膜内溶解する即効性歯科局所麻酔製剤。
〔2〕 マイクロニードルアレイの背面に疎水性または非溶解フィルムを裏打ちしている、〔1〕に記載の歯科局所麻酔製剤。
〔3〕 水溶性高分子を基剤とし、マイクロニードルアレイは柔軟な基板を有し、該基板の厚さが100μm以下である、〔1〕又は〔2〕に記載の歯科局所麻酔製剤。
〔4〕 水溶性高分子がヒアルロン酸及びその誘導体、コラーゲン、プロテオグリカン、ヒドロキシプロピルセルロース、コンドロイチン硫酸、カルボキシメチルセルロース、ポリビニルピロリドン、ポリエチレングリコール、並びにデキストランからなる群より選ばれる1種または2種以上である、〔3〕に記載の歯科局所麻酔製剤。
〔5〕 マイクロニードルアレイの基剤が水溶性高分子以外に水溶性低分子化合物を2質量%以上含有する、〔3〕又は〔4〕に記載の歯科局所麻酔製剤。
〔6〕 局所麻酔剤がプロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる、〔1〕~〔5〕のいずれかに記載の歯科局所麻酔製剤。
〔7〕 局所麻酔剤がアミノ安息香酸エチルである、〔1〕~〔5〕のいずれかに記載の歯科局所麻酔製剤。
〔8〕 局所麻酔剤がプロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる1又は複数とアミノ安息香酸エチルとの混合物である、〔1〕~〔5〕のいずれかに記載の歯科局所麻酔製剤。
〔9〕 局所麻酔剤の基剤中の濃度が1質量%以上80質量%以下である、〔1〕~〔8〕のいずれかに記載の歯科局所麻酔製剤。
〔10〕 局所麻酔剤がリドカイン又はその塩である、〔1〕~〔6〕、〔8〕、〔9〕のいずれかに記載の歯科局所麻酔製剤。
〔11〕 水溶性高分子を基剤とし、局所麻酔剤を含有するマイクロニードルアレイであって、マイクロニードルの高さは50μm以上300μm以下であり、マイクロニードルの先端は直径1μm以上50μm以下の円形又はそれと同面積を有する平面であり、マイクロニードルアレイの基板の厚さは5μm以上100μm以下であるマイクロニードルアレイ。
〔12〕 水溶性高分子がヒアルロン酸及びその誘導体、コラーゲン、プロテオグリカン、ヒドロキシプロピルセルロース、コンドロイチン硫酸、カルボキシメチルセルロース、ポリビニルピロリドン、ポリエチレングリコール、並びにデキストランからなる群より選ばれる1種または2種以上である、〔11〕に記載のマイクロニードルアレイ。
〔13〕 基剤が水溶性高分子以外に水溶性低分子化合物を2質量%以上含有する、〔11〕又は〔12〕に記載のマイクロニードルアレイ。
〔14〕 局所麻酔剤がプロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる、〔11〕~〔13〕のいずれかに記載のマイクロニードルアレイ。
〔15〕 局所麻酔剤がアミノ安息香酸エチルである、〔11〕~〔13〕のいずれか記載のマイクロニードルアレイ。
〔16〕 局所麻酔剤がプロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる1又は複数とアミノ安息香酸エチルとの混合物である、〔11〕~〔13〕のいずれかに記載のマイクロニードルアレイ。
〔17〕 局所麻酔剤の基剤中の濃度が1質量%以上80質量%以下である、〔11〕~〔16〕のいずれかに記載のマイクロニードルアレイ。
〔18〕 局所麻酔剤がリドカイン又はその塩である、〔11〕~〔14〕、〔16〕、〔17〕のいずれかに記載のマイクロニードルアレイ。
〔19〕 〔11〕~〔18〕のいずれかに記載のマイクロニードルアレイと、該マイクロニードルアレイの背面に備えられた支持体とからなるマイクロニードルパッチ。
〔20〕 支持体が口腔内粘着性を有する、〔19〕に記載のマイクロニードルパッチ。
〔21〕 支持体に粘着性物質がコーティングされている、〔20〕に記載のマイクロニードルパッチ。
〔22〕 支持体が水溶性である、〔20〕に記載のマイクロニードルパッチ。
〔23〕 支持体がフィルム状であり、一部にフィルムを含まない欠損部分を有する、〔19〕~〔22〕のいずれかに記載のマイクロニードルパッチ。
〔24〕 支持体が滅菌紙であり、マイクロニードルアレイを内包する外枠を形成している、〔19〕~〔22〕のいずれかに記載のマイクロニードルパッチ。
本発明のマイクロニードルアレイ及びマイクロニードルパッチは、水溶性高分子を基剤として用いているので、高湿度環境下で口腔粘膜又は歯茎の屈曲に追随して密着し易く、口腔内の局所投与に適している。
本発明のマイクロニードルアレイ及びマイクロニードルパッチは、歯科用局所麻酔製剤として、さらには、歯科用局所麻酔注射液を投与する前に、投与部位の痛みを軽減するためのプレ麻酔薬としても使用可能である。
マイクロニードルアレイの基剤は、水溶性高分子である。このような素材を用い均一に局所麻酔剤を含有するマイクロニードルアレイを常法により作製すると、局所麻酔剤はマイクロニードル部のみならず基板部にも含まれることとなる。このマイクロニードルアレイを口腔内(口腔粘膜又は歯茎等)に適用すると、マイクロニードル部は粘膜内又は歯茎内に到達することができ、それにより、マイクロニードル部が粘膜内溶解し、含まれる局所麻酔剤の目的部位への送達を促進する。マイクロニードルアレイの基板も、口腔内の高湿度環境下で口腔粘膜又は歯茎の屈曲に追随して密着し、基板の水溶性高分子が溶解し、そこに存在する局所麻酔剤もまた、目的部位へ送達される。
薬物結晶化防止のため、ポリビニルピロリドン(PVP)、デキストランの添加もよい。
水溶性低分子化合物の添加量は、基剤中の濃度として2質量%以上50質量%以下であり、好ましくは2質量%以上35質量%以下であり、より好ましくは 2質量%以上30質量%以下である。
マイクロニードルの高さは、50μm以上300μm以下であることが望ましく、100μm以上250μm以下がより好ましい。50μm未満では、局所麻酔剤の送達に不利である。300μmを超えると、適用時に痛みや出血を伴うことがある。
本発明のマイクロニードルアレイに含まれる有効成分は、局所麻酔剤である。局所麻酔剤としては、プロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン又はそれらの塩が挙げられる。あるいは、局所麻酔剤は、アミノ安息香酸エチル(ベンゾカイン)であってもよい。
本発明においては、これらの局所麻酔剤を2種以上混合して使用することができる。好ましい組み合わせとしては、プロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる1又は複数とアミノ安息香酸エチルとの組み合わせ(混合物)である。
局所麻酔剤を単独で用いる場合、リドカイン又はその塩が好ましく、リドカインの塩としては、リドカイン塩酸塩が好ましい。
本発明のマイクロニードルパッチは、前記マイクロニードルアレイと、該マイクロニードルアレイの背面に備えられた支持体とからなる。ここで、マイクロニードルアレイの背面とは、マイクロニードルが突出している面とは反対側の基板部である。支持体は必須ではないが、支持体があれば扱いやすく、貼付部位から滑る又は口唇の内側に移ることを防止することができる。マイクロニードルアレイの背面に疎水性または非溶解フィルムを支持体として裏打ちしたマイクロニードルパッチは、歯科局所麻酔製剤の一実施形態である。この歯科局所麻酔製剤は即効性を有する即効性歯科局所麻酔製剤である。
1.上記マイクロニードルアレイの製造方法によって製造された乾燥したマイクロニードルアレイの背面に、支持体として高分子フィルムが裏打ちされたマイクロニードルパッチ。その製法は種々ある。例えば、マイクロニードルアレイを乾燥させ、型から剥離する前にその背面に水もしくは低沸点有機溶媒に溶解させた高分子を塗布、スプレー等により積層し、乾燥させる。ここで高分子とは、ポリビニルアルコール、高分子量のポリビニルピロリドン、ヒドロキシプロピルセルロース、ポリアクリル酸、のような水溶性高分子であって、口腔内で瞬時に溶解しない高分子である。より具体的には、支持体として高分子フィルムが裏打ちされていることによって、少なくとも貼付後30分以内、マイクロニードル基板が溶解しない、形状が崩れないことが必要である。支持体としては、ポリ酢酸ビニル、ポリ塩化ビニル、ナイロン、等の有機溶媒可溶な高分子あるいはそれらを可塑剤により柔軟にしたものであっても良い。これらは、疎水性または非溶解フィルムの好適な具体例である。
2.上記マイクロニードルアレイの製造方法によって製造された乾燥したマイクロニードルアレイの背面に、高分子フィルムが支持体として裏打ちされたマイクロニードルパッチ。本製剤は、高分子フィルムとマイクロニードルアレイの背面に接着剤もしくは粘着剤により一体化されている。マイクロニードルアレイと高分子フィルムとのサイズは同等でもよく、また高分子フィルムがより大きくフィルム面に口腔内接着性を有するような処理をしてもよい。高分子フィルムは多孔性あるいは織り布、のような水透過性であっても良い。典型的には、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート、エチレン酢酸ビニルコポリマー(EVA)等のプラスチックシート又はフィルム;滅菌紙、セロハン、不織布、織布等の紙シート、スプレーまたは塗布によるシリコン樹脂薄膜、スプレーまたは塗布によるフッ素オイル薄膜、等が挙げられる。
背面に積層するフィルムは、それがないとマイクロニードルアレイの背面が貼付部粘膜の反対側の口腔粘膜に付着しがちであるが故に有効ではある。しかしながら、それは本発明の必須要件ではなく、本発明の必須要件はマイクロニードルによる粘膜深部への薬物送達である。マイクロニードル基剤が水溶性であるがその水溶解速度が遅い場合、マイクロニードル部での薬物溶解が遙かに背面に比べて早いので、裏打ち剤がなくても目的にはかなう。すなわち、本発明のマイクロニードルアレイそのものが歯科局所麻酔製剤として提供される。
単位面積当たりのマイクロニードルアレイに含まれる局所麻酔剤の量及びマイクロニードルアレイの大きさを適宜設定することで、歯科用局所麻酔製剤として使用することができる。また、歯科用局所麻酔注射液を投与する前に、投与部位の痛みを軽減するためのプレ麻酔薬としても使用可能である。この場合、本発明のマイクロニードルアレイ及びマイクロニードルパッチを口腔粘膜又は歯茎に貼付した後、続けて、貼付部位に歯科用局所麻酔注射を施すことができる。
(局所麻酔剤含有マイクロニードルパッチの製造)
塩酸リドカインを50質量部(和研薬(株)より購入)、ヒアルロン酸ナトリウム50質量部(FCH-SU、キッコーマン)を計り、水を加えて10質量%固形分になる溶液を調製した。その水溶液を針長さ200μmの鋳型に流して、室温において24時間乾燥し、型抜きし、マイクロニードルアレイを製造した。その後、アレイの背面に穴空きポリエチレン(PE)粘着フィルムを接着させた。
アミノ安息香酸エチル(和研薬(株)より購入)をエタノールにて溶解し、10質量%のヒドロキシプロピルセルロースとPEG1000(日本バルク薬品(株))(HPCL:PEG1000=10:0.5)の混合水溶液に混合し、鋳型に充填後乾燥させた。マイクロニードルパッチ中アミノ安息香酸エチル含量は、20質量%であった。鋳型から剥離前にポリ酢酸ビニルの10質量%酢酸エチル溶液を塗布し60℃で20分乾燥後、短径1cm、長径2cmの楕円形に打ち抜き、支持体付きマイクロニードル製剤を得た(支持体厚さ=40μm、マイクロニードル基板厚さ=50μm)。
本製剤をボランティア5名の歯茎に貼付し5分後に剥離して、爪楊枝を貼付部位に刺して痛みを感じるか否かの試験をした。全員が痛みを感じず麻酔効果を確認できた。
下記の薬物含有マイクロニードルパッチを実施例2と同様にして作製した。
べンゾカイン(アミノ安息香酸エチル) 25質量%
テトラカイン塩酸塩 1質量%
ジブカイン塩酸塩 1質量%
ホモスルファミン 2質量%
鋳型から剥離前にポリビニルアルコールの30質量%水溶液を塗布し、60℃で20分乾燥後、短径1cm、長径2cmの楕円形に打ち抜き、支持体付きマイクロニードル製剤を得た(支持体厚さ=30μm、マイクロニードル基板厚さ=50μm)。
本製剤をボランティア5名の歯茎に貼付し5分後に剥離して、爪楊枝を貼付部位に刺して痛みを感じるか否かの試験をした。全員が痛みを感じず麻酔効果を確認できた。
表1に記載の基剤及び麻酔剤を含むマイクロニードル製剤を、実施例2に記載の方法に準じて製造した(実施例4~9)。但し、実施例6のマイクロニードル製剤は支持体なしであった(基板の厚さは100μm)。実施例4、5、7~9のマイクロニードル製剤は、それぞれ、表1に記載の裏打ち剤を用いて、支持体付きマイクロニードル製剤であった(マイクロニードル基板厚さ=40~50μm、支持体厚さ=40~60μm)。
比較例として、マイクロニードルの針なしシート製剤(比較例1)及びゲル軟膏(比較例2)の製剤を表1の組成に基づいて製造した。
実施例4~9で成型したマイクロニードルアレイについて、小型卓上試験機EZ Test EZSX(島津製作所製)を用い、圧縮試験を行ってニードルの機械的強度を測定した。マイクロニードルアレイを直径1cmに成形し2枚のステンレス板の間に固定し、これを1mm/minの速度で圧縮して応力・歪み曲線を得た。
応力・歪み曲線より、ニードルの機械的強度の評価基準として弾性係数を求めて比較した。弾性係数の算出は、縦軸に応力、横軸に歪みから成る応力・歪み曲線における初期定常状態である、歪みが0.1~0.2mmにおける直線勾配から求めた。結果を表1に示す。
実施例4~9及び比較例1、2で製造した製剤をボランティア5名の歯茎に貼付し、5~10分後に剥離して爪楊枝を貼付部位に刺して痛みを感じるか否かの試験をした。麻酔評価の基準は以下の通りであった。結果を表1に示す。
全員が痛みを感じない:効果良好
3~4名が痛みを感じない:効果あり
0~2名が痛みを感じない:効果不良
2 粘着無しのポリエチレンフィルム
3 マイクロニードル部
4 滅菌紙
5 マイクロニードル部
6 ポリエチレン粘着フィルム
7 マイクロニードル部
11 マイクロニードルパッチ
12 マイクロニードルパッチ
13 マイクロニードルパッチ
Claims (24)
- 局所麻酔剤を含有するマイクロニードルアレイからなり、口腔粘膜又は歯茎に貼付することによりニードル部が粘膜内溶解する即効性歯科局所麻酔製剤。
- マイクロニードルアレイの背面に疎水性または非溶解フィルムを裏打ちしている、請求項1に記載の歯科局所麻酔製剤。
- 水溶性高分子を基剤とし、マイクロニードルアレイは柔軟な基板を有し、該基板の厚さが100μm以下である、請求項1又は2に記載の歯科局所麻酔製剤。
- 水溶性高分子がヒアルロン酸及びその誘導体、コラーゲン、プロテオグリカン、ヒドロキシプロピルセルロース、コンドロイチン硫酸、カルボキシメチルセルロース、ポリビニルピロリドン、ポリエチレングリコール、並びにデキストランからなる群より選ばれる1種または2種以上である、請求項3に記載の歯科局所麻酔製剤。
- マイクロニードルアレイの基剤が水溶性高分子以外に水溶性低分子化合物を2質量%以上含有する、請求項3又は4に記載の歯科局所麻酔製剤。
- 局所麻酔剤がプロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる、請求項1~5のいずれか1項に記載の歯科局所麻酔製剤。
- 局所麻酔剤がアミノ安息香酸エチルである、請求項1~5のいずれか1項に記載の歯科局所麻酔製剤。
- 局所麻酔剤がプロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる1又は複数とアミノ安息香酸エチルとの混合物である、請求項1~5のいずれか1項に記載の歯科局所麻酔製剤。
- 局所麻酔剤の基剤中の濃度が1質量%以上80質量%以下である、請求項1~8のいずれか1項に記載の歯科局所麻酔製剤。
- 局所麻酔剤がリドカイン又はその塩である、請求項1~6、8、9のいずれか1項に記載の歯科局所麻酔製剤。
- 水溶性高分子を基剤とし、局所麻酔剤を含有するマイクロニードルアレイであって、マイクロニードルの高さは50μm以上300μm以下であり、マイクロニードルの先端は直径1μm以上50μm以下の円形又はそれと同面積を有する平面であり、マイクロニードルアレイの基板の厚さは5μm以上100μm以下であるマイクロニードルアレイ。
- 水溶性高分子がヒアルロン酸及びその誘導体、コラーゲン、プロテオグリカン、ヒドロキシプロピルセルロース、コンドロイチン硫酸、カルボキシメチルセルロース、ポリビニルピロリドン、ポリエチレングリコール、並びにデキストランからなる群より選ばれる1種または2種以上である、請求項11に記載のマイクロニードルアレイ。
- 基剤が水溶性高分子以外に水溶性低分子化合物を2質量%以上含有する、請求項11又は12に記載のマイクロニードルアレイ。
- 局所麻酔剤がプロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる、請求項11~13のいずれか1項に記載のマイクロニードルアレイ。
- 局所麻酔剤がアミノ安息香酸エチルである、請求項11~13のいずれか1項に記載のマイクロニードルアレイ。
- 局所麻酔剤がプロカイン、テトラカイン、リドカイン、ジブカイン、ブピバカイン及びそれらの塩からなる群より選ばれる1又は複数とアミノ安息香酸エチルとの混合物である、請求項11~13のいずれか1項に記載のマイクロニードルアレイ。
- 局所麻酔剤の基剤中の濃度が1質量%以上80質量%以下である、請求項11~16のいずれか1項に記載のマイクロニードルアレイ。
- 局所麻酔剤がリドカイン又はその塩である、請求項11~14、16、17のいずれか1項に記載のマイクロニードルアレイ。
- 請求項11~18のいずれか1項に記載のマイクロニードルアレイと、該マイクロニードルアレイの背面に備えられた支持体とからなるマイクロニードルパッチ。
- 支持体が口腔内粘着性を有する、請求項19に記載のマイクロニードルパッチ。
- 支持体に粘着性物質がコーティングされている、請求項20に記載のマイクロニードルパッチ。
- 支持体が水溶性である、請求項20に記載のマイクロニードルパッチ。
- 支持体がフィルム状であり、一部にフィルムを含まない欠損部分を有する、請求項19~22のいずれか1項に記載のマイクロニードルパッチ。
- 支持体が滅菌紙であり、マイクロニードルアレイを内包する外枠を形成している、請求項19~22のいずれか1項に記載のマイクロニードルパッチ。
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018360546A AU2018360546B2 (en) | 2017-11-02 | 2018-11-01 | Dental local anesthetic microneedle array |
| CN202210877331.8A CN115252593B (zh) | 2017-11-02 | 2018-11-01 | 齿科用局部麻醉微针阵列 |
| CA3067660A CA3067660C (en) | 2017-11-02 | 2018-11-01 | Dental local anesthetic microneedle array |
| US16/623,748 US20200170940A1 (en) | 2017-11-02 | 2018-11-01 | Dental local anesthetic microneedle array |
| KR1020197036710A KR102380428B1 (ko) | 2017-11-02 | 2018-11-01 | 치과용 국소 마취 마이크로니들 어레이 |
| EP18873082.4A EP3705155A4 (en) | 2017-11-02 | 2018-11-01 | LOCAL DENTAL ANESTHESIA MICRO-NEEDLE NETWORK |
| CN201880040871.2A CN110799238B (zh) | 2017-11-02 | 2018-11-01 | 齿科用局部麻醉微针阵列 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-213296 | 2017-11-02 | ||
| JP2017213296 | 2017-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019088227A1 true WO2019088227A1 (ja) | 2019-05-09 |
Family
ID=66331922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2018/040719 Ceased WO2019088227A1 (ja) | 2017-11-02 | 2018-11-01 | 歯科用局所麻酔マイクロニードルアレイ |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20200170940A1 (ja) |
| EP (1) | EP3705155A4 (ja) |
| JP (1) | JP6671616B2 (ja) |
| KR (1) | KR102380428B1 (ja) |
| CN (2) | CN110799238B (ja) |
| AU (1) | AU2018360546B2 (ja) |
| CA (1) | CA3067660C (ja) |
| WO (1) | WO2019088227A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023094637A1 (de) * | 2021-11-25 | 2023-06-01 | Lts Lohmann Therapie-Systeme Ag | Orales micronadel patch |
| EP4436546A1 (de) * | 2021-11-25 | 2024-10-02 | LTS Lohmann Therapie-Systeme AG | Applikationshilfe für oralen dünnfilm |
| WO2025053184A1 (ja) * | 2023-09-04 | 2025-03-13 | コスメディ製薬株式会社 | 口腔内局所適用システム |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023523952A (ja) | 2020-04-28 | 2023-06-08 | ティコナ・エルエルシー | マイクロニードルアセンブリ |
| CN111991344B (zh) * | 2020-09-28 | 2023-01-13 | 四川大学 | 一种适用于局部麻醉的微针贴片及其制备方法 |
| WO2022215693A1 (ja) * | 2021-04-05 | 2022-10-13 | コスメディ製薬株式会社 | 歯科用局所麻酔マイクロニードルアレイ |
| WO2023214751A1 (ko) * | 2022-05-02 | 2023-11-09 | 연세대학교 산학협력단 | 국소 마취용 용해성 마이크로 니들 및 이를 포함하는 국소 마취용 패치 |
| KR20250004809A (ko) | 2022-09-08 | 2025-01-08 | 코스메드 파마소티컬 씨오 쩜 엘티디 | 국소 적용 시스템 |
| KR102853223B1 (ko) | 2023-01-30 | 2025-08-29 | 선문대학교 산학협력단 | 치과 치료를 위한 국소 마취용 마이크로 니들 패치 |
| KR20240150287A (ko) * | 2023-04-07 | 2024-10-15 | 연세대학교 산학협력단 | 점막 면역을 위한 설하 용해성 마이크로니들 어레이 및 이의 제조방법 |
| KR102853389B1 (ko) * | 2023-04-12 | 2025-09-01 | 연세대학교 산학협력단 | 마이크로니들 어플리케이터 |
| KR102853390B1 (ko) * | 2023-04-12 | 2025-09-01 | 연세대학교 산학협력단 | 마이크로니들 패키지 및 이를 구비하는 마이크로니들 어플리케이터 |
| CN116637173B (zh) * | 2023-05-11 | 2024-03-22 | 南京医科大学附属口腔医院 | 一种多胍抗菌肽口腔微针 |
| KR20260025403A (ko) | 2024-07-09 | 2026-02-24 | 코스메드 파마소티컬 씨오 쩜 엘티디 | 약물 피부 침투성이 개량된 경피 흡수 제제 |
| CN121154518A (zh) * | 2025-09-26 | 2025-12-19 | 中国医学科学院北京协和医院 | 一种结合近红外光热效应与微针技术的快速表面麻醉贴片及其制备方法与应用 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013032324A (ja) * | 2011-08-03 | 2013-02-14 | Bioserentack Co Ltd | 局所麻酔薬を含有する即効性のマイクロニードル・アレイ・パッチ製剤 |
| JP2015515474A (ja) | 2012-04-03 | 2015-05-28 | セラジェクト, インコーポレイテッド | ワクチンの経頬送達のための溶解性微小針アレイ |
| WO2017018086A1 (ja) * | 2015-07-29 | 2017-02-02 | 日本写真印刷株式会社 | マイクロニードルシート |
| JP2017507734A (ja) | 2014-03-10 | 2017-03-23 | スリーエム イノベイティブ プロパティズ カンパニー | マイクロニードルデバイス |
| JP2017061447A (ja) | 2015-09-21 | 2017-03-30 | ビーアンドエル バイオテック インコーポレイティッド | 歯茎の屈曲に合うように柔軟な、歯科用物質伝達のためのマイクロニードルおよびその製作方法 |
| JP2017095427A (ja) * | 2015-11-27 | 2017-06-01 | ライオン株式会社 | 溶解型マイクロニードル製剤 |
| JP2017164191A (ja) * | 2016-03-15 | 2017-09-21 | 凸版印刷株式会社 | 経皮投与デバイス |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3964482A (en) * | 1971-05-17 | 1976-06-22 | Alza Corporation | Drug delivery device |
| US5288498A (en) * | 1985-05-01 | 1994-02-22 | University Of Utah Research Foundation | Compositions of oral nondissolvable matrixes for transmucosal administration of medicaments |
| JPH09268123A (ja) * | 1996-03-30 | 1997-10-14 | Nichiban Co Ltd | 局所麻酔用貼付剤 |
| US7588705B2 (en) * | 2004-12-28 | 2009-09-15 | Nabtesco Corporation | Skin needle manufacturing apparatus and skin needle manufacturing method |
| KR20080066712A (ko) * | 2005-09-30 | 2008-07-16 | 티티아이 엘뷰 가부시키가이샤 | 관능화된 미세바늘 경피 약물 전달 시스템, 장치 및 방법 |
| US20090182306A1 (en) * | 2006-07-21 | 2009-07-16 | Georgia Tech Research Corporation | Microneedle Devices and Methods of Drug Delivery or Fluid Withdrawal |
| US9993423B2 (en) * | 2011-10-20 | 2018-06-12 | Cosmed Pharmaceutical Co., Ltd. | Microneedle deposition method |
| AU2012328448B2 (en) * | 2011-10-28 | 2017-02-02 | Sung-Yun Kwon | Dissolving solid solution perforator patch for migraine treatment |
| JP2013095687A (ja) * | 2011-10-31 | 2013-05-20 | Tsukioka Film Pharma Co Ltd | 口腔内貼付薬 |
| ES2743733T3 (es) * | 2012-06-15 | 2020-02-20 | Univ Washington Through Its Center For Commercialization | Dispositivos de cierre de heridas basados en microestructuras |
| CN105188569B (zh) * | 2013-03-15 | 2020-11-20 | 考里安公司 | 用于递送活性剂的微结构阵列 |
| WO2015147040A1 (ja) * | 2014-03-26 | 2015-10-01 | コスメディ製薬株式会社 | 角質層に留まるマイクロニードル |
| JP6369992B2 (ja) * | 2015-03-19 | 2018-08-08 | ライオン株式会社 | 溶解型マイクロニードル製剤 |
| KR102099326B1 (ko) * | 2015-04-13 | 2020-04-09 | 주식회사 엘지생활건강 | 폴리페놀 전달용 용해성 마이크로니들 |
| WO2017180086A1 (en) * | 2016-04-11 | 2017-10-19 | Pop Test Oncology Limited Liability Company | System and method for diagnosis and treatment |
| US20170028184A1 (en) * | 2015-07-27 | 2017-02-02 | Catura Corporation | Device and method of skin care and treatment via microneedles having inherent anode and cathode properties, with or without cosmetic or pharmacological compositions |
-
2018
- 2018-10-31 JP JP2018206071A patent/JP6671616B2/ja active Active
- 2018-11-01 CN CN201880040871.2A patent/CN110799238B/zh active Active
- 2018-11-01 CA CA3067660A patent/CA3067660C/en active Active
- 2018-11-01 EP EP18873082.4A patent/EP3705155A4/en not_active Withdrawn
- 2018-11-01 KR KR1020197036710A patent/KR102380428B1/ko active Active
- 2018-11-01 CN CN202210877331.8A patent/CN115252593B/zh active Active
- 2018-11-01 WO PCT/JP2018/040719 patent/WO2019088227A1/ja not_active Ceased
- 2018-11-01 AU AU2018360546A patent/AU2018360546B2/en not_active Ceased
- 2018-11-01 US US16/623,748 patent/US20200170940A1/en not_active Abandoned
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013032324A (ja) * | 2011-08-03 | 2013-02-14 | Bioserentack Co Ltd | 局所麻酔薬を含有する即効性のマイクロニードル・アレイ・パッチ製剤 |
| JP2015515474A (ja) | 2012-04-03 | 2015-05-28 | セラジェクト, インコーポレイテッド | ワクチンの経頬送達のための溶解性微小針アレイ |
| JP2017507734A (ja) | 2014-03-10 | 2017-03-23 | スリーエム イノベイティブ プロパティズ カンパニー | マイクロニードルデバイス |
| WO2017018086A1 (ja) * | 2015-07-29 | 2017-02-02 | 日本写真印刷株式会社 | マイクロニードルシート |
| JP2017061447A (ja) | 2015-09-21 | 2017-03-30 | ビーアンドエル バイオテック インコーポレイティッド | 歯茎の屈曲に合うように柔軟な、歯科用物質伝達のためのマイクロニードルおよびその製作方法 |
| JP2017095427A (ja) * | 2015-11-27 | 2017-06-01 | ライオン株式会社 | 溶解型マイクロニードル製剤 |
| JP2017164191A (ja) * | 2016-03-15 | 2017-09-21 | 凸版印刷株式会社 | 経皮投与デバイス |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3705155A4 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023094637A1 (de) * | 2021-11-25 | 2023-06-01 | Lts Lohmann Therapie-Systeme Ag | Orales micronadel patch |
| EP4436546A1 (de) * | 2021-11-25 | 2024-10-02 | LTS Lohmann Therapie-Systeme AG | Applikationshilfe für oralen dünnfilm |
| EP4436546B1 (de) * | 2021-11-25 | 2026-01-21 | LTS Lohmann Therapie-Systeme AG | Applikationshilfe für oralen dünnfilm |
| WO2025053184A1 (ja) * | 2023-09-04 | 2025-03-13 | コスメディ製薬株式会社 | 口腔内局所適用システム |
Also Published As
| Publication number | Publication date |
|---|---|
| US20200170940A1 (en) | 2020-06-04 |
| CN110799238A (zh) | 2020-02-14 |
| EP3705155A1 (en) | 2020-09-09 |
| KR20200007017A (ko) | 2020-01-21 |
| AU2018360546A1 (en) | 2020-01-16 |
| AU2018360546B2 (en) | 2021-03-25 |
| KR102380428B1 (ko) | 2022-03-31 |
| JP2019084352A (ja) | 2019-06-06 |
| EP3705155A4 (en) | 2021-11-17 |
| CA3067660C (en) | 2022-11-15 |
| CN115252593B (zh) | 2024-08-30 |
| JP6671616B2 (ja) | 2020-03-25 |
| CN115252593A (zh) | 2022-11-01 |
| CN110799238B (zh) | 2022-08-05 |
| CA3067660A1 (en) | 2019-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6671616B2 (ja) | 歯科用局所麻酔マイクロニードルアレイ | |
| JP6231633B2 (ja) | 歯茎の屈曲に合うように柔軟な、歯科用物質伝達のためのマイクロニードルおよびその製作方法 | |
| CN111991344B (zh) | 一种适用于局部麻醉的微针贴片及其制备方法 | |
| EP1079813B1 (en) | Pharmaceutical carrier device suitable for delivery of pharmaceutical compounds to mucosal surfaces | |
| US7579019B2 (en) | Pharmaceutical carrier device suitable for delivery of pharmaceutical compounds to mucosal surfaces | |
| US20200237654A1 (en) | Microstructure array, methods of making, and methods of use | |
| KR20040039290A (ko) | 약물 및 다른 활성 화합물의 제어 투여를 위한 점막접착성침식성 약물 송달 장치 | |
| TWI243688B (en) | Intraoral adhesive preparation | |
| CN113827544B (zh) | 一种耐热型可植入式聚合物微针及其制备方法和应用 | |
| KR20220118019A (ko) | 경피 약물 전달을 위한 마이크로니들 패치 시스템 | |
| WO2022215693A1 (ja) | 歯科用局所麻酔マイクロニードルアレイ | |
| ES2397152T3 (es) | Forma de administración basada en polímeros hidrófilos reticulados | |
| WO2025053184A1 (ja) | 口腔内局所適用システム | |
| EP4585224A1 (en) | Local application system | |
| KR102957474B1 (ko) | 국소 마취용 용해성 마이크로 니들 및 이를 포함하는 국소 마취용 패치 | |
| KR20170032810A (ko) | A형 간염 예방 접종을 위한 용해성 미세바늘 패치 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18873082 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 20197036710 Country of ref document: KR Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 3067660 Country of ref document: CA |
|
| ENP | Entry into the national phase |
Ref document number: 2018360546 Country of ref document: AU Date of ref document: 20181101 Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2018873082 Country of ref document: EP Effective date: 20200602 |
