WO2019103268A1 - 니들 팁에 코팅부를 보유하는 마이크로니들을 제조하는 방법 및 장치 - Google Patents
니들 팁에 코팅부를 보유하는 마이크로니들을 제조하는 방법 및 장치 Download PDFInfo
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- WO2019103268A1 WO2019103268A1 PCT/KR2018/007658 KR2018007658W WO2019103268A1 WO 2019103268 A1 WO2019103268 A1 WO 2019103268A1 KR 2018007658 W KR2018007658 W KR 2018007658W WO 2019103268 A1 WO2019103268 A1 WO 2019103268A1
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- mold
- microneedle
- layer
- needle
- coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
- B29C33/3857—Manufacturing moulds, e.g. shaping the mould surface by machining by making impressions of one or more parts of models, e.g. shaped articles and including possible subsequent assembly of the parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/026—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles characterised by the shape of the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C41/22—Making multilayered or multicoloured articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/38—Moulds, cores or other substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
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- 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
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C2033/0094—Means for masking a part of the moulding surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C2045/0079—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping applying a coating or covering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2909/00—Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
- B29K2909/02—Ceramics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0059—Degradable
- B29K2995/0062—Degradable water-soluble
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7544—Injection needles, syringes
Definitions
- the present invention relates to a method of manufacturing a microneedle holding a coating on a needle tip and an apparatus for use therein. More particularly, the present invention relates to a method of manufacturing a microneedle such that a coating portion in which a target material is impregnated is formed only on a needle tip, and a microneedle mold that can be used in the method.
- micro needle micro pile, micro missile capsule, etc.
- a micro needle micro pile, micro missile capsule, etc.
- the microneedles may be made of metal or silicone, and may be made of a self-degrading material or a biodegradable material.
- the microneedle is characterized by the absence of pain and bleeding even when inserted into the skin, but it is very difficult to produce a micro needle which does not break or bend at the same time while retaining such characteristics.
- the fixed depth and immobilization time of the microneedles in the skin is a key factor that directly affects the skin permeability of the microneedles and the final skin supply of the target material, so the need for development of microneedles taking these factors into account .
- the micro needles are manually pressed and inserted into the skin, some of the micro needles are not inserted into the skin, and the target material is hardly transmitted.
- the material coated on the micro needle is not sufficiently dissolved, the target substance contained in the rear end of the micro needle is not supplied to the skin, but remains outside the skin, resulting in a problem that it is actually discarded.
- the present inventors have made efforts to provide a method for producing a micro needle capable of supplying effectively into the skin, which is present only in a tip to be inserted into the skin, and a device used therefor.
- the inventors of the present invention have completed the present invention by preparing a method of manufacturing a micro-needle coated with a tip that achieves high skin permeability as well as solving all of the above-mentioned problems, and an apparatus used therefor.
- Another object of the present invention is to provide a microneedle mold which can be used in the above manufacturing method.
- One aspect of the present invention is to (i) attach a masking film (second layer) having a hole formed on an upper portion of a mold structure (first layer) having a microneedle- Producing a mold; (ii) injecting the needle-forming polymer composition into the mold of the bilayer structure; (iii) curing the injected composition to form a microneedle structure; (iv) removing the first layer to expose the needle tip in the formed structure; (v) coating the exposed needle tip with a coating liquid; And (vi) removing the second layer.
- the present invention also provides a method for manufacturing a micro needle having a coating on a needle tip.
- the skin is the surface of the body in contact with the outer world, and the skin includes a cornea, an oral soft tissue, a gum, and a nasal mucosa.
- application to the skin means that the skin is adhered to the surface of the skin for transdermal administration, and is preferably inserted into the skin.
- the microneedle according to the present invention is divided into a front end portion and a rear end portion based on the application (insertion) direction to the skin, and the portion of the microneedle which contacts the skin at the time of skin application (insertion)
- the other end portion being referred to as a rear end portion, and the rear end portion being subjected to pressure.
- the 'tip' refers to a protruding part including the tip of the tip which is first brought into contact with the skin when the micro needle is applied to the skin, which means a skin insertion end, and the 'coating part' Means a portion where the material is coated or adhered.
- a micro-needle manufactured by using a fluid as a masking material and evaporating it after it is removed or cured is coated with a masking film and then coated with a needle tip, And the like.
- Such a conventional method has a disadvantage in that a process such as evaporation is required, or a masking layer and a needle are easily separated from each other in the process of covering a masking layer with an already formed needle, and the needle tip is damaged and the defect rate is very high.
- the inventors of the present invention prepared a micro-needle mold having a double-layer structure by previously bonding a masking film (second layer) to a conventional mold (first layer) (FIG. 1) By developing a process of injecting and curing the mold to form needles, removing the first layer, performing needle tip coating, and then removing the masking film (second layer), a micro- Thereby making it possible to provide a manufacturing method of needles.
- the microneedles are microstructured, it is not easy to precisely align the tips with the masking film after the needles are formed, and the sharp tip is liable to be damaged.
- the coating is performed and the masking layer is removed later. Thus, the separation of the masking layer does not occur, so that the needle tip can be more finely coated, and there is also an advantage in terms of the yield and time.
- the mold structure (first layer) having the microneedle-like minute pattern is composed of a single layer, and a previously manufactured microneedle mold may be used.
- Such a micro needle mold structure or a template may be manufactured by Micro Point Technology Inc. (https://micropoint-tech.com), which sells various kinds of molds such as a metal intaglio mold, a ceramic intaglio mold or a resin negative mold, (Blueacretechnlogy) or the like.
- the microneedle mold structure (first layer) may be formed by engraving a metal plate, a ceramic plate, or a resin substrate by a lithography method, or by using a photoresist material such as PDMS to perform soft lithography and photolithography Or a method of forming a micro-needle structure by a conventional method.
- the resin may be a thermoplastic resin; Based resin, a polyether sulfone-based resin, a polyetheretherketone (PEEK) -based resin, a PEI (polyetheretherketone) -based resin, an acrylic resin, an ABS resin, a nylon resin, a PLA resin, a polybenzimidazole resin, a polycarbonate resin, (Polyetherimide) resin, a polyethylene resin, a polyphenylene oxide resin, a polyphenylene sulfide resin, a polypropylene resin, a polystyrene resin, a polyvinyl chloride resin, a Teflon resin, Resin, polyurea / polyurethane hybrid resin, vulcanized rubber, phenol-formaldehyde, urea-formaldehyde, melamine resin, diallyl phthalate resin, epoxy resin, epoxy novolak resin, phenolic resin
- the masking film (second layer) having an upper hole formed therein one containing at least one selected from silicon, polyurethane, polyethylene, polyester, polypropylene and polyvinyl chloride may be used But is not necessarily limited thereto.
- the masking film is preferably a polymer film comprising a thermoplastic resin component and can be easily attached to the top of the mold structure (first layer) by applying a little heat energy, or can be adhered to the top of the mold structure (first layer)
- a hydrocolloid adhesive or the like may be used.
- the holes of the double-layer structure mold are pierced several times using microneedles so that no separation occurs in the hole portions It is also possible to arrange the holes.
- the needle-forming polymer composition may comprise general synthetic and natural polymers, preferably water-soluble polymers, or may be composed of self-soluble or biodegradable materials.
- the needle forming polymer composition comprises hyaluronic acid; (Poly (lactide), poly (lactide), poly (glycolide), poly (lactide-co-glycolide), polyanhydride, polyorthoester, polyetherester, a biodegradable polymer comprising polycaprolactone, polyesteramide, poly (butyric acid), poly (valeric acid), polyurethane and copolymers thereof; And polyolefins such as polyacrylates, ethylene-vinyl acetate polymers, acrylic substituted cellulose acetates, non-degradable polyurethanes, polystyrenes, polyvinyl chlorides, polyvinyl fluorides, poly (vinylimidazoles), chlorosulphonate polyolefins, Polyethylene oxide, and a non-biodegradable polymer including a copolymer thereof.
- polyolefins such as polyacrylates, ethylene-vinyl acetate polymers, acrylic substitute
- the coating material of the micro needle according to the present invention general synthetic and natural polymers, preferably water-soluble polymers may be used, or self-dissolving or biodegradable materials may be used.
- Examples of the substance that is dissolved by being inserted into the skin and is absorbed into the body include hyaluronic acid, sodium carboxymethyl cellulose, vinylpyrrolidone-vinyl acetate copolymer, polyvinyl alcohol ( polyvinyl alcohol, polyvinyl pyrrolidone, saccharide, or a mixture thereof may be used.
- the sugar may be xylose, sucrose, maltose, lactose, trehalose or a mixture thereof.
- the composition may contain hyaluronic acid, sodium carboxymethyl cellulose and sugar, and most preferably 1 to 60% by weight sodium carboxymethyl cellulose, based on the total weight of the composition for preparing micro needles, , 1-60 wt% hyaluronic acid, and 3-60 wt% sugar.
- the sugar is trehalose. In this composition, the highest synergistic effect with the physical properties of the micro needle corresponding to the diameter and the aspect ratio range of the tip according to the present invention can be exhibited.
- the coating material of the micro needle according to the present invention may further comprise a solubilizing agent, a plasticizer, a surfactant, a preservative, an anti-inflammatory agent and the like in addition to the above-mentioned base.
- plasticizers include polyols such as ethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, and glycerin, Or may be used in combination. In particular, glycerin was more preferable as a result of various evaluations.
- glycerin was more preferable as a result of various evaluations.
- a solubilizer various components known in the art can be appropriately selected and used.
- HCO-40 can be used as a result of various evaluations in terms of the physical properties and durability of the micro needle coating portion, and compatibility with other materials forming the micro needle coating portion.
- the coating material of the microneedles may further include additional components (active ingredients) for causing a synergistic effect or a synergistic effect depending on the target material.
- the active ingredient may be, but is not limited to, a drug, a vaccine, a nutrient or a cosmetic ingredient depending on the use, and may be a cell, protein, nucleic acid, peptide, polysaccharide, lipid, Botox, vitamin C or a derivative thereof, niacinamide, Or a retinol derivative, arbutin, adenosine, coric acid, caffeine, alfalfa, diosmetin, mace lignan, asiaticoside, polyadin, ginsenoside, f GmbHidine, hydroxyproline and the like.
- the active material may be present, for example, between materials (bases) that form the coating of the micro-needle in a form impregnated with the material coated on the micro-needle tip, or materials Base) may exist in a form surrounding the target substance, but is not limited thereto.
- the object material since the tip of the microneedle is inserted into the skin to dissolve the coating material, the object material must be contained in the coated portion of the microneedle so that there is no problem in administration into the skin, It can penetrate.
- the process of forming the coating portion at the tip portion of the microneedle may be performed by, for example, dipping or spraying, but is not limited thereto.
- the present invention also relates to a process for preparing a needle-forming polymer composition, which comprises curing the needle-forming polymer composition and then, before removing the mold (first layer), further comprising the step of applying a pressure-
- the present invention provides a method for producing a micro needle patch comprising a coated portion impregnated with a target substance.
- Such a micro needle patch may also be referred to as a micro needle device or a micro needle sheet.
- Such a microneedle patch can have one or more microneedles on one side of the support and press the other side to insert the micro needle tip into the skin and the coated portion coated on the inserted needle tip site can be melted .
- the micro needle manufactured using the supporter can be easily separated from the mold (first layer).
- the surface of the support containing the pressure-sensitive adhesive may have a tacky surface.
- tacky means a sticky sticking property, and the degree of sticking is not particularly limited. For example, It is understood to be sticky if stuck without falling.
- the viscous supporter is a skin patch, and may be made of a flexible material in consideration of bending of the skin.
- An acrylic or rubber adhesive having tackiness may be applied to the sheet having the material.
- the pressure-sensitive adhesive may be applied, for example, to a thickness of 1 to 100 mu m.
- a hydrocolloid adherent may be used for the patch.
- the hydrocolloid adherend may be a form in which hydrophilic hydrocolloid fine particles are dispersed in a hydrophobic polymer matrix by mixing a hydrophilic polymer and a hydrophobic polymer with a tackifier.
- the tackifier may include, for example, a rosin ester, etc., and may include all tackifiers commonly used in hydrocolloid adhesives in the industry.
- the hydrocolloid adherend may be attached to the micro-needle in a laminated form on a film of polyurethane, polyethylene, polypropylene, polyvinyl chloride or polyester.
- the shape of the sticky support is not particularly limited, and the shape can be manufactured taking into consideration the possibility of contact with the skin and the shape of the microneedle array.
- the tacky support may include a plurality of micro-sized holes, and may have a structure in which moisture (or liquid) can be transferred to the micro needles along the holes.
- the number of the holes is not limited and can be appropriately selected in consideration of the difference in solubility depending on the material of the micro needle.
- the adhesive substrate may also comprise a drug or cosmetic containing matrix or a reservoir.
- the skin-adhesive substrate or patch contains a medical, pharmaceutical or cosmetic active ingredient, the active ingredient can quickly migrate from the patch into the skin.
- the active ingredient contained in the patch may be the same as or different from the active ingredient contained in the above-mentioned coating part.
- the skin sticking support may be made of the same material as the coating portion of the micro needle or may be added with a material having adhesive affinity.
- the material having the adhesion affinity include a method of applying an acrylic or rubber adhesive such as polyurethane, polyethylene, polyester, polypropylene, or polyvinyl chloride, mixing a hydrophilic polymer and a tackifier with the hydrophobic polymer, A hydrocolloid in which hydrophilic hydrocolloid fine particles are dispersed in a hydrophobic polymer matrix, and the like, but the present invention is not limited thereto.
- Another aspect of the present invention is a microneedle mold for manufacturing a microneedle having a coating portion on a needle tip, the microneedle mold having a mask structure in which a hole is formed in an upper portion of a mold structure (first layer) having a microneedle- Layer structure in which a film (second layer) is adhered to the micro-needle and a method of coating the micro-needle using the micro-needle mold.
- the micro needle using the double layer structure mold and the coating method, it is possible to reduce the defective rate of the needle tip while allowing the coating layer to be formed only at the needle tip portion using the masking layer, There is an advantage that the needle tip can be coated.
- the coated portion impregnated with the target substance can be easily inserted into the skin, and effective dissolution is possible.
- the microneedle coating portion manufactured according to the present invention dissolves, the excellent skin permeability of the target material is shown, so that a desired amount of the target material can be effectively delivered to the skin.
- FIG. 1 is a schematic cross-sectional view of a microneedle mold manufactured by attaching a masking film (second layer) having a hole formed thereon to a mold structure (first layer) having a fine engraved pattern.
- FIG. 2 is a schematic plan view of a microneedle mold having a double-layer structure formed by attaching a masking film.
- FIG. 3 shows a state in which a needle-forming polymer composition is injected into a micro-needle mold of a double-layer structure and cured.
- FIG. 4 is a diagram illustrating a state in which a mold structure (first layer) is removed to expose a needle tip.
- FIG 5 is a schematic cross-sectional view of needle tip coated microneedles prepared by coating a needle tip followed by removal of the masking film (second layer).
- a micro needle coating solution was prepared as shown in Table 1 below. In the present specification, the contents of the compositions are expressed as weight% unless otherwise specified.
- Carboxymethyl cellulose (CMC) was dissolved in purified water, and Tween 80 and Trypan blue were added to prepare a solution.
- Step 2 Preparation of a film-attached double layer mold for masking
- First layer composed of a PDMS material and a masking film (second layer) composed of a silicon material and having a thickness of about 100 to 200 ⁇ m were prepared in the same manner.
- the hole of the masking film (second layer) was made to coincide with the recessed groove position of the mold structure (first layer).
- a double layer mold was prepared by attaching a masking film (second layer) on the mold structure (first layer) prepared above according to the recessed groove position.
- the micro needle manufacturing solution was heated to a temperature above the melting point of the poly (lactide) to prepare a molten state.
- the prepared micro needle manufacturing solution was supplied to the double layer structure mold prepared in step 2, coated, cooled and cured, and then the mold structure (first layer) was removed to prepare a micro needle with a masking film attached thereto.
- the coating solution prepared in step 1 was coated or adhered to a micro needle by a spraying or dipping method, and then the masking film was finally removed to prepare a micro needle having a coating on only the micro needle portion.
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Abstract
Description
함량(중량%) | |
CMC | 8 |
Tween 80 | 5 |
Trypan blue | 15 |
Water | to 100 |
Claims (11)
- (i) 마이크로니들 모양의 미세 음각 패턴을 가지는 몰드 구조물(제1층)의 상부에 홀(hole)이 형성된 마스킹 필름(제2층)을 부착하여 이중층 구조의 마이크로니들 몰드를 제조하는 단계;(ii) 상기 이중층 구조의 몰드에 니들형성 중합체 조성물을 주입하는 단계;(iii) 주입된 조성물을 경화시키어 마이크로니들 구조를 형성하는 단계;(iv) 제1층을 제거하여 상기 형성된 구조 중 니들 팁을 노출시키는 단계;(v) 상기 노출된 니들 팁을 코팅액으로 코팅하는 단계; 및(vi) 제2층을 제거하는 단계를 포함하는 것을 특징으로 하는, 니들 팁에 코팅부를 보유하는 마이크로니들을 제조하는 방법.
- 제1항에 있어서, 상기 마스킹 필름은 실리콘, 폴리우레탄, 폴리에틸렌, 폴리에스테르, 폴리프로필렌, 폴리비닐클로라이드 및 폴리에틸렌 테레프탈레이트로 이루어진 군으로부터 선택되는 1 이상을 포함하는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 코팅액은 히알루론산(hyaluronic acid), 소디움 카르복시메틸 셀룰로오스(sodium carboxymethyl cellulose), 비닐피롤리돈-비닐아세테이트 공중합체, 폴리비닐알코올(polyvinyl alcohol), 폴리비닐피릴리돈(polyvinyl pyrrolidone) 및 당(saccharide)으로 이루어진 군으로부터 선택되는 1 이상을 포함하는 것을 특징으로 하는 방법.
- 제3항에 있어서, 상기 코팅액은 핵산, 단백질, 펩티드, 다당류, 지질, 약물 및 백신으로부터 선택되는 1 이상의 활성 성분을 더 포함하는 것을 특징으로 하는 방법.
- 제 1항에 있어서, 상기 니들형성 중합체 조성물은 히알루론산; 폴리(락타이드), 폴리(글리코라이드), 폴리(락타이드-코-글리코라이드), 폴리안하이드라이드(polyanhydride), 폴리오르쏘에스테르(polyorthoester), 폴리에테르에스테르(polyetherester), 폴리카프로락톤(polycaprolactone), 폴리에스테르아마이드(polyesteramide), 폴리(뷰티릭 산), 폴리(발레릭 산), 폴리우레탄 및 이들의 공중합체를 포함하는 생분해성 고분자; 및 폴리아크릴레이트, 에틸렌-비닐아세테이트 중합체, 아크릴 치환 셀룰로오스 아세테이트, 비-분해성 폴리우레탄, 폴리스티렌, 폴리비닐 클로라이드, 폴리비닐 풀루오라이드, 폴리(비닐 이미다졸), 클로로설포네이트 폴리올레핀(chlorosulphonate polyolefins), 폴리에틸렌 옥사이드 및 이들의 공중합체를 포함하는 비-생분해성 고분자로 이루어진 군으로부터 선택되는 1 이상을 포함하는 것을 특징으로 하는 방법.
- 제1항에 있어서 상기 코팅하는 단계 (v)는 디핑(dipping) 또는 스프레잉(spraying)의 방법으로 수행되는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 단계 iii) 및 iv) 사이에 점착제가 포함된 지지체를, 형성된 마이크로니들 구조에 점착시키는 단계를 더 포함하는 것을 특징으로 하는 방법.
- 제7항에 있어서, 상기 지지체는 피부 부착성(adhesive) 패취인 것을 특징으로 하는 방법.
- 니들 팁에 코팅부를 보유하는 마이크로니들을 제조하기 위한 마이크로니들 몰드로서,마이크로니들 모양의 미세 음각 패턴을 가지는 몰드 구조물(제1층)의 상부에 홀(hole)이 형성된 마스킹 필름(제2층)이 부착되어 있는 이중층 구조를 갖는 것을 특징으로 하는 마이크로니들 몰드.
- 제9항에 있어서 상기 몰드 구조물(제1층)은 금속 음각 금형, 세라믹 음각 금형 또는 수지 음각 금형인 것을 특징으로 하는 마이크로니들 몰드.
- 제9항에 따른 이중층 구조를 갖는 마이크로니들 몰드를 이용하여 마이크로니들을 코팅하는 방법.
Priority Applications (2)
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US16/766,544 US11577064B2 (en) | 2017-11-24 | 2018-07-05 | Method and device for manufacturing microneedle having coating part on tip thereof |
CN201880075308.9A CN111372745B (zh) | 2017-11-24 | 2018-07-05 | 制造针尖具有涂覆部的微针的方法和装置 |
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KR1020170158495A KR102139335B1 (ko) | 2017-11-24 | 2017-11-24 | 니들 팁에 코팅부를 보유하는 마이크로니들을 제조하는 방법 및 장치 |
KR10-2017-0158495 | 2017-11-24 |
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WO2019103268A1 true WO2019103268A1 (ko) | 2019-05-31 |
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US (1) | US11577064B2 (ko) |
KR (1) | KR102139335B1 (ko) |
CN (1) | CN111372745B (ko) |
WO (1) | WO2019103268A1 (ko) |
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KR102249834B1 (ko) * | 2017-12-28 | 2021-05-10 | 주식회사 더마젝 | 마이크로 니들 패치의 제조 방법 |
KR102412449B1 (ko) | 2020-01-16 | 2022-06-23 | 주식회사 로즈랩 | 생분해성 고분자 마이크로니들 |
KR102427901B1 (ko) * | 2022-01-28 | 2022-08-02 | 주식회사 대웅테라퓨틱스 | 마이크로니들 제조방법 |
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US20200324096A1 (en) | 2020-10-15 |
CN111372745A (zh) | 2020-07-03 |
CN111372745B (zh) | 2021-12-21 |
US11577064B2 (en) | 2023-02-14 |
KR20190060363A (ko) | 2019-06-03 |
KR102139335B1 (ko) | 2020-07-29 |
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