WO2016088886A1 - マイクロニードルデバイスシステム - Google Patents
マイクロニードルデバイスシステム Download PDFInfo
- Publication number
- WO2016088886A1 WO2016088886A1 PCT/JP2015/084193 JP2015084193W WO2016088886A1 WO 2016088886 A1 WO2016088886 A1 WO 2016088886A1 JP 2015084193 W JP2015084193 W JP 2015084193W WO 2016088886 A1 WO2016088886 A1 WO 2016088886A1
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- WIPO (PCT)
- Prior art keywords
- microneedle
- skin
- sheet
- microneedle device
- adhesive layer
- Prior art date
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Classifications
-
- 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
- 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, 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
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7023—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms
- A61K9/703—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
-
- 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
- A61M2037/0061—Methods for using microneedles
Definitions
- the present invention relates to a microneedle device system. This application claims priority on December 5, 2014 based on Japanese Patent Application No. 2014-247191 for which it applied to Japan, and uses the content here.
- Patent Document 1 includes a plurality of microneedles formed on a sheet substantially along the main surface of the sheet, and the microneedle rises from the main surface and rises when the sheet is bent.
- a microneedle sheet is disclosed in which the needle pierces the skin.
- Patent Document 1 discloses a microneedle device in which the above-described sheet-like microneedle is fixed to a sticking surface of a base material that comes into contact with the skin when applied and is protected by a release film.
- an object of the present invention is to provide a microneedle device system that includes a sheet-like microneedle and has an improved start-up of the microneedle.
- the present invention is as follows. (1) One surface is a skin contact surface, the other surface is a back surface, and a plurality of microneedles are formed substantially along the surface of the sheet, a part of which is a skin puncture region, and the sheet is bent in the thickness direction.
- the microneedle in the skin puncture area rises up from the skin contact surface so as to be able to puncture the skin, the sheet-like microneedle, the adhesive layer provided on the sheet-like microneedle, and the peelable adhesive layer
- a microneedle device having a liner attached thereto, and a bending tool that bends the microneedle device in a thickness direction, and an auxiliary tool on which the microneedle device is mounted so as to be movable along the bending section And a microneedle device system.
- microneedle device system provided with a sheet-like microneedle and improved in the start-up of the microneedle.
- FIG. 2A It is a perspective view which shows one Embodiment of a sheet-like microneedle. It is sectional drawing which shows one Embodiment of a microneedle device. It is a top view of the microneedle device of FIG. 2A. It is a top view of the microneedle device of FIG. 2A. It is sectional drawing which shows the state which applied the microneedle device of FIG. 2A to skin. It is sectional drawing which shows one Embodiment of a microneedle device. It is sectional drawing which shows the state which applied the microneedle device of FIG. 4 to skin. It is sectional drawing which shows one Embodiment of a microneedle device.
- FIG. 1 is a cross-sectional view showing one embodiment of a microneedle device system fixed on the skin. It is the enlarged view of the area
- FIG. 21 is a cross-sectional view showing one embodiment of a microneedle device system fixed on the skin. It is an enlarged view of the area
- the present invention provides a plurality of microneedles formed substantially along a surface of a sheet, one side of which is a skin contact surface, the other side is a back surface, and a part is a skin puncture region,
- the microneedles in the skin puncture region rise from the skin contact surface so as to be able to puncture the skin, a sheet-like microneedle, an adhesive layer provided on the sheet-like microneedle, A microneedle device having a liner releasably attached to the adhesive layer, and a bending portion that bends the microneedle device in a thickness direction, and the microneedle device is movable along the bending portion.
- a microneedle device system comprising:
- the skin puncture region means a region on the sheet-like microneedle where a microneedle that actually punctures the skin exists.
- FIG. 1 is a perspective view showing an embodiment of a sheet-like microneedle.
- the sheet-like microneedle 100 includes a sheet 110 having a skin contact surface 113 on one side and a back surface 115 on the other side.
- a plurality of microneedles 118 are formed on the sheet 110 substantially along the surface of the sheet 110.
- microneedles 118 are arranged so as to be aligned in the longitudinal direction and the width direction of the sheet 110, and the tips of all the microneedles 118 face one end of the sheet (front side in FIG. 1).
- the material of the sheet-like microneedle 110 and the microneedle 118 is not particularly limited.
- metals such as stainless steel, titanium, nickel-titanium alloy, tantalum, cobalt-chromium alloy, magnesium alloy; polylactic acid (PLA), polyglycol Biodegradable resins such as acid (PGA), lactic acid-glycolic acid copolymer (PLGA), and polycaprolactone (PCL); synthetic resins such as polyethylene terephthalate (PET) and nylon; and many resins such as pullulan, hyaluronic acid, and chondroitin sulfate Examples include saccharides; polyamino acids such as polylysine and polyglutamic acid; water-soluble polymers such as synthetic polymers such as polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP); and ceramics.
- PVA polyvinyl alcohol
- PVP polyvinylpyrrolidone
- the material of the microneedle 118 is preferably biocompatible.
- “having biocompatibility” refers to a property that can be used safely without impairing the function of the living body or the living body-derived component in contact with the living body or the living body-derived component. Specific examples include antithrombogenicity to blood, low adsorption to proteins, non-adhesion and non-inflammatory to living organisms, non-toxicity to cells, and non-irritating properties to living tissues.
- the microneedle 118 can be formed by etching, for example.
- the microneedle 118 can be formed by dissolving the sheet 110 using a chemical solution.
- the microneedle 118 can be formed by punching the sheet 110 with a laser or the like, for example.
- the shape of the microneedle is not particularly limited as long as it can puncture the skin.
- the sheet-like microneedle 100 it is not necessary to raise the microneedle 118 from the skin contact surface 113 of the sheet 110. For this reason, the sheet-like microneedle 100 can be manufactured easily and inexpensively.
- the dimension of the sheet-like microneedle 100 is not particularly limited.
- the thickness of the sheet-like microneedle 100 may be, for example, 5 to 1000 ⁇ m, for example, 10 to 300 ⁇ m.
- the length of the sheet-like microneedle 100 in the longitudinal direction may be, for example, 0.1 to 50 cm, for example, 1 to 20 cm.
- the width of the sheet-like microneedle 100 may be, for example, 0.1 to 60 cm, for example, 1 to 30 cm.
- the length and width of the sheet-like microneedle 100 may be adjusted in consideration of, for example, the dose of the drug, for example, may be adjusted in consideration of the size of the living body.
- Parameters related to the microneedle 118 are not particularly limited. Specifically, the height of the microneedle 118 may be 10 to 10,000 ⁇ m, for example, 100 to 1000 ⁇ m. The density of the microneedles 118 may be, for example, 0.05 to 10,000 / cm 2 , for example, 1 to 5000 / cm 2 .
- the microneedle 118 in the skin puncture region 120 rises from the skin contact surface 113, and the raised microneedle 118 pierces the skin.
- microneedle device is not limited to the following embodiments, and various modifications are possible.
- FIG. 2A to 2C are cross-sectional views showing a first embodiment of the microneedle device.
- FIG. 2A shows a cross section including a cross section in the width direction of the sheet-like microneedle 100 included in the microneedle device 600a.
- the microneedle device 600a includes a sheet-like microneedle 100 and an adhesive layer laminated on a skin contact surface 113 (a region other than the skin puncture region 120 on the skin contact surface 113) excluding the skin puncture region 120 of the sheet-like microneedle 100. 610.
- the adhesive layer 610 has a function of fixing the microneedle device 600a to the skin when the microneedle device 600a is applied to the skin.
- the adhesive layer 610 may contain a drug.
- the adhesive layer is not laminated on the skin puncture region 120 on the back surface 115 of the sheet-like microneedle 100. For this reason, when the sheet-like microneedle 100 is bent in the thickness direction, the microneedle 118 rises well, and the skin can be punctured efficiently.
- a liner 650 is attached on the skin contact surface 113 and the adhesive layer 610 on the outer surface of the microneedle device 600a.
- the outer surface of the microneedle device means a surface on both sides in the thickness direction of the sheet-like microneedle and not a side surface of the sheet-like microneedle.
- the liner 650 has a function of protecting the microneedle device 600a.
- the liner 650 on the skin contact surface 113 side also has a function of raising the microneedles 118 of the sheet-like microneedles 100. That is, it can be said that the liner 650 on the skin contact surface 113 side is a microneedle startup liner.
- FIG. 2B and 2C are plan views of the microneedle device 600a.
- FIG. 2B is a plan view of the microneedle device 600a from which the liner 650 has been peeled, as viewed from the skin contact surface 113 side of the sheet-like microneedle 100.
- FIG. 2B As shown in FIG. 2B, in the microneedle device 600a, an adhesive layer 610 is laminated on the skin contact surface 113 of the sheet-like microneedle 100 except for the skin puncture area 120 (area that does not overlap with the skin puncture area 120).
- 2C is a plan view of the microneedle device 600a viewed from the back surface 115 side of the sheet-like microneedle 100.
- the pressure-sensitive adhesive substrate constituting the pressure-sensitive adhesive layer is not particularly limited, and examples thereof include styrene-based block copolymers, natural rubber, polyisobutylene resins, polyisoprene resins, silicone resins, and (meth) acrylic acid ester copolymers. It is done.
- the pressure-sensitive adhesive layer may contain a tackifying resin.
- the tackifying resin include rosin derivatives (eg, rosin, glycerin ester of rosin, hydrogenated rosin, glycerin ester of hydrogenated rosin, pentaerythrester ester of rosin), alicyclic saturated hydrocarbon resin (eg, Alcon P100). Arakawa Chemical Industries, Ltd.), aliphatic hydrocarbon resins (for example, Quinton B170, Nippon Zeon), terpene resins (for example, Clearon P-125, Yasuhara Chemical), resin maleate and the like.
- One kind of tackifier resin may be used alone, or two or more kinds thereof may be mixed and used.
- the pressure-sensitive adhesive layer may contain a plasticizer.
- Plasticizers include petroleum oils (eg, paraffinic process oil, liquid paraffin, naphthenic process oil, aromatic process oil, etc.), squalane, squalene, vegetable oils (eg, olive oil, camellia oil, castor oil, tall Oil, peanut oil), silicon oil, dibasic acid ester (eg, dibutyl phthalate, dioctyl phthalate, etc.), liquid rubber (eg, liquid polybutene, liquid isoprene rubber), liquid fatty acid esters (eg, isopropyl myristate, lauric acid) Hexyl, diethyl sebacate, diisopropyl sebacate), diethylene glycol, polyethylene glycol, glycol salicylate, propylene glycol, dipropylene glycol, triacetin, triethyl citrate, crotamito Etc.
- petroleum oils eg, paraffinic process oil, liquid paraffin,
- liquid paraffin liquid polybutene, isopropyl myristate, diethyl sebacate, and hexyl laurate are preferable, and liquid polybutene, isopropyl myristate, and liquid paraffin are particularly preferable.
- plasticizer individually by 1 type or in mixture of 2 or more types.
- the pressure-sensitive adhesive layer may contain an absorption accelerator.
- the absorption enhancer may be any compound that has been recognized to promote absorption by the skin, for example, a saturated or unsaturated fatty acid having 6 to 20 carbon atoms, a saturated or unsaturated fatty alcohol having 2 to 10 carbon atoms.
- the pressure-sensitive adhesive layer can be produced, for example, by the following method.
- the material of the pressure-sensitive adhesive layer may be mixed and heat-melted, applied to a release liner, and then transferred to a predetermined position of the sheet-like microneedle.
- the material of the pressure-sensitive adhesive layer is mixed, dissolved in an organic solvent such as toluene, hexane, ethyl acetate, lower alcohol, cyclohexane, etc., stretched on a release liner, and then the organic solvent is dried and removed at a predetermined temperature to form a sheet. You may transfer to the predetermined position of a microneedle.
- the thickness of the pressure-sensitive adhesive layer is not particularly limited, and may be, for example, 20 to 1000 ⁇ m, for example, 50 to 500 ⁇ m.
- the sheet-like microneedle may be for drug delivery.
- the drug may be contained in the pressure-sensitive adhesive layer or may be contained in the material of the sheet-like microneedle itself.
- the drug may be supported on the surface or void of the sheet-like microneedle by coating / printing, embedding, lamination, etc., and the drug is directly applied to the application site before or after application of the sheet-like microneedle to the skin. May be applied.
- a drug storage tank drug-containing part
- Examples of the drug storage layer include an adhesive layer 630 in a microneedle device 600f of a sixth embodiment described later.
- the drug that can be applied using the microneedle device is not particularly limited.
- antibiotics for example, antibiotics, antifungal agents, antitumor agents, cardiotonic agents, antiarrhythmic agents, vasodilators, antihypertensives, diuretics, antihypertensive diuretics , Cardiovascular agent, antiplatelet agent, hemostatic agent, antihyperlipidemic agent, antipyretic / analgesic / anti-inflammatory agent, antirheumatic, relaxant, antitussive, seizure, anti-ulcer agent, sedative, antiepileptic agent, antidepressant Agents, antiallergic agents, antidiabetic agents, antituberculosis agents, hormone agents, narcotic antagonists, bone resorption inhibitors, angiogenesis inhibitors, local anesthetics and the like.
- the material of the liner is not particularly limited, metal: polyester such as polyethylene terephthalate (PET); polyolefin such as ethylene vinyl acetate copolymer (EVA), polyurethane (PU), polyethylene (PE), polypropylene (PP); polyether Resins such as sulfone (PES), polycarbonate (PC), polystyrene (PS), Teflon (registered trademark), (meth) acrylic ester resin; elastomers and the like.
- PET polyethylene terephthalate
- EVA ethylene vinyl acetate copolymer
- PU polyurethane
- PE polyethylene
- PE polypropylene
- polyether Resins such as sulfone (PES), polycarbonate (PC), polystyrene (PS), Teflon (registered trademark),
- (meth) acrylic ester resin elastomers and the like.
- (meth) acrylic acid means methacrylic acid or acrylic acid.
- the surface of the liner may be subjected to a release treatment with a release treatment agent such as a silicone release treatment agent, a fluorine release treatment agent, a long-chain alkyl release treatment agent, a fatty acid amide release treatment agent, or silica powder.
- a release treatment agent such as a silicone release treatment agent, a fluorine release treatment agent, a long-chain alkyl release treatment agent, a fatty acid amide release treatment agent, or silica powder.
- the microneedle device may include a support.
- the material of the support is not particularly limited.
- Metal Polyester such as polyethylene terephthalate (PET); Polyolefin such as ethylene vinyl acetate copolymer (EVA), polyurethane (PU), polyethylene (PE), polypropylene (PP); Poly Resins such as ether sulfone (PES), polycarbonate (PC), polystyrene (PS), Teflon (registered trademark), (meth) acrylic ester resin; elastomers and the like.
- PET polyethylene terephthalate
- EVA ethylene vinyl acetate copolymer
- PU polyurethane
- PE polyethylene
- PP polypropylene
- Poly Resins such as ether sulfone (PES), polycarbonate (PC), polystyrene (PS), Teflon (registered trademark), (meth) acrylic ester resin; elastomers and the like.
- the liner is an easily peelable film
- the support is a film that cannot be peeled or is not supposed to peel. Whether or not the film can be easily peeled depends on, for example, whether or not the film surface has been subjected to a release treatment.
- FIG. 3 is a diagram showing a state in which the microneedle device 600a is applied to the skin (microneedle device 600a ').
- the liner 650 is peeled off when the microneedle device 600a is applied to the skin S.
- the microneedle 118 rises from the skin contact surface 113 of the sheet-like microneedle 100 and punctures the skin S.
- the microneedle device 600 a ′ can be fixed on the skin S by the adhesive layer 610.
- FIG. 4 is a cross-sectional view showing a second embodiment of the microneedle device.
- the cross section containing the cross section of the width direction of the sheet-like microneedle 100 with which the microneedle device 600b is provided is shown.
- the microneedle device 600b includes a sheet-like microneedle 100 and an adhesive layer laminated on a skin contact surface 113 (a region other than the skin puncture region 120 on the skin contact surface 113) excluding the skin puncture region 120 of the sheet-like microneedle 100. 610.
- the pressure-sensitive adhesive layer 610 has a region 612 extending to the outside of the sheet-like microneedle 100 in a plan view of the microneedle device 600b.
- the adhesive layer 610 has a function of fixing the microneedle device 600b to the skin when the microneedle device 600b is applied to the skin. Moreover, the adhesive layer 610 may contain a drug. Further, the adhesive layer is not laminated on the skin puncture region 120 on the back surface 115 of the sheet-like microneedle 100. For this reason, when the sheet-like microneedle 100 is bent in the thickness direction, the microneedle 118 rises well, and the skin can be punctured efficiently.
- a liner 650 is attached on the skin contact surface 113 and the adhesive layer 610 on the outer surface of the microneedle device 600b.
- a support body 660 is disposed on the back surface 115 of the sheet-like microneedle 100 and the region 612 of the pressure-sensitive adhesive layer 610, which are the other outer surfaces.
- the liner 650 and the support 660 have a function of protecting the microneedle device 600b.
- the liner 650 on the skin contact surface 113 side also has a function of raising the microneedles 118 of the sheet-like microneedles 100. That is, it can be said that the liner 650 on the skin contact surface 113 side is a microneedle startup liner.
- the materials for the pressure-sensitive adhesive layer, drug, liner, and support are the same as those described above.
- the microneedle device of the present embodiment can be easily manufactured because of its simple structure.
- the microneedle device of this embodiment includes the support 660 so that, for example, when the sheet-like microneedle 100 is bent in the microneedle device system of the third embodiment described later, the adhesive layer 610 is a member. It can be prevented from being adhered and fixed to the cylindrical portion 100A of A, or the adhesive layers 610 can be bonded and fixed to each other.
- said effect of the support body 660 is common about the thing provided with the support body 660 among the microneedle devices mentioned later.
- FIG. 5 is a diagram showing a state (microneedle device 600b ′) in which the microneedle device 600b is applied to the skin.
- the liner 650 on the skin contact surface 113 side is peeled off, and the support 660 on the back surface 115 side remains. .
- the remaining support 660 can protect the microneedle device 600b ′.
- the microneedle 118 rises from the skin contact surface 113 of the sheet-like microneedle 100 and punctures the skin S.
- the microneedle device 600b ′ can be fixed on the skin S by the adhesive layer 610.
- FIG. 6 is a cross-sectional view showing a third embodiment of the microneedle device.
- the cross section containing the cross section of the width direction of the sheet-like microneedle 100 with which the microneedle device 600c is provided is shown.
- the microneedle device 600c includes a sheet-like microneedle 100 and an adhesive layer laminated on a skin contact surface 113 (a region other than the skin puncture region 120 on the skin contact surface 113) excluding the skin puncture region 120 of the sheet-like microneedle 100. 610 and a pressure-sensitive adhesive layer 620 laminated on a part of the back surface 115 of the sheet-like microneedle 100 (a region excluding the skin puncture region 120 on the back surface 115).
- the pressure-sensitive adhesive layer 610 may contain a drug.
- the adhesive layer is not laminated on the skin puncture region 120 on the back surface 115 of the sheet-like microneedle 100. For this reason, when the sheet-like microneedle 100 is bent in the thickness direction, the microneedle 118 rises well, and the skin can be punctured efficiently.
- a liner 650 is attached on the skin contact surface 113 and the adhesive layer 610 on the outer surface of the microneedle device 600c.
- the support 660 is disposed on the back surface 115 of the sheet-like microneedle 100 and the surface 623 of the pressure-sensitive adhesive layer 620 opposite to the sheet-like microneedle 100, which is the other outer surface.
- the liner 650 and the support 660 have a function of protecting the microneedle device 600c.
- the liner 650 on the skin contact surface 113 side also has a function of raising the microneedles 118 of the sheet-like microneedles 100. That is, it can be said that the liner 650 on the skin contact surface 113 side is a microneedle startup liner.
- the materials for the pressure-sensitive adhesive layer, drug, liner, and support are the same as those described above.
- FIG. 7 is a view showing a state (microneedle device 600c ′) in which the microneedle device 600c is applied to the skin.
- the liner 650 on the skin contact surface 113 side is peeled off, and the support 660 on the back surface 115 side remains. .
- the remaining support 660 can protect the microneedle device 600c ′.
- the microneedle 118 rises from the skin contact surface 113 of the sheet-like microneedle 100 and punctures the skin S.
- the microneedle device 600c ′ can be fixed on the skin S by the adhesive layer 610.
- FIG. 8 is a cross-sectional view showing a fourth embodiment of the microneedle device.
- the cross section containing the cross section of the width direction of the sheet-like microneedle 100 with which the microneedle device 600d is provided is shown.
- the microneedle device 600d includes a sheet-like microneedle 100 and an adhesive layer 620 laminated on a part of the back surface 115 of the sheet-like microneedle 100 (a region excluding the skin puncture region 120 on the back surface 115).
- the adhesive layer 620 has a region 622 extending to the outside of the sheet-like microneedle 100 in a plan view of the microneedle device 600d, and the microneedle device can be fixed to the skin by the adhesive force of this region. it can.
- the pressure-sensitive adhesive layer 620 may contain a drug.
- a support 660 is disposed on the outer surface of the microneedle device 600d, that is, on the back surface 115 of the sheet-like microneedle 100 and on the surface 623 of the adhesive layer 620 opposite to the sheet-like microneedle 100.
- a liner 650 is attached on the skin contact surface 113 and on the area 622 of the adhesive layer 620.
- the liner 650 and the support 660 have a function of protecting the microneedle device 600d. Furthermore, as will be described later, the liner 650 on the skin contact surface 113 side also has a function of raising the microneedles 118 of the sheet-like microneedles 100. That is, it can be said that the liner 650 on the skin contact surface 113 side is a microneedle startup liner.
- the materials for the pressure-sensitive adhesive layer, drug, liner, and support are the same as those described above. Since the microneedle device of this embodiment has a simple structure, it can be easily manufactured.
- the adhesive layer is not laminated on the skin puncture region 120. For this reason, when the sheet-like microneedle 100 is bent in the thickness direction, the microneedle 118 rises well, and the skin can be punctured efficiently.
- FIG. 9 is a diagram showing a state where the microneedle device 600d is applied to the skin (microneedle device 600d ′).
- the liner 650 on the skin contact surface 113 side is peeled off, and the support 660 on the back surface 115 side remains. .
- the remaining support 660 can protect the microneedle device 600d ′.
- the microneedle 118 rises from the skin contact surface 113 of the sheet-like microneedle 100 and punctures the skin S.
- the microneedle device 600 d ′ can be fixed on the skin S by the region 622 of the pressure-sensitive adhesive layer 620.
- FIG. 10 is a sectional view showing a fifth embodiment of the microneedle device.
- the cross section containing the cross section of the width direction of the sheet-like microneedle 100 with which the microneedle device 600e is provided is shown.
- the microneedle device of this embodiment is a combination of the microneedle devices of the second and fourth embodiments described above.
- the microneedle device 600e includes a sheet-like microneedle 100 and an adhesive layer laminated on the skin contact surface 113 excluding the skin puncture region 120 of the sheet-like microneedle 100 (region excluding the skin puncture region 120 on the skin contact surface 113). 610 and a pressure-sensitive adhesive layer 620 laminated on a part of the back surface 115 of the sheet-like microneedle 100 (a region excluding the skin puncture region 120 on the back surface 115).
- the pressure-sensitive adhesive layer 620 has a region 622 extending to the outside of the sheet-like microneedle 100.
- the pressure-sensitive adhesive layer 610 or the pressure-sensitive adhesive layer 620 may contain a drug.
- the support 660 is disposed on the outer surface of the microneedle device 600e, that is, on the back surface 115 of the sheet-like microneedle 100 and on the surface 623 of the adhesive layer 620 opposite to the sheet-like microneedle 100.
- a liner 650 is attached to the skin contact surface 113, the adhesive layer 610, and the region 622 of the adhesive layer 620.
- the liner 650 and the support 660 have a function of protecting the microneedle device 600e.
- the liner 650 on the skin contact surface 113 side also has a function of raising the microneedles 118 of the sheet-like microneedles 100. That is, it can be said that the liner 650 on the skin contact surface 113 side is a microneedle startup liner.
- the materials for the pressure-sensitive adhesive layer, drug, liner, and support are the same as those described above.
- the adhesive layer is not laminated on the skin puncture region 120 on the back surface 115 of the sheet-like microneedle 100 of the microneedle device 600e. For this reason, when the sheet-like microneedle 100 is bent in the thickness direction, the microneedle 118 rises well, and the skin can be punctured efficiently.
- FIG. 11 is a diagram showing a state where the microneedle device 600e is applied to the skin (microneedle device 600e ').
- the liner 650 on the skin contact surface 113 side is peeled off, and the support 660 on the back surface 115 side remains. .
- the remaining support 660 can protect the microneedle device 600e '.
- the microneedle 118 rises from the skin contact surface 113 of the sheet-like microneedle 100 and punctures the skin S.
- the microneedle device 600 e ′ can be fixed on the skin S by the region 622 of the pressure-sensitive adhesive layer 610 and the pressure-sensitive adhesive layer 620.
- the microneedle device 600e ′ can be fixed on the skin S not only by the pressure-sensitive adhesive layer 610 but also by the region 622 of the pressure-sensitive adhesive layer 620. Can be fixed.
- FIG. 12 is a cross-sectional view showing a sixth embodiment of the microneedle device.
- FIG. 12 shows a cross section including a cross section in the width direction of the sheet-like microneedle 100 included in the microneedle device 600f.
- the microneedle device 600f includes a sheet-like microneedle 100, an adhesive layer 620 laminated on a part of the back surface 115 of the sheet-like microneedle 100 (a region excluding the skin puncture region 120 on the back surface 115), a sheet-like microneedle. And a pressure-sensitive adhesive layer 630 laminated on a part of the back surface 115 of 100 (skin puncture region 120 of the back surface 115).
- the pressure-sensitive adhesive layer 620 has a region 622 extending to the outside of the sheet-like microneedle 100, and the microneedle device can be fixed to the skin by the adhesive force of this region. Further, the adhesive strength of the adhesive layer 630 is adjusted to a weakness that does not hinder the rising of the microneedle 118. Further, the pressure-sensitive adhesive layer 620 or the pressure-sensitive adhesive layer 630 may contain a drug.
- the outer surface of the microneedle device 600f that is, the surface 623 of the adhesive layer 620 opposite to the sheet-like microneedle 100, and the opposite side of the adhesive layer 630 from the sheet-like microneedle 100 are provided.
- a support 660 is disposed on the surface 633, and a liner 650 is attached on the skin contact surface 113 and on the area 622 of the adhesive layer 620.
- the liner 650 and the support body 660 have a function of protecting the microneedle device 600f.
- the liner 650 on the skin contact surface 113 side also has a function of raising the microneedles 118 of the sheet-like microneedles 100. That is, the liner 650 on the skin contact surface 113 side can be said to be a microneedle startup liner.
- the materials for the pressure-sensitive adhesive layer, drug, liner, and support are the same as those described above.
- FIG. 13 is a diagram showing a state in which the microneedle device 600f is applied to the skin (microneedle device 600f ').
- the liner 650 on the skin contact surface 113 side is peeled off, and the support 660 on the back surface 115 side remains. .
- the remaining support 660 can protect the microneedle device 600f '.
- the microneedle 118 rises from the skin contact surface 113 of the sheet-like microneedle 100 and punctures the skin S.
- the microneedle device 600 f ′ can be fixed on the skin S by the region 622 of the adhesive layer 620.
- the adhesive layer 630 contains a drug, the drug can be efficiently administered to the living body through the skin punctured by the microneedle 118.
- FIG. 21 is a cross-sectional view showing the structure of the microneedle device 600h.
- the microneedle device 600h does not have the support 660 in the skin puncture region 120 on the back surface 115 in the above-described microneedle device 600d. That is, in the microneedle device 600h, the support 660 is disposed on the surface 623 of the pressure-sensitive adhesive layer 620.
- the materials for the pressure-sensitive adhesive layer, drug, liner and support are the same as those described above.
- FIG. 22 is a diagram showing a state in which the microneedle device 600h is applied to the skin (microneedle device 600h ′).
- the liner 650 on the skin contact surface 113 side is peeled off when the microneedle device 600h is applied to the skin S, and the support 660 on the surface 623 of the adhesive layer 620 is removed. Is left behind. The remaining support 660 can protect the adhesive layer 620.
- the microneedle 118 rises from the skin contact surface 113 of the sheet-like microneedle 100 and punctures the skin S.
- the microneedle device 600 h ′ can be fixed on the skin S by the region 622 of the pressure-sensitive adhesive layer 620.
- the microneedle device 600h ′ does not have the support 660 in the skin puncture region 120 on the back surface 115, the drug can be efficiently administered to the living body from the back surface 115 side in the skin puncture region 120.
- FIG. 23 is a cross-sectional view showing the structure of the microneedle device 600i.
- the microneedle device 600i has a structure in which a liner 650 is disposed instead of the support 660 in the above-described microneedle device 600d. That is, the liner 650 is disposed on the back surface 115 of the sheet-like microneedle 100 and on the surface 623 of the pressure-sensitive adhesive layer 620, and the liner 650 is also attached on the skin contact surface 113 and the region 622 of the pressure-sensitive adhesive layer 620. ing.
- the materials for the pressure-sensitive adhesive layer, drug, liner and support are the same as those described above.
- FIG. 24 is a diagram showing a state in which the microneedle device 600i is applied to the skin (microneedle device 600i ').
- the liner 650 disposed on the back surface 115 of the sheet-like microneedle 100 and the surface 623 of the adhesive layer 620 when the microneedle device 600i is applied to the skin S, the liner 650 disposed on the back surface 115 of the sheet-like microneedle 100 and the surface 623 of the adhesive layer 620, In addition, the liner 650 disposed on the skin contact surface 113 side is peeled off, and the surface 623 of the adhesive layer 620 is exposed. Further, the microneedle 118 rises from the skin contact surface 113 of the sheet-like microneedle 100 and punctures the skin S. Further, the microneedle device 600 i ′ can be fixed on the skin S by the region 622 of the pressure-sensitive adhesive layer 620.
- the drug can be efficiently administered to the living body from the back surface 115 side in the skin puncture region 120.
- the drug-containing film can be fixed using the surface 623 of the pressure-sensitive adhesive layer 620.
- the microneedle devices 600b, 600c, and 600e may have a structure that does not include a part or all of the support 660, similar to the microneedle devices 600h and 600i.
- the present invention provides a plurality of microneedles formed substantially along a surface of a sheet, one side of which is a skin contact surface, the other side is a back surface, and a part is a skin puncture region, When bent in the thickness direction, the microneedles in the skin puncture region rise from the skin contact surface so as to be able to puncture the skin, a sheet-like microneedle, an adhesive layer provided on the sheet-like microneedle, A microneedle device having a liner releasably attached to the adhesive layer, and a bending portion that bends the microneedle device in a thickness direction, and the microneedle device is movable along the bending portion.
- a microneedle device system comprising:
- FIG. 14 is a longitudinal sectional view of the sheet-like microneedle 100 showing a state where the microneedles 118 of the sheet-like microneedle 100 are puncturing the skin S.
- FIG. 14 In order to puncture the microneedles 118 into the skin, as shown in FIG. 14, from the state where the sheet-like microneedles are bent in the thickness direction, the force F1 that moves the bending point P in the skin puncture direction, the sheet-like micro At least a force F2 for bending the needle 100 to generate a curvature and a force F3 for fixing a part of the sheet-like microneedle 100 to the skin are required.
- the force F2 may be applied in a direction perpendicular to the main surface of the sheet.
- the magnitude relationship between the forces F1 to F3 must be appropriate. Specifically, in order to move the bending point P in the skin puncture direction by the force F1, the force F3 must always be greater than the force F1. Further, when the microneedle 118 is punctured into the skin, the force F2 must be greater than 0 in order to have a curvature suitable for puncture. That is, when the two conditions of F1 ⁇ F3 and F2> 0 are satisfied at the same time, the microneedle 118 can be continuously punctured into the skin. Further, when the force F2 is further increased, the microneedle 118 can be punctured deeper. When the sheet-like microneedle 100 is fixed to the skin with an adhesive layer having a width of 4 mm, for example, the magnitude of the force F3 is preferably 24.7 N or more.
- FIG. 15 is a perspective view showing an embodiment of a microneedle device system.
- the process of puncturing the skin with the microneedle 118 of the microneedle device 600d of the above-described fourth embodiment using the auxiliary tool 700 will be described.
- the microneedle device system of this embodiment includes a microneedle device 600d and an auxiliary tool 700.
- the auxiliary tool 700 will be described.
- the auxiliary tool 700 includes a rectangular substrate 710, two slit-like through holes 712 and 713 provided in the substrate 710, and an adhesive layer 720 laminated on one surface 718 of the substrate 710. It has.
- the surface opposite to the surface 718 of the substrate 710 is referred to as a surface 715.
- the adhesive layer 720 can be seen through.
- the liner 650 is also transparent, the sheet-like microneedle 100 can be seen through.
- a portion of the substrate 710 closer to the through hole 713 than the through hole 712 functions as a bent portion that bends the microneedle device 600d in the thickness direction.
- the liner 650 attached to the outer surface on the skin contact surface 113 side is longer than the longitudinal direction of the sheet-like microneedle 100, and there is a region where the liner 650 is not in contact with the sheet-like microneedle 100. .
- the user passes one end of the liner 650 through the through hole 712 and the through hole 713, sets the microneedle device 600d in the auxiliary tool 700, and assembles the microneedle device system. More specifically, the user passes one end of the liner 650 attached to the outer surface on the skin contact surface 113 side from the surface 715 side of the through hole 712 toward the surface 718 side, and further, the surface 718 of the through hole 713. From the side to the surface 715 side.
- the liner 650 is positioned on the surface 718 side between the through hole 712 and the through hole 713 as shown in FIG. 16A.
- the user bends the sheet-like microneedle 100 in the thickness direction on the surface 718 side between the through-hole 712 and the through-hole 713 and maintains this state while maintaining the state.
- the assisting tool 700 is attached to the application site of the medicine.
- FIG. 16A is a longitudinal sectional view of the auxiliary tool 700 fixed on the skin S by the above operation.
- the auxiliary tool 700 is fixed on the skin S by the adhesive layer 720, and the sheet-like microneedle 100 is passed through the through-hole 712 from the surface 715 side toward the surface 718 side, The skin S is bent in the thickness direction.
- a portion of the substrate 710 closer to the through hole 713 than the through hole 712 functions as a bent portion that bends the microneedle device 600d in the thickness direction.
- FIG. 16B is an enlarged view of region r in FIG. 16A.
- one end of the sheet-like microneedle 100 is fixed on the skin S by an adhesive layer 640.
- one end of the sheet-like microneedle 100 may be further fixed on the skin S with an adhesive layer 720.
- the user pinches one end of the liner 650 and pulls it in the direction indicated by the arrow in FIG. 16A, that is, away from one end fixed by the through hole 712 and the adhesive layer 640.
- the sheet-like microneedle 100 is guided by the liner 650, passes through the through-hole 712, and enters the space between the skin S and the substrate 710 of the auxiliary tool 700.
- the sheet-like microneedle 100 is bent 180 degrees in this space. Then, as shown in FIG. 17, the microneedle 118 positioned at the bent portion rises from the skin contact surface 113, and the raised microneedle 118 punctures the skin S.
- the force F ⁇ b> 2 is generated in the direction perpendicular to the skin S by limiting the distance D between the substrate 710 of the assisting tool 700 and the skin S.
- the microneedle 118 rises from the sheet-like microneedle 100 bent by the force F2.
- the microneedle 118 can be punctured into the skin.
- the pressure-sensitive adhesive layer 620 is not visible because of the cross-sectional position shown.
- the user can peel off the auxiliary tool 700 from the skin S. Further, the user may immediately peel off the sheet-like microneedle 100 when the purpose is to penetrate the skin barrier, or the sheet-like microneedle 100 over a predetermined time when the sheet-like microneedle 100 holds the drug. May continue to be applied to the skin S.
- the microneedle device system according to the present embodiment is configured such that the liner 650 passes through the through-hole 713, so that the liner 650 can be easily pulled straight more accurately.
- a configuration in which the through hole 713 does not exist may be employed. In this case, the liner 650 may be pulled in the direction away from the through hole 712 through the surface 718 side of the substrate 710.
- the sheet-like microneedle 100 is firmly fixed on the skin S by the adhesive layer 640 in addition to the adhesive layer 620.
- a configuration in which the adhesive layer 640 does not exist may be employed.
- FIG. 18 is a cross-sectional view showing another embodiment of the microneedle device system.
- the microneedle device system of the present embodiment includes an auxiliary tool 1500 and a microneedle device 600g wound in a roll shape.
- the microneedle device 600g has a configuration in which the liner 650 is removed from the microneedle device 600b described above, and the liner 650 is removably attached instead of the support 660.
- the auxiliary tool 1500 includes a casing 1510, a microneedle device attachment portion 1520, a bent portion 1550 that bends the microneedle device in the thickness direction, a liner winding portion 1530, and guides 1540 and 1560. .
- the microneedle device 600g is attached to the auxiliary tool 1500 so as to be movable along the bent portion 1550, thereby forming a microneedle device system.
- the user moves the microneedle device system in the direction of the arrow while pressing it against the skin S.
- the microneedle device 600b moves along the bent portion 1550 and is bent in the thickness direction at the bent portion 1550, and the microneedle 118 in the skin puncture region 120 of the sheet-like microneedle 100 becomes the skin of the sheet-like microneedle 100.
- the microneedle 118 rising from the contact surface 113 punctures the skin S.
- the sheet-like microneedle 100 is fixed on the skin S by the adhesive layer 610. That is, in the present embodiment, the force that moves the auxiliary tool 1500 corresponds to the force F1 described above. Further, the liner 650 peeled from the microneedle device 600 g is wound around the liner winding portion 1530.
- the adhesive layer is not laminated on the skin puncture region 120 on the back surface 115 of the sheet-like microneedle 100. For this reason, the rise of the microneedle 118 is good.
- microneedle device of any embodiment can be used instead of the microneedle device 600g.
- the microneedle device system of this embodiment can easily apply the microneedle device to the skin. Further, by adjusting the moving distance of the microneedle device system, the amount of microneedle device applied (area of the microneedle device applied to the skin) can be easily adjusted.
- FIG. 25 is a perspective view showing an embodiment of a microneedle device system.
- the microneedle device system of the present embodiment further includes a member A in the microneedle device system of the first embodiment described above.
- FIG. 26 is a perspective view showing the structure of member A.
- the member A includes a columnar part 100A and a support part 110A that supports both ends of the columnar part 100A.
- the member A is arranged so that the cylindrical portion 100A is in contact with the back surface 115 side of the sheet-like microneedle 100 at the portion where the microneedle device is bent.
- the end of the support portion 110 ⁇ / b> A opposite to the columnar portion 100 ⁇ / b> A is passed from the surface 718 side to the surface 715 side of the through hole 713 of the auxiliary tool 700.
- FIG. 27A is a cross-sectional view showing a state where the microneedle device system of the present embodiment is fixed on the skin S.
- FIG. 27A a longitudinal sectional view of the auxiliary tool 700 is shown.
- FIG. 27B is an enlarged view of a region r in FIG. 27A.
- the auxiliary tool 700 is fixed on the skin S by the adhesive layer 720, and the sheet-like microneedle 100 is passed through the through hole 712 from the surface 715 side to the surface 718 side, The skin S is bent in the thickness direction. Further, the cylindrical portion 100A of the member A is disposed in contact with the bent portion of the microneedle device.
- a portion of the substrate 710 closer to the through hole 713 than the through hole 712 functions as a bent portion that bends the microneedle device 600d in the thickness direction. Further, it can be said that the cylindrical portion 100A of the member A also functions as a bent portion that bends the microneedle device 600d in the thickness direction.
- the sheet-like microneedle 100 is guided by the liner 650, passes through the through-hole 712, and enters the space between the skin S and the substrate 710 of the auxiliary tool 700.
- the sheet-like microneedle 100 is bent 180 degrees in this space, and the microneedle 118 located in the bent portion is skin contact surface 113 as in the case of the microneedle device system of the first embodiment described above.
- microneedle device can also be applied to the skin without using an assistive tool, as will be described below.
- FIG. 19 is a perspective view showing the structure of the microneedle device 600d.
- FIG. 20A is a schematic diagram illustrating stepwise application of the microneedle device 600d, and FIG. 20B illustrates the sheet-like microneedle 100 at each stage of FIG. It is shown in a sectional view in the direction.
- the user peels off one end of the liner 650 on the skin contact surface 113 side to expose a part of the region 622 of the pressure-sensitive adhesive layer 620, and attaches this exposed portion to the skin S. Subsequently, the user gradually removes the liner 650 on the skin contact surface 113 side so that the sheet-like microneedle 100 bends at an acute angle, and then removes the region 622 of the adhesive layer 620 to which the sheet-like microneedle 100 is fixed. Affix to skin S.
- the microneedles 118 positioned at the bent portion of the sheet-like microneedle 100 rise from the skin contact surface 113 of the sheet-like microneedle 100 one by one, and the raised microneedles 118 pierce the skin S one after another.
- the user can administer a desired amount of drug by adjusting the application area of the sheet-like microneedle 100.
- the adhesive layer is not laminated on the skin puncture region 120 on the back surface 115 of the sheet-like microneedle 100. For this reason, when the sheet-like microneedle 100 is bent in the thickness direction, the microneedle 118 rises well, and the skin can be punctured efficiently. Further, the microneedle device 600 d can be fixed on the skin S by the region 622 of the pressure-sensitive adhesive layer 620. Moreover, when the adhesive layer 620 contains a drug, the drug can be efficiently administered to a living body through the skin punctured by the microneedle 118.
- Triangular microneedles were formed on a stainless steel sheet having a thickness of 5 ⁇ m in the arrangement shown in FIG. 1 to obtain sheet-like microneedles.
- the length of each microneedle was 500 ⁇ m, and the angle of the tip of the microneedle was 45 degrees.
- a pressure-sensitive adhesive layer was laminated so as to protrude from the sheet-like microneedle on the back surface of the sheet-like microneedle except the skin puncture region. Subsequently, liners were respectively attached to the outer surfaces of the sheet-like microneedles on the skin contact surface side and the back surface side to produce a microneedle device system as shown in FIG.
- Example 2 A microneedle device system of Example 2 was obtained in the same manner as Example 1 except that a stainless steel sheet having a thickness of 10 ⁇ m was used.
- Example 3 A microneedle device system of Example 3 was obtained in the same manner as Example 2 except that the angle of the tip of the microneedle was 25 degrees.
- the pressure-sensitive adhesive layer of the auxiliary tool was attached to a transparent acrylic plate. Subsequently, while pinching the end of the liner to which the sheet-like microneedles are attached and pulling in the direction indicated by the arrow in FIG. 16A, the adhesive layer that is folded and exposed is applied to the acrylic plate, and the opposite of the acrylic plate The rise of the microneedle was evaluated from the direction.
- microneedle device system provided with a sheet-like microneedle and improved in the start-up of the microneedle.
- DESCRIPTION OF SYMBOLS 100 Sheet-like microneedle, 110 ... Sheet
- auxiliary tool 710 ... substrate, 712, 713 ... through-hole, 715, 718 ... surface, 1510 ... housing, 1520 ... microneedle device attachment part, 1550 ... bent portion, 1530 ... liner take-up portion, 15 0,1560 ... guide, F1, F2, F3, F4 ... force, D ... distance, S ... skin, P ... inflection point, A ... member, 100A ... cylindrical portion, 110A ... support.
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Abstract
Description
(1)片面が皮膚接触面であり、他方面が裏面であり、一部が皮膚穿刺領域であるシートの面に略沿って複数のマイクロニードルが形成され、前記シートが厚さ方向に屈曲されると前記皮膚穿刺領域における前記マイクロニードルが前記皮膚接触面から皮膚に穿刺可能に立ち上がる、シート状マイクロニードルと、前記シート状マイクロニードルに設けられた粘着剤層と、前記粘着剤層に剥離可能に取り付けられたライナーと、を有するマイクロニードルデバイスと、前記マイクロニードルデバイスを厚さ方向に屈曲させる屈曲部を有し、前記屈曲部に沿って移動可能に前記マイクロニードルデバイスが装着される補助具と、を備えるマイクロニードルデバイスシステム。
(2)前記粘着剤層は、前記シートにおいて、前記皮膚穿刺領域の前記裏面を除く部位に設けられている、(1)に記載のマイクロニードルデバイスシステム。
なお、本明細書において、皮膚穿刺領域とは、シート状マイクロニードル上の領域であって、実際に皮膚を穿刺するマイクロニードルが存在する領域を意味する。
まず、シート状マイクロニードルについて説明する。図1は、シート状マイクロニードルの一実施形態を示す斜視図である。シート状マイクロニードル100は、片面が皮膚接触面113であり、他方面が裏面115であるシート110を備える。シート110には、シート110の面に略沿って複数のマイクロニードル118が形成されている。
続いて、マイクロニードルデバイスの実施形態について説明する。しかしながら、マイクロニードルデバイスは、以下の実施形態に限られるものではなく、種々の変更が可能である。
図2A~Cは、マイクロニードルデバイスの第1実施形態を示す断面図である。図2Aでは、マイクロニードルデバイス600aが備えるシート状マイクロニードル100の幅方向の断面を含む断面が示されている。
粘着剤層を構成する粘着基材としては、特に制限されず、スチレン系ブロック共重合体、天然ゴム、ポリイソブチレン樹脂、ポリイソプレン樹脂、シリコーン樹脂及び(メタ)アクリル酸エステル共重合体等が挙げられる。
本実施形態のマイクロニードルデバイスにおいて、シート状マイクロニードルは薬物送達用であってもよい。薬物は、粘着剤層に含有させてもよく、シート状マイクロニードルの材質自体に含有させてもよい。あるいは、シート状マイクロニードルの表面又は空隙等に、塗布・印刷、埋め込み、積層等によって薬物を担持させてもよく、シート状マイクロニードルの皮膚への適用前、又は適用後に、適用部位に直接薬物を塗布してもよい。あるいは、薬物の貯蔵槽(薬物含有部)を別途に設けてもよい。薬物の貯蔵層としては、例えば、後述する第6実施形態のマイクロニードルデバイス600fにおける粘着剤層630等が挙げられる。
ライナーの材質としては、特に制限されず、金属;ポリエチレンテレフタレート(PET)等のポリエステル;エチレン酢酸ビニルコポリマー(EVA)、ポリウレタン(PU)、ポリエチレン(PE)、ポリプロピレン(PP)等のポリオレフィン;ポリエーテルスルホン(PES)、ポリカーボネート(PC)、ポリスチレン(PS)、テフロン(登録商標)、(メタ)アクリル酸エステル樹脂等の樹脂;エラストマー類等が挙げられる。なお、本明細書において(メタ)アクリル酸は、メタクリル酸又はアクリル酸を意味する。
後述するように、マイクロニードルデバイスは支持体を備えていてもよい。支持体の材質としては、特に制限されず、金属;ポリエチレンテレフタレート(PET)等のポリエステル;エチレン酢酸ビニルコポリマー(EVA)、ポリウレタン(PU)、ポリエチレン(PE)、ポリプロピレン(PP)等のポリオレフィン;ポリエーテルスルホン(PES)、ポリカーボネート(PC)、ポリスチレン(PS)、テフロン(登録商標)、(メタ)アクリル酸エステル樹脂等の樹脂;エラストマー類等が挙げられる。
図4は、マイクロニードルデバイスの第2実施形態を示す断面図である。図4では、マイクロニードルデバイス600bが備えるシート状マイクロニードル100の幅方向の断面を含む断面が示されている。
残った支持体660は、マイクロニードルデバイス600b’を保護することができる。
また、マイクロニードル118がシート状マイクロニードル100の皮膚接触面113から立ち上がり、皮膚Sを穿刺している。また、粘着剤層610により、マイクロニードルデバイス600b’を皮膚S上に固定することができる。
図6は、マイクロニードルデバイスの第3実施形態を示す断面図である。図6では、マイクロニードルデバイス600cが備えるシート状マイクロニードル100の幅方向の断面を含む断面が示されている。
残った支持体660は、マイクロニードルデバイス600c’を保護することができる。
また、マイクロニードル118がシート状マイクロニードル100の皮膚接触面113から立ち上がり、皮膚Sを穿刺している。また、粘着剤層610により、マイクロニードルデバイス600c’を皮膚S上に固定することができる。
図8は、マイクロニードルデバイスの第4実施形態を示す断面図である。図8では、マイクロニードルデバイス600dが備えるシート状マイクロニードル100の幅方向の断面を含む断面が示されている。
すなわち、皮膚接触面113側のライナー650は、マイクロニードル立ち上げ用ライナーであるともいえる。粘着剤層、薬物、ライナー及び支持体の材質については、上述したものと同様である。本実施形態のマイクロニードルデバイスは、構造が単純であるため、容易に製造することができる。
残った支持体660は、マイクロニードルデバイス600d’を保護することができる。
また、マイクロニードル118がシート状マイクロニードル100の皮膚接触面113から立ち上がり、皮膚Sを穿刺している。また、粘着剤層620の領域622により、マイクロニードルデバイス600d’を皮膚S上に固定することができる。
図10は、マイクロニードルデバイスの第5実施形態を示す断面図である。図10では、マイクロニードルデバイス600eが備えるシート状マイクロニードル100の幅方向の断面を含む断面が示されている。本実施形態のマイクロニードルデバイスは、上述した第2実施形態及び第4実施形態のマイクロニードルデバイスを組み合わせたものである。
図12は、マイクロニードルデバイスの第6実施形態を示す断面図である。図12では、マイクロニードルデバイス600fが備えるシート状マイクロニードル100の幅方向の断面を含む断面が示されている。
粘着剤層620は、シート状マイクロニードル100よりも外側まで延びた領域622を有しており、この領域の粘着力によってマイクロニードルデバイスを皮膚に固定することができる。また、粘着剤層630の粘着力はマイクロニードル118の立ち上がりを阻害しない程度の弱さに調整されている。また、粘着剤層620又は粘着剤層630は薬物を含有していてもよい。
図21は、マイクロニードルデバイス600hの構造を示す断面図である。マイクロニードルデバイス600hは、上述したマイクロニードルデバイス600dのうち、裏面115における皮膚穿刺領域120に支持体660を有しないものである。すなわち、マイクロニードルデバイス600hにおいて、支持体660は、粘着剤層620の面623上に配置されている。粘着剤層、薬物、ライナー及び支持体の材質については上述したものと同様である。
図23は、マイクロニードルデバイス600iの構造を示す断面図である。マイクロニードルデバイス600iは、上述したマイクロニードルデバイス600dにおいて、支持体660の代わりにライナー650を配置した構造を有している。すなわち、シート状マイクロニードル100の裏面115上、粘着剤層620の面623上にライナー650が配置されており、皮膚接触面113上及び粘着剤層620の領域622上にもライナー650が取り付けられている。粘着剤層、薬物、ライナー及び支持体の材質については上述したものと同様である。
上述したマイクロニードルデバイスの各実施形態は適宜組み合わせてもよい。例えば、マイクロニードルデバイス600b、600c、600e等においても、マイクロニードルデバイス600h、600iと同様に、支持体660の一部又は全部を有しない構造としてもよい。
[第1実施形態]
一実施形態において、本発明は、片面が皮膚接触面であり、他方面が裏面であり、一部が皮膚穿刺領域であるシートの面に略沿って複数のマイクロニードルが形成され、前記シートが厚さ方向に屈曲されると前記皮膚穿刺領域における前記マイクロニードルが前記皮膚接触面から皮膚に穿刺可能に立ち上がる、シート状マイクロニードルと、前記シート状マイクロニードルに設けられた粘着剤層と、前記粘着剤層に剥離可能に取り付けられたライナーと、を有するマイクロニードルデバイスと、前記マイクロニードルデバイスを厚さ方向に屈曲させる屈曲部を有し、前記屈曲部に沿って移動可能に前記マイクロニードルデバイスが装着される補助具と、を備えるマイクロニードルデバイスシステムを提供する。
図18は、マイクロニードルデバイスシステムの別の実施形態を示す断面図である。本実施形態のマイクロニードルデバイスシステムは、補助具1500と、ロール状に巻かれたマイクロニードルデバイス600gとを備えている。マイクロニードルデバイス600gは、上述したマイクロニードルデバイス600bにおいて、ライナー650を除去し、更に、支持体660の代わりにライナー650を剥離可能に取り付けた構成を備えるものである。
図25は、マイクロニードルデバイスシステムの一実施形態を示す斜視図である。本実施形態のマイクロニードルデバイスシステムは、上述した第1実施形態のマイクロニードルデバイスシステムにおいて、部材Aを更に備えるものである。
マイクロニードルデバイスは、以下に説明するように、補助具を用いずに皮膚に適用することもできる。
厚さ5μmのステンレス製のシートに、図1に示すような配置で三角形のマイクロニードルを形成し、シート状マイクロニードルを得た。各マイクロニードルの長さは500μmとし、マイクロニードルの先端の角度は45度とした。このシート状マイクロニードルの裏面の皮膚穿刺領域を除く部分に、シート状マイクロニードルからはみ出すように粘着剤層を積層した。続いて、シート状マイクロニードルの皮膚接触面側及び裏面側の外面にそれぞれライナーを取り付け、図15に示すようなマイクロニードルデバイスシステムを作製し、実施例1のマイクロニードルデバイスシステムとした。
厚さ10μmのステンレス製のシートを用いた以外は、実施例1と同様にして、実施例2のマイクロニードルデバイスシステムを得た。
マイクロニードルの先端の角度を25度にした以外は、実施例2と同様にして、実施例3のマイクロニードルデバイスシステムを得た。
図16Aにおける皮膚Sの代わりに透明なアクリル板を用いて、図16Aと同様にしてアクリル板に実施例1~3のマイクロニードルデバイスシステムを適用し、マイクロニードルが立ち上がる様子を観察した。
Claims (2)
- 片面が皮膚接触面であり、他方面が裏面であり、一部が皮膚穿刺領域であるシートの面に略沿って複数のマイクロニードルが形成され、前記シートが厚さ方向に屈曲されると前記皮膚穿刺領域における前記マイクロニードルが前記皮膚接触面から皮膚に穿刺可能に立ち上がる、シート状マイクロニードルと、
前記シート状マイクロニードルに設けられた粘着剤層と、
前記粘着剤層に剥離可能に取り付けられたライナーと、
を有するマイクロニードルデバイスと、
前記マイクロニードルデバイスを厚さ方向に屈曲させる屈曲部を有し、前記屈曲部に沿って移動可能に前記マイクロニードルデバイスが装着される補助具と、
を備えるマイクロニードルデバイスシステム。 - 前記粘着剤層は、前記シートにおいて、前記皮膚穿刺領域の前記裏面を除く部位に設けられている、
請求項1に記載のマイクロニードルデバイスシステム。
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CN106999702B (zh) | 2020-07-10 |
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TWI679997B (zh) | 2019-12-21 |
JP6571680B2 (ja) | 2019-09-04 |
JPWO2016088886A1 (ja) | 2017-09-14 |
US20170333690A1 (en) | 2017-11-23 |
EP3216484A4 (en) | 2018-07-25 |
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