WO2022211058A1 - マイクロニードル構造体の製造方法およびマイクロニードル構造体 - Google Patents
マイクロニードル構造体の製造方法およびマイクロニードル構造体 Download PDFInfo
- Publication number
- WO2022211058A1 WO2022211058A1 PCT/JP2022/016675 JP2022016675W WO2022211058A1 WO 2022211058 A1 WO2022211058 A1 WO 2022211058A1 JP 2022016675 W JP2022016675 W JP 2022016675W WO 2022211058 A1 WO2022211058 A1 WO 2022211058A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- needle
- microneedle structure
- base material
- producing
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 108
- 239000002195 soluble material Substances 0.000 claims abstract description 90
- 239000002198 insoluble material Substances 0.000 claims abstract description 83
- 239000007788 liquid Substances 0.000 claims abstract description 69
- 239000000203 mixture Substances 0.000 claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000035699 permeability Effects 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 80
- 239000002904 solvent Substances 0.000 claims description 22
- 210000001124 body fluid Anatomy 0.000 claims description 16
- 239000010839 body fluid Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 8
- 239000013543 active substance Substances 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 229920005989 resin Polymers 0.000 description 27
- 239000011347 resin Substances 0.000 description 27
- 238000010438 heat treatment Methods 0.000 description 18
- 238000002844 melting Methods 0.000 description 16
- 230000008018 melting Effects 0.000 description 16
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- 229920006167 biodegradable resin Polymers 0.000 description 10
- 239000003960 organic solvent Substances 0.000 description 10
- 239000003814 drug Substances 0.000 description 9
- 229940079593 drug Drugs 0.000 description 9
- 239000012790 adhesive layer Substances 0.000 description 8
- 210000004369 blood Anatomy 0.000 description 8
- 239000008280 blood Substances 0.000 description 8
- 238000007872 degassing Methods 0.000 description 6
- -1 polybutylene succinate Polymers 0.000 description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 5
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 210000003722 extracellular fluid Anatomy 0.000 description 5
- 239000008103 glucose Substances 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 239000008247 solid mixture Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 229920001610 polycaprolactone Polymers 0.000 description 4
- 239000004632 polycaprolactone Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000001647 drug administration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000009210 therapy by ultrasound Methods 0.000 description 3
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 238000012377 drug delivery Methods 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- XNLICIUVMPYHGG-UHFFFAOYSA-N pentan-2-one Chemical compound CCCC(C)=O XNLICIUVMPYHGG-UHFFFAOYSA-N 0.000 description 2
- 229920000747 poly(lactic acid) Polymers 0.000 description 2
- 239000004626 polylactic acid Substances 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004506 ultrasonic cleaning Methods 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920000954 Polyglycolide Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 210000002751 lymph Anatomy 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000013335 mesoporous material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010446 mirabilite Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920002961 polybutylene succinate Polymers 0.000 description 1
- 239000004631 polybutylene succinate Substances 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004633 polyglycolic acid Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14503—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14507—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue specially adapted for measuring characteristics of body fluids other than blood
- A61B5/1451—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue specially adapted for measuring characteristics of body fluids other than blood for interstitial fluid
- A61B5/14514—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue specially adapted for measuring characteristics of body fluids other than blood for interstitial fluid using means for aiding extraction of interstitial fluid, e.g. microneedles or suction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150969—Low-profile devices which resemble patches or plasters, e.g. also allowing collection of blood samples for testing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/685—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
-
- 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
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/12—Manufacturing methods specially adapted for producing sensors for in-vivo measurements
-
- 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
- A61M2037/0053—Methods for producing microneedles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2207/00—Methods of manufacture, assembly or production
Definitions
- the present invention relates to a method for manufacturing a microneedle structure and a microneedle structure.
- the height is 20 ⁇ m or more and less than 500 ⁇ m
- the aspect ratio (h/a) of the height h and the maximum length a of the base is 2 or more and composed of a mesoporous material is known (Patent Document 1).
- a small microneedle with a length of less than 1 mm is inserted into the patient's skin to collect blood, and an analysis patch that analyzes this blood with less burden on the body is developed.
- an analysis patch that analyzes this blood with less burden on the body is developed.
- a base plate having a microchannel formed thereon is used as a base material, and a viscous patch for forming a needle-like portion is formed on the base plate. It discloses that the material is gently expelled from a dispenser to form a plurality of needles.
- the needle-shaped part is pierced into the patient, blood is continuously collected from the needle-shaped part by capillary action from the capillary pump part of the microchannel provided on the base plate, and the collected blood is a reaction chamber provided on the base plate. I am measuring with a sensor in
- the base plate used in the above test patch requires the formation of a fine capillary pump section and microchannels in the plate. It is requested to produce. Moreover, even if the test patch or the like is manufactured by a simple method, the shape of the needle-like portion must be able to be formed as intended, and the flow path must be ensured.
- the present invention has been made in view of such circumstances, and provides a microneedle structure that can easily obtain a microneedle structure in which a flow path is secured, and a method for manufacturing the microneedle structure. for the purpose.
- the present invention provides a method for producing a microneedle structure having a needle-like portion having a hole on one side of a liquid-permeable base material in the thickness direction.
- the base material having liquid permeability in the thickness direction is a porous base material
- the bonding step includes the projections formed in the forming step and the second
- the step of adhering the water-soluble material and the sheet containing the porous substrate, and the removing step be a step of dissolving and removing the first water-soluble material and the second water-soluble material.
- the porous base material contains the second water-soluble material
- the base material is prevented from absorbing the composition of the protrusions. can.
- excessive voids are not formed in the protrusion, that is, in the needle-like portion, particularly in the root portion, so that the needle-like portion is suppressed from collapsing, and the needle has a shape suitable for bonding with the base material serving as the flow path.
- a microneedle structure can be produced in which the needle-like portion can be formed and the needle-like portion and the substrate are well adhered to each other.
- the porous base material is a base material made of a fibrous substance (invention 3).
- the sheet contains a second water-insoluble material (invention 4).
- the first water-insoluble material and the second water-insoluble material are the same (invention 5).
- the sheet is obtained by impregnating the base material with a second water-soluble material (invention 6).
- the substrate made of the fibrous substance is nonwoven fabric, woven fabric, knitted fabric or paper (invention 7).
- the substrate is made of a liquid-impermeable material and has through holes formed in the thickness direction (Invention 8).
- the liquid impermeability of the base material can suppress liquid absorption by the base material, the liquid can pass only through the through-holes formed in the thickness direction of the base material. Therefore, the body fluid obtained from the needle-like portion or the drug solution transported to the needle-like portion does not seep into the base material, and the entire amount can be circulated through the through-hole. Then, in order to form holes in the protrusions in the removal step after bonding the substrate and the composition or the protrusions formed in the formation step, the holes in the protrusions and the through holes in the substrate are formed. are easily connected, and a channel is easily formed in the microneedle structure.
- invention 9 it is preferable to include a filling step of filling the needle-like portion-forming composition into a mold having recesses.
- the composition for forming the needle-shaped portion contains a solvent, and in the formation step, the solvent is evaporated (invention 10).
- invention 11 a step of providing a body fluid analysis means and/or a physiologically active substance storage means on the side opposite to the side of the base material provided with the needle-like portion is provided.
- the present invention is a microneedle structure having a needle-like portion having a hole on one side of a porous substrate, the needle-like portion being made of a first water-insoluble material, Also provided is a microneedle structure directly provided on the porous substrate, wherein the porous substrate contains a second water-insoluble material (Invention 12).
- the method for producing a microneedle structure of the present invention it is possible to easily obtain a needle-like portion in which a flow path is ensured, and the needle-like portion is formed in a desired shape, and It is possible to provide a microneedle structure with good bonding to the channel.
- FIG. 1 is a schematic partial cross-sectional view of a microneedle structure of the present invention
- FIG. 1 is a cross-sectional view of a test patch using the microneedle structure of the present invention
- FIG. 1 shows a microneedle structure 10 according to one embodiment of the invention.
- the microneedle structure 10 includes a plurality of needle-like portions 12 spaced apart from each other at predetermined intervals on one side of a substrate 11 .
- the microneedle structure 10 absorbs interstitial fluid from the skin through the needle-like portion 12 and is used as a test patch for performing an inspection using the obtained interstitial fluid, or from the substrate 11 through the needle-like portion 12. It can be used as a drug administration patch for administering a drug into the body through the skin.
- Needle-like portion The shape, size, forming pitch, and number of forming needle-like portions 12 can be appropriately selected depending on the intended use of the microneedles.
- Examples of the shape of the needle-like portion 12 include columnar, prismatic, conical, and pyramidal shapes, and in this embodiment, it is pyramidal.
- the maximum diameter or maximum cross-sectional dimension of the needle-like portion 12 is, for example, 25 to 1000 ⁇ m, and the tip diameter or cross-sectional dimension of the tip is 1 to 100 ⁇ m.
- the height is, for example, 50 to 2000 ⁇ m.
- the needle-like portions 12 are arranged in a plurality of rows in one direction of the substrate 11, and arranged in a matrix by forming a plurality of needle-like portions 12 in each row.
- the needle-like portion 12 is made of a first water-insoluble material that is insoluble in the water contained in the cleaning liquid used in the removal step described later.
- the first water-insoluble material is preferably a water-insoluble resin.
- the water-insoluble resin is preferably a water-insoluble resin having a melting point higher than room temperature and 250°C or lower, more preferably a water-insoluble resin having a melting point higher than 40°C and 200°C or lower, and having a melting point higher than 45°C.
- a water-insoluble resin having a melting point of 150° C. or lower is particularly preferred, and a water-insoluble resin having a melting point of higher than 45° C. and lower than 80° C. is particularly preferred.
- the water-insoluble resin becomes solid at room temperature and can form the needle-like portion 12.
- the melting point is lower than 150°C, the material can be used as a base material. As the degree of freedom increases, workability also improves.
- such a water-insoluble resin is preferably a water-insoluble biodegradable resin that is less likely to affect the human body.
- the biodegradable resin aliphatic polyesters and derivatives thereof are preferably used, and from the group consisting of polylactic acid, polyglycolic acid, polycaprolactone, and copolymers obtained by copolymerizing the monomers constituting them. At least one selected is included.
- Biodegradable resins such as polybutylene succinate, aliphatic-aromatic copolyesters, and polyhydroxybutyric acid may also be used. A mixture of two or more of these biodegradable resins may also be used.
- the first water-insoluble material is polycaprolactone, which is a biodegradable resin having a melting point of 60°C, or a copolymer of caprolactone and other monomers constituting biodegradable resins.
- the molecular weight of the water-insoluble resin is generally 5,000-300,000, preferably 7,000-200,000, more preferably 8,000-150,000.
- a hole 13 is formed on the surface and inside of each needle-like portion 12 .
- the hole 13 is formed by removing the first water-soluble material in a removing step described later, and the body fluid and the chemical liquid pass through the hole 13 .
- the hole portion 13 is formed in the needle-like portion 12 as a porous structure. If the needle-like portion 12 is formed to have a porous structure, a channel through which the body fluid or the drug solution passes is relatively formed as the hole portion 13, so that the nano-order channel can be mechanically formed. Not necessary and preferred.
- body fluids or medicinal fluids can pass through the whole portion of the needle-like structure where the porous structure is formed, it is possible to increase the amount of circulation compared to a simple communicating hole.
- the needle-like portion 12 is formed to have a porous structure in this way, if the porous structure is not covered on part or all of the side surface of the needle-like portion, the side surface of the needle-like portion 12 is also porous. Part 13 opens. In this case, the flow rate of the liquid can be increased as compared with the case where only the distal end portion of the needle-like portion 12 is opened.
- the holes 13 extend to the substrate 11 side depending on the formed holes 13 .
- the size of the opening of the hole 13 is determined by the application such as a test patch using the microneedle structure 10, but from the viewpoint of facilitating the passage of liquid, the size of the opening is 0.1 to 50. It is preferably 0.0 ⁇ m, more preferably 0.5 to 25.0 ⁇ m, even more preferably 1.0 to 10.0 ⁇ m.
- body fluid includes blood, lymph, interstitial fluid, and the like.
- the substrate 11 is not particularly limited as long as it has liquid permeability in the thickness direction.
- the base material 11 is preferably a porous material in which minute base material holes penetrating from one side to the other side are formed.
- known substrates can be used.
- Porous substrate 11 is typically formed from a material that is insoluble or sparingly soluble in water.
- a substrate made of a fibrous material that is easy to handle is preferred.
- the fibrous substance in the present invention means fibers such as natural fibers and chemical fibers. Substrates made of fibrous substances include nonwoven fabrics, woven fabrics, knitted fabrics, papers, and the like made of these fibers.
- the substrate hole of the porous substrate 11 communicates with the hole 13 of the needle-like portion 12 to form a communicating hole.
- the shape of the substrate hole is determined by the material of the substrate.
- the porosity of the porous substrate 11 due to the pores of the substrate is preferably 1 to 70%, more preferably 5 to 50%, and particularly preferably 10 to 30%. When the porosity is within this range, the bodily fluid absorbed by the needle-like portion 12 can be sufficiently absorbed.
- the porous substrate 11 preferably contains the second water-insoluble material, and the substrate pores are maintained even in the substrate 11 containing the second water-insoluble material.
- the needle-like portion 12 is directly adhered to the base material 11 .
- the base material 11 and the needle-like portion 12 are adhered by an adhesive layer or the like, a gap is generated between the base material 11 and the needle-like portion 12, and liquid leaks out.
- the passage of liquid between the material 11 and the needle-like portion 12 may be hindered, the direct bonding of the base material 11 and the needle-like portion 12 allows the channels of the two to be connected. is easy.
- the base material 11 itself is not made of a liquid-impermeable material, but is made of a liquid-impermeable material. It is also possible to adopt a structure that allows liquid to pass through the base material 11 in the thickness direction through through holes formed in the base material 11 . Since the liquid impermeability of the base material 11 can suppress liquid absorption by the base material 11 , the liquid can pass only through the through-holes in the base material 11 . Therefore, the body fluid obtained from the needle-like portion 12 or the drug solution transported to the needle-like portion 12 does not seep into the base material 11, and the entire amount can be circulated through the through-hole.
- microneedle structure 10 when used as a test patch, body fluid can immediately pass through the base material 11, enabling rapid analysis. Even when used as a drug administration patch, the entire amount of the drug solution can be rapidly supplied to the skin without the drug solution seeping out.
- the shape of the through-hole is not particularly limited, but a structure in which a plurality of small-diameter through-holes are provided is preferable from the viewpoint of ensuring a sufficient flow rate while causing capillary action.
- the diameter of the through-hole is, for example, 2 mm or less, preferably 0.05 to 1 mm, more preferably 0.1 to 0.8 mm.
- the through holes can be provided by punching or laser perforation.
- the base material 11 may be a laminated base material in which a resin film provided with through holes and a porous base material are laminated.
- the bonding step described later may be performed at room temperature, or the adhesion between the base material 11 and the needle-like portions 12 may be enhanced. can do.
- the adhesive layer due to the presence of the adhesive layer, a gap is generated between the base material 11 and the needle-like portion 12, and the liquid leaks out. There is concern that the passage of Therefore, it is preferable to provide an adhesive layer so as to surround the area through which the liquid should pass in the base material 11 and provide a non-adhesive layer formed area in the central portion.
- the needle-like portion 12 is formed in a desired shape, and the hole portion 13 of the needle-like portion 12 and the substrate hole portion of the substrate 11 are formed.
- the needles 12 and the substrate 11 are well bonded so that the channels have good liquid permeability.
- the microneedle structure 10 is used for a test patch 20 that absorbs bodily fluid from within the skin through the needle-shaped portion 12 and performs a test using the obtained bodily fluid.
- the test patch 20 has the microneedle structure 10, and the surface opposite to the surface on which the needle-like portion 12 of the base material 11 is provided (hereinafter sometimes referred to as "back surface"). ) side has an analysis sheet 21 and a tape 22 .
- the microneedle structure 10 can also be used as a drug administration patch for administering a drug from the base material 11 through the needle-like portion 12 into the body through the skin.
- a physiologically active substance-containing sheet is provided on the back side of the substrate 11 of the microneedle structure 10, and the physiologically active substance from the physiologically active substance-containing sheet enters the skin via the substrate 11 and the needle-like portion 12.
- the drug delivery patch is constructed so that it can be administered to the
- the analysis sheet 21 is for analyzing body fluids such as subcutaneous blood and interstitial fluid for examination, and is installed on the back side of the base material 11 .
- body fluids such as subcutaneous blood and interstitial fluid for examination
- the analysis sheet 21 can be appropriately selected according to the desired inspection contents, and can be formed by incorporating a component as an analysis means into a base material such as paper.
- a glucose measuring paper that changes color according to the glucose concentration in the body fluid.
- the analysis sheet 21 absorbs the interstitial fluid sampled by the microneedle structure 10 and changes color, and the blood glucose level is measured over time based on the degree of this color change. It can be used as a test patch 20 for value measurement.
- the tape 22 is made of a material having biosafety, and is preferably made of a material having flexibility, elasticity, and shrinkage in consideration of the ability to follow the skin when it is applied, but is limited to such materials. not a thing
- a preferred material for the tape 22 is a stretchable woven fabric, and conventionally known materials can be used.
- FIG. 3 shows a method of manufacturing a microneedle structure 10 according to one embodiment of the present invention.
- a liquid composition 3 is filled into a mold 2 having a plurality of recesses 1 (filling step).
- the recess 1 is filled with the filled liquid composition 3 .
- the material of the mold 2 is not particularly limited. Composed of siloxane.
- the concave portion 1 is for forming the needle-like portion 12 shown in FIG. 1, and is configured so that the needle-like portion 12 having a desired shape can be formed.
- a plurality of recesses 1 are provided at predetermined positions in a plurality of rows at intervals.
- the liquid composition 3 includes the first water-insoluble material (schematically indicated by light gray circles in FIG. 3(a)) and the first water-soluble material (shown in FIG. 3(a)) that is soluble in water. (schematically indicated by dark gray circles) and solvent.
- each material is schematically shown in the form of particles, showing a state in which they are dispersed in a solvent.
- At least one of the first water-insoluble material and the first water-soluble material (the composition for forming the needle-like portion) is dissolved in the solvent in the liquid composition 3, and the needle-like portion 12 has a porous structure. From the viewpoint of facilitating formation, it is preferable that at least the first water-insoluble material is dissolved.
- the liquid composition 3 preferably has a viscosity of 0.1 to 1000 mPa ⁇ s, more preferably 0.5 to 100 mPa ⁇ s, and particularly preferably 1.0 to 10 mPa ⁇ s. Within this range, the liquid composition 3 can be injected into the mold 2 with good workability, and the filling of the composition into the concave portions 1 in the filling step is also good, so that the desired needle-like portions 12 can be formed.
- a water-soluble material with a melting point higher than room temperature is preferable as the first water-soluble material.
- the water-soluble material may be organic or inorganic, and includes sodium chloride, potassium chloride, mirabilite, sodium carbonate, potassium nitrate, alum, sugar, water-soluble resin, and the like.
- a water-soluble thermoplastic resin is preferable, and one having a melting point higher than room temperature is preferable.
- water-soluble thermoplastic resins include biodegradable resins described later, as well as hydroxypropyl cellulose and polyvinylpyrrolidone.
- the water-soluble thermoplastic resin is more preferably a biodegradable resin in consideration of the effects on the human body.
- Such biodegradable resins include at least one selected from the group consisting of polyolefin glycols such as polyethylene glycol and polypropylene glycol, polyvinyl alcohol, collagen and mixtures thereof, with polyethylene glycol being particularly preferred.
- the molecular weight of polyethylene glycol is, for example, preferably 200 to 4,000,000, more preferably 600 to 500,000, particularly preferably 1,000 to 100,000.
- the first water-insoluble material and the first water-soluble material are preferably mixed at a weight ratio of 9:1 to 1:9, more preferably 8:2 to 2:8, and 7: A mixture of 3 to 3:7 is particularly preferred.
- the needle-like portion 12 having a desired porosity is formed, and it becomes easy to achieve both liquid permeability and strength of the needle-like portion 12 .
- the liquid composition 3 contains a solvent in order to make it liquid while containing each material.
- the solvent may be water or an organic solvent, but when the first water-insoluble material is to be dissolved, the liquid composition 3 preferably contains an organic solvent.
- the organic solvent may be any organic solvent that can dissolve or disperse the first water-insoluble material and the first water-soluble material described above, for example, aliphatic hydrocarbons such as hexane, heptane, and cyclohexane, toluene, xylene, and the like.
- aromatic hydrocarbons methylene chloride, halogenated hydrocarbons such as ethylene chloride, alcohols such as methanol, ethanol, propanol, butanol, 1-methoxy-2-propanol, acetone, methyl ethyl ketone, 2-pentanone, isophorone, cyclohexanone, etc.
- Ketones, esters such as ethyl acetate and butyl acetate, and cellosolve solvents such as ethyl cellosolve are used.
- the total content of the first water-insoluble material and the second water-insoluble material in all components of the liquid composition 3 is preferably 40% or less, more preferably 35% or less, based on mass, and 30 % or less is particularly preferred.
- the liquid composition 3 can be formed with a desired viscosity that facilitates the production of the needle-like portion 12 of the microneedle structure 10. , and as a result, it is possible to form the needle-like portion 12 in a desired shape.
- the liquid composition 3 may contain not only the first water-insoluble resin, which is the first water-insoluble material, and the first water-soluble material, but also other materials as non-volatile solids.
- the liquid composition 3 in which each material is dissolved or dispersed in a solvent is used.
- 3 may further comprise a dispersant.
- a water-insoluble material other than the resin such as silica filler, may be included.
- a vibrating step it is preferable to place the mold 2 in an ultrasonic cleaning apparatus and vibrate the mold 2 with ultrasonic waves.
- the means for applying vibration is not limited to an ultrasonic cleaning apparatus as long as it can apply fine vibration to the mold 2 .
- filling of the recess 1 with the liquid composition 3 is promoted as shown in FIG. is filled to every corner in the recess 1 .
- the needle-like portion 12 can be formed with high transferability according to the shape of the concave portion 1 without defects due to air bubbles, and the strength of the needle-like portion 12 is improved.
- Heating may be performed at the same time as performing the ultrasonic treatment as the vibration step. It is preferable to heat at a melting point (for example, 60° C. or higher) of at least one of the material and the first water-soluble material. By heating at this temperature, the surface solidification of the liquid composition 3 is suppressed, the evaporation and drying of the organic solvent are promoted, and the recesses 1 of the first water-insoluble material and the first water-soluble material in the liquid composition 3 filling is facilitated. In particular, by heating at 60° C. or higher, the evaporation and drying of the organic solvent are further promoted, and the filling of the first water-insoluble material and the first water-soluble material into the concave portions 1 is further promoted.
- a melting point for example, 60° C. or higher
- the frequency in the vibration process is preferably selected from a low frequency range that has a high filling promotion effect, preferably 10 to 200 kHz, more preferably 20 to 150 kHz, and particularly preferably 30 to 80 kHz.
- the time for ultrasonic treatment is preferably 0.5 to 10 minutes, more preferably 2 to 7 minutes.
- a deaeration step is preferably performed after the vibration step.
- the air contained in the recess 1 can be degassed, further promoting the filling of the recess 1 with the first water-insoluble material and the first water-soluble material, and promoting the evaporation and drying of the organic solvent. can do.
- the degassing step is preferably carried out at 0.01 to 0.05 MPa and 20 to 25° C. when ethyl acetate is used as a solvent, for example, as in Examples described later.
- Heating process After that, it is preferable to perform a heating step of heating at 80 to 120°C. Thereby, as shown in FIG. will be in a molten state, facilitating the filling of the first water-insoluble material and the first water-soluble material into the recess 1 .
- the heating process is performed after the degassing process, but the heating process may be performed first.
- the solvent evaporates and dries, and the first water-insoluble material and the first water-soluble material contained in the liquid composition 3 are sufficiently filled in the recess 1, and the protrusion 5 is formed in the recess 1.
- the sheet 4 is placed on the mold 2 as shown in FIG. 3(d).
- the needle-like portion 12 can have a desired shape. Adhesion between the portion 12 and the base material 11 is also good.
- the forming process of forming the protrusions 5 is performed by the filling process, followed by the vibrating process, the degassing process, and the heating process. Also, the vibration step and/or the degassing step may be omitted.
- the protrusions 5 may be formed without performing the heating step by drying the solvent at room temperature.
- the sheet 4 is obtained by incorporating a second water-soluble material that is soluble in water and a second water-insoluble material that is insoluble in water into the porous substrate 11 described above. Since the mold 2 has been heated in the preceding step, the first water-insoluble material and the first water-soluble material in the recesses 1 are in a molten state, and when the sheet 4 is placed, the melted first water-insoluble material in the recesses 1 Protrusions 5 made of a water-insoluble material and a first water-soluble material are directly adhered to the sheet 4 . In this case, since the sheet 4 contains the second water-insoluble material and the second water-soluble material, it is possible to prevent the substrate 11 from absorbing the melted composition in the recesses 1 .
- the microneedle structure 10 is provided with a porous base material 11 and is formed using a liquid material, excessive voids are not formed particularly in the base portion of the protrusion 5, so that the needle-like portion 12 is suppressed from collapsing. Therefore, the needle-like portion 12 having a shape suitable for adhesion to the substrate 11 can be formed, and the microneedle structure 10 with good adhesion between the needle-like portion 12 and the substrate 11 can be manufactured. .
- the sheet 4 contains not only the second water-soluble material but also the second water-insoluble material, the melted first water-insoluble material in the recesses 1 and the second water-insoluble material contained in the sheet 4 Adhesiveness between the sheet 4 and the projections 5 is further improved by heat-sealing.
- the materials listed for the first water-soluble material can be used. Furthermore, it is preferably a water-soluble resin, preferably a water-soluble thermoplastic resin, and more preferably a water-soluble biodegradable resin.
- the second water-soluble material is the same as the first water-soluble material. Since the second water-soluble material and the first water-soluble material are the same, it becomes easy to remove the second water-soluble material and the first water-soluble material in the subsequent removal step, and the desired hole of the needle-like portion 12 can be obtained. A portion 13 can be formed.
- the second water-insoluble material those listed for the first water-insoluble material can be used, but it is preferable that the second water-insoluble material is the same as the first water-insoluble material. Since the second water-insoluble material and the first water-insoluble material are the same, the heat-sealing between the second water-insoluble material and the first water-insoluble material is facilitated, and the adhesion between the protrusions 5 and the sheet 4 is improved. increases.
- a water-insoluble resin is preferable so that the porous base material 11 can be easily impregnated with the second water-soluble material, as will be described later.
- the water-insoluble resin is preferably a water-insoluble resin having a melting point higher than room temperature and 250°C or lower, more preferably a water-insoluble resin having a melting point higher than 40°C and 200°C or lower, and having a melting point higher than 45°C.
- a water-insoluble resin having a temperature of 150° C. or lower is particularly preferred.
- the resin used as the second water-insoluble material is also preferably biodegradable.
- the second water-soluble material and the second water-insoluble material may be contained in the sheet 4 in any way, but the sheet 4 is adhered to the protrusions 5 (needle-like portions 12) of the base material 11. At least the second water-soluble material should be contained so as not to absorb the first water-insoluble material and the first water-soluble material from the concave portion 1 from the surface side. That is, the sheet 4 contains at least the second water-soluble material, and the second water-soluble material blocks at least a part of the substrate pores of the porous substrate 11, thereby forming the first water-insoluble material and the second water-soluble material. It is sufficient that it is configured so as to be able to suppress absorption with a water-soluble material.
- a layer containing the second water-soluble material and the second water-insoluble material may be laminated on the surface of the porous base material 11 on the side to which the protrusions 5 are adhered.
- the porous substrate 11 is impregnated with a second water-soluble material and a second water-insoluble material.
- the porous substrate 11 is impregnated with a solution containing the second water-soluble material and the second water-insoluble material. It should be immersed inside.
- a solution containing the second water-soluble material and the second insoluble material may be applied to the porous substrate 11 by an inkjet method or the like.
- the solution comprising the second water-soluble material and the second water-insoluble material impregnated into the porous substrate 11 is dried to remove the second water-soluble material and the second water-insoluble material from the substrate pores of the substrate 11. Remaining in the part is a simple means of impregnation and is preferable.
- the solution may comprise a second water-soluble material and a second water-insoluble material, as well as a solvent.
- the total content concentration of the second water-soluble material and the second water-insoluble material in all components of the solution is preferably 1 to 35% by mass, more preferably 3 to 30%, and 5 to 25% is particularly preferred.
- the solution preferably contains the second water-soluble material and the second water-insoluble material in a weight ratio of 9:1 to 1:9. Within this range, the effect of restoring the substrate hole of the substrate 11 can be easily obtained in the removal step described later, and the adhesiveness between the substrate 11 and the needle-like portion 12 can be enhanced. Easy.
- the base material 11 When the porous base material 11 is immersed in the solution containing the second water-soluble material and the second water-insoluble material, for example, the base material 11 is immersed in the solution at 10 to 60° C. for 1 to 60 minutes, and then immersed in the solvent. is evaporated and dried to impregnate the substrate 11 with the second water-soluble material and the second water-insoluble material.
- the base material 11 when the base material 11 is composed of a fibrous material, it is possible to easily absorb and impregnate the second water-soluble material and the second water-insoluble material by immersing it in the solution. .
- the sheet 4 is configured to contain the second water-insoluble material in the present embodiment, it is not limited to this. Even if the sheet 4 does not contain the second water-insoluble material, since the mold 2 is heated, the first water-insoluble material and the first water-soluble material in the recesses 1 are in a molten state, and the sheet 4 is When placed, the protrusions 5 made of the melted first insoluble material and first water-soluble material in the recesses 1 adhere to the surface of the placed sheet 4 .
- the sheet 4 does not contain the second water-insoluble material, for example, the surface of the sheet 4 to be placed on the mold 2 is provided with some adhesive means, for example, an adhesive part using a known adhesive, so that the sheet Adhesion between 4 and projection 5 may be enhanced.
- a pressurizing step is performed to apply pressure to the sheet 4.
- a pressurizing method is not particularly limited, and a known method can be used.
- a heating step of heating at 60 to 120° C. may also be carried out at the same time.
- the adhesiveness can be further improved by performing a heating step at the same time. After that, by holding at a low temperature of ⁇ 10 to 3° C., the protrusions 5 in the recesses 1 are solidified and the adhesion between the protrusions 5 and the sheet 4 is completed.
- the bonding step of bonding the projections 5 and the sheet 4 is performed by the heating step, the subsequent pressing step, and the solidification of the projections 5 .
- the protrusions 5 and the sheet 4 may be adhered only by the heating process without performing the pressing process.
- the protrusions 5 and the sheet 4 may be bonded together by the above-described bonding means without involving the heating process and the pressing process.
- the bonding step between the composition for forming the needle-like portion and the substrate 11 cannot be performed prior to the forming step, and the bonding step is always performed after the forming step. Since 4 contains a water-soluble material, absorption of the needle-like portion-forming composition by the substrate 11 is suppressed, and needle-like portions having a desired shape can be obtained.
- the cleaning liquid in this removing process contains water, and the removing process is performed by, for example, leaving the adhered protrusions 5 and the sheet 4 still in the cleaning liquid.
- the portion communicating with the outside of the first water-soluble material and the second water-soluble material contained in the protrusions 5 and the sheet 4 dissolves and is submerged in water. flushed out and removed.
- the cleaning liquid may be a mixed solvent such as water and alcohol.
- a hole 13 is formed in the protrusion 5 as shown in FIG. Thereby, the microneedle structure 10 is obtained.
- the substrate holes of the substrate 11 blocked by the second water-soluble material are at least partially restored.
- the substrate 11 contains the second water-insoluble material and the substrate holes are restored.
- the second water-insoluble material remains in the base material 11 while the needle-like portion 12 is on the side of the base material 11 .
- the hole 13 extending to the base 11 is further connected to the substrate hole of the substrate 11 .
- the holes 13 connected to the base material holes constitute liquid flow paths. This makes it easier for the liquid to pass through the interface between the needle-like portion 12 and the substrate 11 in the microneedle structure 10 .
- the liquid composition 3 is filled in the concave portion 1 to form the needle-like portion 12, but the present invention is not limited to this.
- the liquid composition 3 is prepared with a high viscosity, and the highly viscous liquid composition 3 is dropped onto the porous substrate 11 using a dispenser or the like, thereby forming the needle-like portion 12. It may be based on the method of Even in this case, since the base material 11 contains at least the first water-soluble material, the liquid composition 3 is absorbed by the base material 11, and the needle-like portions 12 cannot obtain the desired shape. It is possible to suppress
- the recess 1 is filled with the liquid composition 3 containing the first water-insoluble material, the first water-soluble material that is soluble in water, and the solvent to form the needle-like portion 12 .
- a composition containing a first water-insoluble material and a first water-soluble material that is soluble in water and containing no solvent is melted and filled into the recesses 1 to form protrusions 5.
- You may Specifically, such a composition is first molded into a suitable shape (eg, disk-like) to produce a solid composition.
- An adhesive layer is provided on the sheet 4 in advance, and the adhesive layer of the sheet 4 and one surface of the solid composition are bonded together.
- the bonding step of bonding the composition before forming the needle-like portion 12 and the substrate 11 is performed at room temperature.
- the surface of the solid composition with a substrate opposite to the one surface on which the substrate is bonded is opposed to the recess 1, and the solid composition is heated and melted while the composition is placed in the recess 1. and then cooled to form the protrusions 5 .
- the adhesion area of the needle-like portion 12 to the base material 11 becomes small, which is disadvantageous for the adhesiveness therebetween.
- An analysis sheet 21 is arranged at a predetermined position on the back side of the base material 11 of the obtained microneedle structure 10 (installation step), and a tape 22 is laminated so as to cover the analysis sheet 21, thereby manufacturing a test patch. It is possible to A conventionally known method can be used as the lamination method.
- a test patch can be manufactured by laminating the adhesive tape 22 in which an adhesive layer such as an adhesive is formed on a tape base material. Drug delivery patches can also be manufactured by similar methods.
- the plurality of needle-like portions 12 are provided directly on the base material 11, but the needle-like portions 12 serve as the bases of the individual needle-like portions 12. It may have a base portion having a hole similarly to the individual needle-like portions 12, and the individual needle-like portions 12 may be provided on the substrate 11 via the base portion. In this case as well, if the base is made of the same material as the needle-like portion 12 or is formed by the same process, the needle-like portion 12 and the base material 11 are separated from each other through the base. good adhesion can be obtained.
- a base can be formed by providing a liquid reservoir such as by providing a wall on the surface of the mold 2 where the recess 1 is formed, and storing the liquid composition overflowing from the recess 1 in this reservoir.
- the sheet 4 in which the second water-soluble material that is soluble in water and the second water-insoluble material that is insoluble in water is contained in the porous base material 11 is used.
- a resin film provided with through holes may be adhered to the projecting portion 5 .
- the hole 13 of the needle-like portion 12 extending to the base material 11 side is further connected to the through hole of the base material 11. .
- the hole portion 13 connected to the through hole constitutes a liquid flow path.
- the liquid passes through the through-holes of the base material 11 from the needle-like parts 12 and reaches the surface of the base material 11 opposite to the surface on which the needle-like parts 12 are provided. easier to get to.
- Example 100 parts by weight of polyethylene glycol (molecular weight 4000, melting point 40° C.) as the first water-soluble material, 100 parts by weight of polycaprolactone (molecular weight 10,000, melting point 60° C.) as the first water-insoluble material, solvent (organic solvent ) was mixed with 800 parts by weight of ethyl acetate to prepare a liquid composition having a solid concentration of 20%.
- polyethylene glycol molecular weight 4000, melting point 40° C.
- solvent organic solvent
- 0.7 ml of the liquid composition was injected into a mold made of polydimethylsiloxane having recesses having the following shape.
- the area of the mold to be filled with the liquid composition has a size of 15 mm square, and a liquid reservoir is provided above the recess forming surface.
- the liquid composition was filled above the surface of the recess so that the needle-like portion had a base.
- ⁇ Concave shape square pyramid shape with a square cross section ⁇ Length of one side of the maximum cross section of the concave portion: 500 ⁇ m ⁇ Height of recess: 900 ⁇ m ⁇ Pitch of recesses: 1000 ⁇ m ⁇ Number of recesses: 13 columns and 13 rows, 169 in total ⁇ Arrangement of recesses: square lattice
- the mold was placed in an ultrasonic cleaner (ultrasonic cleaner AU-10C/manufactured by Aiwa Medical Industry Co., Ltd.) and subjected to ultrasonic treatment for 1 minute in an environment at a temperature of 23°C.
- an ultrasonic cleaner ultrasonic cleaner AU-10C/manufactured by Aiwa Medical Industry Co., Ltd.
- vacuum drying was performed for 30 minutes under a reduced pressure environment at a temperature of 23°C and a pressure of 0.05 MPa. After that, it was heated at 110° C. for 30 minutes in a non-humidity environment.
- a sheet was placed on the exposed surface of the base portion provided above the protrusions formed in the recesses in the mold after heating, and a weight (500 g) was placed on the placed sheet to perform a pressurization step. rice field. After that, after holding for 10 minutes at a low temperature of 3 ° C., the protrusions and base and the sheet are peeled off from the mold and immersed in purified water at 23 ° C. for 24 hours to remove the protrusions, the base and the sheet. of the first water-soluble material and the second water-soluble material were dissolved and removed.
- a microneedle structure was produced in the same manner as in the example except that the step of immersing the porous substrate in the solution was not performed.
- the root portion of the needle-like portion was peeled off from the base material with tweezers, and the inside of the needle-like portion was observed with an optical microscope (magnification: 50x and 100x).
- the inside of the root portion of the needle-like part was filled with the resin almost without gaps. was enough.
- protrusions were formed by cooling the composition, and after peeling from the mold, the protrusions were observed with an optical microscope (magnification: 50 times and 100 times) before immersion in purified water. Observations were made and the number of needles remaining on the substrate was counted. The ratio of the residual number to the total number of designed needle-shaped portions was calculated as the transfer rate.
- the microneedle structures obtained in Examples had a transfer rate of 50% or more, which was good transferability, while the microneedle structures obtained in Comparative Examples had a transfer rate of less than 50%, which was low in transferability.
- the microneedle structure of the present invention can be used as a test patch, for example, by placing an analysis sheet on the back side and laminating it with a tape.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Optics & Photonics (AREA)
- Hematology (AREA)
- Dermatology (AREA)
- Anesthesiology (AREA)
- Emergency Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
〔マイクロニードル構造体〕
図1に、本発明の一実施形態に係るマイクロニードル構造体10を示す。マイクロニードル構造体10は、基材11の一方面側に所定の間隔で互いに離間した複数の針状部12を備えている。マイクロニードル構造体10は、針状部12を介して皮膚内から間質液を吸収させ、得られた間質液を用いて検査を行う検査パッチや、基材11から針状部12を介して皮膚から体内に薬剤を投与する薬剤投与パッチとして利用することができるものである。
針状部12の形状や大きさ、形成ピッチ、形成数は、その目的とするマイクロニードルの用途等によって適宜選択することができる。針状部12の形状としては、円柱状、角柱状、円錐状、角錐状等が挙げられ、本実施形態では角錐状である。針状部12の最大直径又は断面の最大寸法は、例えば、25~1000μmであることが挙げられ、先端径又は先端の断面の寸法は1~100μmであることが挙げられ、針状部12の高さは、例えば、50~2000μmであることが挙げられる。さらに、針状部12は、基材11の一方向に複数列設けられるとともに、各列に複数形成されてマトリクス状に配されている。
基材11は、厚さ方向において液体の透過性を有するものであれば特に限定されるものではない。基材11は、内部に一方面から他方面側に貫通する微小な基材孔部が形成された多孔性の材料であることが好ましい。このような多孔性の基材11としては、公知の基材を用いることができ、例えば、発泡ポリウレタン樹脂等の発泡材料や多孔性セラミックス等の多孔質材料からなる基材、あるいは繊維状物質からなる基材が挙げられる。多孔性の基材11は、通常、水に不溶であるか、水に溶けにくい材料から形成される。好ましくは、取り扱いが容易である繊維状物質からなる基材である。ここで、本発明における繊維状物質とは、天然繊維、化学繊維等の繊維を意味する。繊維状物質からなる基材としては、これらの繊維からなる不織布、織布、編物、紙などが挙げられる。
好ましくは、マイクロニードル構造体10は、針状部12を介して皮膚内から体液を吸収させ、得られた体液を用いて検査を行う検査パッチ20に利用される。図2に示すように、検査パッチ20は、マイクロニードル構造体10を有し、その基材11の針状部12が設けられた面とは逆の面(以下、「背面」ということがある。)側に、分析シート21と、テープ22とを有する。なお、マイクロニードル構造体10は、基材11から針状部12を介して皮膚から体内に薬剤を投与する薬剤投与パッチとして利用することも可能である。この場合には、マイクロニードル構造体10の基材11の背面側に生理活性物質含有シートを設け、基材11および針状部12を介して生理活性物質含有シートからの生理活性物質を皮膚内に投与することができるように薬剤投与パッチを構成する。
(充填工程)
図3に、本発明の一実施形態に係るマイクロニードル構造体10の製造方法を示す。本実施形態では、図3(a)に示すように、複数の凹部1が形成されたモールド(型)2に液状組成物3を充填する(充填工程)。凹部1は、充填された液状組成物3で満たされる。
次に、振動工程としてモールド2を超音波洗浄装置に載置して、モールド2を超音波振動させることが好ましい。振動を与える手段としては、モールド2に対して微細な振動を与えることができるものであれば超音波洗浄装置に限られない。このような振動工程を行うことにより、図3(b)に示すように液状組成物3の凹部1への充填が促進され、さらには凹部1内の第一水不溶性材料と第一水溶性材料とが凹部1内の隅々にまで充填される。この充填により、気泡による欠点などのない、凹部1の形状に応じた転写性の高い針状部12を形成することができ、かつ、針状部12の強度が向上する。
振動工程の次に脱気工程を行うことが好ましい。これにより、凹部1内に含まれている空気を脱気することができ、凹部1への第一水不溶性材料および第一水溶性材料の充填をさらに促進するとともに有機溶媒の蒸発・乾燥を促進することができる。脱気工程は、例えば、後述する実施例のように、溶媒として酢酸エチルを用いる場合には、0.01~0.05MPa、20~25℃で行うことが好ましい。この圧力範囲で脱気を行うことで、液状組成物3が表面で固化することを抑制して有機溶媒を蒸発・乾燥させやすくし、凹部1への第一水不溶性材料および第一水溶性材料の充填をさらに促進することが可能である。
その後、80~120℃で加熱する加熱工程を行うことが好ましい。これにより、図3(c)に示すように、溶媒の蒸発・乾燥をさらに促進するとともに、第一水不溶性材料および第一水溶性材料のいずれかの融点以上に加熱した場合には、その材料は溶融した状態となり、凹部1への第一水不溶性材料および第一水溶性材料の充填が促進される。なお、本実施形態では、脱気工程後に加熱工程を行ったが、加熱工程を先に行ってもよい。
シート4は、前述した多孔性の基材11に水に可溶である第二水溶性材料と水に不溶である第二水不溶性材料とを含有させたものである。この前工程でモールド2が加熱されているので凹部1内の第一水不溶性材料と第一水溶性材料とは溶融した状態であり、シート4が載置されると凹部1内の溶融した第一水不溶性材料と第一水溶性材料とからなる突起部5がシート4に対して直接接着される。この場合に、シート4が第二水不溶性材料および第二水溶性材料を含んだものであるので、基材11が凹部1内の溶融した組成物を吸収してしまうことが抑制できる。その結果、マイクロニードル構造体10が多孔性の基材11を備え、かつ、液状の材料を用いて形成されたとしても、突起部5の特に根元部分に過剰な空隙が形成されないので針状部12が崩れてしまうことが抑制される。そのため、基材11との接着に適した形状を有する針状部12を形成することができ、針状部12と基材11との接着が良好なマイクロニードル構造体10を製造することができる。さらには、シート4が第二水溶性材料だけでなく第二水不溶性材料を含んだものであるので、凹部1内の溶融した第一水不溶性材料とシート4の含む第二水不溶性材料とが熱融着することにより、シート4と突起部5との接着性がさらに向上している。
次に、図3(e)に示すように、シート4に対して圧力を加える加圧工程を行う。加圧方法は特に限定されるものではなく、公知の方法を用いることができる。加圧工程においては、60~120℃で加熱する加熱工程も同時に行ってもよい。加熱工程も同時に行うことで、さらに接着性を高めることが可能である。その後、-10~3℃の低温状態で保持することで、凹部1内の突起部5が固化するとともに、突起部5とシート4との接着が完了する。このように、本実施形態では、加熱工程およびこれに続く加圧工程と突起部5の固化により、突起部5とシート4を接着する接着工程が行われる。また、加圧工程は行わず、加熱工程のみで突起部5とシート4とを接着させてもよい。あるいは、上述した接着手段により、加熱工程および加圧工程のいずれも伴わずに、突起部5とシート4を接着してもよい。本実施形態のように、液状組成物3が溶媒を含有する場合には、充填工程後に溶媒を蒸発させることにより、初めて針状部形成用の組成物の形状が固定される(形成工程)。そのため、形成工程よりも先に針状部形成用の組成物と基材11との接着工程を実施しておくことができず、接着工程は必ず形成工程後に行われるが、本発明では、シート4が水溶性材料を含むため基材11による針状部形成用の組成物の吸収が抑制され、所望の形状で針状部を得ることが可能である。
接着工程の完了の後、図3(f)に示すように、固化された突起部5とシート4とが接着されたものをモールド2から離間して、突起部5およびシート4の水溶性材料を除去する除去工程を行う。
本実施形態では、凹部1内に液状組成物3を充填して針状部12を形成したが、これに限定されない。例えば、形成工程が、液状組成物3を高い粘度で調製し、多孔質の基材11上に、ディスペンサー等でこの粘度の高い液状組成物3を滴下し、これにより針状部12を形成するという手法によるものであってもよい。この場合であっても、基材11に第一水溶性材料が少なくとも含まれていることで、液状組成物3が基材11に吸収されて針状部12が所望の形状を得ることができないことを抑制することが可能である。
得られたマイクロニードル構造体10の基材11の背面側の所定の位置に分析シート21を配置し(設置工程)、分析シート21を覆うようにテープ22を積層することで、検査パッチを製造することが可能である。積層方法は、従来公知の方法を用いることができ、例えば、基材11の背面側に分析シート21を載置したのちに、一般的に用いられる、ゴム系粘着剤、アクリル系粘着剤、シリコーン系粘着剤等の粘着剤層をテープ基材上に形成した粘着テープ22を積層することで検査パッチを製造できる。薬剤投与パッチも、同様の方法により製造することが可能である。
上述のマイクロニードル構造体およびその製造方法の実施形態においては、複数の針状部12が基材11上に直接設けられていたが、針状部12が、個々の針状部12の土台となるものであって、個々の針状部12と同様に孔部を有する基部を有し、個々の針状部12が基部を介して基材11上に設けられていてもよい。この場合にも、基部が、針状部12について説明した材料と同様のものからなり、または同様の工程により形成されるものであれば、針状部12と基材11とが、基部を介して良好な接着性を得ることができる。上述の充填工程において、基部を形成するためには、凹部1に相当する体積よりも過剰に液状組成物3をモールド2に充填し、凹部1から溢れさせればよい。この場合には、モールド2の凹部1形成面に壁部を設ける等して液溜めを設け、この液溜めで凹部1から溢れた液状組成物をためることで基部を形成できる。
〔実施例〕
第一水溶性材料としてのポリエチレングリコール(分子量4000、融点40℃)を100重量部、第一水不溶性材料としてのポリカプロラクトン(分子量10,000、融点60℃)を100重量部、溶媒(有機溶媒)としての酢酸エチルを800重量部で配合して、固形分濃度20%の液状組成物を調製した。
・凹部形状:断面正方形の四角錘形状
・凹部の最大断面の一辺の長さ:500μm
・凹部の高さ:900μm
・凹部のピッチ:1000μm
・凹部の数:縦列13本、13列の計169本
・凹部の配置:正方形格子状
2 モールド
3 液状組成物
4 シート
5 突起部
10 マイクロニードル構造体
11 基材
12 針状部
13 孔部
20 検査パッチ
21 分析シート
22 テープ
Claims (12)
- 孔部を有する針状部を厚さ方向において液体の透過性を有する基材の一方の面側に備えたマイクロニードル構造体の製造方法であって、
第一水不溶性材料および第一水溶性材料を含有する針状部形成用の組成物を用いて突起部を形成する形成工程と、
前記組成物又は前記形成工程において形成された前記突起部と、前記基材とを接着させる接着工程と、
前記突起部と前記基材とを水中に浸漬させて、前記第一水溶性材料を溶かして除去することで、前記突起部から前記針状部および前記孔部を形成する除去工程とを含むことを特徴とするマイクロニードル構造体の製造方法。 - 前記厚さ方向において液体の透過性を有する基材が、多孔性の基材であり、
前記接着工程が、前記形成工程で形成された前記突起部と、第二水溶性材料および前記多孔性の基材を含むシートとを接着させる工程であり、
前記除去工程が、前記第一水溶性材料および第二水溶性材料を溶かして除去する工程であることを特徴とする請求項1に記載のマイクロニードル構造体の製造方法。 - 前記多孔性の基材が、繊維状物質からなる基材であることを特徴とする請求項2に記載のマイクロニードル構造体の製造方法。
- 前記シートが、第二水不溶性材料を含むことを特徴とする請求項2または3に記載のマイクロニードル構造体の製造方法。
- 前記第一水不溶性材料と前記第二水不溶性材料とが同一であることを特徴とする請求項4に記載のマイクロニードル構造体の製造方法。
- 前記シートが、前記基材に第二水溶性材料を含浸させたものであることを特徴とする請求項2から5のいずれか一項に記載のマイクロニードル構造体の製造方法。
- 前記繊維状物質からなる基材が、不織布、織物、編物又は紙であることを特徴とする請求項2から6のいずれか一項に記載のマイクロニードル構造体の製造方法。
- 前記基材が液体非透過性を有する材料からなる基材であり、かつ、厚さ方向に亘り形成された貫通孔を有することを特徴とする請求項1に記載のマイクロニードル構造体の製造方法。
- 前記形成工程において、
前記針状部形成用の組成物を凹部を有する型に充填する充填工程を含むことを特徴とする請求項1から8のいずれか一項に記載のマイクロニードル構造体の製造方法。 - 前記充填工程において、
前記針状部形成用の組成物が溶媒を含み、
前記形成工程において、
前記溶媒を蒸発させることを特徴とする請求項9に記載のマイクロニードル構造体の製造方法。 - 前記基材の前記針状部が設けられた面とは逆の面側に、体液の分析手段および/または生理活性物質の貯留手段を設ける設置工程を有することを特徴とする請求項1から10のいずれか一項に記載のマイクロニードル構造体の製造方法。
- 孔部を有する針状部を多孔性の基材の一方の面側に備えたマイクロニードル構造体であって、
前記針状部が、第一水不溶性材料からなり、かつ、前記多孔性の基材に直接設けられ、
前記多孔性の基材が、第二水不溶性材料を含有することを特徴とするマイクロニードル構造体。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280014739.0A CN116867537A (zh) | 2021-03-31 | 2022-03-31 | 微针结构体的制造方法及微针结构体 |
KR1020237026976A KR20230163360A (ko) | 2021-03-31 | 2022-03-31 | 마이크로 니들 구조체의 제조 방법 및 마이크로 니들구조체 |
JP2023511729A JPWO2022211058A1 (ja) | 2021-03-31 | 2022-03-31 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-062451 | 2021-03-31 | ||
JP2021062451 | 2021-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022211058A1 true WO2022211058A1 (ja) | 2022-10-06 |
Family
ID=83456633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/016675 WO2022211058A1 (ja) | 2021-03-31 | 2022-03-31 | マイクロニードル構造体の製造方法およびマイクロニードル構造体 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPWO2022211058A1 (ja) |
KR (1) | KR20230163360A (ja) |
CN (1) | CN116867537A (ja) |
TW (1) | TW202304546A (ja) |
WO (1) | WO2022211058A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100048744A1 (en) * | 2006-05-01 | 2010-02-25 | Jung-Hwan Park | Particle Based Molding |
KR20150085502A (ko) * | 2015-07-02 | 2015-07-23 | 주식회사 엘지생활건강 | 이층 구조의 나노 크기 구멍을 가진 마이크로니들 및 이의 제조 방법 |
JP2017000724A (ja) * | 2015-06-05 | 2017-01-05 | 国立大学法人東北大学 | マイクロニードル及びマイクロアレイ並びにその製造方法 |
WO2019044993A1 (ja) * | 2017-08-30 | 2019-03-07 | 国立大学法人東北大学 | 皮膚の疾患又は状態の検出、診断又は治療のためのデバイス |
WO2019176126A1 (ja) * | 2018-03-16 | 2019-09-19 | 国立大学法人東京大学 | 検査チップおよび検査装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014094171A (ja) | 2012-11-09 | 2014-05-22 | Canon Inc | マイクロニードルおよびマイクロニードルアレイ |
-
2022
- 2022-03-31 JP JP2023511729A patent/JPWO2022211058A1/ja active Pending
- 2022-03-31 CN CN202280014739.0A patent/CN116867537A/zh active Pending
- 2022-03-31 KR KR1020237026976A patent/KR20230163360A/ko unknown
- 2022-03-31 WO PCT/JP2022/016675 patent/WO2022211058A1/ja active Application Filing
- 2022-03-31 TW TW111112637A patent/TW202304546A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100048744A1 (en) * | 2006-05-01 | 2010-02-25 | Jung-Hwan Park | Particle Based Molding |
JP2017000724A (ja) * | 2015-06-05 | 2017-01-05 | 国立大学法人東北大学 | マイクロニードル及びマイクロアレイ並びにその製造方法 |
KR20150085502A (ko) * | 2015-07-02 | 2015-07-23 | 주식회사 엘지생활건강 | 이층 구조의 나노 크기 구멍을 가진 마이크로니들 및 이의 제조 방법 |
WO2019044993A1 (ja) * | 2017-08-30 | 2019-03-07 | 国立大学法人東北大学 | 皮膚の疾患又は状態の検出、診断又は治療のためのデバイス |
WO2019176126A1 (ja) * | 2018-03-16 | 2019-09-19 | 国立大学法人東京大学 | 検査チップおよび検査装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2022211058A1 (ja) | 2022-10-06 |
KR20230163360A (ko) | 2023-11-30 |
TW202304546A (zh) | 2023-02-01 |
CN116867537A (zh) | 2023-10-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10029081B2 (en) | Molding compact, and manufacturing method for transdermal absorption sheet | |
US9987236B2 (en) | Transdermal absorption sheet, and manufacturing method for the same | |
EP3006078B1 (en) | Needle body manufacturing method | |
JP5063544B2 (ja) | 経皮吸収シート及びその製造方法 | |
US10596361B2 (en) | Transdermal absorption sheet and method of producing the same | |
US10814527B2 (en) | Method of producing transdermal absorption sheet | |
US10814118B2 (en) | Transdermal absorption sheet | |
JP6588864B2 (ja) | 経皮吸収シートの製造方法 | |
JP6290988B2 (ja) | マイクロ構造体製造方法 | |
WO2022211059A1 (ja) | マイクロニードル構造体及びその製造方法 | |
WO2022211058A1 (ja) | マイクロニードル構造体の製造方法およびマイクロニードル構造体 | |
JP2022157925A (ja) | マイクロニードル構造体の製造方法 | |
US8075548B2 (en) | Device for storing and administering active ingredients, and method for administering active ingredients by means of such device | |
JP6398293B2 (ja) | 針状体デバイス | |
JP7141625B1 (ja) | マイクロニードルパッチ及びマイクロニードル構造体 | |
WO2023190910A1 (ja) | マイクロニードル構造体 | |
JP2024049852A (ja) | マイクロニードル構造体の製造方法 | |
JP4935391B2 (ja) | 薬物輸送デバイス | |
KR102635701B1 (ko) | 약물 저장공간을 갖는 마이크로 니들 및 이의 제조방법 | |
WO2024005176A1 (ja) | マイクロニードル構造体 | |
JP6774495B2 (ja) | 生体吸収性膜の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22781268 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023511729 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280014739.0 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22781268 Country of ref document: EP Kind code of ref document: A1 |