WO2005061095A1 - 微小球体の製造方法およびその製造装置 - Google Patents
微小球体の製造方法およびその製造装置 Download PDFInfo
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- WO2005061095A1 WO2005061095A1 PCT/JP2003/016590 JP0316590W WO2005061095A1 WO 2005061095 A1 WO2005061095 A1 WO 2005061095A1 JP 0316590 W JP0316590 W JP 0316590W WO 2005061095 A1 WO2005061095 A1 WO 2005061095A1
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- DVVRRDZBTZGGCT-WKSAPEMMSA-M sodium;[2-[(8s,9r,10s,11s,13s,14s,16r,17r)-9-fluoro-11,17-dihydroxy-10,13,16-trimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] sulfate Chemical compound [Na+].C1CC2=CC(=O)C=C[C@]2(C)[C@]2(F)[C@@H]1[C@@H]1C[C@@H](C)[C@@](C(=O)COS([O-])(=O)=O)(O)[C@@]1(C)C[C@@H]2O DVVRRDZBTZGGCT-WKSAPEMMSA-M 0.000 description 1
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- NHXLMOGPVYXJNR-ATOGVRKGSA-N somatostatin Chemical compound C([C@H]1C(=O)N[C@H](C(N[C@@H](CO)C(=O)N[C@@H](CSSC[C@@H](C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC=2C=CC=CC=2)C(=O)N[C@@H](CC=2C=CC=CC=2)C(=O)N[C@@H](CC=2C3=CC=CC=C3NC=2)C(=O)N[C@@H](CCCCN)C(=O)N[C@H](C(=O)N1)[C@@H](C)O)NC(=O)CNC(=O)[C@H](C)N)C(O)=O)=O)[C@H](O)C)C1=CC=CC=C1 NHXLMOGPVYXJNR-ATOGVRKGSA-N 0.000 description 1
- 229960000553 somatostatin Drugs 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 150000003431 steroids Chemical class 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 239000000829 suppository Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- KFVSLSTULZVNPG-UHFFFAOYSA-N terbutaline sulfate Chemical compound [O-]S([O-])(=O)=O.CC(C)(C)[NH2+]CC(O)C1=CC(O)=CC(O)=C1.CC(C)(C)[NH2+]CC(O)C1=CC(O)=CC(O)=C1 KFVSLSTULZVNPG-UHFFFAOYSA-N 0.000 description 1
- 229960005105 terbutaline sulfate Drugs 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229960004989 tetracycline hydrochloride Drugs 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 229960002178 thiamazole Drugs 0.000 description 1
- 229960004072 thrombin Drugs 0.000 description 1
- LCJVIYPJPCBWKS-NXPQJCNCSA-N thymosin Chemical compound SC[C@@H](N)C(=O)N[C@H](CO)C(=O)N[C@H](CC(O)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](C)C(=O)N[C@H](C(C)C)C(=O)N[C@H](CC(O)=O)C(=O)N[C@H](C(C)C)C(=O)N[C@H](CO)C(=O)N[C@H](CO)C(=O)N[C@H](CCC(O)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@H]([C@H](C)O)C(=O)N[C@H](C(C)C)C(=O)N[C@H](CCCCN)C(=O)N[C@H](CC(O)=O)C(=O)N[C@H](CC(C)C)C(=O)N[C@H](CCCCN)C(=O)N[C@H](CCC(O)=O)C(=O)N[C@H](CCCCN)C(=O)N[C@H](CCCCN)C(=O)N[C@H](CCC(O)=O)C(=O)N[C@H](C(C)C)C(=O)N[C@H](C(C)C)C(=O)N[C@H](CCC(O)=O)C(=O)N[C@H](CCC(O)=O)C(=O)N[C@@H](C)C(=O)N[C@H](CCC(O)=O)C(O)=O LCJVIYPJPCBWKS-NXPQJCNCSA-N 0.000 description 1
- 229960003873 thymostimulin Drugs 0.000 description 1
- 230000002916 thymostimulin Effects 0.000 description 1
- 239000005495 thyroid hormone Substances 0.000 description 1
- 229940036555 thyroid hormone Drugs 0.000 description 1
- 229960004659 ticarcillin Drugs 0.000 description 1
- OHKOGUYZJXTSFX-KZFFXBSXSA-N ticarcillin Chemical compound C=1([C@@H](C(O)=O)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)C=CSC=1 OHKOGUYZJXTSFX-KZFFXBSXSA-N 0.000 description 1
- 229960000707 tobramycin Drugs 0.000 description 1
- NLVFBUXFDBBNBW-PBSUHMDJSA-N tobramycin Chemical compound N[C@@H]1C[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N NLVFBUXFDBBNBW-PBSUHMDJSA-N 0.000 description 1
- GYDJEQRTZSCIOI-LJGSYFOKSA-N tranexamic acid Chemical compound NC[C@H]1CC[C@H](C(O)=O)CC1 GYDJEQRTZSCIOI-LJGSYFOKSA-N 0.000 description 1
- 229960000401 tranexamic acid Drugs 0.000 description 1
- 230000009261 transgenic effect Effects 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
- MWKJTNBSKNUMFN-UHFFFAOYSA-N trifluoromethyltrimethylsilane Chemical compound C[Si](C)(C)C(F)(F)F MWKJTNBSKNUMFN-UHFFFAOYSA-N 0.000 description 1
- FAPSXSAPXXJTOU-UHFFFAOYSA-L trimethyl-[6-(trimethylazaniumyl)hexyl]azanium;dibromide Chemical compound [Br-].[Br-].C[N+](C)(C)CCCCCC[N+](C)(C)C FAPSXSAPXXJTOU-UHFFFAOYSA-L 0.000 description 1
- 201000008827 tuberculosis Diseases 0.000 description 1
- 239000000814 tuberculostatic agent Substances 0.000 description 1
- 229960002655 tubocurarine chloride Drugs 0.000 description 1
- VBEQCZHXXJYVRD-GACYYNSASA-N uroanthelone Chemical compound C([C@@H](C(=O)N[C@H](C(=O)N[C@@H](CS)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CS)C(=O)N[C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CC=1C=CC(O)=CC=1)C(=O)N[C@@H](CO)C(=O)NCC(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CS)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(O)=O)C(C)C)[C@@H](C)O)NC(=O)[C@H](CO)NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CO)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@@H](NC(=O)[C@H](CC=1NC=NC=1)NC(=O)[C@H](CCSC)NC(=O)[C@H](CS)NC(=O)[C@@H](NC(=O)CNC(=O)CNC(=O)[C@H](CC(N)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CS)NC(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)CNC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)[C@H](CO)NC(=O)[C@H](CO)NC(=O)[C@H]1N(CCC1)C(=O)[C@H](CS)NC(=O)CNC(=O)[C@H]1N(CCC1)C(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)[C@H](CO)NC(=O)[C@@H](N)CC(N)=O)C(C)C)[C@@H](C)CC)C1=CC=C(O)C=C1 VBEQCZHXXJYVRD-GACYYNSASA-N 0.000 description 1
- 229960005486 vaccine Drugs 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000009777 vacuum freeze-drying Methods 0.000 description 1
- 229940124549 vasodilator Drugs 0.000 description 1
- 239000003071 vasodilator agent Substances 0.000 description 1
- KDQAABAKXDWYSZ-PNYVAJAMSA-N vinblastine sulfate Chemical compound OS(O)(=O)=O.C([C@H](C[C@]1(C(=O)OC)C=2C(=CC3=C([C@]45[C@H]([C@@]([C@H](OC(C)=O)[C@]6(CC)C=CCN([C@H]56)CC4)(O)C(=O)OC)N3C)C=2)OC)C[C@@](C2)(O)CC)N2CCC2=C1NC1=CC=CC=C21 KDQAABAKXDWYSZ-PNYVAJAMSA-N 0.000 description 1
- 229960004982 vinblastine sulfate Drugs 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000012711 vitamin K3 Nutrition 0.000 description 1
- 239000011652 vitamin K3 Substances 0.000 description 1
- 229940041603 vitamin k 3 Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229920003176 water-insoluble polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229950009268 zinostatin Drugs 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
-
- 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
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1629—Organic macromolecular compounds
- A61K9/1641—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poloxamers
- A61K9/1647—Polyesters, e.g. poly(lactide-co-glycolide)
-
- 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
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1682—Processes
- A61K9/1694—Processes resulting in granules or microspheres of the matrix type containing more than 5% of excipient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
- B01F33/452—Magnetic mixers; Mixers with magnetically driven stirrers using independent floating stirring elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/02—Making microcapsules or microballoons
- B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/26—Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00094—Jackets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/18—Details relating to the spatial orientation of the reactor
- B01J2219/185—Details relating to the spatial orientation of the reactor vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/19—Details relating to the geometry of the reactor
- B01J2219/194—Details relating to the geometry of the reactor round
- B01J2219/1941—Details relating to the geometry of the reactor round circular or disk-shaped
- B01J2219/1943—Details relating to the geometry of the reactor round circular or disk-shaped cylindrical
Definitions
- the present invention relates to a method for producing microspheres based on a method completely different from a conventional method for producing microcapsules, nanospheres, and the like, and to an apparatus therefor. More specifically, the present invention relates to a method for producing microspheres in which an active ingredient is releasably contained in a polymer and an apparatus for producing the same.
- the active ingredient is preferably an S drug
- the present invention is suitable for producing microspheres intended for a drug delivery system (DDS), that is, microspheres for DDS.
- DDS drug delivery system
- DDS drug delivery system
- microcapsules spheres
- Conventional production of microcapsules (spheres) includes an interfacial precipitation method by forming a mold emolli- tion or dry immersion in liquid (for example, Japanese Patent Publication No. 42-13703), phase separation using a coacervation agent. Method (for example, JP-A-57-118512) or an interfacial polymerization method is often used.
- JP-A-57-118512 for example, JP-A-57-118512
- an interfacial polymerization method is often used.
- the present inventors have conducted intensive research and, as a result, have completed the present invention based on a method completely different from the conventional methods for manufacturing micro force, psenolle, nanosphere, and the like.
- the method for producing microspheres according to the present invention can solve the above-mentioned problems, can cope with various microcapsenoles or nanospheres, and various active ingredients, and can be used in a wide range of application modes. This is a versatile method.
- the present invention solves the problems of the prior art described above, and provides a method for easily producing low-cost, high-quality microspheres with simple equipment based on a completely different method; The purpose is to do.
- the present invention particularly relates to a method and an apparatus for producing a microsphere for DDS.
- the outline of the present invention is as follows.
- the present invention relates to a method for producing microspheres in which an active ingredient is releasably contained in a polymer
- microsphere sickle precursor By discharging droplets into the fluid, a microsphere sickle precursor is formed, and while the microsphere precursor is transported in the fluid, the solution contained in the microsphere leaker is formed. Transfer the agent (or suspension) into the fluid,
- the fluid is a lipophilic fluid when the polymer is a water-soluble polymer, and a certain layer is a hydrophilic fluid when the polymer is a water-soluble polymer. I have.
- the touch fluid is formed by dropping the liquid under a predetermined ⁇ .
- the discharge of the polymer solution (or suspension) into the fluid is performed by a force that is continuously released in small quantities so as to form droplets, or the polymer solution (or suspension) is discharged into the fluid. May be intermittently discharged at predetermined intervals little by little.
- This method is characterized in that the ⁇ S / J and the average ⁇ S of the sphere are between 0.0001 and 5000 ⁇ m.
- Knitted polymers include polyvinyl alcohol, polymethyl methacrylate, polyester, polycarbonate, polyurethane, polyurea, polyamide, polyalkylene oxalate, hydroxycarboxylic acid homopolymer, hydroxycarbonic acid copolymer, polyamino acid, cellulose derivative, and dextran. At least one selected from the group consisting of derivatives, gelatin, shellac, waxes, chitin, and chitosan.
- Kashiki polymer has an average molecular weight of about 1,000 to 1,000,000.
- the polymer is a high molecular weight polymer in vivo.
- Water, alcohols, esters, halogenated solvents It is selected from at least one selected from the group consisting of hydrocarbons, ethereals, aromatic hydrocarbons, hydrocarbons and ketones.
- the polymer solution (or suspension) is characterized in that it has a rice occupancy in the range of 50 to 10,000 cp at 25 ° C.
- the predetermined temperature is a temperature within a range of 4 to 40 ° C.
- the fluid is at least one or more liquids selected from the group consisting of water, alcohol, acetone, acetonitrile, fluid paraffin, and 0.1 to 10 (W / V)
- tfff The speed at which the self-fluid moves; ⁇ , 0.1. It is characterized by a constant speed in the range of 500 mL / min.
- the present invention relates to an apparatus for producing microspheres in which an active ingredient is releasably contained in a polymer
- a microsphere device main body for holding the microsphere for holding the microsphere
- a fluid supply device for sending a liquid as a fluid into the device body so as to move at a constant speed
- Knitted microspheres Polymer that discharges polymer ⁇ S (or suspension) consisting of at least the active ingredient, solvent (or dispersion medium), and polymer into the fluid moving inside the device body (or suspension) Liquid) discharge device,
- Polymer ⁇ (or suspension) is placed under a predetermined 3 ⁇ 4g,
- the microsphere application medium is formed by discharging droplets into the fluid, and the solvent (or dispersion medium) contained in the microsphere medium is transported while the microspheres are transported in the fluid. ) Let the tree 1 in the fluid,
- microspheres containing an active ingredient in a releasable manner.
- the lilt self-fluid supply device is characterized in that the self-fluid supply device is configured to send a liquid into the self microsphere device main body via a liquid delivery tube.
- a tree means that the liquid delivery pipe of the supply and lining device is composed of a plurality of liquid delivery pipes spaced at predetermined intervals.
- the polymer solution (or suspension) discharging device converts the polymer solution (or suspension) into a fluid flowing through the main body of the microsphere forming device through a polymer solution (or suspension) discharging nozzle. It is characterized in that it is configured to discharge at a predetermined angle with respect to the flow direction of its own fluid.
- the polymer solution (or suspension) discharge nozzle of the polymer solution (or suspension night) discharge device is composed of a plurality of polymer solution (or suspension) discharge nozzles spaced at predetermined intervals. It is characterized by.
- a microsphere storage section is provided below the main body, and a stirrer for stirring the liquid containing the microspheres stored in the microsphere storage section is provided.
- the discharge of the polymer solution (or suspension) into the fluid is continuously discharged little by little so as to form droplets, or intermittently at a small interval of * "f.
- the self-fluid is a lipophilic fluid if the self-polymer is a water-soluble polymer, and is a hydrophilic if the self-polymer is a non-water-soluble polymer.
- the discharge of the polymer solution (or suspension) into the fluid is performed at a predetermined angle between 45 ° and 90 ° with respect to the flow direction of the fluid. It is frequently configured to be performed in
- the average particle size of the microspheres is 0.000 :! It is said that it is manufactured so that it is between 50005000 ⁇ m. Detailed description of the invention
- the present invention is a 5t ⁇ method based on a completely different method from the conventional methods for manufacturing microcapsules, nanospheres, and the like, and a manufacturing apparatus for performing the manufacturing method.
- the present invention will be described in detail in the order of a microsphere, a microsphere manufacturing apparatus, and a manufacturing method thereof.
- microspheres produced according to the present invention are microspheres in which the active ingredient is releasably contained in the polymer.
- microspheres refers to a fine / J, a sphere consisting of a polymer, micro-capsules cell Norre, microspheres, micro Nono 0 - meaning take Lumpur, nanoparticles, Nanosufuea, the generic name, including such as nano-force capsule I do.
- "contained in a releasable manner” means that the active ingredient is released over time under given conditions or after a certain period of time after ingestion and administration of 'administration', and until then it is protected from the external environment. It is held inside in the form of
- microspheres that have the property of being controllable to the outside are microcapsules (spheres) intended for DDS.
- the functions of DDS selected from, for example, controlled release, targeting, ease of ingestion and administration, and enhanced effects; Based on type, structure, properties, etc.
- the average particle size of the microspheres produced according to the present invention is generally between 0.0001 and 5000 ⁇ m, preferably between 0.01 and: ⁇ m, more preferably between 0.1 and 500 / m.
- Microsphere force that is uniform in size and is substantially a perfect sphere can be manufactured by a woman using the method and apparatus of the present invention.
- the particle size of the microspheres has an individually desired range in accordance with the sustained release property and the form of application.
- the form of suspended fiber IJ used for 3 ⁇ 4lt agent its dispersibility, needle passing (To satisfy rawness, the average particle size is required to be in the range of about 0.5 to about 400 ⁇ m,
- the range of spheres fulfills this requirement well, and there is no problem with any other form of application, such as transmucosal, oral dosage forms, suppositories, implants .
- the difficult production of microspheres according to the present invention is an apparatus for producing microspheres in which a willow component force S is releasably contained in a polymer,
- a fluid supply device that sends the liquid as fluid into the main body of the microsphere ⁇ so as to move at a constant distance;
- Disgusting microsphere A polymer solution (or suspension) that discharges a polymer solution (or suspension) composed of at least an active ingredient, a solvent (or a dispersion medium), and a polymer in a fluid moving inside the device body
- a discharge device a polymer solution (or suspension) composed of at least an active ingredient, a solvent (or a dispersion medium), and a polymer in a fluid moving inside the device body
- a microsphere ⁇ precursor is formed by discharging droplets into the fluid, and while the microsphere precursor is transported in the fluid, the solvent contained in the microsphere precursor is dispersed in the dispersion medium. ) In the fluid
- It is characterized in that it is configured to form microspheres containing an active ingredient in a releasable manner.
- FIG. 1 shows an example of an embodiment of the manufacturing apparatus according to the present invention.
- the production apparatus is not limited to this embodiment.
- the main body of the microsphere f ⁇ M device which is a microsphere, is composed of a cylinder part that moves by a fluid force S therein, and a storage part that keeps the volume of the cylinder part and the fluid constant.
- the shape of the cylindrical portion is not particularly limited, but is preferably a cylindrical shape.
- the direction of the cylinder in the apparatus main body (2) is preferably a force S that defines the direction in which the fluid flows, and it is generally preferable to lower the fluid, and the cylinder is also erected.
- the upright cylindrical portion is a so-called column force.
- the material is not particularly limited as long as the material is stable with respect to a liquid which is a fluid.
- the diameter of the column may be selected in consideration of the number of ejection nozzles described later, but is not particularly limited.
- the diameter of the column is usually about 1 to 50 cm, preferably 3 to 5 cm.
- the column length is usually 50 to 300 cm, and is not particularly limited as long as it is sufficient.
- the column length is preferably, for example, 50 to 100 cm.
- the column may have an outer tube structure as one form of a device for keeping the fluid warm.
- the sphere has a microsphere fff section at the bottom of its cylindrical section below the main body of the microsphere, and a liquid containing microspheres shelled in the microsphere storage section.
- a stirring device for stirring for example, a magnetic stirrer or the like may be provided. The above-mentioned separation and placement is performed by the The crab or the fluid supply device and the polymer solution (or suspension) discharge device may be provided as temperature maintaining devices for maintaining the respective constant.
- the fluid supply device is configured to deliver liquid into the main body of the microsphere production device via a liquid delivery pipe for delivering liquid.
- a liquid delivery pipe for delivering liquid.
- the fluid supply device it is usually constituted by a container for storing a liquid, a delivery machine for delivering the liquid, and the like.
- the liquid delivery pipe is a pipe that connects the fluid supply device and the main body of the microsphere device, through which liquid is delivered from the supply device to the cylinder of the body by the action of a suitable delivery machine such as a pump. Is done.
- the liquid delivery pipe of the fluid supply device can be made up of a plurality of liquid delivery pipes spaced at predetermined intervals in order to produce a large amount of microspheres under the same conditions in a short time. .
- the polymer ( ⁇ ) is a suspension.
- it is sent to the main body of the microsphere by way of an appropriate delivery machine such as a pump via a delivery pipe.
- the tip of the delivery tube is equipped with a polymer solution (or suspension) discharge nozzle.
- the shape and inner diameter of the discharge nozzle are designed so that the polymer (or suspension) can be suitably discharged in the form of droplets.
- the diameter of the nozzle is usually as small as several / xm to several mm.
- the forehead (or suspension) discharge nozzle it is composed of a plurality of polymer intense night (or suspension) discharge nozzles spaced at predetermined intervals. This makes it possible to produce a large amount of microspheres simultaneously under the same conditions in a short time.
- Discharge of the polymer solution (or suspension) into the fluid is performed by a suitable delivery machine such as a pump. It is configured so that it can be released intermittently at predetermined intervals.
- the discharge of the polymer solution (or suspension) into the fluid is performed at a predetermined angle between 45 ° and 90 ° with respect to the flow direction of the fluid. S preferred.
- the polymer used as the microsphere may be a water-soluble polymer or a polymer that is hardly soluble in water.
- the term “poorly soluble” means that the solubility of the polymer in water is more than 0 and 1% (W / W) or less.
- a biocompatible polymer is preferred, and the polymer is natural or synthetic! / Even if it is out of alignment.
- polymers used in the present invention include polymers such as vinyl alcohol, olefin, styrene, biel chloride, vinyl acetate, vinylidene chloride, vinyl ether, vinylinole ester, acrylate ester, methacrylate ester, acrylonitrile, methacryl nitrile, polycarbonate, and the like.
- Polyurethane polyurea polyamide, polyamide, polyacrylamide, poly- ⁇ -cyanoacrylic acid ester, maleic anhydride copolymer, ethylene vinyl acetate copolymer, polyalkylene oxalate (polytrimethylene oxalate, poly Tetramethylene oxalate, etc.), hydroxycarboxylic acid homopolymer, hydroxycarboxylic acid copolymer, polyamino acid (poly-L-alanine, poly- / benzyl-) L-glutamic acid, poly-/-methyl-L-daltamic acid), cellulose derivatives (acetyl cellulose, nitrocellulose), dextran derivatives, agar, alebumin, collagen, casein, gelatin, pectin, shellac, waxes, Alginic acid, natural gum substances (gum arabic, column gum, etc.), chitin, chitosan and the like.
- ⁇ s polyester examples include the above-mentioned hydroxycarboxylic acid homopolymer, hydroxycarboxylic acid copolymer or a mixture thereof, polycyanoatalate, etc. Is exemplified.
- Preferred specific examples of the polyhydroxycarboxylic acid include polylactic acid, polyglycolic acid, Examples include citrate-glycolic acid copolymer, polyproprolataton, polyhydroxybutyrate, polyhydroxysisobutylate, polyhydroxyvalerate, and polyY-hydroxyvaleric acid.
- Particularly preferred polymers are lactic acid-glycolic acid copolymer, polylactic acid, lactate lactate prolataton copolymer, chitin, chitosan, and gelatin. These polymers may be one kind, or two or more kinds of copolymers or simple mixtures, or salts thereof.
- the biocompatible polymer or the in-vivo polymer used in the present invention can be synthesized by a general synthesis method without any problem.
- a copolymer of lactic acid and glycolic acid is used as a polymer.
- the composition ratio is preferably 100/0 to 50/50 (W / W).
- the weight average molecular weight is preferably about 5,000 to 30,000, and more preferably about 5,000 to 20,000! /.
- the composition ratio of the glycolic acid / 2-hydroxybutyric acid copolymer is preferably about 40/60 to 70/30 (W / W), and the weight average molecular weight of the daricholic acid / 2-hydroxybutyric acid copolymer is about 5, It is preferably from 000 to 25,000, particularly preferably from 5,000 to 20,000.
- the composition ratio is 100/0 to 25/75 (W / W).
- the weight average molecular weight of the polylactic acid is in the range of about 5,000 to 30,000, more preferably about 6,000 to 20,000.
- the mode of copolymerization of the copolymer may be random, block or graft.
- the D-form, L-form, and D- and L-forms can be used. Of these, the D, L-form is preferred.
- the average molecular weight of these polymers used in the present invention is preferably from about 1,000 to about 1,000,000, more preferably from about 5,000 to about 500,000.
- a solvent used for dissolving or dispersing the knitted polymer is not particularly limited as long as it is a good solvent or dispersant for the polymer.
- the dispersion medium is not particularly limited as long as it is a good solvent or dispersant for the polymer.
- examples include toxenochinoethenol, 1,4-dioxane, benzene, tonoleene, xylene, n-pentane, n-hexane, acetone, methylethylketone, and acetonitrile.
- polylactic acid or a lactic acid-glycolic acid copolymer is used as a polymer
- ethyl thiocyanate or methylene chloride is used.
- the tut self-fluid is accommodated in a fluid supply device of the microsphere device, is sent out through a liquid delivery pipe into a cylinder portion of the microsphere device main body, and flows through the cylinder portion at a predetermined flow rate.
- a fluid supply device of the microsphere device is sent out through a liquid delivery pipe into a cylinder portion of the microsphere device main body, and flows through the cylinder portion at a predetermined flow rate.
- the fluid serves as a carrier and a perfusate because it serves to make the microspheres (a suspension contained in the microspheres) into the fluid during the transfer of the female microspheres. It is.
- a hydrophobic solvent is selected from the above solvents so that the ⁇ polymer is a water-soluble polymer ⁇ is a lipophilic fluid.
- a ⁇ solvent is selected so as to be a Slz fluid.
- solvents such as water, alcohol, acetone, methanol, ethanol, tetrahydrofuran, ethyl acetate, acetonitrile, acetonitrile, acrylonitrile, and liquid paraffin are used.
- a liquid composed of at least one liquid selected from the group consisting of water, ethanol, and liquid paraffin it is particularly preferable to use a liquid composed of at least one liquid selected from the group consisting of water, ethanol, and liquid paraffin.
- Water and liquid paraffin are particularly preferred from the viewpoints of safety and viscosity adjustment.
- water-soluble dextrins are formed through microspheres of gelatin ⁇ ⁇ , such as liquid paraffin, by controlling the temperature and controlling the ⁇ ⁇ during sedimentation of microspheres under temperature control. Microspheres can be manufactured.
- a surfactant is usually added to the fluid at a ratio of 0.1 to 10%, preferably 1 to 3% to form droplets.
- Any surfactant can be used for this purpose.
- the fluid is preferably kept constant within the range of 4 to 40 ° C, preferably 10 to 40 ° C, preferably by the action of the above-mentioned holding device for holding the fluid supply device and the small sphere (the main body of the pocket device) at a constant level. Is held.
- the moving velocity of the fluid is usually a constant velocity in the range of 0.5 :! to 500 mL / min, preferably 0.5 to 50 mL / min.
- the active ingredient encapsulated in the microspheres is generally a drug, and may additionally include a support, a stabilizer, and the like, if necessary.
- the drug may be a pesticide, a fertilizer, or the like, in addition to a drug, depending on its use and purpose.
- the method for producing microspheres of the present invention can be applied to a wide range of fields such as photocopying, pressure-sensitive copying paper, adhesives, and paints. The range of application will be expanded in the area.
- the bioactivity that becomes 3 ⁇ 4 ⁇ is not particularly limited, and any bioactive drug can be included in the microspheres as needed. Therefore, the drug may be a 7-soluble drug or a poorly water-soluble drug. Not just one drug, A plurality of drugs can be included in a coexisting form. For example, stomach ulcers; two-, three-, or four-drug combinations used in the treatment of ⁇ , tuberculosis, cold, etc., use multiple drugs simultaneously to ensure the synergistic and complementary effects of the combination. ing.
- drugs include: anti-inflammatory drugs, antipyretic analgesics, anti-inflammatory drugs, antitussive expectorants, anti-ulcer agents, sedatives, muscle relaxants, antidepressants, antiepileptics, antituberculosis agents, Antiarrhythmic agent, vasodilator I, inotropic agent, antiallergic agent, antihypertensive diuretic agent, anti-glycemic agent, anti-inflammatory agent, hemostatic agent, hormonal agent, bioactive peptide, angiogenesis inhibitor, angiogenesis agent Drugs, narcotics antagonists, bone resorption inhibitors, rheumatic drugs, contraceptives, diuretics, stomach digestive drugs, mt vitamins, vaccines, constipation treatments, hemorrhoids treatments, various enzyme preparations, femoral worms, inter- Hue mouth / carcinogen, anthelmintic, bactericidal disinfectant for husk, parasitic agent for pirate skin disease, etc. More specifically, applicable drugs are as
- Heavy »J includes methotrexate, actinomycin D, mitomycin C, bleomycin hydrochloride, dau norebicin, vinblastine sulfate, vincritin sulfate, adriamycin, neocarzinostatin, fluorouracil, cytosine arabinoside, krestin, picibanil, lentinin, vestinin Rebamizonole, azimexone, glycyrrhizin, cisplatin and the like.
- Antibiotics include tetracycline hydrochloride, oxytetracycline hydrochloride, doxycycline hydrochloride, lolitetracycline, amikacin, fradiomycin, sisomycin, gentamicin, canendomycin, dibekacin, ribidomycin, tobramycin, ampicillin, amoxicillin, and ticarcillin , Cefalolidin, cephalotin, cefsulodin, cefotiam, cefmenoxime, cefmetazonole, cefazolin, cefotaxime, cefoperazone, ceftizoxime, moxolactam, flufaqueln, azthreonam, chenamycin, etronidazole, phlegmide, clarithromycin Sodium salicylate, sulpyrine, diclofena Sodium, funolefenamic acid sodium, indomethacin sodium, morphine hydroch
- ephedrine hydrochloride As antitussive expectorants, ephedrine hydrochloride, methylephedrine hydrochloride, ⁇ nosporin acid, codine phosphate, dihydrocodine phosphate, closophagenol hydrochloride, aloclamide hydrochloride, picoperidamine hydrochloride, cloperastine, isoproterenol hydrochloride, protokyrol hydrochloride, Salbutamol sulfate, terbutaline sulfate and the like.
- Anti-ulcer; * 3 ⁇ 4U such as histidine hydrochloride and Metoc mouth plamide
- examples include: prochronoreperazine, chlorpromazine hydrochloride, trifluoropropazine, tritoxylamine sulfate, mouth scopolamine, etc.
- muscles include pancuronium bromide, tubocurarine chloride, pridinol methanesulfonate, etc., and antidepressants.
- Examples include imipramine, clomipramine, noxiptilin; M phenenoresin, etc .; and anti-tension agents include chlordazepoxide hydrochloride, acetazolamide sodium, phenytoin sodium, ethosuximide and the like.
- therapeutic therapy '' includes fenfonolemin hydrochloride, glymidine sodium, fufo / remin hydrochloride, dalipizide, etc., heparin sodium, sodium citrate, etc. as drugs, thrombin, thromboplastin, and hemostatic drugs.
- examples include acetomenaphthone, menadione sodium sulfite, sodium tranexamic acid, ⁇ -aminocaproic acid, adrenochrome monoaminoguanidine methanesulfonate, sodium carbazochrome sulfonate, and the like.
- Intense heart IJ includes aminophylline, theophyllol, ethirefrine hydrochloride, transbioxocamphor, and the like.
- chlorpheniramine maleate methoxyphenamine hydrochloride, diphenhydramine hydrochloride, tripelenamine hydrochloride, metzilazine hydrochloride, clemizole hydrochloride And methoxyphenamine hydrochloride, dipheninolevirine hydrochloride, etc.
- antihypertensive diuretics pentadine, hexamethonium bromide, mecamylamine ⁇ citrate, estrazine hydrochloride, clonidine hydrochloride and the like.
- Hormonal agents include sodium prednisolone phosphate, prednisolone succinate, dexamethasone sodium sulfate, betamethasone sodium phosphate, hexestrol acetate, hexestrol phosphate, methimazole, etc.Fumagillin and fumagillol derivatives as angiogenesis inhibitors
- narcotics such as steroids for inhibiting newborns include nalonolefine hydrochloride, naloxone hydrochloride, and levallorphan tartrate, and bone resorption inhibitors include (io-containing alkyl) aminomethylenbisphosphonic acid.
- the drug may be in the form of a salt or a derivative in addition to the drug itself.
- Bioly active peptides include oligopeptides, polypeptides, and may be misaligned, as long as they have bioactivity. Molecules ⁇ About 200-80,000 are preferred! / ⁇ . Specific examples include luteinizing hormone-releasing hormone or a derivative thereof, insulin, somatostatin or a derivative thereof, growth hormone, prolatatin, adrenocorticotropic hormone, thyroid hormone, melanocyte-stimulating hormone, parathyroid honolemon, pa, sopressin, and oxytocin.
- auxins In addition to medical drugs, wisteria (antibacterials, herbicides, insecticides, etc.), auxins, It may be a drug such as noremon, insect hormone, or fish.
- the size of these drug particles is not particularly limited as long as they are appropriately encapsulated in the microspheres by a polymer.However, a hammer mill, screen mill, ball mill, tower mill, vibrating mill, jet mill, colloid mill or mortar, etc. It is preferable to pulverize finely by a method and then use it for preparing a polymer solution. It is desirable that the particle size is 1/10 or less, and preferably 1/100 or less, of the final microsphere size obtained. In consideration of the size of the microspheres, it is usually preferable to use particles having a particle size in the range of 0.00001 ⁇ m to several tens ⁇ m. In particular, when particles having a particle diameter of 10 ⁇ m or less are used, uniform and particularly minute spheres can be obtained.
- the concentration of these active ingredients in the polymer solution (or suspension) is about 0.001 to 90% (WZW), more preferably about 0.01 to 80% (wZw), and particularly preferably about 0.1 to 80% (wZw). 01 to 70 (W / W).
- the production method according to the present invention is a method for producing microspheres in which an active ingredient is releasably contained in a polymer
- a polymer solution (or suspension) comprising at least components, a solvent (or a solvent), and a polymer is prepared under a predetermined temperature.
- a microsphere precursor is formed by discharging droplets into a fluid, and the microspheres (the carrier (or suspension) contained in the microspheres during transport of the precursor in the fluid are formed. Turbidity) in the fluid
- Forming polymer microspheres that contain an active ingredient in a releasable manner is regarded as a street floor.
- microspheres composed of 7_R-soluble polymer, or microspheres composed of water-insoluble polymer can be manufactured.
- the polymer solution (or suspension) is composed of at least ⁇ ) component, solvent (or dispersion medium) and polymer, and the objective of the production is, if necessary, other substances such as auxiliaries, stable It is also possible to include an agent and the like.
- the polymer is preferably in a dissolved state, S, but may instead be uniformly dispersed.
- Polymer In order to dissolve or uniformly disperse the mixture, usually, for example, a method using a mixer such as a magnetic stirrer, a propeller type stirrer, a turbine type stirrer, an intermittent shaking method, a colloid mining method, a homogenizer, etc.
- a publicly known dissolution / dispersion method such as an ultrasonic method or an ultrasonic irradiation method can be used.
- This polymer solution (or suspension) is accommodated in a polymer solution (or suspension) discharge device of the production apparatus, and is preferably kept at a constant temperature by the above-mentioned temperature keeping device. That is, the polymer solution or suspension is maintained at a constant temperature preferably in the range of 4 to 40 ° C, more preferably 10 to 40 ° C.
- the polymer / firewood night (or suspension) in the discharge device is moved at a constant flow rate, usually in the range of 0.1 to 500 mL / min, preferably in the range of 0.5 to 50 mL / min. Sent to
- the polymer solution (or suspension) is predetermined from 45 ° to 90 ° from the nozzle hole toward the fluid flowing in the cylindrical portion of the microsphere device body, preferably with respect to the flow direction. Dispensed at an angle. The ejection angle may be determined so as to obtain a suitable droplet under given conditions.
- the liquid may be ejected in small quantities in a smooth flow state so that minute droplets are formed by the flow of the fluid.] ⁇
- Some lasers are ejected intermittently at predetermined intervals in small increments. You can also. However, the ejection must be performed such that a droplet in the fluid enters, and the droplet becomes a microsphere having a uniform particle diameter while being transported as a microsphere precursor in the fluid.
- tins polymer solution (or suspension) discharge device polymer discharge nozzle (or suspension) consists of a plurality of polymer solution (or suspension) discharge nozzles spaced at predetermined intervals, Under the same conditions, it is possible to produce a large number of microspheres simultaneously in a short time.
- the concentration of these polymers in the polymer (or suspension) is preferably 1 to 50 (w / v)%, particularly preferably 10 to 40 (w / v)%. If the polymer concentration is less than 1 (w / V)%, there is a problem that the inclusion rate of the drug in the microspheres is low, and if it exceeds 50 (w / v)%, it is difficult to form microspheres. And other problems.
- the ratio of the polymer to the solvent (or dispersion medium) is preferably 99.9 / 0.1 to 50/50, more preferably 99/1 to 70/30.
- the polymer in the microsphere precursor that occurs during transport by the fluid will not be thickened sufficiently, and the leakage of the drug to be included will be large, resulting in a decrease in the encapsulation rate. Resulting in. If the concentration is higher than this, the droplets of the polymer solution (or suspension) become too large, and the viscosity of the polymer may still be insufficient.
- the polymer melt (or suspension) in order to form a suitable microdroplet with a fluid, the polymer melt (or suspension) must be in the range of 50 to 10,000 cp, more preferably in the range of 200 to 2,000 cp. It is desirable to have viscosity. If the viscosity is lower than 50 cp, the polymer solution (or suspension) may not be formed into small droplets due to the flow of the fluid. If the viscosity is less than 10,000 cp, the droplet becomes large. May be too much.
- a polymer in which the polymer (or suspension) is discharged in the form of droplets into a fluid is discharged in the form of droplets into a fluid.
- V ⁇ A small amount of V ⁇ is continuously released in the form of droplets due to the flow of the fluid, and is transported through the fluid as a microsphere precursor in the fluid, during which a constant size is produced by the action of surface tension Spherical particles. Furthermore, during the transfer, the microsphere precursor contained in the microsphere precursor is a strong force; Its tree mass is determined by various factors such as polymer (or suspension), polar material, and fluid movement speed. This age, fluid, polymer? Night (or suspension) is always in the range of 4 to 40 ° C, preferably 10 to 40 ° C, preferably due to the operation of the device. It is done.
- the spheres produced by the production method of the present invention are substantially perfect spheres, and are uniform microspheres whose size distribution is kept within a narrow range.
- microspheres formed during the transport in the fluid are collected in the microsphere reservoir below the main body of the microsphere manufacturing device, and as the final step of encapsulation, Stir well with stirrer. During that time, the solvent (or dispersion medium) is further extracted from the microspheres, and the microspheres with uniform particle size and strength are completed.
- the time required for full stabilization is usually about 0.5 to 2 hours, preferably 1 to 1.5 hours.
- the generated microspheres are collected by centrifugation or filtration in the next step, and the recovered microspheres are washed with an appropriate washing solution such as distilled water or a solvent. If necessary, completely remove fine j, ij, and ij, zk, etc. by vacuum drying or freeze drying.
- microspheres produced by the manufacturing method of the present invention can contain water-soluble or poorly water-soluble active ingredients, and can also contain substances with misalignment, so that a polymer can be selected according to the purpose of use. Because the size can be easily adjusted, it is possible to apply wide-ranging formulations.
- microspheres that can be administered in various forms such as subcutaneous, intradermal, intramuscular, intraperitoneal, diseased site, arteriovenous and oral can be prepared as a medicine.
- the microspheres containing the mechanical components are usually administered or applied after being dispersed in a suspension or the like. In order to release a key or the like slowly, it can be used by spraying microspheres on soil or leaves.
- the size and swelling of the microparticles can be adjusted widely, and therefore, the microcapsules (spheres) containing proteins, enzymes, antibodies, genes (DNA or RNA), etc. Promising as a use. Brief Description of Drawings
- FIG. 1 shows an example of a microsphere manufacturing apparatus of the present invention.
- 1 fluid supply device
- 2 polymer / sickle (or suspension) discharge device
- 3 spray One nozzle, 4; drain, 5; column filled with fluid, 6; microsphere reservoir (collection site), 7; magnetic stirrer
- the vertical axis is the release percentage (%), and the horizontal axis is the time (days).
- Example 2 shows the release of taxol from the microspheres obtained in Example 1.
- the vertical and horizontal axes are the same as in Figure 4 (iM ⁇ -.
- V ⁇ is the ⁇ ⁇ of the microsphere.
- a poly (L-lactic acid-glycolic acid) copolymer (PLGA, lactic acid 75 / glycolic acid 25) having a molecular weight of 18,000 was obtained from BMG (Kyoto) and used.
- Polyvinyl alcohol (PVA, saponification degree 88%, polymerization degree 250) was obtained from Unitika Ltd. (Osaka), and Taxol (TaXo1) was obtained from Sigma.
- the HPLC system used was from Toyo Soda Co., Ltd. Production Example 1
- Taxol-dissolved PLGA was transformed into liquid paraffin with a 10% span of 80%.
- the solution was stirred at 260 rpm, and the night temperature was raised from 35 ° C to 42 ° C at a rate of 0.1 ° C per minute. After stirring for 8 hours, the microspheres were collected, washed three times with hexane, and freeze-dried.
- microspheres were produced in exactly the same manner as described above except that cyanamide was used in place of carboxylic acid as a cyclic IJ to dissolve PLGA.
- the cured microspheres obtained in Production Example 1 and Comparative Example 1 could be observed with an optical microscope.
- a few drops of the microsphere suspension were placed on a cover glass and observed with an optical microscope (Nikon).
- the surface and porosity of these microspheres were sputter-coated with gold and examined with a Cine electron microscope (Hitachi, S-4700). The microscope images are shown in FIGS.
- each of the microspheres enclosing Taxol was spherical particles having a smooth surface.
- the size of the microspheres obtained by the production method of Example 1 The cloth was even narrower and smaller than the microspheres of Comparative Production Example 1 (see FIG. 2).
- the microspheres of Comparative Production Example 1 are ⁇ ⁇ ⁇ ⁇ ⁇ , and microspheres that adhere to each other or are partially fused can be seen from Fig. 3.
- the initial encapsulation amounts of the taxol-encapsulated microspheres produced in Production Example 1 and Comparative Production Example 1 were examined by HPLC.
- the accurately weighed 10 mg of microspheres was diluted to 10 mL with an angle of volume in acetone nitrile.
- a reversed-phase HPLC system a Tosoh ODS (4.6 x 250 mm) column, the mobile phase was acetonitrile-water (60:40) system, detection was performed at 273 nm, and the sample injection volume was 20 ⁇ m. ⁇ L
- an active ingredient such as a physiologically active drug can be contained in a microsphere so as to be releasable and uniformly dispersed.
- the inclusion amount of the active ingredient per microsphere is large, and the ratio of the microspheres incorporating the active ingredient is also large, so that the overall yield is good.
- the microspheres produced by the production method of the present invention are uniform spheres having a small size and distributed in a range, and their shapes are substantially complete spheres.
- the initial burst release of the active ingredient is effectively suppressed. Therefore, for example, it is suitably controlled so that the release of the bioactive drug in the body can be performed over a long period of time.
- microspheres containing an active ingredient in a releasable manner are controlled under the same conditions, and simple processes can be performed in a short time and at high cost at a low cost. Can be manufactured. Further, according to the production apparatus and the production method of the present invention, safety can be ensured in a wide range, particularly because harmful substances such as crosslinked ij are not used, which enables production under a low temperature.
- the manufacturing device according to the present invention has a relatively simple configuration and a simple process, so that it can be used for mass production on an industrial scale, and the manufacturing cost can be significantly reduced.
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Description
Claims
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PCT/JP2003/016590 WO2005061095A1 (ja) | 2003-12-24 | 2003-12-24 | 微小球体の製造方法およびその製造装置 |
AU2003292763A AU2003292763A1 (en) | 2003-12-24 | 2003-12-24 | Process for producing microsphere and apparatus for producing the same |
US10/584,719 US20070154560A1 (en) | 2003-12-24 | 2003-12-24 | Process for producing microsphere and apparatus for producing the same |
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WO2009000084A1 (en) * | 2007-06-22 | 2008-12-31 | Fio Corporation | Systems and methods for manufacturing quantum dot-doped polymer microbeads |
US9695482B2 (en) | 2007-10-12 | 2017-07-04 | Fio Coporation | Flow focusing method and system for forming concentrated volumes of microbeads, and microbeads formed further thereto |
US9792809B2 (en) | 2008-06-25 | 2017-10-17 | Fio Corporation | Bio-threat alert system |
US9805165B2 (en) | 2009-01-13 | 2017-10-31 | Fio Corporation | Handheld diagnostic test device and method for use with an electronic device and a test cartridge in a rapid diagnostic test |
US9945837B2 (en) | 2008-08-29 | 2018-04-17 | Fio Corporation | Single-use handheld diagnostic test device, and an associated system and method for testing biological and environmental test samples |
CN112569878A (zh) * | 2020-01-21 | 2021-03-30 | 苏州恒瑞宏远医疗科技有限公司 | 制备粒径均一的聚乙烯醇栓塞微球的设备及其生产工艺 |
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CA2580589C (en) | 2006-12-19 | 2016-08-09 | Fio Corporation | Microfluidic detection system |
EP2039352A1 (en) * | 2007-09-18 | 2009-03-25 | Institut National De La Sante Et De La Recherche Medicale (Inserm) | Aqueous-core lipid nanocapsules for encapsulating hydrophilic and/or lipophilic molecules |
CN101885852B (zh) * | 2010-07-07 | 2012-01-11 | 天津大学 | 表面光滑明胶微球与制备方法 |
GB201016433D0 (en) | 2010-09-30 | 2010-11-17 | Q Chip Ltd | Apparatus and method for making solid beads |
GB201016436D0 (en) | 2010-09-30 | 2010-11-17 | Q Chip Ltd | Method of making solid beads |
US8652366B2 (en) * | 2010-11-01 | 2014-02-18 | Board Of Regents, The University Of Texas System | Aerosol-mediated particle synthesis |
US9510515B2 (en) * | 2013-03-15 | 2016-12-06 | EntropySolutions LLC | Rootzone heating for energy conservation using latent heat storage |
US20150359804A1 (en) * | 2014-06-12 | 2015-12-17 | Orbis Biosciences, Inc. | Extended-release drug delivery compositions |
TWI631985B (zh) * | 2016-10-26 | 2018-08-11 | 財團法人金屬工業研究發展中心 | 微粒製造方法 |
CN114082376B (zh) * | 2022-01-10 | 2022-04-22 | 烟台科立化工设备有限公司 | 一种聚合物微球生产装置及生产方法 |
CN118637960A (zh) * | 2024-08-15 | 2024-09-13 | 吉林省林业科学研究院(吉林省林业生物防治中心站) | 一种以林业废弃物为原料的肥料及其制备方法 |
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Also Published As
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WO2005061095A9 (ja) | 2005-10-13 |
US20070154560A1 (en) | 2007-07-05 |
AU2003292763A1 (en) | 2005-07-14 |
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