WO2018110792A1 - 생분해성 고분자의 다공성 미립자, 및 이를 포함하는 고분자 필러 - Google Patents
생분해성 고분자의 다공성 미립자, 및 이를 포함하는 고분자 필러 Download PDFInfo
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- WO2018110792A1 WO2018110792A1 PCT/KR2017/008704 KR2017008704W WO2018110792A1 WO 2018110792 A1 WO2018110792 A1 WO 2018110792A1 KR 2017008704 W KR2017008704 W KR 2017008704W WO 2018110792 A1 WO2018110792 A1 WO 2018110792A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/025—Explicitly spheroidal or spherical shape
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/0279—Porous; Hollow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- A61K8/8147—Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
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- 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)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/18—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/16—Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/413—Nanosized, i.e. having sizes below 100 nm
Definitions
- the present invention relates to porous fine particles of a biodegradable polymer, and a polymer filler comprising the same.
- botulinum toxin and facial fillers are typical products in the medical field.
- Botulinum toxin which was initially used for muscle relaxation, is now more often used in the form of facial wrinkles for cosmetic purposes.
- the filler market which can be used as a volume filler for skin by being safe and bioabsorbed, such as collagen and hyaluronic acid, is also rapidly growing.
- First-generation fillers used collagen components extracted from animals. However, due to a collagen allergic reaction and a short maintenance period of 1 to 3 months, it is rarely used today.
- the second-generation filler is a hyaluronic acid-based filler and currently occupies 90% of the market.
- Hyaluronic acid is a safe ingredient present in joint fluid, cartilage, and skin in the human body.
- non-crosslinked hyaluronic acid is ineffective in one day after injection into the skin. Therefore, many companies cross-link hyaluronic acid to make fillers that have a 1-1.5 year effect.
- the more crosslinking agents used for crosslinking the more important is the technology to completely remove the crosslinking agent used because it may cause toxicity in the human body.
- Third generation fillers are calcium fillers made of materials that do not readily degrade in vivo and polymethylmethacrylate (PMMA) fillers that do not permanently degrade. Calcium fillers do not decompose well, so the effect is long lasting if the procedure is good, but if you do not like the results after the procedure, you have to wait a long time until the raw material is completely biodegraded have. PMMA fillers can be expected to have a permanent effect, but it is difficult to remove if the procedure is wrong. In addition, the raw material remains in the human body for a long time, so the side effects are high, the market is in danger of exiting.
- PMMA polymethylmethacrylate
- Biodegradable polymer fillers unlike hyaluronic acid fillers that maintain the volume of the skin in the volume of the product itself, are fillers that naturally restore and maintain the volume by inducing the production of collagen as the polymer biodegrades.
- the maintenance period can be controlled by the molecular weight of the polymer, and currently released products can maintain the volume for various periods of 1 to 4 years.
- the initial volume decreases significantly within one week after the procedure, and the volume gradually rises over four weeks to six months.
- Korean Patent No. 1572256 discloses solubilizing a polycaprolactone polymer in a solvent and then mixing the solubilized polycaprolactone polymer with a liquid containing a surfactant and having a viscosity ranging from 20 to approximately 10,000 cP;
- a process for preparing polycaprolactone-comprising microparticles comprising forming polycaprolactone-comprising microparticles from a solution obtained, and at least i) a diameter in the range of from 5 to 200 ⁇ m, ii) uniformity obtained by said process Homogenous density, morphology and content, iii) essentially spherical microspheres, iv) soft particles characterized by a smooth surface.
- these microparticles have a smooth and smooth surface, and the prepared filler has a disadvantage in that the initial volume decreases significantly within one week after the procedure, and then gradually increases in volume over 4 weeks to 6 months.
- Korean Patent No. 1142234 includes a porous biodegradable polymer microparticle used as a bulking agent or filler for urinary incontinence after incorporation, and a temperature-sensitive phase-transition biocompatible polymer aqueous solution. Injectables are disclosed.
- the biodegradable polymer microparticles have a porosity of 80 to 96%, the pore diameter of 25 to 500 ⁇ m, the diameter of the particle ranges from 100 to 5,000 ⁇ m, the size of the particles is too large, significant difficulty in injection injection Not only that, but it is almost impossible to use for facial use.
- biocompatible, biodegradable polymer material that can induce collagen production, control the maintenance period for a long time, and maintain the volume right after the procedure like the existing hyaluronic acid filler, and can also be injected with needles with small particle size.
- polymer fillers that can minimize pain and foreign body feeling after injection.
- the present invention is to solve the problems of the above-mentioned conventional filler products, induce collagen generation after injection into the human body, and is a biodegradable polymer material with a long maintenance period, as well as maintaining the volume immediately after the procedure, like conventional hyaluronic acid fillers, It is a technical task to provide a polymer filler that can be injected with a needle that is smaller in size to minimize the pain and foreign body feeling that patients feel after injection.
- ii particle diameter is 10-200 ⁇ m
- iii) have pores with a diameter of 0.1 to 20 ⁇ m;
- Another aspect of the present invention is a porous fine particle of the biodegradable polymer; And one or more biocompatible carriers.
- the polymer filler according to the present invention can have a larger volume compared to the same mass as the existing product due to the porous polymer particles, it can provide an effect of maintaining the volume due to the volume of the polymer immediately after the procedure.
- the polymer filler of the present invention is mixed with a polymer particle and a carrier similarly to a conventional polymer filler, and like a conventional product, the carrier is absorbed first and the remaining polymer is slowly biodegraded to induce self-collagen production of surrounding tissues for a long time, thereby providing hyaluronic acid filler. Longer retention periods are indicated.
- the porous particulate polymer filler according to the present invention has almost no volume reduction effect because the volume of the polymer itself is larger than that of the existing polymer filler even when the carrier is absorbed first.
- by adjusting the porosity of the porous particles can be adjusted to provide a volume as desired by adjusting the degree of volume reduction immediately after the procedure.
- the biodegradable polymer filler according to the present invention can be used in various parts of the body including the face as a filler used in humans according to the particle size and porosity.
- the particle size can be injected with a needle that is small in size to minimize the pain and foreign body feeling after the injection.
- FIG. 1 is a scanning electron microscope (SEM) photograph of a specific example of porous fine particles of a biodegradable polymer used in the biodegradable polymer filler according to the present invention.
- Example 4 is a view showing the particle size and distribution of the fine particles according to Example 1 and Comparative Example 1 of the present invention.
- Example 5 is a photograph of the injection site after injecting the polymer filler prepared in Example 1 of the present invention and the filler of Comparative Example 1 into a rat.
- the polymer filler of the present invention uses porous fine particles of a biodegradable polymer made of a polymer having biocompatibility and biodegradability.
- biodegradable polymers that can be used in the preparation of porous fine particles of biodegradable polymers are polylactic acid (Poly (lactic acid)), polyglycolic acid (Poly (glycolic acid)), polydioxanone (Poly (dioxanone) )), Poly (caprolactone), Lactic acid-glycolic acid copolymer (Poly (lactic acid-co-glycolic acid)), Dioxanone-caprolactone copolymer (Poly (dioxanone-co-caprolactone) And lactic acid-caprolactone copolymers (Poly (lactic acid-co-caprolactone)), derivatives thereof, and copolymers thereof.
- they are polylactic acid or polycaprolactone, particularly preferably polycaprolactone.
- the biodegradable polymer may have a number average molecular weight (Mn) of preferably 10,000 to 1,000,000 g / mol, more preferably 10,000 to 100,000 g / mol in order to maintain the filler retention period for 2 years or more. .
- Mn number average molecular weight
- the particle size of the porous microparticles of the biodegradable polymer should be smaller than the diameter of the needle used to enable injection, and the shape of the particles is substantially spherical in shape so as not to cause pain and feel to the patient. to be.
- the particle size (particle diameter) of the porous fine particles of the biodegradable polymer may be typically 200 ⁇ m or less, and preferably has a diameter of 10 ⁇ m or more so as not to be phagocytized by macrophages in biological tissues.
- the porous microparticles of the biodegradable polymer have a diameter of less than 10-100 ⁇ m, more preferably 10-80 ⁇ m, even more preferably 10-50 ⁇ m, most preferably 20-40 ⁇ m.
- the porous fine particles of the biodegradable polymer have d 10, which is the basis of the particle size distribution, larger than 20 ⁇ m, d 90 smaller than 100 ⁇ m, preferably d 10 larger than 20 ⁇ m, and d 90 is 60 ⁇ m. Smaller, more preferably d 10 is larger than 25 ⁇ m and d 90 is smaller than 40 ⁇ m.
- the porous microparticles of the biodegradable polymer should have a span value of less than 1 indicating an even distribution of the particles, preferably less than 0.8, and more preferably less than 0.6.
- the span value is larger when the particle distribution is wider, and becomes closer to zero when the distribution is narrower.
- the span value is calculated by the following equation.
- D 10 , D 50 , D 90 Definition A particle size distribution curve representing the relative cumulative amount of particles by size, corresponding to 10%, 50%, and 90% of the maximum value in the cumulative distribution of the particles. Measured, plotted, and divided into 10 pieces, showing the size of particles corresponding to 1/10, 5/10, 9/10 respectively.
- the porous fine particles of the biodegradable polymer used in the present invention have pores, and thus have more volume to the same mass depending on the porosity.
- the porosity of the porous fine particles of the biodegradable polymer may be 5 to 50%, preferably 10 to 50%, more preferably 10 to 30%.
- the "porosity” is obtained by the following formula.
- Porosity (volume of porous polymeric microparticles-volume of nonporous polymeric microparticles) / volume of porous polymeric microparticles x 100
- the pore size (diameter) of the porous fine particles of the biodegradable polymer according to the present invention may be 0.1 ⁇ m ⁇ 20 ⁇ m, preferably 0.1 ⁇ 10 ⁇ m.
- the method for preparing porous microparticles of such biodegradable polymers may be emulsification, solvent evaporation, precipitation, or other methods generally used in the art, and the present invention is not limited by the method for preparing porous microparticles.
- the amount of the porous fine particles of the biodegradable polymer included in the polymer filler of the present invention may be 10 to 50% by weight, more specifically 10 to 30% by weight, based on 100% by weight of the polymer filler. It can be adjusted according to the desired volume effect of the injection site.
- the polymeric filler of the present invention also includes one or more biocompatible carriers. Such carriers are usually absorbed into the body within one to six months after injection.
- the biocompatible carrier may be selected from carboxymethyl cellulose, hyaluronic acid, dextran, collagen, and combinations thereof.
- the amount of the biocompatible carrier included in the polymer filler of the present invention may be 50 to 90% by weight, and more specifically 70 to 90% by weight, based on 100% by weight of the polymer filler.
- the biocompatible carrier may further include additive components normally included in the injection formulation, for example, a lubricant such as glycerin, a phosphate buffer, and the like.
- a lubricant such as glycerin, a phosphate buffer, and the like.
- the polymeric filler of the present invention may preferably be an injection formulation.
- the injection formulation of the polymer filler of the present invention can be provided in a sterile syringe or a sterile vial, it is easy to use because it does not require pretreatment, and is 100% biodegradable over a predetermined time after injection, so it is safe to leave no foreign substances in biological tissues. It does not cause allergies because it does not contain any animal-derived materials.
- the polymer filler of the present invention can produce more volume effect with the same amount of polymer compared to existing polymer products (eg, polymer ratio of 30%), so that the volume effect can be maintained even if the carrier is absorbed. Therefore, the polymer filler of the present invention can be preferably used for wrinkle improvement, face molding or body molding.
- PCL Polycaprolactone having a number average molecular weight of 50,000 g / mol was used to prepare porous fine particles (porosity: 10%) of a biodegradable polymer having a diameter of 20 to 40 ⁇ m by membrane emulsification. That is, 1 g of a biodegradable polymer and 0.2 g of tetradecane for pore formation were dissolved in 20 g of methylene chloride, and homogeneously mixed in an aqueous PVA solution to prepare porous fine particles of a biodegradable polymer having a porosity of 10%.
- the porous fine particles of the biodegradable polymer thus prepared were mixed with a carrier made of 3% by weight of carboxymethyl cellulose, 27% by weight of glycerin and 70% by weight of phosphate buffer. At this time, the mixing ratio was 30% by weight of the porous fine particles and 70% by weight of the carrier based on 100% by weight of the mixture.
- porous fine particles (porosity: 20%) of a biodegradable polymer having a diameter of 20 to 40 ⁇ m were prepared by membrane emulsification. That is, 1 g of biodegradable polymer and 0.3 g of tetradecane for pore formation were dissolved in 20 g of methylene chloride, and homogeneously mixed in an aqueous PVA solution to prepare porous microparticles of biodegradable polymer having a porosity of 20%.
- Porous microparticles of the prepared biodegradable polymer were mixed with a carrier made of 3% by weight of carboxymethyl cellulose, 27% by weight of glycerin and 70% by weight of phosphate buffer. At this time, the mixing ratio was 30% by weight of the porous fine particles and 70% by weight of the carrier based on 100% by weight of the mixture.
- PCL Polycaprolactone having a number average molecular weight of 50,000 g / mol was used to prepare porous fine particles (porosity: 10%) of a biodegradable polymer having a diameter of 20 to 40 ⁇ m by membrane emulsification. That is, 1 g of a biodegradable polymer and 0.2 g of tetradecane for pore formation were dissolved in 20 g of methylene chloride, and homogeneously mixed in an aqueous PVA solution to prepare porous fine particles of a biodegradable polymer having a porosity of 10%.
- Porous microparticles of the prepared biodegradable polymer were mixed with a carrier made of 3% by weight of carboxymethyl cellulose, 27% by weight of glycerin and 70% by weight of phosphate buffer. At this time, the mixing ratio was 40% by weight of the porous fine particles and 60% by weight of the carrier based on 100% by weight of the mixture.
- porous fine particles (porosity: 20%) of a biodegradable polymer having a diameter of 20 to 40 ⁇ m were prepared by membrane emulsification. That is, 1 g of biodegradable polymer and 0.3 g of tetradecane for pore formation were dissolved in 20 g of methylene chloride, and homogeneously mixed in an aqueous PVA solution to prepare porous microparticles of biodegradable polymer having a porosity of 20%.
- Porous microparticles of the prepared biodegradable polymer were mixed with a carrier made of 3% by weight of carboxymethyl cellulose, 27% by weight of glycerin and 70% by weight of phosphate buffer. At this time, the mixing ratio was 40% by weight of the porous fine particles and 60% by weight of the carrier based on 100% by weight of the mixture.
- porous microparticles (porosity: 10%) of a biodegradable polymer having a diameter of 20 to 40 ⁇ m were prepared by the Microfluidic method. That is, 1 g of biodegradable polymer PCL and 0.2 g of tetradecane for pore formation were dissolved in 20 g of methylene chloride, and microparticles of 10% porosity were prepared by using a microfluidic device. .
- the porous fine particles of the biodegradable polymer thus prepared were mixed with a carrier made of 3% by weight of carboxymethyl cellulose, 27% by weight of glycerin and 70% by weight of phosphate buffer. At this time, the mixing ratio was 30% by weight of the porous fine particles and 70% by weight of the carrier based on 100% by weight of the mixture.
- porous microparticles (porosity: 10%) of a biodegradable polymer having a diameter of 20 to 40 ⁇ m were prepared by the Microfluidic method. That is, 1 g of biodegradable polymer PCL and 0.3 g of tetradecane for pore formation were dissolved in 20 g of methylene chloride, and microfluidic devices were used to uniformly add PVA aqueous solution to prepare porous microparticles of biodegradable polymer having a porosity of 20%. .
- Porous microparticles of the prepared biodegradable polymer were mixed with a carrier made of 3% by weight of carboxymethyl cellulose, 27% by weight of glycerin and 70% by weight of phosphate buffer. At this time, the mixing ratio was 30% by weight of the porous fine particles and 70% by weight of the carrier based on 100% by weight of the mixture.
- porous fine particles (porosity: 10%) of a biodegradable polymer having a diameter of 20 to 40 ⁇ m were prepared by membrane emulsification. That is, 1 g of biodegradable polymer PLA and 0.2 g of tetradecane for pore formation were dissolved in 20 g of methylene chloride, and homogeneously mixed in an aqueous PVA solution to prepare porous microparticles of biodegradable polymer having a porosity of 10%.
- the porous fine particles of the biodegradable polymer thus prepared were mixed with a carrier made of 3% by weight of carboxymethyl cellulose, 27% by weight of glycerin and 70% by weight of phosphate buffer. At this time, the mixing ratio was 30% by weight of the porous fine particles and 70% by weight of the carrier based on 100% by weight of the mixture.
- Facial fillers were purchased from polylactic acid (PLA).
- the porous fine particles of the biodegradable polymer obtained in Example 1 and the fine particles of Comparative Examples 1 and 2 were observed by scanning electron microscope (SEM). The results are shown in FIGS. 1, 2 and 3, respectively.
- the porous fine particles of the biodegradable polymer according to the present invention have a particle diameter of 20 to 40 ⁇ m and a pore diameter of 0.1 to 6 ⁇ m, and thus have a smaller size and a smaller diameter uniformity than conventional products.
- the mixed formulation was filled in a syringe and then 200 ⁇ l injected into the back of the hairless mice.
- the polymer fillers prepared in Examples 1 to 7 and the polymer fillers of Comparative Examples 1 and 2 were injected into mice, and photographs of the injection sites for 2 weeks are shown in FIG. 5. The size of the injection-injected site was measured, and the size change was continuously measured at regular intervals. The results are shown in Table 2.
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Abstract
Description
Claims (11)
- i) 구형(spherical)이고,ii 입자 직경이 10 내지 200 ㎛이며;iii) 직경 0.1 내지 20 ㎛의 기공을 가지고;iv) 다공율이 5 내지 50%인, 생분해성 고분자의 다공성 미립자.
- 제1항에 있어서, 생분해성 고분자가 폴리락틱산, 폴리글리콜산, 폴리다이옥산온, 폴리카프로락톤, 락틱산-글리콜산 공중합체, 다이옥산온-카프로락톤 공중합체, 락틱산-카프로락톤 공중합체, 이들의 유도체 및 이들의 공중합체로 구성된 군에서 선택된 1종 이상인 것을 특징으로 하는 생분해성 고분자의 다공성 미립자.
- 제1항에 있어서, 생분해성 고분자의 수평균분자량(Mn)이 10,000~1,000,000 g/mol인 것을 특징으로 하는 생분해성 고분자의 다공성 미립자.
- 제1항에 있어서, 10~100 ㎛ 미만의 직경을 갖는 것을 특징으로 하는 생분해성 고분자의 다공성 미립자.
- 제1항에 있어서, d10이 20㎛보다 크고, d90은 100㎛보다 작은 것을 특징으로 하는 생분해성 고분자의 다공성 미립자.
- 제1항에 있어서, span 값이 1보다 작은 것을 특징으로 하는 생분해성 고분자의 다공성 미립자.
- 제1항 내지 제6항 중 어느 한 항에 따른 생분해성 고분자의 다공성 미립자; 및하나 이상의 생체적합성 캐리어;를 포함하는, 고분자 필러.
- 제7항에 있어서, 생체적합성 캐리어가 카르복시메틸셀룰로우스, 히알루론산, 덱스트란, 콜라겐 및 이들의 조합으로부터 선택되는 것을 특징으로 하는 고분자 필러.
- 제7항에 있어서, 고분자 필러 100중량%를 기준으로, 생분해성 고분자의 다공성 미립자의 함량이 10~50 중량%이고, 생체적합성 캐리어의 함량이 50~90 중량%인 것을 특징으로 하는 고분자 필러.
- 제7항에 있어서, 주사 제형으로 제조된 것을 특징으로 하는 고분자 필러.
- 제7항에 있어서, 주름 개선, 안면 성형 또는 바디 성형용으로 사용되는 것을 특징으로 하는 고분자 필러.
Priority Applications (10)
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RU2019121702A RU2737742C1 (ru) | 2016-12-13 | 2017-08-10 | Пористые микрочастицы биоразлагаемого полимера и полимерный наполнитель, их содержащий |
JP2019531828A JP6886518B2 (ja) | 2016-12-13 | 2017-08-10 | 生分解性高分子の多孔性微粒子、及びそれを含む高分子フィラー |
EP17881729.2A EP3556797A4 (en) | 2016-12-13 | 2017-08-10 | POROUS MICRO PARTICLES OF BIODEGRADABLE POLYMER AND POLYMER FILLING INCLUDING THEM |
UAA201908028A UA124117C2 (uk) | 2016-12-13 | 2017-08-10 | Пористі мікрочастинки біорозкладного полімеру і полімерний наповнювач, який їх містить |
MX2019006787A MX2019006787A (es) | 2016-12-13 | 2017-08-10 | Microparticulas porosas de polimero biodegradable y rellenador de polimero que comprende las mismas. |
BR112019011714-8A BR112019011714B1 (pt) | 2016-12-13 | 2017-08-10 | Micropartícula porosa de polímero biodegradável, e, carga de polímero |
US16/468,828 US11406733B2 (en) | 2016-12-13 | 2017-08-10 | Porous microparticles of biodegradable polymer, and polymer filler comprising same |
CN201780076772.5A CN110072921B (zh) | 2016-12-13 | 2017-08-10 | 生物降解性高分子的多孔性微粒及包含其的高分子填充物 |
AU2017377761A AU2017377761B2 (en) | 2016-12-13 | 2017-08-10 | Porous microparticles of biodegradable polymer, and polymer filler comprising same |
IL266983A IL266983B2 (en) | 2016-12-13 | 2019-05-29 | Porous microparticles of a naturally degradable polymer and a polymer filler containing them |
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KR10-2017-0099514 | 2017-08-07 | ||
KR1020170099514A KR101942449B1 (ko) | 2016-12-13 | 2017-08-07 | 생분해성 고분자의 다공성 미립자, 및 이를 포함하는 고분자 필러 |
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