WO2016093211A1 - 創傷治療用ガラス組成物、創傷被覆材及びその製造方法 - Google Patents
創傷治療用ガラス組成物、創傷被覆材及びその製造方法 Download PDFInfo
- Publication number
- WO2016093211A1 WO2016093211A1 PCT/JP2015/084358 JP2015084358W WO2016093211A1 WO 2016093211 A1 WO2016093211 A1 WO 2016093211A1 JP 2015084358 W JP2015084358 W JP 2015084358W WO 2016093211 A1 WO2016093211 A1 WO 2016093211A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass
- wound
- cotton
- glass composition
- wound dressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/44—Medicaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/06—Aluminium, calcium or magnesium; Compounds thereof, e.g. clay
- A61K33/08—Oxides; Hydroxides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/22—Boron compounds
-
- 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
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/06—Manufacture of glass fibres or filaments by blasting or blowing molten glass, e.g. for making staple fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
- C03C3/19—Silica-free oxide glass compositions containing phosphorus containing boron
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/0007—Compositions for glass with special properties for biologically-compatible glass
- C03C4/0014—Biodegradable glass
-
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
-
- 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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
- A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2204/00—Glasses, glazes or enamels with special properties
- C03C2204/02—Antibacterial glass, glaze or enamel
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2213/00—Glass fibres or filaments
- C03C2213/02—Biodegradable glass fibres
Definitions
- the present invention relates to a glass composition that exhibits an excellent healing effect on wounds such as cuts, lacerations, bruises, burns, and pressure sores, a wound dressing produced using the composition, and a method for producing the same.
- Non-Patent Document 1 So instead of performing treatment with disinfectant and gauze, plastic surgeon Natsuki et al. Proposed a treatment method that moist wound healing that keeps the moist environment of the wound surface and promotes cell proliferation. Widely used.
- Wound dressing is also called dressing and is used to maintain a moist environment on the wound surface in wound treatment.
- wound dressings include polyurethane film, hydrocolloid dressing, polyurethane foam dressing, alginate dressing, etc. These products retain blood or exudate flowing from the wound surface and maintain a moist environment This has the effect of promoting the division and migration of epidermal cells.
- Wound dressings such as polyurethane films, hydrocolloid dressings, polyurethane foam dressings, and alginate dressings retain exudate that flows out of the wound surface and maintain a moist environment to promote epithelial cell division and migration. Yes, it is possible to maximize the natural healing power of the patient.
- these wound dressings should be used for patients with low healing ability such as the elderly, when the wound is a pressure ulcer, when the volume and area of the wound opening is large, or when continuous force is applied to the wound surface. Even if treated, it takes a considerable amount of time to heal. An increase in healing time may cause a large amount of exudate to flow out or abnormal production of collagen, which may cause inflammation of the epidermis or scar formation.
- the present invention has been made in view of the above circumstances, and promotes the wound healing process by providing a moist environment and nutrients necessary for the proliferation of epidermal cells, and prevents critical colonization and infection of bacteria on the wound surface.
- An object of the present invention is to provide a glass composition for wound treatment having bactericidal properties and a wound dressing using the same.
- Wound care glass composition of the present invention in mass% of oxide equivalent, SiO 2 5 ⁇ 70%, Al 2 O 3 0 ⁇ 10%, B 2 O 3 5 ⁇ 40.0%, CaO 1 ⁇ 50 %.
- for wound treatment refers to an application used in all forms for wound treatment, including the case of covering and treating a wound.
- composition for wound treatment of the present invention having the above configuration has biocompatibility. Moreover, it dissolves in blood or exudate that flows out from the wound surface, and can supply Ca (calcium), which is a nutrient of epidermal cells, and B (boron), which has a bactericidal effect on bacteria, to the wound surface.
- Ca calcium
- B boron
- the glass composition for wound treatment of the present invention is expressed in terms of mass% in terms of oxide, and further MgO 0-20%, Na 2 O 0-20%, K 2 O 0-40%, P 2 O 5 0- It is preferable to contain 20%.
- the glass composition for wound treatment of the present invention it is preferable that it is Na 2 O + K 2 O 5-40% by mass% in terms of oxide.
- Na 2 O + K 2 O means the total content of Na 2 O and K 2 O.
- a glass having a specific gravity of 0.256 weight classified to a particle size of 300 to 500 ⁇ m is immersed in a simulated body fluid at 37 ° C. for 2 days for 2 days.
- the B concentration in the simulated body fluid is 0.1 mM or more and the Ca concentration is 3.8 mM or more.
- liquid phase viscosity is 10 0.5 dPa * s or more.
- the “liquid phase viscosity” is a value obtained by the following method. First, a massive glass sample is pulverized and adjusted to have a particle size in the range of 300 to 500 ⁇ m. Next, the crushed glass sample is filled in a fireproof container in a state having an appropriate bulk density. Subsequently, this refractory container is placed in an indirect heating type temperature gradient furnace, left to stand, and subjected to a heating operation in an air atmosphere for 16 hours. The test specimen is taken out from the temperature gradient furnace together with the refractory container and cooled to room temperature. To do.
- the glass sample is observed with an optical microscope to determine the crystal precipitation location, and the crystal precipitation temperature (liquidus temperature) is specified from the temperature distribution information in the temperature gradient furnace.
- the crystal precipitation temperature liquidus temperature
- the viscosity corresponding to the crystal precipitation temperature is obtained from a separately prepared viscosity curve.
- the temperature corresponded to the viscosity of 10 1.0 dPa * s is 1500 degrees C or less.
- “temperature corresponding to a viscosity of 10 1.0 dPa ⁇ s” is a value obtained by the following method. First, a massive glass sample is crushed to an appropriate size and put into an alumina crucible so that bubbles are not caught as much as possible. Subsequently, the alumina crucible is heated to bring the sample into a molten state, and measured values of the viscosity of the glass at a plurality of temperatures are obtained by a platinum ball pulling method.
- the measured value of the glass viscosity was used to calculate a constant of the Vogel-Fulcher formula to create a viscosity curve viscosity curve, and the measurement was performed by a method of calculating a temperature of 10 1.0 dPa ⁇ s by interpolation. Refers to temperature.
- the viscosity of 10 1.0 dPa ⁇ s is a viscosity suitable for fiberization by a melt blow method or the like, and a temperature corresponding to this viscosity is referred to as “spinning temperature” in the present invention.
- the wound dressing of the present invention is characterized by being a cotton-like body or a nonwoven fabric made of the glass composition described above.
- the “cotton-like body” refers to an irregular fiber mass in which a large number of fibers are intertwined irregularly and can be compressed three-dimensionally by voids existing between the fibers.
- “Nonwoven fabric” refers to a cotton-like compressed body in which a large number of fibers are irregularly entangled and formed into a sheet or cloth.
- the wound dressing material of the present invention having the above-described structure can retain exudate flowing out from the wound surface while providing Ca that is a nutrient for epidermal cells and B having a bactericidal effect on bacteria. It can provide a moist environment necessary for cell growth.
- the wound dressing when used for treatment of a wound surface with a large amount of exudate, it is preferably used in the form of a cotton-like body. If used in the form of a cotton-like body, the amount of water absorbed by the wound dressing increases, and it is possible to prevent skin dandruff associated with an excessively moist environment. Furthermore, troubles that the exudate flows out of the wound are less likely to occur.
- it when used for treatment of a wound surface with little exudate, it is preferably used in the form of a nonwoven fabric. If used in the form of a non-woven fabric, the water absorption of the wound dressing material can be reduced, and the wound surface can be prevented from drying.
- the average fiber diameter of the glass fibers constituting the cotton-like body or the nonwoven fabric is preferably 100 nm to 10 ⁇ m.
- the “average fiber diameter of the glass fiber” refers to the length measurement function of the scanning electron microscope by taking a secondary electron image or a reflected electron image of the glass fiber using a scanning electron microscope (HITACHI s-3400N type II). The diameter of 50 glass fibers was measured by using and the average value was determined by the method of making the average fiber diameter.
- glass beads are mixed in the cotton-like body or non-woven fabric, and the mixed amount is preferably 50% or less of the entire cotton-like body or non-woven fabric based on mass%.
- glass beads refers to those in which the molten glass has become substantially spherical due to surface tension.
- the “mixed amount of glass beads” is a predetermined amount of the cotton-like or non-woven fabric weighed, poured into a beaker, injected with alcohol, stirred for 3 minutes using a magnetic stirrer, for example, until the beads settled after stirring was stopped.
- the average diameter of the glass beads is preferably 500 ⁇ m or less.
- the “average diameter of glass beads” is obtained by measuring the diameters of 50 beads using the length measuring function of an optical microscope and setting the average value as the average diameter of glass beads.
- the specific surface area of the glass beads increases, and it becomes easy to secure a sufficient amount of dissolution in the body fluid. Moreover, since the feeling of roughness of the cotton-like body or the nonwoven fabric is reduced, it becomes difficult to cause inflammation of the epidermis and scar formation. Moreover, the pain of the patient at the time of embedding in a wound surface can be reduced.
- the method for producing a wound dressing according to the present invention comprises melting a raw material batch prepared so as to be the glass composition described above in a glass melting furnace and continuously flowing out the molten glass from the glass discharge nozzle.
- the glass is formed into a cotton shape by injecting air around.
- the method of the present invention having the above configuration employs a so-called melt-blowing method in which air is blown to molten glass and the glass is blown away, so that a cotton-like wound dressing material in which fibers are intertwined can be easily obtained. Can do.
- the method of this invention uses the glass which has an above-described composition and characteristic, the wound dressing obtained has a high wound treatment effect.
- the manufacturing method of the wound dressing material of this invention is characterized by compressing the glass shape
- SiO 2 is a main component that forms a glass skeleton structure. Moreover, it is a component which raises the viscosity of glass. Further, it is a component that greatly reduces the melting rate of glass.
- the content of SiO 2 is 5 to 70%, preferably 5 to 50%, more preferably 8 to 45%, particularly preferably 10 to 35%, more preferably 10 to 30%, most preferably 10 to 25%. is there. If the content of SiO 2 is too large, the dissolution rate of glass with respect to blood or exudate decreases, and it becomes difficult to obtain the cell proliferation effect and bactericidal effect required as a wound dressing.
- the fiberizing temperature (temperature corresponding to a viscosity of 10 1.0 dPa ⁇ s) increases and the cost for fiberizing increases. If the content of SiO 2 is too small, the viscosity of the glass is lowered, the liquid phase viscosity is remarkably lowered, and the amount of mixed beads is increased when molded into a cotton-like or nonwoven fabric. In addition, since the mechanical strength of the glass is reduced and the flocculent body is easily compressed, and it becomes impossible to secure the necessary space in the flocculent body, the amount of blood or exudate retained decreases, and the wet environment is reduced. It becomes difficult to maintain.
- Al 2 O 3 is a component having an effect of suppressing crystal crystallization and phase separation in molten glass.
- the content of Al 2 O 3 is 0 to 10%, preferably 0 to 5%, more preferably 0 to 3%. If the content of Al 2 O 3 is too large, the dissolution rate of glass into blood or exudate is reduced. Moreover, the fiberization temperature becomes high and the cost for fiberizing increases.
- B 2 O 3 is in the glass network structure similar to the SiO 2, is a component that forms the skeleton, rather than by increasing the melting temperature of the glass as SiO 2, there is work to rather lower the melting temperature . Moreover, it is a component which exhibits a bactericidal effect by eluting into blood or exudate. Furthermore, it is a component that greatly increases the melting rate of glass.
- the content of B 2 O 3 is 5 to 40.0%, preferably 10 to 39%, 15 to 35%, 19 to 30%, 19 to 27%, particularly 19 to 25%. If the content of B 2 O 3 is too small, it will not be possible to obtain bactericidal properties to prevent critical colonization of the wound surface and infection.
- the dissolution rate of the glass is lowered, and it becomes difficult to obtain the cell proliferation effect and bactericidal effect necessary as a wound dressing.
- B 2 O 3 rate of wound healing worked excessive bactericidal effect on the wound surface as well when the content is too much is reduced.
- the viscosity of glass falls or a liquid phase viscosity becomes low, when producing a wound dressing by methods, such as a melt blow method, the amount of bead mixture increases.
- CaO is a component that lowers the viscosity of glass, and is a component that exhibits an effect of promoting cell growth when eluted into blood or exudate.
- the CaO content is 1 to 50%, preferably 10 to 45%, more preferably 15 to 40%, particularly preferably 18 to 38%, still more preferably 23 to 38%, and most preferably 28 to 38%. . If the content of CaO is too small, it is difficult to obtain the effect of promoting cell growth. When there is too much content of CaO, liquidus temperature will become high, it will devitrify at the time of glass melting, and it will become difficult to obtain homogeneous glass.
- MgO is a component having a function as a flux that makes it easy to melt glass raw materials, and at the same time, is very effective in lowering the melting temperature. It is a useful ingredient.
- the content of MgO is preferably 0 to 20%, more preferably 0 to 10%, still more preferably 0.5 to 8%. If the MgO content is too high, the viscosity of the glass is lowered and the liquid phase viscosity is lowered. Therefore, when the wound dressing is produced by a method such as a melt blow method, the amount of mixed beads increases. Furthermore, the elution amount of Mg (magnesium) into blood or exudate increases, and the elution amount of Ca relatively decreases remarkably.
- Na 2 O is an alkali metal oxide
- K 2 O reduces the viscosity of the glass is a component for enhancing the meltability and formability.
- the total content of Na 2 O and K 2 O (Na 2 O + K 2 O) is preferably 5 to 40%, more preferably 10 to 30%, and even more preferably 15 to 25%.
- Na 2 O + K 2 O is too small, the cost for fiberizing higher spinning temperature of the glass increases.
- the elution amount of Na (sodium) and K (potassium) into blood or exudate increases, and the elution amount of Ca is remarkably lowered.
- the viscosity of glass falls or a liquid phase viscosity becomes remarkably low, when producing a wound dressing by a method such as a melt blow method, the amount of mixed beads increases.
- Na 2 O is a component that improves the meltability and moldability of the glass by reducing the viscosity of the glass.
- the content of Na 2 O is preferably 0 to 20%, more preferably 2 to 15%, and further preferably 4 to 10%.
- the viscosity of the glass is lowered and the liquid phase viscosity is remarkably lowered. Therefore, when the wound dressing is produced by a method such as a melt-blowing method, the amount of mixed beads increases. . Furthermore, the elution amount of Na into the blood or exudate increases, and the elution amount of Ca relatively decreases remarkably.
- K 2 O is a component that improves the meltability and moldability of the glass by reducing the viscosity of the glass.
- the content of K 2 O is preferably 0 to 40%, more preferably 5 to 30%, still more preferably 7 to 20%, and particularly preferably 7 to 15%. If the content of K 2 O is too large, the viscosity of the glass will decrease and the liquid phase viscosity will be significantly reduced. Therefore, when the wound dressing is produced by a method such as the melt-blowing method, the amount of beads mixed will increase. To do. Furthermore, the elution amount of K into the blood or exudate increases, and the elution amount of Ca relatively decreases remarkably.
- P 2 O 5 is a component that vitrifies itself and constitutes the network of the glass.
- the content of P 2 O 5 is preferably 0 to 20%, more preferably 0 to 10%, and still more preferably 0 to 5%.
- P 2 O 5 content is too large, decrease the rate of dissolution in blood or exudate glass. Furthermore, it becomes easy to form a reaction layer containing P (phosphorus) and Ca on the surface of the molten glass, and the dissolution of the glass is inhibited, or a part of Ca is consumed for the formation of the reaction layer. Elution amount decreases.
- the dissolution rate of glass varies depending on the molar ratio (B / Si) of Si (silicon) and B (boron) in the glass composition.
- B / Si the molar ratio of Si (silicon) and B (boron) in the glass composition.
- B / Si it is necessary to increase the B 2 O 3 content of the glass. As a result, the amount of B elution increases and an excessive sterilizing effect works.
- the value of B / Si is preferably 0.1 to 20.0, more preferably 0.2 to 10.0, particularly preferably 0.3 to 9.0, still more preferably 0.5 to 5.0, Most preferably, it is 1.0 to 3.0.
- B / Si is too small, it becomes difficult to obtain the cell proliferation effect and bactericidal effect required as a wound dressing.
- B / Si is too large, an excessive bactericidal effect works and cell proliferation is suppressed.
- components other than the above-described components can be included.
- the dissolution rate of the glass into the blood or exudate of Ca and B decreases due to unintentional mixing of different components, and the properties as a wound dressing decrease. This is because inconveniences such as a decrease in the liquid phase viscosity and an increase in the amount of mixed beads or a decrease in biocompatibility are likely to occur.
- trace components such as H 2 , CO 2 , CO, H 2 O, He, Ne, Ar, and N 2 may be contained up to 0.1%.
- noble metal elements such as Pt, Rh, and Au, up to 500 ppm in glass.
- Cu, Ag, Zn, Sr, Ba, Fe, F, Mo, Au, Mn, Sn, Ce, Cl, La, W, Nb, Y, etc. can be combined up to 2%. You may contain.
- a glass having a specific gravity of 0.256 weight classified to a particle size of 300 to 500 ⁇ m is immersed in a simulated body fluid at 37 ° C. for 2 days for 2 days.
- the B concentration in the simulated body fluid is 0.1 mM or more and the Ca concentration is 3.8 mM or more.
- the B concentration in the simulated body fluid by this dissolution test is less than 0.1 mM, or when the Ca concentration is less than 3.8 mM, it becomes difficult to obtain the cell proliferation effect and bactericidal effect required as a wound dressing.
- the glass composition for wound treatment of the present invention preferably has a liquidus viscosity of 10 0.5 dPa ⁇ s or more, 10 0.8 dPa ⁇ s or more, 10 1.0 dPa ⁇ s or more, 10 1.2 dPa or more. ⁇ S or more, in particular 10 1.4 dPa ⁇ s or more. If the liquidus viscosity is too low, the amount of glass beads mixed in when a molten glass is made into a fiber and a cotton-like body or nonwoven fabric is produced increases.
- the glass composition for wound treatment of the present invention has a temperature (spinning temperature) corresponding to a viscosity of 10 1.0 dPa ⁇ s, preferably 1500 ° C. or lower, 1400 ° C. or lower, 1300 ° C. or lower, particularly 1200 ° C. or lower. . If the spinning temperature is too high, it is necessary to perform spinning at a high temperature, so that the spinning device made of precious metal is severely damaged, the replacement frequency is increased, and the production cost is increased.
- the wound dressing of the present invention comprises a wound treatment glass composition having the composition and characteristics described above. More specifically, it is an irregular cotton-like body or non-woven fabric in which a large number of glass fibers having the above composition and characteristics are irregularly entangled. Note that the cotton-like body can be compressed three-dimensionally due to the voids existing between the fibers.
- the glass fiber constituting the wound dressing may have a non-uniform fiber diameter, but the average fiber diameter is preferably in the range of 100 nm to 10 ⁇ m, particularly preferably in the range of 500 to 5 ⁇ m.
- the average fiber diameter is too small, the mechanical strength of the glass fiber is lowered.
- the flocculent body is easily compressed, so that the amount of blood or exudate retained is reduced, making it difficult to maintain a moist environment. If the average fiber diameter becomes too large, the specific surface area of the cotton-like body or non-woven fabric becomes small, so the dissolution rate of the glass decreases, making it difficult to sufficiently provide Ca or B to blood or exudate, The properties as a coating material are reduced.
- Glass beads may be mixed in the cotton-like body or non-woven fabric constituting the wound dressing.
- the ratio of the glass beads to the cotton-like body or the nonwoven fabric is preferably 50% or less, 40% or less, particularly 30% or less in mass%. If the ratio of the glass beads increases too much, the specific surface area of the cotton-like body or the nonwoven fabric decreases, so the dissolution rate of the glass decreases and it becomes difficult to sufficiently provide Ca or B to the blood or exudate. The characteristics as a wound dressing are reduced. There is also a concern that glass beads may irritate the epidermis and cause inflammation and scar formation of the epidermis. Furthermore, it may be painful for the patient when it is placed in the wound surface.
- the average diameter of the glass beads is preferably 500 ⁇ m or less, particularly preferably 100 ⁇ m or less. If the average diameter of the glass beads is too large, the specific surface area of the cotton-like body or non-woven fabric will be reduced, so that the dissolution rate of the glass will be reduced, making it difficult to sufficiently provide Ca or B to the blood or exudate. The characteristics as a wound dressing are reduced. There is also a concern that glass beads may irritate the epidermis and cause inflammation and scar formation of the epidermis. Furthermore, it may be painful for the patient when it is placed in the wound surface.
- the wound dressing of the present invention may contain glass bodies having various shapes such as powder and flakes in addition to glass fibers and glass beads. Moreover, various chemical
- medical agents can also be added and impregnated in a cotton-like body or a nonwoven fabric.
- the wound dressing of the present invention can be produced by a method other than the melt blow method.
- a high voltage is applied between a glass discharge nozzle and a target electrode arranged so as to face the nozzle member, and the charged molten glass discharged from the discharge nozzle is drawn toward the electrode member while being fibrous.
- the so-called electrospinning method or the molten glass is flowed down from the fore hearth and introduced into a spinner (rotary body), and the spinner is rotated at a high speed to discharge the fibrous glass from an orifice provided on the side wall of the spinner.
- a so-called centrifugation method can also be employed.
- glass raw materials are prepared so that the glass having the above composition is obtained.
- Glass cullet may be used for a part or all of the glass raw material.
- the glass composition and its characteristics are as described above, and the description is omitted here.
- the melting temperature is preferably about 1200 to 1600 ° C.
- molten glass is spun and formed into glass fibers. More specifically, the molten glass is supplied to a noble metal nozzle member having a discharge nozzle for discharging the molten glass.
- the molten glass supplied to the nozzle member flows down from one or more glass discharge nozzles provided on the bottom surface.
- the wound dressing composed of cotton-like glass fibers is formed by stretching and forming into a fiber shape. Obtainable. Furthermore, the cotton-like body produced in this way is compressed into a nonwoven fabric.
- a method of continuously depositing on a conveyor having a metal net to have a uniform thickness and compressing with a roller can be used.
- the inner diameter of the glass discharge nozzle is preferably 2 mm or less, more preferably 1.5 mm or less, and even more preferably 1.0 mm or less.
- the temperature of the high-speed air is preferably 500 ° C. or higher, more preferably 800 ° C. or higher, and still more preferably 900 ° C. or higher.
- the characteristics of the wound dressing are as described above, and the description thereof is omitted here.
- the glass composition for wound treatment of the present invention is not limited to use as a wound dressing as described above.
- it may be formed into a powder shape, ribbon shape, flake shape, hollow sphere shape, etc. and used for various purposes.
- it can be formed into a powder and mixed with an ointment such as petrolatum, cream, lotion, etc., and used on the wound surface.
- Tables 1 to 5 show examples of the present invention (sample Nos. 1 to 17 and 21 to 25) and comparative examples (sample Nos. 18 to 20).
- various glass raw materials such as natural raw materials and chemical raw materials were weighed and mixed so as to have the glass composition in each table to prepare a glass batch.
- this glass batch was put into a platinum rhodium alloy crucible and then heated at 1200 to 1550 ° C. for 4 hours in an indirect heating electric furnace to obtain a molten glass.
- the molten glass was stirred a plurality of times using a heat-resistant stirring rod during heating.
- the obtained molten glass was poured into a refractory mold and allowed to cool in air to obtain a massive glass sample.
- the elution test was done and B and Ca density
- the massive glass sample is put into a noble metal pot equipped with a glass discharge nozzle, and the glass sample is remelted by energization heating. Thereafter, high-speed air was blown onto the glass flowing down from the discharge nozzle, and the molten glass was drawn into fibers to obtain a cotton-like body. Thus, the average fiber diameter of the glass fiber which comprises the cotton-like body obtained was measured.
- the dissolution test was measured as follows. First, a massive glass sample is pulverized, glass having a particle size of 300 to 500 ⁇ m is precisely weighed by a specific gravity of 0.256, and then 60 ml of a simulated body fluid is placed in a polypropylene container (PP container) having a capacity of 100 ml. A glass sample was immersed, and an elution test was performed at 37 ° C. for 2 days. At that time, stirring was performed once / day. Stirring was performed by shaking the PP container by hand several times. After the dissolution test, the test solution was filtered, and the concentrations of B and Ca in the eluate were quantified using ICP-OES.
- PP container polypropylene container
- the simulated body fluid was prepared as follows. First, a beaker containing 100 ml of distilled water was set on a stirrer. Each reagent (7.995 g / L NaCl, 0.353 g / L NaHCO 3 , 0.224 g / L KCl, 0.174 g / L K 2 HPO 4 , 0.305 g / L MgCl 2. 6H 2 O, 0.368 g / L CaCl 2 ⁇ 2H 2 O, 0.071 g / L Na 2 SO 4 ), and after each reagent is completely dissolved, add the next reagent to distilled water in order. And dissolved to prepare a solution.
- Each reagent (7.995 g / L NaCl, 0.353 g / L NaHCO 3 , 0.224 g / L KCl, 0.174 g / L K 2 HPO 4 , 0.305 g / L MgCl 2. 6H 2 O, 0.368 g
- the reagent attached to the medicine wrapper was dissolved in the solution with distilled water.
- 90 ml of distilled water was added to 10 ml of 35% hydrochloric acid to prepare diluted hydrochloric acid, which was added little by little to the solution until it became turbid.
- the solution was then transferred to a 2 L beaker and 825 ml of distilled water was added and stirred with a hot stirrer.
- a pH meter was prepared, and diluted hydrochloric acid was gradually added with a dropper to obtain pH 2.
- the spinning temperature was measured as follows. First, a blocky glass sample was crushed to an appropriate size and put into an alumina crucible so that bubbles were not caught as much as possible. Subsequently, the alumina crucible was heated to bring the sample into a molten state, and the viscosity of the glass at a plurality of temperatures was determined by a platinum ball pulling method. Then, a viscosity curve was created from the obtained plurality of measured values, and a temperature at which 10 1.0 dPa ⁇ s was obtained was calculated by interpolation.
- the liquid phase temperature was measured as follows. First, a massive glass sample was pulverized and filled in a fire-resistant container with an appropriate bulk density in a state adjusted to have a particle size in the range of 300 to 500 ⁇ m. Subsequently, the refractory container was placed in an indirect heating type temperature gradient furnace and allowed to stand, and a heating operation was performed in an air atmosphere for 16 hours. Thereafter, the test specimen is taken out from the temperature gradient furnace together with the refractory container, cooled to room temperature, the crystal precipitation location is determined by an optical microscope, and the crystal precipitation temperature (liquid phase) is determined using the temperature distribution in the temperature gradient furnace prepared in advance. The liquid phase temperature was specified by a method for obtaining the temperature.
- the average fiber diameter was measured as follows. First, a secondary electron image or a reflected electron image of a glass fiber is taken using a scanning electron microscope (HITACHI s-3400N type II). The diameter of 50 glass fibers was measured using the length measuring function of the scanning electron microscope, and the average value was taken as the average fiber diameter.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pharmacology & Pharmacy (AREA)
- Medicinal Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hematology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Ceramic Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Molecular Biology (AREA)
- Glass Compositions (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
また本発明の創傷被覆材の製造方法は、綿状に成形されたガラスを圧縮して不織布に成形することを特徴とする。
表1~5は、本発明の実施例(試料No.1~17、21~25)及び比較例(試料No.18~20)を示している。
Claims (12)
- 酸化物換算の質量%で、SiO2 5~70%、Al2O3 0~10%、B2O3 5~40.0%、CaO 1~50%を含有することを特徴とする創傷治療用ガラス組成物。
- 酸化物換算の質量%で、さらにMgO 0~20%、Na2O 0~20%、K2O 0~40%、P2O5 0~20%を含有することを特徴とする請求項1に記載の創傷治療用ガラス組成物。
- 酸化物換算の質量%で、Na2O+K2O 5~40%であることを特徴とする請求項1又は2に記載の創傷治療用ガラス組成物。
- 300~500μmの粒度に分級された比重×0.256の重量分のガラスを37℃、60mlの擬似体液中に2日間浸漬し、1回/日の撹拌を行った溶出試験において、擬似体液中のB濃度が0.1mM以上かつCa濃度が3.8mM以上となることを特徴とする請求項1~3の何れかに記載の創傷治療用ガラス組成物。
- 液相粘度が100.5dPa・s以上であることを特徴とする請求項1~4の何れかに記載の創傷治療用ガラス組成物。
- 101.0dPa・sの粘度に相当する温度が1500℃以下であることを特徴とする請求項1~5の何れかに記載の創傷治療用ガラス組成物。
- 請求項1~6の何れかに記載のガラス組成物からなる綿状体又は不織布であることを特徴とする創傷被覆材。
- 綿状体又は不織布を構成するガラス繊維の平均繊維径が100nm~10μmであることを特徴とする請求項7に記載の創傷被覆材。
- 綿状体又は不織布中にガラスビーズが混入しており、その混入量が質量%基準で綿状体全体の50%以下であることを特徴とする請求項7又は8に記載の創傷被覆材。
- ガラスビーズの平均直径が500μm以下であることを特徴とする請求項9に記載の創傷被覆材。
- 請求項1~6の何れかのガラス組成物となるように調合した原料バッチをガラス溶融炉で溶融し、溶融ガラスをガラス吐出ノズルから連続的に流出させるとともに、前記ガラス吐出ノズル周囲にエアーを噴射して、ガラスを綿状に成形することを特徴とする創傷被覆材の製造方法。
- 綿状に成形されたガラスを圧縮して不織布に成形することを特徴とする請求項11に記載の創傷被覆材の製造方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/533,781 US20170326266A1 (en) | 2014-12-11 | 2015-12-08 | Glass composition for wound care, wound covering material, and method for producing same |
| CN201580067682.0A CN107001122A (zh) | 2014-12-11 | 2015-12-08 | 创伤治疗用玻璃组合物、创伤覆盖材料及其制造方法 |
| JP2016563675A JPWO2016093211A1 (ja) | 2014-12-11 | 2015-12-08 | 創傷治療用ガラス組成物、創傷被覆材及びその製造方法 |
| EP15866495.3A EP3231776A4 (en) | 2014-12-11 | 2015-12-08 | Glass composition for wound healing, wound covering material, and method for producing same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014250542 | 2014-12-11 | ||
| JP2014-250542 | 2014-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016093211A1 true WO2016093211A1 (ja) | 2016-06-16 |
Family
ID=56107392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2015/084358 Ceased WO2016093211A1 (ja) | 2014-12-11 | 2015-12-08 | 創傷治療用ガラス組成物、創傷被覆材及びその製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170326266A1 (ja) |
| EP (1) | EP3231776A4 (ja) |
| JP (1) | JPWO2016093211A1 (ja) |
| CN (1) | CN107001122A (ja) |
| WO (1) | WO2016093211A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017114722A (ja) * | 2015-12-24 | 2017-06-29 | 日本電気硝子株式会社 | 創傷被覆材 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW202038887A (zh) | 2018-11-20 | 2020-11-01 | 美商康寧公司 | 生物活性硼酸鹽玻璃 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005501113A (ja) * | 2001-08-22 | 2005-01-13 | カール−ツァイス−スティフツング | 炎症を抑えて傷を癒す抗菌性のガラス粉末ならびにその使用方法 |
| JP2011524324A (ja) * | 2008-05-27 | 2011-09-01 | インペリアル イノベーションズ リミテッド | 低酸素誘導因子(hif)安定化ガラス |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2842458A (en) * | 1954-05-28 | 1958-07-08 | O Hommel Company | Low temperature vitreous coatings for steel |
| DE3016114A1 (de) * | 1980-04-25 | 1981-10-29 | Rheinhold & Mahla Gmbh, 6800 Mannheim | Verfahren und vorrichtung zur herstellung von mineralwollefasern |
| DE3026605C2 (de) * | 1980-07-14 | 1983-07-07 | Schott Glaswerke, 6500 Mainz | Säurefestes, hydrolytisch beständiges optisches und ophthalmisches Borosilikat-Glas geringer Dichte |
| DE3121824C2 (de) * | 1981-06-02 | 1984-06-14 | Schott Glaswerke, 6500 Mainz | Säurefestes, hydrolytisch beständiges optisches und ophthalmisches Glas geringer Dichte |
| JPS60221338A (ja) * | 1984-04-12 | 1985-11-06 | Ohara Inc | 光学ガラス |
| DE4136975A1 (de) * | 1991-01-23 | 1992-07-30 | Schott Glaswerke | Optisches und ophtalmisches glas mit einem brechwert nd >= 1,68 und einer abbezahl (ny)(pfeil abwaerts)d(pfeil abwaerts) >= 41,6 |
| JPH0585771A (ja) * | 1991-03-29 | 1993-04-06 | Nippon Electric Glass Co Ltd | 中空ガラス球用組成物 |
| DE4242859C2 (de) * | 1992-08-03 | 1994-08-25 | Schott Glaswerke | Hochbrechendes ophtalmisches und optisches Leichtgewichtsglas |
| IS4284A (is) * | 1994-05-17 | 1995-11-18 | Isover Saint-Gobain | Samsetning glerullartrefja |
| JP3820486B2 (ja) * | 1995-09-18 | 2006-09-13 | Hoya株式会社 | ガラス光学素子の製造方法 |
| US6001494A (en) * | 1997-02-18 | 1999-12-14 | Technology Partners Inc. | Metal-ceramic composite coatings, materials, methods and products |
| US6482444B1 (en) * | 1999-06-14 | 2002-11-19 | Imperial College Innovations | Silver-containing, sol/gel derived bioglass compositions |
| WO2001040128A1 (en) * | 1999-11-29 | 2001-06-07 | Nippon Electric Glass Co., Ltd. | Tungsten seal glass for fluorescent lamp |
| WO2004076369A2 (de) * | 2003-02-25 | 2004-09-10 | Schott Ag | Antimikrobiell wirkendes brosilicatglas |
| DE112004000094A5 (de) * | 2003-02-25 | 2008-04-03 | Schott Ag | Antimikrobiell wirkendes Borosilicatglas |
| JP2004262699A (ja) * | 2003-02-28 | 2004-09-24 | Ishizuka Glass Co Ltd | 抗菌機能を有するガラス組成物 |
| ITMO20030173A1 (it) * | 2003-06-13 | 2004-12-14 | Franco Ambri | Procedimento per l'ottenimento di un preparato fertilizzante |
| JP4429295B2 (ja) * | 2005-09-06 | 2010-03-10 | 株式会社オハラ | 光学ガラス |
| WO2007029434A1 (ja) * | 2005-09-06 | 2007-03-15 | Ohara Inc. | 光学ガラス |
| RU2302387C1 (ru) * | 2005-11-24 | 2007-07-10 | Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук | Глазурь |
| JP5160043B2 (ja) * | 2006-03-31 | 2013-03-13 | Hoya株式会社 | モールドプレス用ガラス素材、及びガラス光学素子の製造方法 |
| WO2012133421A1 (ja) * | 2011-03-29 | 2012-10-04 | 株式会社オハラ | 光学ガラス、プリフォーム及び光学素子 |
-
2015
- 2015-12-08 WO PCT/JP2015/084358 patent/WO2016093211A1/ja not_active Ceased
- 2015-12-08 CN CN201580067682.0A patent/CN107001122A/zh not_active Withdrawn
- 2015-12-08 EP EP15866495.3A patent/EP3231776A4/en not_active Withdrawn
- 2015-12-08 US US15/533,781 patent/US20170326266A1/en not_active Abandoned
- 2015-12-08 JP JP2016563675A patent/JPWO2016093211A1/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005501113A (ja) * | 2001-08-22 | 2005-01-13 | カール−ツァイス−スティフツング | 炎症を抑えて傷を癒す抗菌性のガラス粉末ならびにその使用方法 |
| JP2011524324A (ja) * | 2008-05-27 | 2011-09-01 | インペリアル イノベーションズ リミテッド | 低酸素誘導因子(hif)安定化ガラス |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3231776A4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017114722A (ja) * | 2015-12-24 | 2017-06-29 | 日本電気硝子株式会社 | 創傷被覆材 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20170326266A1 (en) | 2017-11-16 |
| EP3231776A1 (en) | 2017-10-18 |
| EP3231776A4 (en) | 2018-06-27 |
| CN107001122A (zh) | 2017-08-01 |
| JPWO2016093211A1 (ja) | 2017-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kargozar et al. | Can bioactive glasses be useful to accelerate the healing of epithelial tissues? | |
| Abou Neel et al. | Bioactive functional materials: a perspective on phosphate-based glasses | |
| Deliormanlı | Electrospun cerium and gallium-containing silicate based 13-93 bioactive glass fibers for biomedical applications | |
| KR20190013924A (ko) | 생체활성 보로포스페이트 유리 | |
| CN101301487A (zh) | 一种明胶/生物活性玻璃复合海绵敷料及其制备方法 | |
| TW202333642A (zh) | 具有改進的生物活性的玻璃組成物 | |
| WO2024207695A1 (zh) | 一种含硼生物活性玻璃及其制备方法与应用 | |
| Yamaguchi et al. | CaO-B2O3-SiO2 glass fibers for wound healing | |
| JP2018050648A (ja) | 創傷被覆材 | |
| WO2016093211A1 (ja) | 創傷治療用ガラス組成物、創傷被覆材及びその製造方法 | |
| WO2019148554A1 (zh) | 一种硼磷系生物活性玻璃及其制备方法 | |
| WO2015021519A1 (pt) | Composição vítrea, fibras e tecidos vítreos bioativos e artigos | |
| JP2018104222A (ja) | 創傷治療用ガラス組成物、創傷被覆材及びその製造方法 | |
| JP2019000285A (ja) | 創傷被覆材 | |
| JP2018050647A (ja) | 創傷被覆材 | |
| CN113227004A (zh) | 生物活性磷酸盐玻璃 | |
| JP2018104223A (ja) | 創傷治療用ガラス組成物、創傷被覆材及びその製造方法 | |
| CN101050062B (zh) | 磷酸钙系微晶玻璃药物缓释载体的制备方法 | |
| JP2017217178A (ja) | 創傷被覆材及びその製造方法 | |
| JP5721712B2 (ja) | 哺乳類の組織再生用の微量元素含有スキャフォールド | |
| JP2018029643A (ja) | 創傷被覆材 | |
| JP2017176645A (ja) | 創傷被覆材 | |
| Arango-Ospina et al. | Clinical Products and Further Devices of Phosphates and Borates | |
| CN101050053A (zh) | 一种骨组织工程材料的制备方法及其应用 | |
| JP2017114722A (ja) | 創傷被覆材 |
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: 15866495 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2016563675 Country of ref document: JP Kind code of ref document: A |
|
| REEP | Request for entry into the european phase |
Ref document number: 2015866495 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 15533781 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |