WO2005049213A1 - 微粒子、微粒子の製造方法、及び製造装置 - Google Patents
微粒子、微粒子の製造方法、及び製造装置 Download PDFInfo
- Publication number
- WO2005049213A1 WO2005049213A1 PCT/JP2004/017187 JP2004017187W WO2005049213A1 WO 2005049213 A1 WO2005049213 A1 WO 2005049213A1 JP 2004017187 W JP2004017187 W JP 2004017187W WO 2005049213 A1 WO2005049213 A1 WO 2005049213A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substance
- solvent
- fine particles
- laser light
- gel
- Prior art date
Links
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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
- B01J19/121—Coherent waves, e.g. laser beams
-
- 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
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00132—Controlling the temperature using electric heating or cooling elements
- B01J2219/00137—Peltier cooling 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/0871—Heating or cooling of the reactor
-
- 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
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/0873—Materials to be treated
- B01J2219/0877—Liquid
-
- 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
- B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J2219/0873—Materials to be treated
- B01J2219/0879—Solid
Definitions
- Fine particles Fine particles, method for manufacturing fine particles, and manufacturing apparatus
- the present invention relates to fine particles of a substance such as an organic compound, a method for producing fine particles, and a production apparatus.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-113159.
- a method of generating fine particles of an organic compound by irradiating a laser beam is disclosed.
- an organic compound an organic pigment or aromatic condensed polycyclic compound which has a property intermediate between inorganic and organic substances and has a strong molecular structure and a high rigidity is intended to be finely divided.
- Non-Patent Documents 13 to 13 also describe the generation of fine particles of an organic compound by laser light irradiation.
- Patent Document 1 JP 2001-113159 A
- Patent Document 1 Y. Tamaki et al., I'ailonng nanoparticies of aromatic and dye molecules by excimer laser irradiation ", Applied Surface Science Vol. 168, p.85-88 (2000)
- Non-Patent Document 2 Y. Tamaki et al., "Nanoparticle Formation of Vanadyl Phthalocyanine by Laser Ablation of Its Crystalline Powder in a Poor Solvent, J. Phys. Chem. A 2002, 106, p.2135-2139 (2002)
- Non Patent Literature 3 B ⁇ i et al., "Enhancement of organic nanoparticle preparation by laser ablation in aqueous solution using surfactants, Applied Surface Science Vol. 210, p.171-176 (2003)
- the present invention has been made to solve the above problems, and provides a method for producing fine particles, a manufacturing apparatus, and a fine particle capable of efficiently converting a substance such as an organic compound into fine particles.
- the purpose is to provide.
- a method for producing fine particles according to the present invention is a method for producing fine particles of a substance by subjecting a substance in a solvent of a liquid to be treated to light crushing. Using a treatment target containing a substance in which the solvent of the treatment liquid is in a solid state, the treatment target is irradiated with laser light of a predetermined wavelength, thereby performing a fine particle formation step of turning the substance in the solvent into fine particles. It is characterized by having.
- a predetermined treatment is performed on the liquid to be treated.
- the object to be treated containing the substance to be atomized, which is obtained in this way, is processed into particles by laser light irradiation.
- the degree of freedom of the molecular motion of the substance is sufficiently reduced, and the fine particles are formed while maintaining the dispersibility and particle size characteristics of the fine particles. Therefore, the relaxation of the photo-crushing energy due to the molecular motion is suppressed, and the quality of the fine particles is maintained, so that the substance can be efficiently finely divided.
- Organic substances are preferably used as the substance to be micronized. Alternatively, a substance other than the organic compound may be used.
- a solidified body can be used as the solid object to be processed.
- a laser light is applied to the coagulated body by using a coagulated body containing a substance obtained by cooling a liquid to be processed and coagulating a solvent. It is preferable to make the substance in the solvent into fine particles by irradiation.
- an apparatus for producing fine particles according to the present invention in the case of using a solidified body as an object to be processed is a manufacturing apparatus for producing fine particles of the substance by photo-crushing a substance in a solvent of a liquid to be processed.
- a solidified substance containing a substance to be micronized which is obtained by cooling a liquid to be processed to a predetermined temperature, is used as an object to be micronized by laser light irradiation. It is carried out.
- the degree of freedom of the molecular motion of the substance is sufficiently reduced, and the fine particles are formed while maintaining the dispersibility and the particle size characteristics of the fine particles. Therefore, the relaxation of the light crushing energy due to the molecular motion is suppressed, and it is possible to efficiently atomize the substance while maintaining the quality of the fine particles.
- the production method includes a gas discharging step of discharging dissolved gas in the solvent before solidifying the solvent.
- the manufacturing apparatus includes a gas discharging means for discharging dissolved gas in the solvent before solidifying the solvent.
- the production method preferably includes a particle dispersion step of dispersing the raw material particles of the substance in the solvent before coagulating the solvent.
- the manufacturing apparatus preferably includes a particle dispersing unit for dispersing the raw material particles of the substance in the solvent before solidifying the solvent.
- a gel body can be used as the solid object to be processed.
- the gel raw material in the method for producing microparticles according to the present invention, is dispersed in the solvent of the liquid to be processed, and the object to be processed includes a substance obtained by gelling the solvent containing the gel raw material. It is preferable to use a gel body and irradiate the gel body with laser light to make the substance in the solvent finer.
- the apparatus for producing fine particles according to the present invention in the case of using a gel body as an object to be treated is a production apparatus for producing fine particles of the substance by subjecting a substance in a solvent of a liquid to be treated to light crushing.
- a gel body containing a substance to be microparticulated which is obtained by gelling a liquid to be processed, is used as a processing target, and microparticles are formed by laser light irradiation. .
- fine particles are formed while maintaining the dispersibility and the particle size characteristics of the fine particles. Therefore, the quality of the fine particles is maintained, and the substance can be efficiently finely divided.
- the gel raw material is not particularly limited. However, in the case of releasing fine particles in the gel to the outside under specific conditions, it is preferable to use an environmentally responsive gel raw material. Examples of such gels include gels responsive to pH, light, temperature, electric field and the like.
- the micronization step it is preferable that at least one of separation, classification, and concentration of the microparticles is performed by applying an electric field to the gel body.
- manufacturing The apparatus preferably includes an electric field applying means for applying an electric field to the gel body to perform at least one of separation, classification, and concentration of fine particles.
- a second gel body containing a substance to be micronized is connected to the gel body, and the gel body is formed in the gel body. Fine particles may be moved to a second gel body by electrophoresis and stored.
- the temperature of the gel body is cooled before the micronization step.
- the manufacturing apparatus preferably includes a cooling unit that cools the temperature of the gel body, and a cooling holding unit that holds the gel body in a cooled state.
- the temperature of the gel body is preferably cooled to 0 ° C or less.
- the fine particles are formed while the degree of freedom of the molecular motion of the substance is sufficiently reduced. Therefore, the relaxation of the photo-fracturing energy due to the molecular motion is suppressed, and it is possible to efficiently atomize the substance while maintaining the quality of the fine particles.
- a laser light source that is also irradiated with a laser light source power and used for a micronization step is used. Is preferably 900 nm or more. Thereby, it is possible to suitably realize the fine particles of the substance by laser beam irradiation.
- the irradiation of the laser beam is performed while moving the irradiation position of the laser beam on the object to be processed in the micronization step.
- laser light is irradiated to each position of the object to be processed such as a solidified body or a gel body, and the substance contained at each position in the object to be processed is efficiently atomized by laser light. can do.
- the irradiation position may be moved by changing the optical path of the laser beam in the micronization step.
- the manufacturing apparatus may include an optical path changing unit that changes an irradiation position by changing an optical path of the laser light from the laser light source to the processing chamber.
- the manufacturing method in the atomization step, it is preferable to determine the irradiation condition of the laser beam to the object to be processed with reference to the monitoring result of the shock wave caused by the atomization of the substance. Good.
- the manufacturing apparatus includes shock wave monitoring means for monitoring a shock wave caused by atomization of the substance.
- the substance to be micronized may be a drug.
- photochemical reaction or the like with the drug due to laser light irradiation can be sufficiently prevented, and the fine particles can be produced without losing the medicinal properties of the drug.
- the surface area of the drug is increased, and drug fine particles having improved absorbability into a living tissue can be obtained.
- the fine particles according to the present invention are fine particles produced by the above-described method for producing fine particles. According to such fine particles, it is possible to obtain fine particles of a substance such as an organic compound in a good state, which is efficiently produced.
- a substance to be treated is solidified by using a substance containing a substance in which the solvent of the liquid to be treated is solidified, and the substance is made into fine particles efficiently by laser light irradiation. It is possible.
- FIG. 1 is a configuration diagram schematically showing an embodiment of an apparatus for producing fine particles.
- FIG. 2 is a diagram showing a configuration example of an optical path changing device used in the manufacturing apparatus shown in FIG. 1.
- FIG. 3 is a diagram showing a configuration example of an optical path changing device used in the manufacturing apparatus shown in FIG. 1.
- FIG. 4 is a diagram showing a configuration example of an optical path changing device used in the manufacturing apparatus shown in FIG. 1.
- FIG. 5 is a graph showing the particle size distribution of clobetasone butyrate.
- FIG. 6 is a configuration diagram schematically showing another embodiment of an apparatus for producing fine particles.
- FIG. 7 is a perspective view showing a processing chamber used in the manufacturing apparatus shown in FIG. 6.
- FIG. 8 is a flowchart showing an example of a method for producing fine particles.
- FIG. 9 is a diagram showing an arrangement configuration of electrodes with respect to a gel body.
- FIG. 10 is a diagram showing an arrangement configuration of a gel body.
- FIG. 11 is a graph showing a monitoring result of a shock wave caused by atomization of a substance.
- FIG. 12 is a graph showing a correlation between irradiation light intensity and maximum shock wave amplitude in VOPc.
- FIG. 13 is a view showing (a) a state of a gel body before a micronization treatment and (b) a state of a gel body after a micronization treatment.
- FIG. 14 is a diagram showing the state of a gel body (a) before electrophoresis and (b) after electrophoresis.
- FIG. 15 is a graph showing the correlation between irradiation light intensity and maximum shock wave amplitude in clobetasone butyrate.
- 1A an apparatus for producing fine particles
- 2 a liquid to be processed
- 3 a processing chamber
- 4 water and ice (solvent)
- 5 raw material particles (organic compound)
- 6 a coagulated body (object to be processed)
- 10 Laser light source, 11 ⁇ '' '' '' '' '' '' '' ' ⁇ ' ⁇ , 34 ⁇ Dry gas blowing device, 41 ⁇ Magnetic stick, 42 ⁇ Magnetic stirrer, 50 ⁇ Cooling device, 60 ⁇ Decompression device,
- 1B Fine particle production equipment
- 102 Liquid to be treated
- 103 Processing chamber
- 104 Solvent
- 105 Raw material particles (substance)
- 106 Gel body (object to be treated)
- 110 Laser light source
- 115 Control device
- 121 microphone
- 122 oscilloscope
- 131 ⁇ ⁇ ⁇ light irradiation window
- 134 ⁇ ⁇ ⁇ dry gas blowing device
- 136 ⁇ ⁇ ⁇ spacer
- 137 dry air insulation layer
- 141 ... cooling medium
- 142 ⁇ ⁇ ⁇ cooling system
- 146 XZ motorized stage, 147 ⁇ ⁇ ⁇ stage controller.
- FIG. 1 is a configuration diagram schematically showing one embodiment of an apparatus for producing fine particles according to the present invention.
- the fine particle producing apparatus 1A is an apparatus for producing fine particles by photo-crushing an organic compound in a solvent of a liquid to be treated.
- the liquid to be treated 2 is composed of liquid water 4 as a solvent and water 4 And raw material particles 5 of the organic compound to be microparticulated contained therein.
- the liquid 2 to be treated is cooled to solidify the water 4 to form a solidified body 6 containing the raw material particles 5 of the organic compound in solid-phase ice. Used as ⁇ .
- the apparatus 1 A for producing fine particles includes a processing chamber 3 for containing the liquid 2 to be processed.
- the processing chamber 3 is made of, for example, quartz.
- a cooling device 50 is installed outside the processing chamber 3.
- the cooling device 50 is a cooling means used to cool the liquid 2 to be treated in the processing chamber 3 to solidify the water 4 as a solvent to form a solidified body 6 containing the raw material particles 5.
- the cooling device 50 is schematically illustrated.
- a heat insulating layer 30 is provided in addition to the cooling device 50 described above.
- the heat insulating layer 30 is solidification holding means for holding the solidified body 6 cooled by the cooling device 50 in a cooled state, and holding the water (ice) 4 in the solidified body 6 in a solidified state.
- a material suitable for heat insulation may be used, but styrene foam is preferable as the material of the heat insulating layer 30 in terms of shape processing and heat insulating properties.
- the manufacturing apparatus 1A further includes a high-power laser light source 10 for irradiating a laser beam of a predetermined wavelength to the solidified body 6 housed in the processing chamber 3 and holding the water 4 in a solidified state.
- the laser light source 10 supplies a laser beam having a wavelength suitable for atomizing the raw material particles 5 of the organic compound in the solidified water 4.
- the laser light source 10 a fixed wavelength laser light source can be used when the wavelength to be set for the laser light is already a component.
- a tunable laser light source may be used as the laser light source 10.
- laser light having an appropriate wavelength can be appropriately set and irradiated based on the light absorption characteristics of the organic compound and the like.
- the laser light source 10 may be provided with light intensity adjusting means such as an attenuation filter or an optical attenuator.
- an opening 31 is provided in a portion of the heat insulating layer 30 surrounding the processing chamber 3 on the front side facing the laser light source 10. Including the inside of this opening 31 A region between the heat insulating layer 30 and the front surface of the processing chamber 3 is a dry air heat insulating layer 32 having the same heat insulating function as the heat insulating layer 30, and thereby the processing in the processing chamber 3 is performed. The heat insulation state for the liquid 2 or the solidified body 6 is maintained.
- a light irradiation window 33 made of a glass plate or the like that covers the opening 31 is provided on the outer surface side of the heat insulating layer 30. Also, in order to prevent the outer surface of the light irradiation window 33 from dewing on the outer surface of the light irradiation window 33 for a long period of time, it is not possible to irradiate the laser beam under favorable conditions.Dry gas (for example, nitrogen gas) is blown on the outer surface of the light irradiation window 33 A dry gas spraying device 34 is installed to prevent condensation.
- ry gas for example, nitrogen gas
- a magnet stick 41 is housed in the processing chamber 3 together with the liquid 2 to be processed. Before the water 4 of the liquid 2 to be treated is solidified by the magnet stick 41 and the magnet stirrer 42, the water 4 of the liquid 2 to be treated and the raw material particles 5 are stirred in the processing chamber 3 to form the water 4.
- a particle dispersing means for dispersing the raw material particles 5 therein is configured.
- a pressure reducing device 60 is connected to the processing chamber 3 in which the liquid 2 to be processed is stored.
- the pressure reducing device 60 functions as a gas discharging means for discharging the dissolved gas in the water 4 by reducing the pressure in the processing chamber 3 before the water 4 of the liquid to be processed 2 is solidified.
- An optical path changing device 11 is provided between the laser light source 10 and a light irradiation window 33 provided on the front side of the processing chamber 3. As shown schematically in FIG. 1, the optical path of the laser light from the laser light source 10 to the processing chamber 3 is changed by the optical path changing device 11 during the laser light irradiation.
- the laser light source 10 and the optical path changing device 11 are connected to a powerful control device 15 such as a computer.
- the control device 15 is also connected to the drying gas blowing device 34, the magnet stirrer 42, and the pressure reducing device 60.
- the control device 15 controls the production of the fine particles by controlling the operation of each part of the above-described production device 1A.
- a liquid 2 to be treated is prepared by mixing water 4 which is in a liquid phase and raw material particles 5 of an organic compound to be micronized.
- the raw material particles 5 are in the state of a dissolved substance or a non-dissolved substance. Then, it is contained in the water 4.
- the liquid 2 to be treated is introduced into the processing chamber 3, and the liquid 2 to be treated in the processing chamber 3 is cooled by the cooling device 50. Then, when the temperature of the liquid to be treated 2 becomes closer to the freezing point of the water 4, the liquid to be treated 2 is stirred by the magnet stick 41 and the magnetic stirrer 42 to disperse the raw material particles 5 in the water 4. Dispersing step). Further, before or during cooling of the liquid to be treated 2, the pressure inside the processing chamber 3 is reduced by the pressure reducing device 60 to discharge the dissolved gas in the water 4 (gas discharging step).
- the liquid to be treated 2 is rapidly cooled to a temperature slightly higher than the freezing point by the cooling device 50, and then the water 4 as a solvent is solidified at a slow cooling rate to contain the organic compound raw material particles 5.
- a highly transparent solidified body 6. At this time, if the cooling is rapidly performed, the solidified solid 6 may be cracked. Therefore, it is preferable to slowly lower the temperature to a target predetermined cooling temperature.
- the laser light source 10 is controlled by the control device 15, and a laser light having a wavelength set according to the light absorption characteristics of the organic compound constituting the raw material particles 5 is supplied from the laser light source 10 to the coagulated body 6. .
- the laser light supplied from the laser light source 10 is applied to the solidified body 6 via the optical path changing device 11, the light irradiation window 33, the dry air heat insulating layer 32, and the front surface of the processing chamber 3.
- the raw material particles 5 in the solidified water 4 are finely divided, and fine particles of the organic compound are produced (fine particle formation step).
- laser light irradiation is performed while the optical path of the laser light from the laser light source 10 to the processing chamber 3 is sequentially and continuously changed by the optical path changing device 11. Thereby, the irradiation position of the laser beam on the solidified body 6 is moved, and the raw material particles 5 in the solidified body 6 are atomized at each irradiation position.
- the method of irradiating the solidified body 6 with a laser beam aggregation of the organic compound fine particles generated by the light crushing treatment of the raw material particles 5 and dissolution / precipitation of the fine particle surface occur.
- the fine particles are stored in a state in which aggregation of the fine particles and dissolution and precipitation of the fine particle surface are prevented. It is possible to do.
- the cooling device 50 for cooling the liquid 2 to be processed into the solidified body 6 for example, an ordinary refrigerator, a Peltier element, or the like can be used. Alternatively, a cooling medium such as liquid nitrogen or dry ice may be used!
- the pressure inside the processing chamber 3 in which the liquid 2 to be treated is stored is reduced by the pressure reducing device 60 to dissolve the dissolved gas in the water 4. Is being discharged.
- a specific gas discharging method used for discharging the dissolved gas besides a method of depressurizing the inside of the processing chamber 3 by the depressurizing device 60, for example, a method of repeatedly freezing and thawing the water 4 of the liquid to be processed 2 is used. There is a method of discharging dissolved gas. When such a method is used, the decompression device 60 becomes unnecessary. In addition, there are a method using ultrasonic waves and a method of publishing a gas such as hydrogen or hydrogen having low solubility in water.
- liquid 2 to be treated is stirred by magnet stick 41 and magnet stirrer 42 to disperse raw material particles 5 in water 4. I have. Thereby, when the water 4 is coagulated, the obtained coagulated body 6 can be made into a uniform and highly transparent coagulated body, and the efficiency of fine particle formation of the organic compound by laser beam irradiation can be improved.
- the fine particles are formed by irradiating laser light while moving the irradiation position of the laser light to the solidified body 6.
- This By irradiating each position of the solidified body 6 with laser light sequentially, the organic compound at each position in the solidified body 6 can be uniformly and efficiently formed into fine particles by laser light irradiation.
- the heating may cause the raw material particles 5 to be altered by heat or to cause fusion of the fine particles. .
- by scanning with a laser beam fusion or the like of fine particles due to heating is suppressed.
- other methods such as moving the solidified body 6 may be used other than the method using the optical path changing device 11 as shown in FIG.
- the wavelength of the laser light emitted from the laser light source 10 to the solidified body 6 is preferably an infrared wavelength, and more preferably 900 nm or more.
- fine particles of the organic compound can be suitably realized by laser light irradiation.
- the laser light source 10 it is preferable to use a pulse laser light source.
- the pulse should be 1 pulse. It is preferable to use a pulse laser light source having a high repetition frequency with low irradiation energy per unit.
- the organic compound of the raw material particles 5 to be finely divided by laser light irradiation may be used as a drug (a drug-related substance).
- a drug a drug-related substance
- the photochemical reaction with the drug due to the laser beam irradiation is sufficiently prevented. Therefore, the fine particles can be produced without losing the medicinal properties of the drug.
- the generation of the photochemical reaction can be further suppressed by suitably selecting the wavelength of the laser beam applied to the coagulated body 6 (for example, selecting the wavelength of 900 nm or more). Is possible
- an organic compound used as a drug often contains a relatively weak chemical bond in the molecular structure, but when such an organic compound is irradiated with light such as ultraviolet light, the fine particles are partially removed. Although it is possible to form the organic compound in some cases, at the same time, a photochemical reaction of the organic compound may partially occur through the electronically excited state to generate impurities. In particular, in the case of drugs (pharmaceuticals) to which organic compounds are administered to the body, such impurities may cause side effects and may adversely affect the living body. Must be turned on.
- organic compound to be micronized examples include, for example, poorly soluble drugs such as clobetasone butyrate / carbamazepine, which are drugs.
- poorly soluble drugs such as clobetasone butyrate / carbamazepine
- the above-described method and apparatus for producing fine particles can be applied to drug candidate substances (natural products, compound libraries, etc.), quasi-drugs, cosmetics, and the like, in addition to the drug substances.
- substances other than organic compounds can be targeted for micronization.
- a solvent for an organic compound such as a drug a small amount of ethanol, sugar, or salt which preferably uses water as described above may be contained.
- a solvent other than water may be used.
- examples of such a solvent include ethyl alcohol as a monohydric alcohol, glycols as a dihydric alcohol (propylene glycol, polyethylene glycol, etc.), and glycerol as a trihydric alcohol.
- Vegetable oils such as soybean oil, corn oil, sesame oil and laccase oil can also be used as solvents. These solvents can be suitably used as organic solvents for non-aqueous injections when used as injections.
- the fine particle manufacturing apparatus 1A shown in FIG. Regarding the stop of laser light irradiation, it is possible to obtain the intensity and time of laser light necessary for the atomization treatment at first and control the laser light irradiation based on the processing time.
- monitoring means for monitoring the state of atomization of the raw material particles 5 in the solidified body 6 may be provided, and laser beam irradiation may be controlled according to the monitoring result.
- optical path changing device 11 for moving the irradiation position of the laser beam to the solidified body 6 various devices are specifically used as shown in Figs. be able to.
- the optical path changing device 11 shown in FIG. 2 uses an acousto-optical element, and generates ultrasonic waves in an optical medium 11a such as tellurium dioxide by a transducer lib and travels through the ultrasonic waves (in FIG. 2
- the laser light from the laser light source 10 is diffracted by the wavefront indicated by the broken line arrow) to deflect the light.
- high-speed scanning of laser light can be realized because there is no mechanically movable part.
- the optical path changing device 11 shown in Fig. 3 uses a reflection mirror.
- One end of the reflection mirror 11c is fixed to the rotation axis lid, and the other end is mechanically moved in a circular arc.
- the laser light is scanned toward the processing chamber 3 by changing the reflection direction of the laser light from zero.
- a specific driving method of the reflection mirror 11c in this case for example, there is a configuration in which the surface of the speaker and the movable end of the reflection mirror 11c are bonded, and the reflection mirror 11c is driven by vibrating the speaker.
- the optical path changing device 11 shown in FIG. 4 uses a prism.
- One of the prisms is fixed to a rotation axis l lf, and the other is mechanically moved in an arc as in FIG.
- the laser beam is scanned toward the processing chamber 3 while changing the transmission direction of the laser beam from the laser beam.
- Such a configuration is also applicable to optical components other than the prism that can transmit laser light.
- Ka ⁇ E a concentration of polysorbate 80 is a surfactant (molecular weight 1310) to 2. 52 X 10- 5 molZl (2. 1 times the critical micelle concentration), vortexed
- the liquid 2 to be treated before the light crushing was performed by stirring with the above method. Further, after performing a process of discharging dissolved gas by depressurization, the inside of the processing chamber 3 having a thickness of 2 mm is quickly filled, and the processing chamber 3 is cooled by using liquid nitrogen to cool the processing chamber 3 on the side opposite to the laser light irradiation surface. 4 was coagulated in an ice state to obtain a highly transparent coagulated body 6.
- a light irradiation window 33 capable of irradiating laser light from outside was installed while blowing dry nitrogen with the dry gas blowing device 34, and high-power laser light irradiation from the laser light source 10 was performed. Further, in the present embodiment, the position of the processing chamber 3 was made variable by the XY stage without using the optical path changing device 11 shown in FIG. 1, and uniform laser light irradiation was performed.
- the irradiation condition of the solidified body 6 with the laser light was set to a wavelength of 1064 nm, a light intensity of 1732 miZcm 2 per pulse of the pulsed laser light, a spot diameter of the laser light of ⁇ 5 mm, a repetition frequency of 10 Hz, and an irradiation time of 10 minutes.
- the photo-crushed coagulated material 6 is returned to a state in which the fine particles of the organic compound are suspended in the water 4 of the liquid phase, the effect of the photo-crushing treatment is evaluated using a particle size distribution analyzer (Shimadzu SALD7000). Investigated by.
- FIG. 5 is a graph showing the particle size distribution of clobetasone butyrate.
- the horizontal axis shows the particle size ( ⁇ m) of clobetasone butyrate
- the vertical axis shows the relative particle amount in terms of volume.
- graph A1 shows the particle size distribution in a state where clobetasone butyrate, which is a raw material particle, is suspended in water and particles are dispersed only by vortex. From this graph, it can be seen that the raw material particles have a particle size of about 2-50 / zm. Also, Rough A2 shows the particle size distribution when only cooling and solidification treatment was performed at a temperature of 195.8 ° C with liquid nitrogen. Comparing the graphs A1 and A2, in the graph A2, the particle size distribution of several tens of meters is slightly reduced, but the size and the change are not seen!
- graph A3 shows a particle size distribution in a case where a raw material particle is suspended in non-coagulated water and subjected to light crushing treatment by laser light irradiation under the above irradiation conditions.
- the particle size distribution is slightly shifted in the direction of smaller particle size as compared with the graph A1. This indicates that the laser beam irradiation under the above-mentioned irradiation conditions causes photo-crushing of the raw material particles of the organic compound.
- the graph A4 shows the particle size distribution in the case where the raw material particles are contained in the ice solidified by the method of the present invention and the light crushing treatment by laser light irradiation is performed under the above irradiation conditions. Is shown.
- the light crushing treatment by laser light irradiation can be performed in the solidified ice in the same manner as in liquid water. It can be seen that it is possible, and that the efficiency of the light crushing treatment is higher in ice (coagulated body) than in water (liquid to be treated). From the above, it was confirmed that by performing laser light irradiation on a solidified product obtained by solidifying water as a solvent, it is possible to efficiently crush the raw material particles 5 of the organic compound with light.
- a coagulated body which is a processed object including a substance obtained by cooling a liquid to be processed and coagulating a solvent is used, and the coagulated body is irradiated with a laser beam to perform a fine particle forming process. It is carried out.
- an object to be processed containing a substance in which the solvent of the liquid to be processed is solid is used, and the object to be processed is irradiated with laser light of a predetermined wavelength to perform fine particle treatment. Is possible.
- a solid object to be processed is not limited to the solidified body exemplified in the above-described embodiment.
- a gel material is dispersed in a solvent of a liquid to be processed and a solvent containing the gel material is gelled.
- a gel containing a substance to be micronized can be used.
- FIG. 6 is a configuration diagram schematically showing another embodiment of the apparatus for producing fine particles according to the present invention.
- FIG. 7 is a perspective view showing a processing chamber used in the manufacturing apparatus shown in FIG.
- the apparatus 1B for producing fine particles is an apparatus for producing fine particles by photo-crushing a substance such as an organic compound in a solvent of a liquid to be treated.
- the liquid to be treated 102 is composed of a solvent 104 in a liquid phase and raw material particles 105 of the substance to be micronized contained in the solvent 104.
- the gel raw material is dispersed in the solvent 104 of the liquid to be treated 102, and the solvent 104 containing the gel raw material is gelled, and the raw material particles 105 of the substance are contained in a dispersed and fixed state.
- a gel body 106 is used, and the gel body 106 is used as a processing object.
- the apparatus 1B for producing fine particles includes a processing chamber 103 for accommodating the liquid to be treated 102 and a gel body 106 obtained by gelling the liquid to be treated 102.
- the processing chamber 103 is made of, for example, quartz.
- a cooling medium 141 to which a cooling device 142 is connected is provided on the rear side of the processing chamber 103.
- the cooling medium 141 is a cooling means for cooling the gel body 106 to a predetermined temperature (preferably a temperature of 0 ° C. or lower) as necessary.
- a predetermined temperature preferably a temperature of 0 ° C. or lower
- the present manufacturing apparatus 1B includes a high-output laser light source 110 that irradiates the gel body 106 accommodated in the processing chamber 103 with laser light of a predetermined wavelength.
- the laser light source 110 supplies a laser beam having a suitable wavelength for atomizing the raw material particles 105 of the substance in the gelled solvent 104.
- a fixed wavelength laser light source can be used when the wavelength to be set in the laser light is already a component.
- the laser light source 110 a fixed wavelength laser light source can be used when the wavelength to be set in the laser light is already a component.
- a tunable laser light source may be used.
- a light intensity adjusting means such as an attenuation filter or an optical attenuator is provided for the laser light source 110. May be.
- a light irradiation window 131 is provided on the outer surface of the processing chamber 103 on the front side facing the laser light source 110 with respect to the laser light source 110. Behind the light irradiation window 131, there is a dry air heat insulating layer 137 formed by a spacer 136 of a heat insulating material in order to enhance heat insulation with the processing chamber 103.
- a dry gas eg, nitrogen gas
- a dry gas spraying device 134 for preventing dew condensation is installed.
- An XZ stage 146 that is an electric stage for moving the processing chamber 103, the cooling medium 141, and the like in the X direction and the Z direction (see FIG. 7) is provided on the rear side of the cooling medium 141.
- the drive of the XZ stage 146 is controlled by a stage controller 147.
- a microphone 121 is provided at a predetermined position with respect to the processing chamber 103 accommodating the gel body 106 to be processed.
- the microphone 121 is shock wave monitoring means for monitoring a shock wave generated due to the atomization of the raw material particles 105 of the substance.
- the microphone 121 is connected to an oscilloscope 122. By monitoring an output signal from the microphone 121 with the oscilloscope 122, a shock wave generated in the processing chamber 103 is monitored.
- the laser light source 110 is connected to a powerful control device 115 such as a computer.
- the control device 115 is also connected to an oscilloscope 122, a drying gas blowing device 134, a cooling device 142, and a stage controller 147.
- the control device 115 controls the production of fine particles by controlling the operation of each part of the production device 1B.
- FIG. 8 is a flowchart showing an example of the method for producing fine particles according to the present invention.
- a powdery gel raw material and raw material particles 105 of a substance to be micronized are mixed with a solvent 104 which becomes a liquid phase to prepare a liquid to be treated 102 (step S501).
- the material particles 105 are contained in the solvent 104 in a state of a dissolved substance or a non-dissolved substance.
- the solvent 104 is heated to a temperature at which the gel raw material is melted, and the raw material particles 105 are filled in the processing chamber 103 in a dispersed state, and the gel body 106 which is the processing object including the raw material particles 105 is formed. It is generated (S502).
- a drying gas spraying device 134 is applied to the light irradiation window 131 so that the optical path of the laser beam from the laser light source 110 used for the atomization treatment is not damaged by dew condensation during cooling. Is blown (S503). Further, the cooling device 142 and the cooling medium 141 cool the gel body 106 containing the raw material particles 105 to a suitable temperature at which the gel body 106 does not solidify, preferably to a temperature of 0 ° C. or lower (S504). Then, the laser light source 110 is controlled by the control device 115, and laser light having a wavelength set according to the light absorption characteristics of the material constituting the raw material particles 105 is supplied from the laser light source 110 to the gel body 106. .
- the laser light supplied from the laser light source 110 is applied to the gel body 106 through the light irradiation window 131, the dry air layer 137, and the front surface of the processing chamber 103.
- the presence or absence of the generation of a shock wave due to atomization is monitored, and the raw material particles 105 of the substance are referred to based on the monitoring result.
- the irradiation condition of the laser beam for making the particles fine is determined (S505).
- the raw material particles 105 in the gelled solvent 104 are turned into fine particles in the gel body 106 in the processing chamber 103. Fine particles of a substance such as an organic compound are produced. Further, by driving the XZ stage 146 to move the position of the gel body 106 accommodated in the processing chamber 103 in the X direction and the Z direction, the gel body 106 is irradiated with laser light within a predetermined range. As a result, the necessary atomization process is completed (S506).
- a gel body 106 containing a substance to be microparticulated which is obtained by gelling a liquid to be processed 102 composed of a solvent 104 and raw material particles 105, Fine particles are formed by laser beam irradiation.
- the fine particles are formed in a state in which aggregation of the fine particles and elution and precipitation of the fine particle surface are prevented.
- cool the gel body In this case, the atomization is performed in a state where the degree of freedom of the molecular motion of the substance is reduced.
- the relaxation of the light crushing energy due to the molecular motion is suppressed, and while maintaining the dispersibility and quality of the fine particles, the fine particles of the substance can be reduced by irradiating the gel body 106 with the laser light from the laser light source 110. It can be realized efficiently. Therefore, by using the above-described production method, it is possible to obtain fine particles of a substance in a good state, which is efficiently produced.
- the raw material particles of the substance and the generated fine particles are bound by the network structure of the gel. It is possible to leave. In addition, since the movement of the liquid phase itself is also restricted by the network of the gel, aggregation of the fine particles and elution and precipitation on the fine particle surface can be suppressed. Therefore, by using a gel body as an object to be treated for micronization, it is possible to achieve stable storage while maintaining the dispersibility and particle size of the generated microparticles over a long period of time.
- the gel powder raw material melts at 90 ° C or higher and gels at about 37-39 ° C. Therefore, when the gel body 106 is to be treated, if the raw material particles 105 of the substance to be micronized avoid high temperatures, the raw material particles 105 can be mixed and dispersed immediately before gelling. preferable.
- the low melting point type gel has a low melting point of about 65 ° C and a gelling temperature of about 30 ° C, which is close to room temperature. For this reason, the raw material particles can be dispersed and mixed in the gel while avoiding thermal deterioration.
- an external environment-responsive gel as the gel raw material.
- Such an environmentally responsive gel is effective in a case where control for releasing fine particles inside the gel to the outside is performed. That is, by using a functional gel, an operation of releasing fine particles in the gel to the outside only in a special environment becomes possible. For example, if a pH environment-responsive gel is used, it is also possible to limit the organs to which the drug is to be absorbed in the oral administration of the drug microparticles.
- a gel for example, a gel that can be disintegrated by controlling pH, light, temperature, electric field and the like has been developed.
- PolyNIPAAm poly-N-isopropylacrylamide
- DHA dehydroalanine
- a stabilizer or dispersant such as a water-soluble polymer or a surfactant.
- the temperature of the gel body is cooled to a predetermined temperature, preferably a temperature of 0 ° C or lower. It is known from Non-Patent Document 3 that the lower the temperature, the higher the efficiency of the generation of fine particles in the process of forming fine particles of a substance by laser light irradiation. In addition, since the movement of water molecules is restricted by the network structure of the gel, the liquid state can be maintained even at a low temperature of 0 ° C or lower.
- the fine particle treatment in the fine particle treatment using a gel body as the object to be processed, the fine particle treatment can be performed while cooling the raw material particles in the gel to an extremely low temperature. Therefore, it can be expected to improve the efficiency of the fine particle treatment and reduce the thermal degradation of the generated fine particles.
- a cooling means for cooling the gel body for example, it is preferable to use a Peltier element that can be cooled to around 50 ° C.
- a compressor-type cooling device using a normal refrigerant can be used.
- a dry air insulation layer 137 is provided between the front surface of the processing chamber 103 and the light irradiation window 131, and a dry gas spraying device 134 is provided for the light irradiation window 131.
- the XZ stage 146 is used to change the irradiation position of the laser light on the gel body 106, and the fine particles are formed by laser light irradiation.
- the laser light is sequentially irradiated to each position of the gel body 106, and the substance at each position in the gel body 106 can be uniformly and efficiently formed into fine particles by the laser light irradiation.
- the optical path changing device described above with reference to FIG. 1 may be used.
- the irradiation condition of the laser beam to the object to be processed is determined with reference to the monitoring result of the shock wave caused by the atomization of the substance.
- the irradiation conditions of the laser beam can be suitably set, and the efficiency of finely pulverizing the substance can be improved.
- an electric field applying means is provided for the gel body, and an electric field is applied to the gel body so that the electrophoresis is used in combination. Can be separated, classified and concentrated.
- an electric field is applied to the gel to apply Coulomb force to charged particles in the gel, and only particles having a particle size that can pass through the mesh of the gel can be moved.
- an electric field is applied to the gel body by an electric field applying means to perform at least one of separation, classification, and concentration of the fine particles.
- the generated fine particles themselves do not have a charge
- the fine particles can be charged by adding a ionic additive.
- the ionic additive adheres to the generated fine particles, electrophoresis can be favorably realized.
- the substance to be micronized is a drug or the like, it is preferable to select an additive from those permitted for the drug.
- FIG. 9 is a diagram showing an arrangement of electrodes, which are electric field applying means, for a gel body.
- the processing chamber 103 is configured as a processing chamber with electrodes to which an electrophoresis function is added.
- Configuration example (a) shows a configuration in which electrophoresis of fine particles is performed in a direction perpendicular to the laser beam irradiation axis. Electrophoresis electrodes 201 and 202 are arranged in the processing chamber 103a so as to sandwich the gel body 106a to be processed from left and right.
- the electrophoresis of the fine particles in the gel body 106a is performed by applying a DC voltage from the electrophoresis power supply 200a between the electrodes 201 and 202.
- the charged fine particles having a particle size capable of moving in the network structure of the gel body 106a move to the left when positively charged, and move to the right when negatively charged.
- Configuration example (b) shows a configuration in the case where electrophoresis of fine particles is performed in the same direction with respect to the laser beam irradiation axis. Electrophoresis electrodes 211 and 212 are arranged in the processing chamber 103b so as to sandwich the gel body 106b to be processed from front and rear. In this configuration, since the electrode itself is irradiated with laser light, it is necessary to use a transparent electrode.
- the electrophoresis of the fine particles in the gel body 106b is performed by applying a DC voltage from the power supply for electrophoresis 200b between the electrodes 211 and 212.
- the charged fine particles having a particle size that can move in the network structure of the gel body 106b move to the front side with a positive charge and move to the rear side with a negative charge.
- fine particles having a smaller particle size than the mesh size of the gel have a higher moving speed in the gel. Therefore, classification of generated fine particles by electrophoresis, that is, separation by particle size can be realized. Further, by performing the electrophoresis for a long time, a concentration operation for increasing the density of the generated fine particles near the electrophoresis electrode can be realized.
- a second gel body that does not include the substance to be microparticulated is connected to the gel body, Fine particles generated in the gel body for microparticulation treatment may be moved to a second gel body by electrophoresis and stored. If such a method is used, the raw material particles By using the second gel body that has not been used as the recovery gel body, it is possible to collect only the generated fine particles.
- FIG. 10 is a diagram showing an arrangement of a treatment gel body and a collection gel body.
- the configuration examples (a) and (b) shown in FIG. 10 are similar to the configuration examples (a) and (b) shown in FIG. 9 in that the processing chamber 103 is provided with an electrode having an electrophoresis function. It is configured as a processing chamber.
- the electrophoresis electrodes 203 and 204 are arranged so as to sandwich the gel body from the left and right in the processing chamber 103c. Further, corresponding to such an electrode configuration, a processing gel body 106c in which raw material particles of a substance to be subjected to micronization processing are dispersed and fixed is provided on the left side (on the side of the electrode 203) of the processing chamber 103c. On the right side of the processing chamber 103c (on the side of the electrode 204), a recovery gel body 107 for recovering only the generated fine particles is disposed.
- the electrophoresis electrodes 213 and 214 are arranged so as to sandwich the gel body from the front and rear in the processing chamber 103d. Further, corresponding to such an electrode configuration, a processing gel body 106d is provided on the front side (electrode 213 side) of the processing chamber 103d, and a recovery gel body is provided on the rear side (electrode 214 side) of the processing chamber 103d. Body 108 is arranged respectively
- VOPc vanadyl phthalocyanine
- Agarose gel was used as the gel, and a micronization treatment was performed in the gel.
- 1% of agarose powder as a gel raw material and 0.5% of SDS (sodium dodecyl sulfate) as an anionic surfactant were mixed with water as a solvent, and the resulting solution was mixed. Heating to 90 ° C gave a gel solution. Subsequently, in the cooling step of the gel solution, at 45 ° C, the VOPc to be micronized is mixed with the gel solution at a concentration of 0.5 mg / ml and dispersed in the solution to obtain a liquid to be treated. Gelling was performed in a cylindrical glass petri dish as a processing chamber to produce a gel body as an object to be processed.
- SDS sodium dodecyl sulfate
- FIG. 11 is a graph showing a result of monitoring a shock wave caused by the atomization of a substance in a gel body.
- the horizontal axis represents time (ms)
- the vertical axis represents the output voltage (mV) from the microphone serving as the shock wave monitoring means.
- a shock wave having a time waveform shown in FIG. 11 was observed by irradiating the gel body with a YAG pulse laser beam having a wavelength of 1064 nm.
- FIG. 12 is a graph showing the correlation between the intensity of the laser beam applied to the gel body and the maximum amplitude of the observed shock wave.
- the horizontal axis indicates the irradiation light intensity (mjZcm 2 'pulse), and the vertical axis indicates the maximum shock wave amplitude (mV). From this graph, it is understood that VOPc in the gel body becomes fine particles by irradiating the laser beam with an intensity of 180 mJ Zcm 2 'pulse or more.
- Fig. 13 is a diagram showing the state of the gel body containing VOPc before and after the micronization treatment, where state (a) is the state before the micronization treatment and state (b) is the state after the micronization treatment. Each state is shown.
- the irradiation intensity of the laser light to the gel body in the petri dish was set to 450 mjZcm 2 'pulse, and the irradiation position was fixed, and only the cylindrical petri dish was used. After rotation, VOPc in the gel was micronized in a circular area.
- Non-Patent Document 13-13 it has been known that when VOPc is finely divided to several tens to several 100 nm, the original color of the pigment can be seen even if it is insoluble. That is, in the state (b), the appearance of the laser beam irradiation region as blue indicates that the VOPc raw material particles have been turned into fine particles in this region.
- FIG. 14 is a diagram showing the state of the gel containing VOPc-producing fine particles before and after electrophoresis, where state (a) shows the state before electrophoresis and state (b) shows the state after electrophoresis. ing.
- micronization treatment using a gel body a description will be given of a second embodiment of the micronization treatment using a gel body.
- micronization of clobetasone butyrate (Clobetasone Butyrate, a synthetic topical corticosteroid for external use), which is a poorly soluble drug, was attempted as a substance to be micronized.
- the conditions for the micronization process are the same as in the first embodiment.
- FIG. 15 is a graph showing a correlation between the intensity of the laser beam applied to the gel body and the maximum amplitude of the observed shock wave.
- the horizontal axis indicates the irradiation light intensity Ci / cm 2 'pul se ), and the vertical axis indicates the maximum shock wave amplitude (mV). From this graph, it can be seen that in the present example targeting clobetasone butyrate, laser light was irradiated at an intensity of 1.7 jZcm 2 'pulse or more. This indicates that clobetasone butyrate in the gel body is finely divided.
- the method for producing fine particles, the manufacturing apparatus, and the fine particles according to the present invention can be variously modified without being limited to the above-described embodiments and examples.
- the material of the processing chamber used for the manufacturing apparatus is not limited to quartz, and various materials may be used in consideration of laser light transmission characteristics and the like.
- the heat insulating layer provided around the processing chamber may be made of a material other than styrene foam.
- various configurations other than the heat insulating layer may be used for the solidification holding means for holding the solvent in the solidified body in a solidified state or for the cooling and holding means for holding the gel body in a cooled state.
- an object to be processed which contains the raw material particles of the substance to be subjected to the micronization treatment in a dispersed and fixed state may be used.
- the present invention can be used as a method for producing fine particles, a production apparatus, and fine particles capable of efficiently forming organic compounds into fine particles.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/579,755 US7938344B2 (en) | 2003-11-20 | 2004-11-18 | Microparticles, microparticle production method, and microparticle production apparatus |
JP2005515646A JP4545690B2 (ja) | 2003-11-20 | 2004-11-18 | 微粒子の製造方法、及び製造装置 |
EP04818957A EP1685905A4 (en) | 2003-11-20 | 2004-11-18 | MICRO PARTICLES, METHOD FOR THE PRODUCTION OF MICROPARTICLES AND MANUFACTURING DEVICE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003391184 | 2003-11-20 | ||
JP2003-391184 | 2003-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005049213A1 true WO2005049213A1 (ja) | 2005-06-02 |
Family
ID=34616366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/017187 WO2005049213A1 (ja) | 2003-11-20 | 2004-11-18 | 微粒子、微粒子の製造方法、及び製造装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7938344B2 (ja) |
EP (1) | EP1685905A4 (ja) |
JP (1) | JP4545690B2 (ja) |
CN (1) | CN100423847C (ja) |
WO (1) | WO2005049213A1 (ja) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007116632A1 (ja) * | 2006-04-07 | 2007-10-18 | Hamamatsu Photonics K.K. | 微粒子、微粒子分散液、これらを製造する方法および装置 |
EP1951741A2 (en) * | 2005-10-27 | 2008-08-06 | Applera Corporation | Surface modification in a manipulation chamber |
US7597278B2 (en) | 2006-05-15 | 2009-10-06 | Osaka University | Method of producing medicinal nanoparticle suspension |
US7597277B2 (en) | 2003-12-18 | 2009-10-06 | Hamamatsu Photonics K.K. | Microparticles, microparticle production method, and microparticle production apparatus |
US7815426B2 (en) | 2006-05-15 | 2010-10-19 | Absize Inc. | Apparatus for forming ultrafine particles |
US7838843B2 (en) | 2005-03-14 | 2010-11-23 | Hamamatsu Photonics K.K. | Carbon nano tube processing method, processing apparatus, and carbon nano tube dispersion liquid, carbon nano tube powder |
US7938344B2 (en) | 2003-11-20 | 2011-05-10 | Hamamatsu Photonics K.K. | Microparticles, microparticle production method, and microparticle production apparatus |
US8399024B2 (en) | 2006-05-15 | 2013-03-19 | Ebara Corporation | Water-insoluble medicine |
JP2015063756A (ja) * | 2009-09-04 | 2015-04-09 | 独立行政法人産業技術総合研究所 | 球状ナノ粒子の製造方法及び同製造方法によって得られた球状ナノ粒子 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4293586B2 (ja) * | 2002-08-30 | 2009-07-08 | 浜松ホトニクス株式会社 | ナノ粒子の製造方法及び製造装置 |
US8445019B2 (en) * | 2007-09-26 | 2013-05-21 | Hamamatsu Photonics K.K. | Microparticle dispersion liquid manufacturing method and microparticle dispersion liquid manufacturing apparatus |
US20110033545A1 (en) * | 2009-08-06 | 2011-02-10 | Absize, Inc. | Topical pharmaceutical preparations having both a nanoparticle solution and a nanoparticle suspension and methods for the treatment of acute and chronic pain therewith |
US9168504B2 (en) * | 2010-03-11 | 2015-10-27 | Hamamatsu Photonics K.K. | Fine-particle dispersion liquid manufacturing method and fine-particle dispersion liquid manufacturing apparatus |
US9849512B2 (en) * | 2011-07-01 | 2017-12-26 | Attostat, Inc. | Method and apparatus for production of uniformly sized nanoparticles |
US20160236296A1 (en) * | 2015-02-13 | 2016-08-18 | Gold Nanotech Inc | Nanoparticle Manufacturing System |
CN108261991A (zh) * | 2016-12-30 | 2018-07-10 | 亚申科技研发中心(上海)有限公司 | 反应器 |
CN108079919B (zh) * | 2017-12-20 | 2019-11-19 | 长春微纪元科技有限公司 | 高精度全自动纳米材料合成*** |
FR3079759A1 (fr) * | 2018-04-06 | 2019-10-11 | Universite De Nantes | Dispositif de type reacteur photochimique |
CN113893937B (zh) * | 2021-09-15 | 2022-11-01 | 珠海艾博罗生物技术股份有限公司 | 基于环形齿聚焦槽的高通量非接触式超声破碎装置及方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0463135A (ja) * | 1990-06-29 | 1992-02-28 | Nkk Corp | セラミックスの液相合成法 |
JP2001113159A (ja) | 1999-10-14 | 2001-04-24 | Dainippon Ink & Chem Inc | 有機化合物の微粒子の製造方法 |
EP1541228A1 (en) | 2002-08-30 | 2005-06-15 | Hamamatsu Photonics K. K. | Process for producing nanoparticle, apparatus therefor and method of storing nanoparticle |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4482375A (en) * | 1983-12-05 | 1984-11-13 | Mcdonnell Douglas Corporation | Laser melt spin atomized metal powder and process |
JPS6283055A (ja) | 1985-10-07 | 1987-04-16 | ティーディーケイ株式会社 | 超微粉末材料の製造方法及び装置 |
US6068800A (en) * | 1995-09-07 | 2000-05-30 | The Penn State Research Foundation | Production of nano particles and tubes by laser liquid interaction |
JPH09313573A (ja) | 1996-05-28 | 1997-12-09 | Takeda Chem Ind Ltd | 付着・凝集性医薬品の粉砕法 |
JPH11188427A (ja) | 1997-10-23 | 1999-07-13 | Toyota Motor Corp | エンボス模様付き金属微細片の製造方法 |
JP2000153268A (ja) * | 1998-11-20 | 2000-06-06 | Ebara Corp | 液体処理方法及び装置 |
KR20010016692A (ko) * | 1999-08-02 | 2001-03-05 | 최만수 | 레이저 가열에 의한 입자 소결 제어를 이용한 구형의 미세입자 제조방법 |
JP2001334165A (ja) * | 2000-05-26 | 2001-12-04 | Hitachi Cable Ltd | 粉体の微粉砕方法 |
DE10160817A1 (de) | 2001-12-11 | 2003-06-26 | Degussa | Verfahren und Vorrichtung zur Erzeugung von nanoskaligen Pulvern durch Laserverdampfung |
WO2004080586A1 (ja) | 2003-03-07 | 2004-09-23 | Hamamatsu Photonics K.K. | 微粒子、その製造方法及び製造装置、並びに注射剤及びその製造方法 |
JP2005125258A (ja) | 2003-10-24 | 2005-05-19 | Hamamatsu Photonics Kk | 微粒子、微粒子の製造方法、及び製造装置 |
JP4681279B2 (ja) | 2003-11-17 | 2011-05-11 | 独立行政法人科学技術振興機構 | 細胞外物質の細胞内への導入方法 |
EP1685905A4 (en) | 2003-11-20 | 2009-09-09 | Hamamatsu Photonics Kk | MICRO PARTICLES, METHOD FOR THE PRODUCTION OF MICROPARTICLES AND MANUFACTURING DEVICE |
JP4482322B2 (ja) | 2003-12-18 | 2010-06-16 | 浜松ホトニクス株式会社 | 微粒子の製造方法、及び製造装置 |
JP4398280B2 (ja) | 2004-02-26 | 2010-01-13 | 浜松ホトニクス株式会社 | 微粒子の製造方法 |
JP4593144B2 (ja) | 2004-03-26 | 2010-12-08 | 浜松ホトニクス株式会社 | 微粒子化条件の決定方法、決定装置、及び微粒子の製造方法、製造装置 |
-
2004
- 2004-11-18 EP EP04818957A patent/EP1685905A4/en not_active Withdrawn
- 2004-11-18 CN CNB2004800343260A patent/CN100423847C/zh not_active Expired - Fee Related
- 2004-11-18 US US10/579,755 patent/US7938344B2/en not_active Expired - Fee Related
- 2004-11-18 JP JP2005515646A patent/JP4545690B2/ja not_active Expired - Fee Related
- 2004-11-18 WO PCT/JP2004/017187 patent/WO2005049213A1/ja not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0463135A (ja) * | 1990-06-29 | 1992-02-28 | Nkk Corp | セラミックスの液相合成法 |
JP2001113159A (ja) | 1999-10-14 | 2001-04-24 | Dainippon Ink & Chem Inc | 有機化合物の微粒子の製造方法 |
EP1541228A1 (en) | 2002-08-30 | 2005-06-15 | Hamamatsu Photonics K. K. | Process for producing nanoparticle, apparatus therefor and method of storing nanoparticle |
Non-Patent Citations (4)
Title |
---|
B. LI ET AL.: "Enhancement of organic nanoparticle preparation by laser ablation in aqueous solution using surfactants", APPLIED SURFACE SCIENCE, vol. 210, 2003, pages 171 - 176 |
See also references of EP1685905A4 |
Y TAMAKI ET AL.: "Tailoring nanoparticles of aromatic and dye molecules by excimer laser irradiation", APPLIED SURFACE SCIENCE, vol. 168, 2000, pages 85 - 88, XP027317352 |
Y. TAMAKI ET AL.: "Nanoparticle Formation of Vanadyl Phthalocyanine by Laser Ablation of Its Crystalline Powder in a Poor Solvent", J. PHYS. CHEM. A 2002, vol. 106, 2002, pages 2135 - 2139 |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7938344B2 (en) | 2003-11-20 | 2011-05-10 | Hamamatsu Photonics K.K. | Microparticles, microparticle production method, and microparticle production apparatus |
US7597277B2 (en) | 2003-12-18 | 2009-10-06 | Hamamatsu Photonics K.K. | Microparticles, microparticle production method, and microparticle production apparatus |
US7838843B2 (en) | 2005-03-14 | 2010-11-23 | Hamamatsu Photonics K.K. | Carbon nano tube processing method, processing apparatus, and carbon nano tube dispersion liquid, carbon nano tube powder |
EP1951741A2 (en) * | 2005-10-27 | 2008-08-06 | Applera Corporation | Surface modification in a manipulation chamber |
EP1951741A4 (en) * | 2005-10-27 | 2011-06-01 | Life Technologies Corp | SURFACE MODIFICATION IN A HANDLING ROOM |
WO2007116632A1 (ja) * | 2006-04-07 | 2007-10-18 | Hamamatsu Photonics K.K. | 微粒子、微粒子分散液、これらを製造する方法および装置 |
JP5095609B2 (ja) * | 2006-04-07 | 2012-12-12 | 浜松ホトニクス株式会社 | 微粒子分散液製造方法 |
US8663702B2 (en) | 2006-04-07 | 2014-03-04 | Hamamatsu Photonics K.K. | Microparticles, microparticle dispersion and method and apparatus for producing the same |
US7597278B2 (en) | 2006-05-15 | 2009-10-06 | Osaka University | Method of producing medicinal nanoparticle suspension |
US7815426B2 (en) | 2006-05-15 | 2010-10-19 | Absize Inc. | Apparatus for forming ultrafine particles |
US8399024B2 (en) | 2006-05-15 | 2013-03-19 | Ebara Corporation | Water-insoluble medicine |
JP2015063756A (ja) * | 2009-09-04 | 2015-04-09 | 独立行政法人産業技術総合研究所 | 球状ナノ粒子の製造方法及び同製造方法によって得られた球状ナノ粒子 |
Also Published As
Publication number | Publication date |
---|---|
CN100423847C (zh) | 2008-10-08 |
US20070152360A1 (en) | 2007-07-05 |
EP1685905A1 (en) | 2006-08-02 |
CN1882391A (zh) | 2006-12-20 |
US7938344B2 (en) | 2011-05-10 |
JPWO2005049213A1 (ja) | 2007-11-29 |
JP4545690B2 (ja) | 2010-09-15 |
EP1685905A4 (en) | 2009-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4545690B2 (ja) | 微粒子の製造方法、及び製造装置 | |
JP4482322B2 (ja) | 微粒子の製造方法、及び製造装置 | |
US7922786B2 (en) | Nanoparticle production method and production device and nanoparticle preservation method | |
JP4457439B2 (ja) | 有機化合物の微粒子の製造方法 | |
US7905434B2 (en) | Powder processing apparatus | |
WO2007018068A1 (ja) | フラーレン分散液の製造方法及びフラーレン分散液 | |
JP2013519671A (ja) | 高繰返周波数の超高速パルスレーザ溶発による、有機化合物のナノ粒子の液中生成方法 | |
JP2013519671A5 (ja) | ||
KR20140145116A (ko) | 나노입자 분산액, 나노입자 담지분말 및 그 제조방법 | |
JP2005125258A (ja) | 微粒子、微粒子の製造方法、及び製造装置 | |
Korede et al. | A review of laser-induced crystallization from solution | |
WO2005092489A1 (ja) | 微粒子化条件の決定方法、決定装置、及び微粒子の製造方法、製造装置 | |
JP4287727B2 (ja) | 微粒子の製造方法、及び製造装置 | |
Ali | Preparation of gold nanoparticles by pulsed laser ablation in NaOH solution | |
JP4543202B2 (ja) | 複数超音波照射によるリポソーム製造装置及び製造方法 | |
JP4717376B2 (ja) | 微粒子の製造方法、及び製造装置 | |
JP4408245B2 (ja) | 微粒子の製造方法、及び製造装置 | |
JP4398182B2 (ja) | 微粒子の製造方法、並びに注射剤の製造方法 | |
Shin | A Universal Delivery Platform: Near Infra-Red Activated Nanoparticles for Drug, Peptide, and Small Molecule Delivery | |
JP2005205264A (ja) | 微粒子の再分散方法、再分散装置、及び被処理液入り容器 | |
Kawasaki et al. | Irradiation Effect of Infrared Free Electron Laser on Dissociation of Keratin Aggregate | |
Zamiri et al. | Nanoparticle Production for Biomedical Applications via Laser Ablation Synthesis in Solution |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200480034326.0 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005515646 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004818957 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10579755 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2004818957 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10579755 Country of ref document: US |