FI107993B - Framställning av mikropartiklar - Google Patents

Framställning av mikropartiklar Download PDF

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Publication number
FI107993B
FI107993B FI940456A FI940456A FI107993B FI 107993 B FI107993 B FI 107993B FI 940456 A FI940456 A FI 940456A FI 940456 A FI940456 A FI 940456A FI 107993 B FI107993 B FI 107993B
Authority
FI
Finland
Prior art keywords
microcapsules
peg
starch
microspheres
oil
Prior art date
Application number
FI940456A
Other languages
English (en)
Finnish (fi)
Other versions
FI940456A0 (sv
FI940456A (sv
Inventor
Lisbeth Illum
Olufunmiloyo Lilly Johnson
Original Assignee
West Pharm Serv Drug Res Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by West Pharm Serv Drug Res Ltd filed Critical West Pharm Serv Drug Res Ltd
Publication of FI940456A0 publication Critical patent/FI940456A0/sv
Publication of FI940456A publication Critical patent/FI940456A/sv
Application granted granted Critical
Publication of FI107993B publication Critical patent/FI107993B/sv

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y15/00Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/14Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1682Processes
    • A61K9/1694Processes resulting in granules or microspheres of the matrix type containing more than 5% of excipient
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00Preparations for testing in vivo
    • A61K49/22Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations
    • A61K49/222Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations characterised by a special physical form, e.g. emulsions, liposomes
    • A61K49/223Microbubbles, hollow microspheres, free gas bubbles, gas microspheres
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00Preparations for testing in vivo
    • A61K49/22Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations
    • A61K49/222Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations characterised by a special physical form, e.g. emulsions, liposomes
    • A61K49/225Microparticles, microcapsules
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/48Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5005Wall or coating material
    • A61K9/5021Organic macromolecular compounds
    • A61K9/5036Polysaccharides, e.g. gums, alginate; Cyclodextrin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/48Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5005Wall or coating material
    • A61K9/5021Organic macromolecular compounds
    • A61K9/5052Proteins, e.g. albumin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/48Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/5089Processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02Making microcapsules or microballoons
    • B01J13/06Making microcapsules or microballoons by phase separation
    • B01J13/12Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution
    • B01J13/125Making microcapsules or microballoons by phase separation removing solvent from the wall-forming material solution by evaporation of the solvent

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Physics & Mathematics (AREA)
  • Nanotechnology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Organic Chemistry (AREA)
  • Acoustics & Sound (AREA)
  • Dispersion Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Molecular Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Preparation (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Claims (13)

1. Förfarande för framställning av fasta mikrosfärer eller gasfyllda mikrokapslar, kännetecknat av att man bil-5 dar utgängsmikrokapslar innehällande en flytande kärna och avlägsnar ätminstone nägot av nämnda vätska för bildande av antingen fasta mikrosfärer eller gasfyllda mikrokapslar, förutsatt att det för de gasfyllda mikrokapslarna använda väggbildande materialet är antingen (a) ett vattenlösligt 10 stärkelsederivat som icke är amfifiliskt material eller hydroxietylcellulosa, eller (b) ett vattenlösligt PEG-modi-fierat material för vilket ätminstone ett av följande kri-terier gäller: (i) det är icke ett amfifiliskt material och/eller (ii) det omfattar konjugater av PEG-stärkelse,
15 PEG-stärkelsederivat eller PEG-albumin; och förutsatt att det väggbildande materialet i varje fall är kapabelt att bli vattenolösligt da mikrosiärerna eller mikrokapslarna bildats. 20
2. Förfarande enligt patentkrav 1, kännetecknat av att mikrokapselväggarna vid bildande av de fasta mikrosfärerna bildas av ett vattenlösligt stärkelsederivat eller ett PEG-modifierat material och görs därefter vattenolösliga. UM j<;' ; 25
3. Förfarande enligt patentkrav 1 eller 2, kännetecknat ·;· av att stärkelsederivatet är amylodextrin. • · · · • · · • · • · • •I
4. Förfarande enligt nägot av patentkraven 1-3, känne- • « · · tecknat av att det PEG-modifierade materialet är ett konju- 30 gat av PEG-albumin eller ett PEG-stärkelse eller ett PEG- . stärkelsederivat.
• « • · · • · ·;·’ 5. Förfarande enligt nägot av de föregäende patentkraven, ··· kännetecknat av att kärnan är en i vatten oblandbar olja. 35 • I
6. Förfarande enligt patentkrav 5, kännetecknat av att ·;· ; oljan är relativt flyktig och avlägsnas frän de oljefyllda '· '· kapslarna genom indunstning. 107993
7. FÖrfarande enligt nägot av de föregäende patentkraven, kännetecknat av att man bildar utgängsmikrokapslarna me-delst ett dubbelemulsionsförfarande. 5
8. FÖrfarande enligt nägot av de föregäende patentkraven, kännetecknat av att man ytterligare separerar de fasta mik-rosfärerna eller gasfyllda mikrokapslarna frän nägot fly-tande medium och frystorkar de fasta mikrosfärerna eller mikrokapslarna. 10
9. Fasta mikrosfärer, kännetecknade av att de kan erhäl-las med ett förfarande enligt nägot av patentkraven 1-8 väri det väggbildande materialet gjorts olösligt genom dena-turering, kelatering eller ympning. 15
10. Gasfyllda mikrokapslar, kännetecknade av att de kan erhällas med ett förfarande enligt nägot av patentkraven 1- 8.
11. Fasta mikrosfärer enligt patentkrav 9 för användning i frisättningssystem.
12. Gasfyllda mikrokapslar enligt patentkrav 10 för an-vändning i diagnostiska procedurer. ..1·1
13. Användning av gasfyllda mikrokapslar enligt patentkrav : 2J 10 vid framställning av en komposition för användning i ett ··· förfarande där man bildar en diagnostisk bild. • · · · • « · • · · • · · • » • « · • · * * « 4 · · 4 · • · 2 • « · • · • · ·
FI940456A 1991-08-01 1994-01-31 Framställning av mikropartiklar FI107993B (sv)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB919116610A GB9116610D0 (en) 1991-08-01 1991-08-01 Preparation of microparticles
GB9116610 1991-08-01
PCT/GB1992/001421 WO1993002712A1 (en) 1991-08-01 1992-08-03 Preparation of microparticles
GB9201421 1992-08-03

Publications (3)

Publication Number Publication Date
FI940456A0 FI940456A0 (sv) 1994-01-31
FI940456A FI940456A (sv) 1994-01-31
FI107993B true FI107993B (sv) 2001-11-15

Family

ID=10699347

Family Applications (1)

Application Number Title Priority Date Filing Date
FI940456A FI107993B (sv) 1991-08-01 1994-01-31 Framställning av mikropartiklar

Country Status (14)

Country Link
US (1) US5648095A (sv)
EP (1) EP0596984B1 (sv)
JP (1) JP3604381B2 (sv)
AT (1) ATE186221T1 (sv)
AU (1) AU665206B2 (sv)
CA (1) CA2113901C (sv)
DE (1) DE69230254T2 (sv)
DK (1) DK0596984T3 (sv)
ES (1) ES2140415T3 (sv)
FI (1) FI107993B (sv)
GB (2) GB9116610D0 (sv)
GR (1) GR3032234T3 (sv)
NO (1) NO308448B1 (sv)
WO (1) WO1993002712A1 (sv)

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GB9116610D0 (en) 1991-09-18
FI940456A0 (sv) 1994-01-31
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ATE186221T1 (de) 1999-11-15
JPH06511423A (ja) 1994-12-22
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US5648095A (en) 1997-07-15
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CA2113901A1 (en) 1993-02-18
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