WO1997041837A3 - Microparticles - Google Patents

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Publication number
WO1997041837A3
WO1997041837A3 PCT/EP1997/002431 EP9702431W WO9741837A3 WO 1997041837 A3 WO1997041837 A3 WO 1997041837A3 EP 9702431 W EP9702431 W EP 9702431W WO 9741837 A3 WO9741837 A3 WO 9741837A3
Authority
WO
WIPO (PCT)
Prior art keywords
particles
microparticles
organic solvent
solvent system
solvent
Prior art date
Application number
PCT/EP1997/002431
Other languages
French (fr)
Other versions
WO1997041837A2 (en
Inventor
Michael E Rickey
J Michael Ramstack
Danny H Lewis
Jean Louis Mesens
Original Assignee
Alkermes Inc
Janssen Pharmaceutica Nv
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=21917114&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1997041837(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to DE69715191T priority Critical patent/DE69715191T2/en
Priority to CA002251987A priority patent/CA2251987C/en
Priority to EP97923063A priority patent/EP0904063B1/en
Priority to SI9730417T priority patent/SI0904063T1/en
Priority to HU9902797A priority patent/HU223532B1/en
Priority to AU28972/97A priority patent/AU733199B2/en
Priority to NZ333196A priority patent/NZ333196A/en
Priority to PL97329720A priority patent/PL188550B1/en
Priority to IL12650997A priority patent/IL126509A/en
Priority to JP52963197A priority patent/JP3822909B2/en
Priority to BR9709217A priority patent/BR9709217A/en
Application filed by Alkermes Inc, Janssen Pharmaceutica Nv filed Critical Alkermes Inc
Priority to DK02075905T priority patent/DK1210942T3/en
Priority to DK97923063T priority patent/DK0904063T3/en
Priority to AT97923063T priority patent/ATE223206T1/en
Priority to EE9800383A priority patent/EE04540B1/en
Priority to SK1541-98A priority patent/SK283852B6/en
Priority to SI9730762T priority patent/SI1210942T1/en
Priority to UA98115888A priority patent/UA59361C2/en
Publication of WO1997041837A2 publication Critical patent/WO1997041837A2/en
Publication of WO1997041837A3 publication Critical patent/WO1997041837A3/en
Priority to BG102854A priority patent/BG64036B1/en
Priority to NO19984808A priority patent/NO323591B1/en
Priority to HK99101960A priority patent/HK1016884A1/en
Priority to NO20065995A priority patent/NO20065995L/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
    • B01J13/02—Making microcapsules or microballoons
    • B01J13/04—Making microcapsules or microballoons by physical processes, e.g. drying, spraying
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/519—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1605—Excipients; Inactive ingredients
    • A61K9/1629—Organic macromolecular compounds
    • A61K9/1641—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poloxamers
    • A61K9/1647—Polyesters, e.g. poly(lactide-co-glycolide)
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1682—Processes
    • A61K9/1694—Processes resulting in granules or microspheres of the matrix type containing more than 5% of excipient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50—Microcapsules 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
    • A61K9/5089—Processes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00—Drugs for disorders of the nervous system
    • A61P25/24—Antidepressants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2984—Microcapsule with fluid core [includes liposome]
    • Y10T428/2985—Solid-walled microcapsule from synthetic polymer

Abstract

The invention provides a process for the preparation of biodegradable biocompatible microparticles, said process comprising: contacting microparticles comprising a biodegradable biocompatible polymer matrix containing an active (e.g. pharmaceutical or diagnostic) agent and an organic solvent with an aqueous solvent system whereby the content of said organic solvent in said particles is reduced to 2 % or less of the weight of said particles, said solvent system being such as to satisfy at least one of the conditions (a) that it is at an elevated temperature (e.g. from 25 to 40 °C) during at least part of the time that it is in contact with said particles, and (b) that it comprises water and water-miscible solvent for said organic solvent; and recovering said particles from said aqueous solvent system.
PCT/EP1997/002431 1996-05-07 1997-05-06 Microparticles WO1997041837A2 (en)

Priority Applications (22)

Application Number Priority Date Filing Date Title
SI9730762T SI1210942T1 (en) 1996-05-07 1997-05-06 Microparticles
DK97923063T DK0904063T3 (en) 1996-05-07 1997-05-06 Process for the preparation of microparticles
DK02075905T DK1210942T3 (en) 1996-05-07 1997-05-06 Microparticles
SI9730417T SI0904063T1 (en) 1996-05-07 1997-05-06 Process for the preparation of microparticles
CA002251987A CA2251987C (en) 1996-05-07 1997-05-06 Microparticles
AU28972/97A AU733199B2 (en) 1996-05-07 1997-05-06 Microparticles
NZ333196A NZ333196A (en) 1996-05-07 1997-05-06 Process for preparing microparticles from risperidone and a solvent and use
AT97923063T ATE223206T1 (en) 1996-05-07 1997-05-06 METHOD FOR PRODUCING MICROPARTICLES
IL12650997A IL126509A (en) 1996-05-07 1997-05-06 Preparation of microparticles, compositions comprising them and uses thereof
JP52963197A JP3822909B2 (en) 1996-05-07 1997-05-06 Process for making biodegradable biocompatible particulates
BR9709217A BR9709217A (en) 1996-05-07 1997-05-06 Preparation of biodegradable biocompatible microparticles with extended shelf life containing a biologically active agent
DE69715191T DE69715191T2 (en) 1996-05-07 1997-05-06 Process for the production of microparticles
EP97923063A EP0904063B1 (en) 1996-05-07 1997-05-06 Process for the preparation of microparticles
HU9902797A HU223532B1 (en) 1996-05-07 1997-05-06 Microparticles
PL97329720A PL188550B1 (en) 1996-05-07 1997-05-06 Microparticles
EE9800383A EE04540B1 (en) 1996-05-07 1997-05-06 Method for the preparation of biologically compatible biodegradable microparticles and the use of microparticles
SK1541-98A SK283852B6 (en) 1996-05-07 1997-05-06 Process for the preparation of biodegradable biocompatible microparticles
UA98115888A UA59361C2 (en) 1996-05-07 1997-06-05 Process for preparation of biodegradable biocompatible microparticles, material contacting microparticles and pharmaceutical composition
BG102854A BG64036B1 (en) 1996-05-07 1998-10-15 Method for the preparation of microparticles
NO19984808A NO323591B1 (en) 1996-05-07 1998-10-15 Process for the preparation and use of microparticles
HK99101960A HK1016884A1 (en) 1996-05-07 1999-04-30 Process for the preparation of microparticles
NO20065995A NO20065995L (en) 1996-05-07 2006-12-22 Microparticles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4155196P 1996-05-07 1996-05-07
US60/041,551 1996-05-07

Publications (2)

Publication Number Publication Date
WO1997041837A2 WO1997041837A2 (en) 1997-11-13
WO1997041837A3 true WO1997041837A3 (en) 1998-02-26

Family

ID=21917114

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/002431 WO1997041837A2 (en) 1996-05-07 1997-05-06 Microparticles

Country Status (23)

Country Link
US (9) US5792477A (en)
EP (1) EP0904063B1 (en)
JP (2) JP3822909B2 (en)
KR (1) KR100432677B1 (en)
CN (1) CN1224380C (en)
AR (2) AR012820A1 (en)
AU (1) AU733199B2 (en)
BG (1) BG64036B1 (en)
BR (1) BR9709217A (en)
CA (1) CA2251987C (en)
CZ (1) CZ293578B6 (en)
EE (1) EE04540B1 (en)
HU (1) HU223532B1 (en)
ID (1) ID17505A (en)
IL (1) IL126509A (en)
NO (2) NO323591B1 (en)
NZ (1) NZ333196A (en)
PL (1) PL188550B1 (en)
RU (1) RU2201214C2 (en)
SK (1) SK283852B6 (en)
UA (1) UA59361C2 (en)
WO (1) WO1997041837A2 (en)
ZA (1) ZA973891B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8877252B2 (en) 2004-04-15 2014-11-04 Alkermes Pharma Ireland Limited Polymer-based sustained release device
US9393192B2 (en) 2002-07-29 2016-07-19 Alza Corporation Methods and dosage forms for controlled delivery of paliperidone and risperidone

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* Cited by examiner, † Cited by third party
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