CA2125904A1 - Controlled Release Formulations Coated with Aqueous Dispersions of Ethylcellulose - Google Patents

Controlled Release Formulations Coated with Aqueous Dispersions of Ethylcellulose

Info

Publication number
CA2125904A1
CA2125904A1 CA2125904A CA2125904A CA2125904A1 CA 2125904 A1 CA2125904 A1 CA 2125904A1 CA 2125904 A CA2125904 A CA 2125904A CA 2125904 A CA2125904 A CA 2125904A CA 2125904 A1 CA2125904 A1 CA 2125904A1
Authority
CA
Canada
Prior art keywords
controlled release
coated
substrate
ethylcellulose
release formulations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2125904A
Other languages
French (fr)
Other versions
CA2125904C (en
Inventor
Benjamin Oshlack
Mark Chasin
Frank Pedi Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Euro Celtique SA
Original Assignee
Benjamin Oshlack
Mark Chasin
Frank Pedi Jr.
Euroceltique S.A.
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=22165285&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2125904(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Benjamin Oshlack, Mark Chasin, Frank Pedi Jr., Euroceltique S.A. filed Critical Benjamin Oshlack
Publication of CA2125904A1 publication Critical patent/CA2125904A1/en
Application granted granted Critical
Publication of CA2125904C publication Critical patent/CA2125904C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/30Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/36Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
    • A61K47/38Cellulose; Derivatives thereof
    • 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
    • A61K9/167Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction with an outer layer or coating comprising drug; with chemically bound drugs or non-active substances on their surface
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495Heterocyclic 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
    • A61K31/505Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/519Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
    • A61K31/52Purines, e.g. adenine
    • A61K31/522Purines, e.g. adenine having oxo groups directly attached to the heterocyclic ring, e.g. hypoxanthine, guanine, acyclovir
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/28Dragees; Coated pills or tablets, e.g. with film or compression coating
    • A61K9/2806Coating materials
    • A61K9/2833Organic macromolecular compounds
    • A61K9/286Polysaccharides, e.g. gums; Cyclodextrin
    • A61K9/2866Cellulose; Cellulose derivatives, e.g. hydroxypropyl methylcellulose
    • 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
    • A61K9/5073Microcapsules 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 having two or more different coatings optionally including drug-containing subcoatings
    • A61K9/5078Microcapsules 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 having two or more different coatings optionally including drug-containing subcoatings with drug-free core
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P25/00Drugs for disorders of the nervous system
    • A61P25/04Centrally acting analgesics, e.g. opioids

Abstract

The invention concerns controlled release oxycodone dosage forms comprising a multiparticulate system substrate comprising an amount of an oxycodone salt, the substrate being coated with an aqueous dispersion of at least one hydrophobic polymer, whereby the coating provides controlled release, the substrate including an additional dose of an oxycodone salt included in either the controlled release coating or in an additional overcoating coated on the outer surface of the controlled release coating, whereby the dosage forms, comprising the cured, coated substrate, comprise an effective amount of an oxycodone salt and provide a therapeutic effect for at least 12 hours when administered to a patient.
CA002125904A 1993-06-23 1994-06-15 Controlled release formulations coated with aqueous dispersions of ethylcellulose Expired - Lifetime CA2125904C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US081,618 1993-06-23
US08/081,618 US5472712A (en) 1991-12-24 1993-06-23 Controlled-release formulations coated with aqueous dispersions of ethylcellulose

Publications (2)

Publication Number Publication Date
CA2125904A1 true CA2125904A1 (en) 1994-12-24
CA2125904C CA2125904C (en) 2000-08-08

Family

ID=22165285

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002125904A Expired - Lifetime CA2125904C (en) 1993-06-23 1994-06-15 Controlled release formulations coated with aqueous dispersions of ethylcellulose

Country Status (14)

Country Link
US (1) US5472712A (en)
EP (9) EP2018852A1 (en)
JP (3) JP4505059B2 (en)
AT (3) ATE409024T1 (en)
AU (2) AU680491B2 (en)
CA (1) CA2125904C (en)
DE (3) DE69435145D1 (en)
DK (3) DK1419766T3 (en)
ES (3) ES2180552T3 (en)
FI (1) FI121620B (en)
HK (1) HK1048432A1 (en)
NO (1) NO314566B1 (en)
PT (2) PT630646E (en)
SI (2) SI1477162T1 (en)

Families Citing this family (209)

* Cited by examiner, † Cited by third party
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