NZ212030A - Hydrogel device for slow release of active agents - Google Patents

Hydrogel device for slow release of active agents

Info

Publication number
NZ212030A
NZ212030A NZ212030A NZ21203085A NZ212030A NZ 212030 A NZ212030 A NZ 212030A NZ 212030 A NZ212030 A NZ 212030A NZ 21203085 A NZ21203085 A NZ 21203085A NZ 212030 A NZ212030 A NZ 212030A
Authority
NZ
New Zealand
Prior art keywords
active agent
hydrogel
swollen
release
bead
Prior art date
Application number
NZ212030A
Other languages
English (en)
Inventor
P I Lee
Original Assignee
Ciba Geigy Ag
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 Ciba Geigy Ag filed Critical Ciba Geigy Ag
Publication of NZ212030A publication Critical patent/NZ212030A/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
    • A61K9/1605—Excipients; Inactive ingredients
    • A61K9/1629—Organic macromolecular compounds
    • A61K9/1635—Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates
    • 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
    • A61K9/20—Pills, tablets, discs, rods
    • A61K9/2004—Excipients; Inactive ingredients
    • A61K9/2022—Organic macromolecular compounds
    • A61K9/2027—Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Medicinal Preparation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Steroid Compounds (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Colloid Chemistry (AREA)
  • Medicines Containing Plant Substances (AREA)
NZ212030A 1984-05-10 1985-05-09 Hydrogel device for slow release of active agents NZ212030A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/608,756 US4624848A (en) 1984-05-10 1984-05-10 Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release, their manufacture and use

Publications (1)

Publication Number Publication Date
NZ212030A true NZ212030A (en) 1988-01-08

Family

ID=24437841

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ212030A NZ212030A (en) 1984-05-10 1985-05-09 Hydrogel device for slow release of active agents

Country Status (16)

Country Link
US (1) US4624848A (show.php)
EP (1) EP0164311B1 (show.php)
JP (1) JPS619A (show.php)
AT (1) ATE61731T1 (show.php)
AU (1) AU583507B2 (show.php)
CA (1) CA1246447A (show.php)
DE (1) DE3582193D1 (show.php)
DK (1) DK205185A (show.php)
ES (1) ES8603273A1 (show.php)
FI (1) FI851801A7 (show.php)
GR (1) GR851114B (show.php)
IL (1) IL75129A (show.php)
NZ (1) NZ212030A (show.php)
PH (1) PH24100A (show.php)
PT (1) PT80416B (show.php)
ZA (1) ZA853511B (show.php)

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FI851801L (fi) 1985-11-11
PT80416A (en) 1985-06-01
EP0164311A3 (en) 1987-06-03
AU583507B2 (en) 1989-05-04
EP0164311B1 (en) 1991-03-20
DK205185D0 (da) 1985-05-09
FI851801A7 (fi) 1985-11-11
ES542948A0 (es) 1986-01-01
ZA853511B (en) 1985-12-24
AU4221685A (en) 1985-11-14
US4624848A (en) 1986-11-25
JPS619A (ja) 1986-01-06
FI851801A0 (fi) 1985-05-08
GR851114B (show.php) 1985-11-25
ES8603273A1 (es) 1986-01-01
DK205185A (da) 1985-11-11
PH24100A (en) 1990-03-05
PT80416B (en) 1987-04-16
IL75129A0 (en) 1985-09-29
EP0164311A2 (en) 1985-12-11
ATE61731T1 (de) 1991-04-15
CA1246447A (en) 1988-12-13
DE3582193D1 (de) 1991-04-25
IL75129A (en) 1989-08-15

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