ZA853511B - Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release,their manufacture and use - Google Patents

Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release,their manufacture and use

Info

Publication number
ZA853511B
ZA853511B ZA853511A ZA853511A ZA853511B ZA 853511 B ZA853511 B ZA 853511B ZA 853511 A ZA853511 A ZA 853511A ZA 853511 A ZA853511 A ZA 853511A ZA 853511 B ZA853511 B ZA 853511B
Authority
ZA
South Africa
Prior art keywords
active agent
manufacture
constant release
profile contains
containing hydrogel
Prior art date
Application number
ZA853511A
Other languages
English (en)
Inventor
Ping 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 ZA853511B publication Critical patent/ZA853511B/xx

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)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Steroid Compounds (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Colloid Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Medicines Containing Plant Substances (AREA)
ZA853511A 1984-05-10 1985-05-09 Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release,their manufacture and use ZA853511B (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
ZA853511B true ZA853511B (en) 1985-12-24

Family

ID=24437841

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA853511A ZA853511B (en) 1984-05-10 1985-05-09 Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release,their manufacture and use

Country Status (16)

Country Link
US (1) US4624848A (pm)
EP (1) EP0164311B1 (pm)
JP (1) JPS619A (pm)
AT (1) ATE61731T1 (pm)
AU (1) AU583507B2 (pm)
CA (1) CA1246447A (pm)
DE (1) DE3582193D1 (pm)
DK (1) DK205185A (pm)
ES (1) ES542948A0 (pm)
FI (1) FI851801A7 (pm)
GR (1) GR851114B (pm)
IL (1) IL75129A (pm)
NZ (1) NZ212030A (pm)
PH (1) PH24100A (pm)
PT (1) PT80416B (pm)
ZA (1) ZA853511B (pm)

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FI851801L (fi) 1985-11-11
PT80416A (en) 1985-06-01
US4624848A (en) 1986-11-25
AU583507B2 (en) 1989-05-04
FI851801A0 (fi) 1985-05-08
EP0164311A2 (en) 1985-12-11
DK205185A (da) 1985-11-11
GR851114B (pm) 1985-11-25
DE3582193D1 (de) 1991-04-25
ES8603273A1 (es) 1986-01-01
EP0164311B1 (en) 1991-03-20
IL75129A (en) 1989-08-15
IL75129A0 (en) 1985-09-29
DK205185D0 (da) 1985-05-09
PH24100A (en) 1990-03-05
JPS619A (ja) 1986-01-06
CA1246447A (en) 1988-12-13
NZ212030A (en) 1988-01-08
AU4221685A (en) 1985-11-14
EP0164311A3 (en) 1987-06-03
ATE61731T1 (de) 1991-04-15
FI851801A7 (fi) 1985-11-11
PT80416B (en) 1987-04-16
ES542948A0 (es) 1986-01-01

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