PT80416B - Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release - Google Patents

Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release

Info

Publication number
PT80416B
PT80416B PT80416A PT8041685A PT80416B PT 80416 B PT80416 B PT 80416B PT 80416 A PT80416 A PT 80416A PT 8041685 A PT8041685 A PT 8041685A PT 80416 B PT80416 B PT 80416B
Authority
PT
Portugal
Prior art keywords
active agent
constant release
profile contains
gradient
containing hydrogel
Prior art date
Application number
PT80416A
Other languages
English (en)
Portuguese (pt)
Other versions
PT80416A (en
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 PT80416A publication Critical patent/PT80416A/pt
Publication of PT80416B publication Critical patent/PT80416B/pt

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)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (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)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Steroid Compounds (AREA)
  • Colloid Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Medicines Containing Plant Substances (AREA)
PT80416A 1984-05-10 1985-05-08 Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release PT80416B (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 (2)

Publication Number Publication Date
PT80416A PT80416A (en) 1985-06-01
PT80416B true PT80416B (en) 1987-04-16

Family

ID=24437841

Family Applications (1)

Application Number Title Priority Date Filing Date
PT80416A PT80416B (en) 1984-05-10 1985-05-08 Active agent containing hydrogel devices wherein the active agent concentration profile contains a sigmoidal concentration gradient for improved constant release

Country Status (16)

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

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ES8603273A1 (es) 1986-01-01
JPS619A (ja) 1986-01-06
NZ212030A (en) 1988-01-08
FI851801A0 (fi) 1985-05-08
FI851801L (fi) 1985-11-11
IL75129A0 (en) 1985-09-29
DK205185D0 (da) 1985-05-09
FI851801A7 (fi) 1985-11-11
PH24100A (en) 1990-03-05
AU583507B2 (en) 1989-05-04
EP0164311B1 (en) 1991-03-20
AU4221685A (en) 1985-11-14
IL75129A (en) 1989-08-15
EP0164311A2 (en) 1985-12-11
PT80416A (en) 1985-06-01
CA1246447A (en) 1988-12-13
ES542948A0 (es) 1986-01-01
US4624848A (en) 1986-11-25
EP0164311A3 (en) 1987-06-03
ATE61731T1 (de) 1991-04-15
GR851114B (forum.php) 1985-11-25
DK205185A (da) 1985-11-11
ZA853511B (en) 1985-12-24
DE3582193D1 (de) 1991-04-25

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