CA2533678A1 - Sustained delivery of an active agent using an implantable system - Google Patents
Sustained delivery of an active agent using an implantable system Download PDFInfo
- Publication number
- CA2533678A1 CA2533678A1 CA002533678A CA2533678A CA2533678A1 CA 2533678 A1 CA2533678 A1 CA 2533678A1 CA 002533678 A CA002533678 A CA 002533678A CA 2533678 A CA2533678 A CA 2533678A CA 2533678 A1 CA2533678 A1 CA 2533678A1
- Authority
- CA
- Canada
- Prior art keywords
- active agent
- sustained delivery
- implantable system
- chamber
- agent formulation
- 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
Links
- 239000013543 active substance Substances 0.000 title abstract 4
- 230000002459 sustained effect Effects 0.000 title 1
- 238000009472 formulation Methods 0.000 abstract 3
- 239000000203 mixture Substances 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 238000009792 diffusion process Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
Landscapes
- Medicinal Preparation (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention is directed to a device for delivering an active agent formulation for a predetermined administration period. An impermeable reservoir is divided into a water- swellable agent chamber and an active agent formulation chamber. Fluid from the environment is imbibed through a semipermeable plug into the water-swellable agent chamber and the active agent formulation is released through a back-diffusion regulating outlet. Delivery periods of up to 2 years are achieved.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59576196A | 1996-02-02 | 1996-02-02 | |
US08/595,761 | 1996-02-02 | ||
CA 2244997 CA2244997C (en) | 1996-02-02 | 1997-01-15 | Sustained delivery of an active agent using an implantable system |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2244997 Division CA2244997C (en) | 1996-02-02 | 1997-01-15 | Sustained delivery of an active agent using an implantable system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2533678A1 true CA2533678A1 (en) | 1997-08-07 |
CA2533678C CA2533678C (en) | 2009-06-16 |
Family
ID=36035942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002533678A Expired - Lifetime CA2533678C (en) | 1996-02-02 | 1997-01-15 | Sustained delivery of an active agent using an implantable system |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2533678C (en) |
-
1997
- 1997-01-15 CA CA002533678A patent/CA2533678C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2533678C (en) | 2009-06-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20170116 |