Polymeric compositions useful as controlled release implants
US5702716A · kind A · utility
320Cited by
31References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1993 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Jun 2, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2300/602
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention is directed to an improved system for controlled release of biologically active materials and to a liquid composition for its formation. The liquid composition is composed of a thermoplastic polymer, rate modifying agent, bioactive material and organic solvent. The liquid composition is capable of forming a biodegradable and/or bioerodible microporous, solid polymer matrix. The matrix is useful as an implant in patients (humans and animals) for delivery of biologically active substances to tissues or organs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.