Absorbable pharmaceutical compositions based on isomorphic copolyoxalates
US4130639A · kind A · utility
275Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1977 |
| Grant date | Dec 19, 1978 |
| Priority date | — |
| Expiry date | Sep 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/18
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Absorbable copolyoxalate polymers having isomorphic sequences are formulated with drugs and introduced into the body to provide a slow, sustained release of the drug over an extended period of time in accordance with the rate of absorption of the polymer. The copolyoxalate polymers are derived from mixtures of cyclic and linear diols, each having the same number of carbon atoms. The polymers are biodegradable in animal tissue and absorb with minimal adverse tissue reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.