Polysaccharide gel composition
US5827937A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1995 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Jul 17, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2305/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a process for preparing a cross-linked biocompatible polysaccharide gel composition, which comprises: PA1 forming an aqueous solution of a water soluble, cross-linkable polysaccharide; PA1 initiating a cross-linking of said polysaccharide in the presence of a polyfunctional cross-linking agent therefor; PA1 sterically hindering the cross-linking reaction from being terminated before gelation occurs, an activated poly-saccharide being obtained; and PA1 reintroducing sterically unhindered conditions for said activated polysaccharide so as to continue the cross-linking thereof to a viscoelastic gel. The invention also provides a gel composition obtainable by such a process as well as gel compositions for different medical uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.