Alginate hydrogel foam wound dressing
US4948575A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Jan 24, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dimensionally stable alginate hydrogel foam wound dressing that absorbs wound exudate without any appreciable swelling. The wound dressing is formed-in-place in the wound cavity or on the wound surface from a reactive composition that foams as it gels. The water-insoluble alginate hydrogel foam based wound dressing is made by mixing together the ingredients of a two component system; applying the resulting composite liquid mixture to a wound site; and allowing the composite mixture to react. One component contains an aqueous suspension of certain di-or trivalent metal salts and an effervescent compound. The second component contains an aqueous solution of a biocompatible, water-soluble acid. At least one compound, and preferably both, contain a water soluble alginate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.