Wound dressing
US4664662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Jul 31, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/53782
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An absorbent, non-adherent wound dressing suitable for use in deep and cavernous wounds is described. The dressing comprises an absorbent material in the form of individual pieces of a conformable, resilient, absorbent hydrophilic foam retained within a porous bag formed from a perforated polymeric film. In a preferred form the foam is a hydrophilic polyurethane foam and the perforated polymeric film is a contoured net of a thermoplastic elastomeric polymer. A non-woven fabric may be additionally present between the perforated polymeric film and the pieces of foam. The dressings can absorb large volumes of wound exudate without adhering to the wound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.