Transparent hydrogel wound dressing
US5106629A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1989 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Oct 20, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/00868
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flexible, transparent wound dressing product contains a clear hydrogel material in a gel-like phase. The wound dressing product is comprised of several layers including a wound dressing, a release layer, and a dimensionally stable backing member. The wound dressing is comprised of a thin-film transparent layer having an adhesive perimeter portion and a center portion, and a hydrogel material positioned in the center portion of the transparent layer. Since the wound dressing is transparent, a grid pattern may be printed on the thin-film transparent layer to permit measurement of a wound. During manufacture, a vacuum pressure is applied to allow temporary access to the center portion of the thin-film transparent layer, creating a cavity for insertion of the hydrogel material. The dimensionally stable backing member is then adhesively attached around the perimeter portion of the thin-film transparent layer to help the wound dressing maintain its shape. When the wound dressing product is to be applied to a wound site, the release layer is removed, preferably using an extending tab attached thereto, to expose the hydrogen material. The remaining layers of the wound dressing product ar…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.