Wound dressing with adhesive margin
US11141318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2017 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Dec 17, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/15715
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wound dressing comprising: a backing sheet; a layer of pressure-sensitive adhesive on the backing sheet; an island of absorbent material having smaller area than the backing sheet and applied onto a central region of the backing sheet so as to leave a margin of adhesive-coated backing sheet around the absorbent material, and an apertured wound facing layer applied over the absorbent material and adhered to the backing sheet around said island by said pressure-sensitive adhesive, wherein the apertured wound facing layer comprises an apertured substrate having a coating of a silicone gel on the wound facing surface thereof, the open area of the apertured wound facing layer is from about 5% to about 75%, and the apertured wound facing layer comprises apertures having an open area of from about 2 mm2 to about 100 mm2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.