Wound dressing with hydrophilic absorbent layer
US4977892A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Oct 3, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/51066
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Provided is a wound dressing able to absorb significant quantities of wound exudate emitted from an open wound. In one construction, it has the capability of allowing moisture contained in the exudate to be transpired out of the dressing, thereby lengthening the useful life of the dressing and minimizing macerations. Also provided is a hydrophilic absorbent polymeric layer adhered directly to the wound area of a patient, providing a wound dressing to manage wound fluids, thereby minimizing skin maceration by rapidly absorbing wound exudate and permitting the transpiration of water vapor from the liquid thus-absorbed into the atmosphere, which comprises a laminate having a hydrophilic absorbent polymeric layer attached to said fabric layer, said hydrophilic absorbent polymeric layer having been applied by pouring a monomer solution onto said fabric layer and thereafter curing to yield the polymeric layer, said hydrophilic absorbent polymeric layer upon exposure to wound exudate being self-adherent to the wound area; a fabric layer is adjacent thereto; a pressure-sensitive adhesive to maintain contact between said highly skin conformable elastomeric film and the facing fabric layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.