Reinforced moisture vapor permeable, pressure-sensitive adhesive wound dressings
US4638797A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1986 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Apr 23, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/225
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
By incorporating chemical reinforcing additives into a polyurethane resin base, a unique, reinforced moisture vapor permeable membrane is achieved which comprises a substantially increased modulus of elasticity, rendering the membrane easier to handle and employ. In the preferred embodiment, the polyurethane resin base comprises a blend of polyurethane resins and the two chemical reinforcing additives comprise a non-urethane copolymer resin and silica. Furthermore, a moisture vapor permeable, pressure-sensitive adhesive is applied to one surface of the membrane, thereby attaining a wound dressing which is easy to handle and employ for various surgical procedures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.