Polymeric sheets
US4289125A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1979 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Jun 26, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Polymeric sheets having on one or both sides a fabric texture and, optionally, a network of elongated channels in the interior of the structural framework of the sheets. In one embodiment, the sheets comprise a plurality of interbonded continuous polymeric ribs extending in a direction parallel to the plane of the sheets. These ribs impart a fabric texture to both sides of the sheets and define between them recessed portions on each surface of the sheets. The elongated channels extend throughout the ribs. The open area between the ribs can vary from zero to 60%. In another embodiment, the sheets have an ultra-thin, pinhole-free polymeric membrane on one side and a fabric texture on the other side. The sheets are useful as burn coverings where they serve as synthetic, temporary replacements for damaged or missing skin. The sheets have physiologic properties similar to human skin, excellent drapability characteristics, recessed portions which provide a reservoir for wound debris and, in certain embodiments, a dermal surface which permits wound adherence by fibroblastic ingrowth. Sheets having a fabric texture on each surface are prepared by (1) applying a polymer to a skeleton sheet …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.