External fixation dressing for accommodating a retaining pin
US5447492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1993 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Dec 20, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0273
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flexible external fixation dressing product contains a clear hydrogel material in a gel-like phase. The fixation dressing product is comprised of several layers including a thin-film top layer, optional backing layer, optional support layer, hydrogel layer, and optional release liner, and is adapted for use around the retaining pins of an external fixation device. The thin-film top layer may define a center portion and a perimeter portion. The backing layer, support layer and hydrogel material are positioned in the center portion of the thin-film top layer. The porous backing layer is formed of a porous material having sufficient porosity that the backing layer can be secured to the hydrogel material without the use of an adhesive. During manufacture, the dressing product is assembled and a substantially centered opening and a slit are cut. The opening and slit extend through all layers of the dressing and may also extend through the release liner, if included. The slit extends from an outer edge of the dressing and intersects the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.