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...http://www.google.de/patents/US5447492?utm_source=gb-gplus-sharePatent US5447492 - External fixation dressing for accommodating a retaining pin
