A keratin hydrogel-filled implantable prosthetic device. One device is a breast implant for augmenting or reconstructing a human breast including an envelope containing a keratin hydrogel. Another device is an implant for the intervertebral disc space. One keratin hydrogel is formed from a solid precursor...http://www.google.de/patents/US20020029083?utm_source=gb-gplus-sharePatent US20020029083 - Implantable prosthetic or tissue expanding device
