ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,105, issued on April 7, was assigned to IlluminOss Medical Inc. (East Providence, R.I.).

"Photodynamic articular joint implants and methods of use" was invented by Robert A. Rabiner (Barrington, R.I.), Richard Scott Rader (Wayland, Mass.) and Thomas Gausepohl (Marl, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Photodynamic devices for replacement of an articular head of a bone are provided. In an embodiment, a photodynamic device includes a photodynamic support member and an articular member attachable, either fixedly or removably, to the photodynamic support member and having a bearing surface. In an embodiment, the articular member inclu...