A surgical tray for operations on a patient's limb or extremity generally comprises a surgical site board adapted to support a portion of the patient's body. The site board includes a plurality of apertures. A retention device or retraction device is removably securable in at least one of the apertures...http://www.google.de/patents/US20060272979?utm_source=gb-gplus-sharePatent US20060272979 - Surgical Tray
