ALEXANDRIA, Va., March 5 -- United States Patent no. 12,239,537, issued on March 4, was assigned to SURGEBRIGHT GMBH (Lichtenberg, Austria).
"Bone transplant" was invented by Klaus Pastl (Lichtenberg, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "Bone transplant made of a cortical bone substance having a screw shank and a screw head for introducing a screwing-in torque. Both the screw shank and the screw head are provided with an external thread, in which at least the external thread of the screw shank is a multi-start thread. Due to the design, on the one hand a certain stroke can be achieved with fewer revolutions or in a shorter time, whereby the screwing-in behavior is improved and the tendon ti...