ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,495, issued on March 18.
"Bone grinder promoting bone osteoinductivity" was invented by Thomas L. Meredith (Brentwood, Tenn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bone grinder may have a grinding chamber, an intermediate zone, and a primary cutting element and a secondary cutting element. The intermediate zone may have a first wall and a second wall within the grinding chamber, and the intermediate zone may separate the primary cutting element from the secondary cutting element. The first wall and the second wall may slope inward such that a distance between the first wall and the second wall generally decreases from the primary cutting ...