ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,419,691, issued on Sept. 23, was assigned to SMITH & NEPHEW INC. (Memphis, Tenn.), SMITH & NEPHEW ORTHOPAEDICS AG (Zug, Switzerland) and SMITH & NEPHEW ASIA PACIFIC PTE. Ltd. (Singapore).

"Gravitationally oriented tracking frame for steriotatic tool tracking" was invented by Benjamin McCandless (Pittsburgh).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are surgical tools including tracking assemblies and tracking assemblies that are usable in connection with surgical tools, wherein the tracking assemblies are configured to be maintained in a defined orientation despite movement by the surgical tool. A tracking assembly can include a counterba...