ALEXANDRIA, Va., June 12 -- United States Patent no. 12,295,620, issued on May 13, was assigned to Zimmer Biomet Spine Inc. (Westminster, Colo.).
"Bone screw threaded enlarger" was invented by Terry Ziemek (Broomfield, Colo.) and David W. Castleman (Minneapolis).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bone fastener system can comprise a fastener and a first sizing component. The fastener can comprise a shaft that provides an anchoring footprint. The first sizing component can be configured to be connected to the shaft and can include a first anchoring feature, or circumferential bone engaging feature, to increase a size of the anchoring footprint. The first anchoring feature can comprise a sleeve tha...